1 /*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "ci/ciReplay.hpp"
28 #include "classfile/altHashing.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "interpreter/linkResolver.hpp"
35 #include "utilities/macros.hpp"
36 #if INCLUDE_ALL_GCS
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #endif // INCLUDE_ALL_GCS
39 #include "memory/allocation.hpp"
40 #include "memory/allocation.inline.hpp"
41 #include "memory/gcLocker.inline.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/universe.inline.hpp"
44 #include "oops/instanceKlass.hpp"
45 #include "oops/instanceOop.hpp"
46 #include "oops/markOop.hpp"
47 #include "oops/method.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/objArrayOop.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "oops/symbol.hpp"
52 #include "oops/typeArrayKlass.hpp"
53 #include "oops/typeArrayOop.hpp"
54 #include "prims/jni.h"
55 #include "prims/jniCheck.hpp"
56 #include "prims/jniExport.hpp"
57 #include "prims/jniFastGetField.hpp"
58 #include "prims/jvm.h"
59 #include "prims/jvm_misc.hpp"
60 #include "prims/jvmtiExport.hpp"
61 #include "prims/jvmtiThreadState.hpp"
62 #include "runtime/compilationPolicy.hpp"
63 #include "runtime/fieldDescriptor.hpp"
64 #include "runtime/fprofiler.hpp"
65 #include "runtime/handles.inline.hpp"
66 #include "runtime/interfaceSupport.hpp"
67 #include "runtime/java.hpp"
68 #include "runtime/javaCalls.hpp"
69 #include "runtime/jfieldIDWorkaround.hpp"
70 #include "runtime/reflection.hpp"
71 #include "runtime/sharedRuntime.hpp"
72 #include "runtime/signature.hpp"
73 #include "runtime/thread.inline.hpp"
74 #include "runtime/vm_operations.hpp"
75 #include "services/runtimeService.hpp"
76 #include "trace/tracing.hpp"
77 #include "utilities/defaultStream.hpp"
78 #include "utilities/dtrace.hpp"
79 #include "utilities/events.hpp"
80 #include "utilities/histogram.hpp"
81 #ifdef TARGET_OS_FAMILY_linux
82 # include "os_linux.inline.hpp"
83 #endif
84 #ifdef TARGET_OS_FAMILY_solaris
85 # include "os_solaris.inline.hpp"
86 #endif
87 #ifdef TARGET_OS_FAMILY_windows
88 # include "os_windows.inline.hpp"
89 #endif
90 #ifdef TARGET_OS_FAMILY_bsd
91 # include "os_bsd.inline.hpp"
92 #endif
93
94 static jint CurrentVersion = JNI_VERSION_1_8;
95
96
97 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
98 // '-return' probe regardless of the return path is taken out of the function.
99 // Methods that have multiple return paths use this to avoid having to
100 // instrument each return path. Methods that use CHECK or THROW must use this
101 // since those macros can cause an immedate uninstrumented return.
102 //
103 // In order to get the return value, a reference to the variable containing
104 // the return value must be passed to the contructor of the object, and
105 // the return value must be set before return (since the mark object has
106 // a reference to it).
107 //
108 // Example:
109 // DT_RETURN_MARK_DECL(SomeFunc, int);
110 // JNI_ENTRY(int, SomeFunc, ...)
111 // int return_value = 0;
112 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
113 // foo(CHECK_0)
114 // return_value = 5;
115 // return return_value;
116 // JNI_END
117 #ifndef USDT2
118 #define DT_RETURN_MARK_DECL(name, type) \
119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
120 DTRACE_ONLY( \
121 class DTraceReturnProbeMark_##name { \
122 public: \
123 const type& _ret_ref; \
124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
125 ~DTraceReturnProbeMark_##name() { \
126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
127 } \
128 } \
129 )
130 // Void functions are simpler since there's no return value
131 #define DT_VOID_RETURN_MARK_DECL(name) \
132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
133 DTRACE_ONLY( \
134 class DTraceReturnProbeMark_##name { \
135 public: \
136 ~DTraceReturnProbeMark_##name() { \
137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
138 } \
139 } \
140 )
141
142 #else /* USDT2 */
143
144 #define DT_RETURN_MARK_DECL(name, type, probe) \
145 DTRACE_ONLY( \
146 class DTraceReturnProbeMark_##name { \
147 public: \
148 const type& _ret_ref; \
149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
150 ~DTraceReturnProbeMark_##name() { \
151 probe; \
152 } \
153 } \
154 )
155 // Void functions are simpler since there's no return value
156 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
157 DTRACE_ONLY( \
158 class DTraceReturnProbeMark_##name { \
159 public: \
160 ~DTraceReturnProbeMark_##name() { \
161 probe; \
162 } \
163 } \
164 )
165 #endif /* USDT2 */
166
167 // Place these macros in the function to mark the return. Non-void
168 // functions need the type and address of the return value.
169 #define DT_RETURN_MARK(name, type, ref) \
170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
171 #define DT_VOID_RETURN_MARK(name) \
172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
173
174
175 // Use these to select distinct code for floating-point vs. non-floating point
176 // situations. Used from within common macros where we need slightly
177 // different behavior for Float/Double
178 #define FP_SELECT_Boolean(intcode, fpcode) intcode
179 #define FP_SELECT_Byte(intcode, fpcode) intcode
180 #define FP_SELECT_Char(intcode, fpcode) intcode
181 #define FP_SELECT_Short(intcode, fpcode) intcode
182 #define FP_SELECT_Object(intcode, fpcode) intcode
183 #define FP_SELECT_Int(intcode, fpcode) intcode
184 #define FP_SELECT_Long(intcode, fpcode) intcode
185 #define FP_SELECT_Float(intcode, fpcode) fpcode
186 #define FP_SELECT_Double(intcode, fpcode) fpcode
187 #define FP_SELECT(TypeName, intcode, fpcode) \
188 FP_SELECT_##TypeName(intcode, fpcode)
189
190 #define COMMA ,
191
192 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
193 // (dtrace doesn't do FP yet)
194 #ifndef USDT2
195 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
196 FP_SELECT(TypeName, \
197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
198 #else /* USDT2 */
199 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
200 FP_SELECT(TypeName, \
201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
202 #endif /* USDT2 */
203 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
204 FP_SELECT(TypeName, \
205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
206
207
208 // out-of-line helpers for class jfieldIDWorkaround:
209
210 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
212 uintptr_t as_uint = (uintptr_t) id;
213 intptr_t offset = raw_instance_offset(id);
214 if (is_checked_jfieldID(id)) {
215 if (!klass_hash_ok(k, id)) {
216 return false;
217 }
218 }
219 return InstanceKlass::cast(k)->contains_field_offset(offset);
220 } else {
221 JNIid* result = (JNIid*) id;
222 #ifdef ASSERT
223 return result != NULL && result->is_static_field_id();
224 #else
225 return result != NULL;
226 #endif
227 }
228 }
229
230
231 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
232 if (offset <= small_offset_mask) {
233 Klass* field_klass = k;
234 Klass* super_klass = field_klass->super();
235 // With compressed oops the most super class with nonstatic fields would
236 // be the owner of fields embedded in the header.
237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
239 field_klass = super_klass; // super contains the field also
240 super_klass = field_klass->super();
241 }
242 debug_only(No_Safepoint_Verifier nosafepoint;)
243 uintptr_t klass_hash = field_klass->identity_hash();
244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
245 } else {
246 #if 0
247 #ifndef PRODUCT
248 {
249 ResourceMark rm;
250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
251 }
252 #endif
253 #endif
254 return 0;
255 }
256 }
257
258 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
259 uintptr_t as_uint = (uintptr_t) id;
260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
261 do {
262 debug_only(No_Safepoint_Verifier nosafepoint;)
263 // Could use a non-blocking query for identity_hash here...
264 if ((k->identity_hash() & klass_mask) == klass_hash)
265 return true;
266 k = k->super();
267 } while (k != NULL);
268 return false;
269 }
270
271 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
273 uintptr_t as_uint = (uintptr_t) id;
274 intptr_t offset = raw_instance_offset(id);
275 if (VerifyJNIFields) {
276 if (is_checked_jfieldID(id)) {
277 guarantee(klass_hash_ok(k, id),
278 "Bug in native code: jfieldID class must match object");
279 } else {
280 #if 0
281 #ifndef PRODUCT
282 if (Verbose) {
283 ResourceMark rm;
284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
285 }
286 #endif
287 #endif
288 }
289 }
290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
291 "Bug in native code: jfieldID offset must address interior of object");
292 }
293
294 // Pick a reasonable higher bound for local capacity requested
295 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
296 // high because a test (or very unusual application) may try to allocate
297 // that many handles and run out of swap space. An implementation is
298 // permitted to allocate more handles than the ensured capacity, so this
299 // value is set high enough to prevent compatibility problems.
300 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
301
302
303 // Wrapper to trace JNI functions
304
305 #ifdef ASSERT
306 Histogram* JNIHistogram;
307 static volatile jint JNIHistogram_lock = 0;
308
309 class JNITraceWrapper : public StackObj {
310 public:
311 JNITraceWrapper(const char* format, ...) {
312 if (TraceJNICalls) {
313 va_list ap;
314 va_start(ap, format);
315 tty->print("JNI ");
316 tty->vprint_cr(format, ap);
317 va_end(ap);
318 }
319 }
320 };
321
322 class JNIHistogramElement : public HistogramElement {
323 public:
324 JNIHistogramElement(const char* name);
325 };
326
327 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
328 _name = elementName;
329 uintx count = 0;
330
331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
333 count +=1;
334 if ( (WarnOnStalledSpinLock > 0)
335 && (count % WarnOnStalledSpinLock == 0)) {
336 warning("JNIHistogram_lock seems to be stalled");
337 }
338 }
339 }
340
341
342 if(JNIHistogram == NULL)
343 JNIHistogram = new Histogram("JNI Call Counts",100);
344
345 JNIHistogram->add_element(this);
346 Atomic::dec(&JNIHistogram_lock);
347 }
348
349 #define JNICountWrapper(arg) \
350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
352 if (e != NULL) e->increment_count()
353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
354 #else
355 #define JNIWrapper(arg)
356 #endif
357
358
359 // Implementation of JNI entries
360
361 #ifndef USDT2
362 DT_RETURN_MARK_DECL(DefineClass, jclass);
363 #else /* USDT2 */
364 DT_RETURN_MARK_DECL(DefineClass, jclass
365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
366 #endif /* USDT2 */
367
368 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
369 const jbyte *buf, jsize bufLen))
370 JNIWrapper("DefineClass");
371
372 #ifndef USDT2
373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
374 env, name, loaderRef, buf, bufLen);
375 #else /* USDT2 */
376 HOTSPOT_JNI_DEFINECLASS_ENTRY(
377 env, (char*) name, loaderRef, (char*) buf, bufLen);
378 #endif /* USDT2 */
379 jclass cls = NULL;
380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
381
382 TempNewSymbol class_name = NULL;
383 // Since exceptions can be thrown, class initialization can take place
384 // if name is NULL no check for class name in .class stream has to be made.
385 if (name != NULL) {
386 const int str_len = (int)strlen(name);
387 if (str_len > Symbol::max_length()) {
388 // It's impossible to create this class; the name cannot fit
389 // into the constant pool.
390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
391 }
392 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
393 }
394 ResourceMark rm(THREAD);
395 ClassFileStream st((u1*) buf, bufLen, NULL);
396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
397
398 if (UsePerfData && !class_loader.is_null()) {
399 // check whether the current caller thread holds the lock or not.
400 // If not, increment the corresponding counter
401 if (ObjectSynchronizer::
402 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
403 ObjectSynchronizer::owner_self) {
404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
405 }
406 }
407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
408 Handle(), &st, true,
409 CHECK_NULL);
410
411 if (TraceClassResolution && k != NULL) {
412 trace_class_resolution(k);
413 }
414
415 cls = (jclass)JNIHandles::make_local(
416 env, k->java_mirror());
417 return cls;
418 JNI_END
419
420
421
422 static bool first_time_FindClass = true;
423
424 #ifndef USDT2
425 DT_RETURN_MARK_DECL(FindClass, jclass);
426 #else /* USDT2 */
427 DT_RETURN_MARK_DECL(FindClass, jclass
428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
429 #endif /* USDT2 */
430
431 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
432 JNIWrapper("FindClass");
433 #ifndef USDT2
434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
435 #else /* USDT2 */
436 HOTSPOT_JNI_FINDCLASS_ENTRY(env, (char *)name);
437 #endif /* USDT2 */
438
439 jclass result = NULL;
440 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
441
442 // Remember if we are the first invocation of jni_FindClass
443 bool first_time = first_time_FindClass;
444 first_time_FindClass = false;
445
446 // Sanity check the name: it cannot be null or larger than the maximum size
447 // name we can fit in the constant pool.
448 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
449 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
450 }
451
452 //%note jni_3
453 Handle loader;
454 Handle protection_domain;
455 // Find calling class
456 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
457 if (k.not_null()) {
458 loader = Handle(THREAD, k->class_loader());
459 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
460 // in the correct class context.
461 if (loader.is_null() &&
462 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
463 JavaValue result(T_OBJECT);
464 JavaCalls::call_static(&result, k,
465 vmSymbols::getFromClass_name(),
466 vmSymbols::void_class_signature(),
467 thread);
468 if (HAS_PENDING_EXCEPTION) {
469 Handle ex(thread, thread->pending_exception());
470 CLEAR_PENDING_EXCEPTION;
471 THROW_HANDLE_0(ex);
472 }
473 oop mirror = (oop) result.get_jobject();
474 loader = Handle(THREAD,
475 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
476 protection_domain = Handle(THREAD,
477 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
478 }
479 } else {
480 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
481 loader = Handle(THREAD, SystemDictionary::java_system_loader());
482 }
483
484 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
485 result = find_class_from_class_loader(env, sym, true, loader,
486 protection_domain, true, thread);
487
488 if (TraceClassResolution && result != NULL) {
489 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
490 }
491
492 // If we were the first invocation of jni_FindClass, we enable compilation again
493 // rather than just allowing invocation counter to overflow and decay.
494 // Controlled by flag DelayCompilationDuringStartup.
495 if (first_time && !CompileTheWorld)
496 CompilationPolicy::completed_vm_startup();
497
498 return result;
499 JNI_END
500
501 #ifndef USDT2
502 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
503 #else /* USDT2 */
504 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
505 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
506 #endif /* USDT2 */
507
508 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
509 JNIWrapper("FromReflectedMethod");
510 #ifndef USDT2
511 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
512 #else /* USDT2 */
513 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(env, method);
514 #endif /* USDT2 */
515 jmethodID ret = NULL;
516 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
517
518 // method is a handle to a java.lang.reflect.Method object
519 oop reflected = JNIHandles::resolve_non_null(method);
520 oop mirror = NULL;
521 int slot = 0;
522
523 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
524 mirror = java_lang_reflect_Constructor::clazz(reflected);
525 slot = java_lang_reflect_Constructor::slot(reflected);
526 } else {
527 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
528 mirror = java_lang_reflect_Method::clazz(reflected);
529 slot = java_lang_reflect_Method::slot(reflected);
530 }
531 Klass* k = java_lang_Class::as_Klass(mirror);
532
533 KlassHandle k1(THREAD, k);
534 // Make sure class is initialized before handing id's out to methods
535 k1()->initialize(CHECK_NULL);
536 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
537 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
538 return ret;
539 JNI_END
540
541 #ifndef USDT2
542 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
543 #else /* USDT2 */
544 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
545 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
546 #endif /* USDT2 */
547
548 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
549 JNIWrapper("FromReflectedField");
550 #ifndef USDT2
551 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
552 #else /* USDT2 */
553 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(env, field);
554 #endif /* USDT2 */
555 jfieldID ret = NULL;
556 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
557
558 // field is a handle to a java.lang.reflect.Field object
559 oop reflected = JNIHandles::resolve_non_null(field);
560 oop mirror = java_lang_reflect_Field::clazz(reflected);
561 Klass* k = java_lang_Class::as_Klass(mirror);
562 int slot = java_lang_reflect_Field::slot(reflected);
563 int modifiers = java_lang_reflect_Field::modifiers(reflected);
564
565 KlassHandle k1(THREAD, k);
566 // Make sure class is initialized before handing id's out to fields
567 k1()->initialize(CHECK_NULL);
568
569 // First check if this is a static field
570 if (modifiers & JVM_ACC_STATIC) {
571 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
572 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
573 assert(id != NULL, "corrupt Field object");
574 debug_only(id->set_is_static_field_id();)
575 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
576 ret = jfieldIDWorkaround::to_static_jfieldID(id);
577 return ret;
578 }
579
580 // The slot is the index of the field description in the field-array
581 // The jfieldID is the offset of the field within the object
582 // It may also have hash bits for k, if VerifyJNIFields is turned on.
583 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
584 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
585 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
586 return ret;
587 JNI_END
588
589 #ifndef USDT2
590 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
591 #else /* USDT2 */
592 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
593 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
594 #endif /* USDT2 */
595
596 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
597 JNIWrapper("ToReflectedMethod");
598 #ifndef USDT2
599 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
600 #else /* USDT2 */
601 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(env, cls, (uintptr_t) method_id, isStatic);
602 #endif /* USDT2 */
603 jobject ret = NULL;
604 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
605
606 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
607 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
608 oop reflection_method;
609 if (m->is_initializer()) {
610 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
611 } else {
612 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
613 }
614 ret = JNIHandles::make_local(env, reflection_method);
615 return ret;
616 JNI_END
617
618 #ifndef USDT2
619 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
620 #else /* USDT2 */
621 DT_RETURN_MARK_DECL(GetSuperclass, jclass
622 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
623 #endif /* USDT2 */
624
625 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
626 JNIWrapper("GetSuperclass");
627 #ifndef USDT2
628 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
629 #else /* USDT2 */
630 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(env, sub);
631 #endif /* USDT2 */
632 jclass obj = NULL;
633 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
634
635 oop mirror = JNIHandles::resolve_non_null(sub);
636 // primitive classes return NULL
637 if (java_lang_Class::is_primitive(mirror)) return NULL;
638
639 // Rules of Class.getSuperClass as implemented by KLass::java_super:
640 // arrays return Object
641 // interfaces return NULL
642 // proper classes return Klass::super()
643 Klass* k = java_lang_Class::as_Klass(mirror);
644 if (k->is_interface()) return NULL;
645
646 // return mirror for superclass
647 Klass* super = k->java_super();
648 // super2 is the value computed by the compiler's getSuperClass intrinsic:
649 debug_only(Klass* super2 = ( k->oop_is_array()
650 ? SystemDictionary::Object_klass()
651 : k->super() ) );
652 assert(super == super2,
653 "java_super computation depends on interface, array, other super");
654 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
655 return obj;
656 JNI_END
657
658 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
659 JNIWrapper("IsSubclassOf");
660 #ifndef USDT2
661 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
662 #else /* USDT2 */
663 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(env, sub, super);
664 #endif /* USDT2 */
665 oop sub_mirror = JNIHandles::resolve_non_null(sub);
666 oop super_mirror = JNIHandles::resolve_non_null(super);
667 if (java_lang_Class::is_primitive(sub_mirror) ||
668 java_lang_Class::is_primitive(super_mirror)) {
669 jboolean ret = (sub_mirror == super_mirror);
670 #ifndef USDT2
671 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
672 #else /* USDT2 */
673 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
674 #endif /* USDT2 */
675 return ret;
676 }
677 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
678 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
679 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
680 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
681 JNI_TRUE : JNI_FALSE;
682 #ifndef USDT2
683 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
684 #else /* USDT2 */
685 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
686 #endif /* USDT2 */
687 return ret;
688 JNI_END
689
690 #ifndef USDT2
691 DT_RETURN_MARK_DECL(Throw, jint);
692 #else /* USDT2 */
693 DT_RETURN_MARK_DECL(Throw, jint
694 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
695 #endif /* USDT2 */
696
697 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
698 JNIWrapper("Throw");
699 #ifndef USDT2
700 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
701 #else /* USDT2 */
702 HOTSPOT_JNI_THROW_ENTRY(env, obj);
703 #endif /* USDT2 */
704 jint ret = JNI_OK;
705 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
706
707 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
708 ShouldNotReachHere();
709 JNI_END
710
711 #ifndef USDT2
712 DT_RETURN_MARK_DECL(ThrowNew, jint);
713 #else /* USDT2 */
714 DT_RETURN_MARK_DECL(ThrowNew, jint
715 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
716 #endif /* USDT2 */
717
718 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
719 JNIWrapper("ThrowNew");
720 #ifndef USDT2
721 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
722 #else /* USDT2 */
723 HOTSPOT_JNI_THROWNEW_ENTRY(env, clazz, (char *) message);
724 #endif /* USDT2 */
725 jint ret = JNI_OK;
726 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
727
728 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
729 Symbol* name = k->name();
730 Handle class_loader (THREAD, k->class_loader());
731 Handle protection_domain (THREAD, k->protection_domain());
732 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
733 ShouldNotReachHere();
734 JNI_END
735
736
737 // JNI functions only transform a pending async exception to a synchronous
738 // exception in ExceptionOccurred and ExceptionCheck calls, since
739 // delivering an async exception in other places won't change the native
740 // code's control flow and would be harmful when native code further calls
741 // JNI functions with a pending exception. Async exception is also checked
742 // during the call, so ExceptionOccurred/ExceptionCheck won't return
743 // false but deliver the async exception at the very end during
744 // state transition.
745
746 static void jni_check_async_exceptions(JavaThread *thread) {
747 assert(thread == Thread::current(), "must be itself");
748 thread->check_and_handle_async_exceptions();
749 }
750
751 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
752 JNIWrapper("ExceptionOccurred");
753 #ifndef USDT2
754 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
755 #else /* USDT2 */
756 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(env);
757 #endif /* USDT2 */
758 jni_check_async_exceptions(thread);
759 oop exception = thread->pending_exception();
760 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
761 #ifndef USDT2
762 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
763 #else /* USDT2 */
764 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(ret);
765 #endif /* USDT2 */
766 return ret;
767 JNI_END
768
769
770 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
771 JNIWrapper("ExceptionDescribe");
772 #ifndef USDT2
773 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
774 #else /* USDT2 */
775 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(env);
776 #endif /* USDT2 */
777 if (thread->has_pending_exception()) {
778 Handle ex(thread, thread->pending_exception());
779 thread->clear_pending_exception();
780 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
781 // Don't print anything if we are being killed.
782 } else {
783 jio_fprintf(defaultStream::error_stream(), "Exception ");
784 if (thread != NULL && thread->threadObj() != NULL) {
785 ResourceMark rm(THREAD);
786 jio_fprintf(defaultStream::error_stream(),
787 "in thread \"%s\" ", thread->get_thread_name());
788 }
789 if (ex->is_a(SystemDictionary::Throwable_klass())) {
790 JavaValue result(T_VOID);
791 JavaCalls::call_virtual(&result,
792 ex,
793 KlassHandle(THREAD,
794 SystemDictionary::Throwable_klass()),
795 vmSymbols::printStackTrace_name(),
796 vmSymbols::void_method_signature(),
797 THREAD);
798 // If an exception is thrown in the call it gets thrown away. Not much
799 // we can do with it. The native code that calls this, does not check
800 // for the exception - hence, it might still be in the thread when DestroyVM gets
801 // called, potentially causing a few asserts to trigger - since no pending exception
802 // is expected.
803 CLEAR_PENDING_EXCEPTION;
804 } else {
805 ResourceMark rm(THREAD);
806 jio_fprintf(defaultStream::error_stream(),
807 ". Uncaught exception of type %s.",
808 ex->klass()->external_name());
809 }
810 }
811 }
812 #ifndef USDT2
813 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
814 #else /* USDT2 */
815 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN();
816 #endif /* USDT2 */
817 JNI_END
818
819
820 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
821 JNIWrapper("ExceptionClear");
822 #ifndef USDT2
823 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
824 #else /* USDT2 */
825 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(env);
826 #endif /* USDT2 */
827
828 // The jni code might be using this API to clear java thrown exception.
829 // So just mark jvmti thread exception state as exception caught.
830 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
831 if (state != NULL && state->is_exception_detected()) {
832 state->set_exception_caught();
833 }
834 thread->clear_pending_exception();
835 #ifndef USDT2
836 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
837 #else /* USDT2 */
838 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN();
839 #endif /* USDT2 */
840 JNI_END
841
842
843 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
844 JNIWrapper("FatalError");
845 #ifndef USDT2
846 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
847 #else /* USDT2 */
848 HOTSPOT_JNI_FATALERROR_ENTRY(env, (char *) msg);
849 #endif /* USDT2 */
850 tty->print_cr("FATAL ERROR in native method: %s", msg);
851 thread->print_stack();
852 os::abort(); // Dump core and abort
853 JNI_END
854
855
856 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
857 JNIWrapper("PushLocalFrame");
858 #ifndef USDT2
859 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
860 #else /* USDT2 */
861 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(env, capacity);
862 #endif /* USDT2 */
863 //%note jni_11
864 if (capacity < 0 || capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
865 #ifndef USDT2
866 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
867 #else /* USDT2 */
868 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN((uint32_t)JNI_ERR);
869 #endif /* USDT2 */
870 return JNI_ERR;
871 }
872 JNIHandleBlock* old_handles = thread->active_handles();
873 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
874 assert(new_handles != NULL, "should not be NULL");
875 new_handles->set_pop_frame_link(old_handles);
876 thread->set_active_handles(new_handles);
877 jint ret = JNI_OK;
878 #ifndef USDT2
879 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
880 #else /* USDT2 */
881 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(ret);
882 #endif /* USDT2 */
883 return ret;
884 JNI_END
885
886
887 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
888 JNIWrapper("PopLocalFrame");
889 #ifndef USDT2
890 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
891 #else /* USDT2 */
892 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(env, result);
893 #endif /* USDT2 */
894 //%note jni_11
895 Handle result_handle(thread, JNIHandles::resolve(result));
896 JNIHandleBlock* old_handles = thread->active_handles();
897 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
898 if (new_handles != NULL) {
899 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
900 // This way code will still work if PopLocalFrame is called without a corresponding
901 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
902 // the release_block call will release the blocks.
903 thread->set_active_handles(new_handles);
904 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
905 JNIHandleBlock::release_block(old_handles, thread); // may block
906 result = JNIHandles::make_local(thread, result_handle());
907 }
908 #ifndef USDT2
909 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
910 #else /* USDT2 */
911 HOTSPOT_JNI_POPLOCALFRAME_RETURN(result);
912 #endif /* USDT2 */
913 return result;
914 JNI_END
915
916
917 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
918 JNIWrapper("NewGlobalRef");
919 #ifndef USDT2
920 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
921 #else /* USDT2 */
922 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(env, ref);
923 #endif /* USDT2 */
924 Handle ref_handle(thread, JNIHandles::resolve(ref));
925 jobject ret = JNIHandles::make_global(ref_handle);
926 #ifndef USDT2
927 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
928 #else /* USDT2 */
929 HOTSPOT_JNI_NEWGLOBALREF_RETURN(ret);
930 #endif /* USDT2 */
931 return ret;
932 JNI_END
933
934 // Must be JNI_ENTRY (with HandleMark)
935 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
936 JNIWrapper("DeleteGlobalRef");
937 #ifndef USDT2
938 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
939 #else /* USDT2 */
940 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(env, ref);
941 #endif /* USDT2 */
942 JNIHandles::destroy_global(ref);
943 #ifndef USDT2
944 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
945 #else /* USDT2 */
946 HOTSPOT_JNI_DELETEGLOBALREF_RETURN();
947 #endif /* USDT2 */
948 JNI_END
949
950 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
951 JNIWrapper("DeleteLocalRef");
952 #ifndef USDT2
953 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
954 #else /* USDT2 */
955 HOTSPOT_JNI_DELETELOCALREF_ENTRY(env, obj);
956 #endif /* USDT2 */
957 JNIHandles::destroy_local(obj);
958 #ifndef USDT2
959 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
960 #else /* USDT2 */
961 HOTSPOT_JNI_DELETELOCALREF_RETURN();
962 #endif /* USDT2 */
963 JNI_END
964
965 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
966 JNIWrapper("IsSameObject");
967 #ifndef USDT2
968 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
969 #else /* USDT2 */
970 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(env, r1, r2);
971 #endif /* USDT2 */
972 oop a = JNIHandles::resolve(r1);
973 oop b = JNIHandles::resolve(r2);
974 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
975 #ifndef USDT2
976 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
977 #else /* USDT2 */
978 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(ret);
979 #endif /* USDT2 */
980 return ret;
981 JNI_END
982
983
984 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
985 JNIWrapper("NewLocalRef");
986 #ifndef USDT2
987 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
988 #else /* USDT2 */
989 HOTSPOT_JNI_NEWLOCALREF_ENTRY(env, ref);
990 #endif /* USDT2 */
991 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
992 #ifndef USDT2
993 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
994 #else /* USDT2 */
995 HOTSPOT_JNI_NEWLOCALREF_RETURN(ret);
996 #endif /* USDT2 */
997 return ret;
998 JNI_END
999
1000 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1001 JNIWrapper("EnsureLocalCapacity");
1002 #ifndef USDT2
1003 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1004 #else /* USDT2 */
1005 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(env, capacity);
1006 #endif /* USDT2 */
1007 jint ret;
1008 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1009 ret = JNI_OK;
1010 } else {
1011 ret = JNI_ERR;
1012 }
1013 #ifndef USDT2
1014 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1015 #else /* USDT2 */
1016 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(ret);
1017 #endif /* USDT2 */
1018 return ret;
1019 JNI_END
1020
1021 // Return the Handle Type
1022 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1023 JNIWrapper("GetObjectRefType");
1024 #ifndef USDT2
1025 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1026 #else /* USDT2 */
1027 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(env, obj);
1028 #endif /* USDT2 */
1029 jobjectRefType ret;
1030 if (JNIHandles::is_local_handle(thread, obj) ||
1031 JNIHandles::is_frame_handle(thread, obj))
1032 ret = JNILocalRefType;
1033 else if (JNIHandles::is_global_handle(obj))
1034 ret = JNIGlobalRefType;
1035 else if (JNIHandles::is_weak_global_handle(obj))
1036 ret = JNIWeakGlobalRefType;
1037 else
1038 ret = JNIInvalidRefType;
1039 #ifndef USDT2
1040 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1041 #else /* USDT2 */
1042 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN((void *) ret);
1043 #endif /* USDT2 */
1044 return ret;
1045 JNI_END
1046
1047
1048 class JNI_ArgumentPusher : public SignatureIterator {
1049 protected:
1050 JavaCallArguments* _arguments;
1051
1052 virtual void get_bool () = 0;
1053 virtual void get_char () = 0;
1054 virtual void get_short () = 0;
1055 virtual void get_byte () = 0;
1056 virtual void get_int () = 0;
1057 virtual void get_long () = 0;
1058 virtual void get_float () = 0;
1059 virtual void get_double () = 0;
1060 virtual void get_object () = 0;
1061
1062 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1063 this->_return_type = T_ILLEGAL;
1064 _arguments = NULL;
1065 }
1066
1067 public:
1068 virtual void iterate( uint64_t fingerprint ) = 0;
1069
1070 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1071
1072 inline void do_bool() { if (!is_return_type()) get_bool(); }
1073 inline void do_char() { if (!is_return_type()) get_char(); }
1074 inline void do_short() { if (!is_return_type()) get_short(); }
1075 inline void do_byte() { if (!is_return_type()) get_byte(); }
1076 inline void do_int() { if (!is_return_type()) get_int(); }
1077 inline void do_long() { if (!is_return_type()) get_long(); }
1078 inline void do_float() { if (!is_return_type()) get_float(); }
1079 inline void do_double() { if (!is_return_type()) get_double(); }
1080 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1081 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1082 inline void do_void() { }
1083
1084 JavaCallArguments* arguments() { return _arguments; }
1085 void push_receiver(Handle h) { _arguments->push_oop(h); }
1086 };
1087
1088
1089 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1090 protected:
1091 va_list _ap;
1092
1093 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1094 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1095 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1096 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1097 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1098
1099 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1100
1101 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1102 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1103 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1104 inline void get_object() { jobject l = va_arg(_ap, jobject);
1105 _arguments->push_oop(Handle((oop *)l, false)); }
1106
1107 inline void set_ap(va_list rap) {
1108 #ifdef va_copy
1109 va_copy(_ap, rap);
1110 #elif defined (__va_copy)
1111 __va_copy(_ap, rap);
1112 #else
1113 _ap = rap;
1114 #endif
1115 }
1116
1117 public:
1118 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1119 : JNI_ArgumentPusher(signature) {
1120 set_ap(rap);
1121 }
1122 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1123 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1124 set_ap(rap);
1125 }
1126
1127 // Optimized path if we have the bitvector form of signature
1128 void iterate( uint64_t fingerprint ) {
1129 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1130 else {
1131 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1132 result_feature_mask);
1133
1134 assert(fingerprint, "Fingerprint should not be 0");
1135 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1136 while ( 1 ) {
1137 switch ( fingerprint & parameter_feature_mask ) {
1138 case bool_parm:
1139 case char_parm:
1140 case short_parm:
1141 case byte_parm:
1142 case int_parm:
1143 get_int();
1144 break;
1145 case obj_parm:
1146 get_object();
1147 break;
1148 case long_parm:
1149 get_long();
1150 break;
1151 case float_parm:
1152 get_float();
1153 break;
1154 case double_parm:
1155 get_double();
1156 break;
1157 case done_parm:
1158 return;
1159 break;
1160 default:
1161 ShouldNotReachHere();
1162 break;
1163 }
1164 fingerprint >>= parameter_feature_size;
1165 }
1166 }
1167 }
1168 };
1169
1170
1171 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1172 protected:
1173 const jvalue *_ap;
1174
1175 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1176 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1177 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1178 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1179 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1180
1181 inline void get_long() { _arguments->push_long((_ap++)->j); }
1182 inline void get_float() { _arguments->push_float((_ap++)->f); }
1183 inline void get_double() { _arguments->push_double((_ap++)->d);}
1184 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1185
1186 inline void set_ap(const jvalue *rap) { _ap = rap; }
1187
1188 public:
1189 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1190 : JNI_ArgumentPusher(signature) {
1191 set_ap(rap);
1192 }
1193 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1194 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1195 set_ap(rap);
1196 }
1197
1198 // Optimized path if we have the bitvector form of signature
1199 void iterate( uint64_t fingerprint ) {
1200 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1201 else {
1202 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1203 result_feature_mask);
1204 assert(fingerprint, "Fingerprint should not be 0");
1205 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1206 while ( 1 ) {
1207 switch ( fingerprint & parameter_feature_mask ) {
1208 case bool_parm:
1209 get_bool();
1210 break;
1211 case char_parm:
1212 get_char();
1213 break;
1214 case short_parm:
1215 get_short();
1216 break;
1217 case byte_parm:
1218 get_byte();
1219 break;
1220 case int_parm:
1221 get_int();
1222 break;
1223 case obj_parm:
1224 get_object();
1225 break;
1226 case long_parm:
1227 get_long();
1228 break;
1229 case float_parm:
1230 get_float();
1231 break;
1232 case double_parm:
1233 get_double();
1234 break;
1235 case done_parm:
1236 return;
1237 break;
1238 default:
1239 ShouldNotReachHere();
1240 break;
1241 }
1242 fingerprint >>= parameter_feature_size;
1243 }
1244 }
1245 }
1246 };
1247
1248
1249 enum JNICallType {
1250 JNI_STATIC,
1251 JNI_VIRTUAL,
1252 JNI_NONVIRTUAL
1253 };
1254
1255
1256
1257 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1258 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1259
1260 // Create object to hold arguments for the JavaCall, and associate it with
1261 // the jni parser
1262 ResourceMark rm(THREAD);
1263 int number_of_parameters = method->size_of_parameters();
1264 JavaCallArguments java_args(number_of_parameters);
1265 args->set_java_argument_object(&java_args);
1266
1267 assert(method->is_static(), "method should be static");
1268
1269 // Fill out JavaCallArguments object
1270 args->iterate( Fingerprinter(method).fingerprint() );
1271 // Initialize result type
1272 result->set_type(args->get_ret_type());
1273
1274 // Invoke the method. Result is returned as oop.
1275 JavaCalls::call(result, method, &java_args, CHECK);
1276
1277 // Convert result
1278 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1279 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1280 }
1281 }
1282
1283
1284 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1285 oop recv = JNIHandles::resolve(receiver);
1286 if (recv == NULL) {
1287 THROW(vmSymbols::java_lang_NullPointerException());
1288 }
1289 Handle h_recv(THREAD, recv);
1290
1291 int number_of_parameters;
1292 Method* selected_method;
1293 {
1294 Method* m = Method::resolve_jmethod_id(method_id);
1295 number_of_parameters = m->size_of_parameters();
1296 Klass* holder = m->method_holder();
1297 if (!(holder)->is_interface()) {
1298 // non-interface call -- for that little speed boost, don't handlize
1299 debug_only(No_Safepoint_Verifier nosafepoint;)
1300 if (call_type == JNI_VIRTUAL) {
1301 // jni_GetMethodID makes sure class is linked and initialized
1302 // so m should have a valid vtable index.
1303 assert(!m->has_itable_index(), "");
1304 int vtbl_index = m->vtable_index();
1305 if (vtbl_index != Method::nonvirtual_vtable_index) {
1306 Klass* k = h_recv->klass();
1307 // k might be an arrayKlassOop but all vtables start at
1308 // the same place. The cast is to avoid virtual call and assertion.
1309 InstanceKlass *ik = (InstanceKlass*)k;
1310 selected_method = ik->method_at_vtable(vtbl_index);
1311 } else {
1312 // final method
1313 selected_method = m;
1314 }
1315 } else {
1316 // JNI_NONVIRTUAL call
1317 selected_method = m;
1318 }
1319 } else {
1320 // interface call
1321 KlassHandle h_holder(THREAD, holder);
1322
1323 if (call_type == JNI_VIRTUAL) {
1324 int itbl_index = m->itable_index();
1325 Klass* k = h_recv->klass();
1326 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1327 } else {
1328 selected_method = m;
1329 }
1330 }
1331 }
1332
1333 methodHandle method(THREAD, selected_method);
1334
1335 // Create object to hold arguments for the JavaCall, and associate it with
1336 // the jni parser
1337 ResourceMark rm(THREAD);
1338 JavaCallArguments java_args(number_of_parameters);
1339 args->set_java_argument_object(&java_args);
1340
1341 // handle arguments
1342 assert(!method->is_static(), "method should not be static");
1343 args->push_receiver(h_recv); // Push jobject handle
1344
1345 // Fill out JavaCallArguments object
1346 args->iterate( Fingerprinter(method).fingerprint() );
1347 // Initialize result type
1348 result->set_type(args->get_ret_type());
1349
1350 // Invoke the method. Result is returned as oop.
1351 JavaCalls::call(result, method, &java_args, CHECK);
1352
1353 // Convert result
1354 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1355 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1356 }
1357 }
1358
1359
1360 static instanceOop alloc_object(jclass clazz, TRAPS) {
1361 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1362 if (k == NULL) {
1363 ResourceMark rm(THREAD);
1364 THROW_(vmSymbols::java_lang_InstantiationException(), NULL);
1365 }
1366 k()->check_valid_for_instantiation(false, CHECK_NULL);
1367 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1368 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1369 return ih;
1370 }
1371
1372 #ifndef USDT2
1373 DT_RETURN_MARK_DECL(AllocObject, jobject);
1374 #else /* USDT2 */
1375 DT_RETURN_MARK_DECL(AllocObject, jobject
1376 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1377 #endif /* USDT2 */
1378
1379 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1380 JNIWrapper("AllocObject");
1381
1382 #ifndef USDT2
1383 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1384 #else /* USDT2 */
1385 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(env, clazz);
1386 #endif /* USDT2 */
1387 jobject ret = NULL;
1388 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1389
1390 instanceOop i = alloc_object(clazz, CHECK_NULL);
1391 ret = JNIHandles::make_local(env, i);
1392 return ret;
1393 JNI_END
1394
1395 #ifndef USDT2
1396 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1397 #else /* USDT2 */
1398 DT_RETURN_MARK_DECL(NewObjectA, jobject
1399 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1400 #endif /* USDT2 */
1401
1402 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1403 JNIWrapper("NewObjectA");
1404 #ifndef USDT2
1405 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1406 #else /* USDT2 */
1407 HOTSPOT_JNI_NEWOBJECTA_ENTRY(env, clazz, (uintptr_t) methodID);
1408 #endif /* USDT2 */
1409 jobject obj = NULL;
1410 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1411
1412 instanceOop i = alloc_object(clazz, CHECK_NULL);
1413 obj = JNIHandles::make_local(env, i);
1414 JavaValue jvalue(T_VOID);
1415 JNI_ArgumentPusherArray ap(methodID, args);
1416 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1417 return obj;
1418 JNI_END
1419
1420 #ifndef USDT2
1421 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1422 #else /* USDT2 */
1423 DT_RETURN_MARK_DECL(NewObjectV, jobject
1424 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1425 #endif /* USDT2 */
1426
1427 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1428 JNIWrapper("NewObjectV");
1429 #ifndef USDT2
1430 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1431 #else /* USDT2 */
1432 HOTSPOT_JNI_NEWOBJECTV_ENTRY(env, clazz, (uintptr_t) methodID);
1433 #endif /* USDT2 */
1434 jobject obj = NULL;
1435 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1436
1437 instanceOop i = alloc_object(clazz, CHECK_NULL);
1438 obj = JNIHandles::make_local(env, i);
1439 JavaValue jvalue(T_VOID);
1440 JNI_ArgumentPusherVaArg ap(methodID, args);
1441 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1442 return obj;
1443 JNI_END
1444
1445 #ifndef USDT2
1446 DT_RETURN_MARK_DECL(NewObject, jobject);
1447 #else /* USDT2 */
1448 DT_RETURN_MARK_DECL(NewObject, jobject
1449 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1450 #endif /* USDT2 */
1451
1452 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1453 JNIWrapper("NewObject");
1454 #ifndef USDT2
1455 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1456 #else /* USDT2 */
1457 HOTSPOT_JNI_NEWOBJECT_ENTRY(env, clazz, (uintptr_t) methodID);
1458 #endif /* USDT2 */
1459 jobject obj = NULL;
1460 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1461
1462 instanceOop i = alloc_object(clazz, CHECK_NULL);
1463 obj = JNIHandles::make_local(env, i);
1464 va_list args;
1465 va_start(args, methodID);
1466 JavaValue jvalue(T_VOID);
1467 JNI_ArgumentPusherVaArg ap(methodID, args);
1468 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1469 va_end(args);
1470 return obj;
1471 JNI_END
1472
1473
1474 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1475 JNIWrapper("GetObjectClass");
1476 #ifndef USDT2
1477 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1478 #else /* USDT2 */
1479 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(env, obj);
1480 #endif /* USDT2 */
1481 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1482 jclass ret =
1483 (jclass) JNIHandles::make_local(env, k->java_mirror());
1484 #ifndef USDT2
1485 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1486 #else /* USDT2 */
1487 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(ret);
1488 #endif /* USDT2 */
1489 return ret;
1490 JNI_END
1491
1492 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1493 JNIWrapper("IsInstanceOf");
1494 #ifndef USDT2
1495 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1496 #else /* USDT2 */
1497 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(env, obj, clazz);
1498 #endif /* USDT2 */
1499 jboolean ret = JNI_TRUE;
1500 if (obj != NULL) {
1501 ret = JNI_FALSE;
1502 Klass* k = java_lang_Class::as_Klass(
1503 JNIHandles::resolve_non_null(clazz));
1504 if (k != NULL) {
1505 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1506 }
1507 }
1508 #ifndef USDT2
1509 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1510 #else /* USDT2 */
1511 HOTSPOT_JNI_ISINSTANCEOF_RETURN(ret);
1512 #endif /* USDT2 */
1513 return ret;
1514 JNI_END
1515
1516
1517 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1518 const char *sig, bool is_static, TRAPS) {
1519 // %%%% This code should probably just call into a method in the LinkResolver
1520 //
1521 // The class should have been loaded (we have an instance of the class
1522 // passed in) so the method and signature should already be in the symbol
1523 // table. If they're not there, the method doesn't exist.
1524 const char *name_to_probe = (name_str == NULL)
1525 ? vmSymbols::object_initializer_name()->as_C_string()
1526 : name_str;
1527 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1528 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1529
1530 if (name == NULL || signature == NULL) {
1531 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1532 }
1533
1534 // Throw a NoSuchMethodError exception if we have an instance of a
1535 // primitive java.lang.Class
1536 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1537 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1538 }
1539
1540 KlassHandle klass(THREAD,
1541 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1542
1543 // Make sure class is linked and initialized before handing id's out to
1544 // Method*s.
1545 klass()->initialize(CHECK_NULL);
1546
1547 Method* m;
1548 if (name == vmSymbols::object_initializer_name() ||
1549 name == vmSymbols::class_initializer_name()) {
1550 // Never search superclasses for constructors
1551 if (klass->oop_is_instance()) {
1552 m = InstanceKlass::cast(klass())->find_method(name, signature);
1553 } else {
1554 m = NULL;
1555 }
1556 } else {
1557 m = klass->lookup_method(name, signature);
1558 if (m == NULL && klass->oop_is_instance()) {
1559 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
1560 }
1561 }
1562 if (m == NULL || (m->is_static() != is_static)) {
1563 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1564 }
1565 return m->jmethod_id();
1566 }
1567
1568
1569 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1570 const char *name, const char *sig))
1571 JNIWrapper("GetMethodID");
1572 #ifndef USDT2
1573 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1574 #else /* USDT2 */
1575 HOTSPOT_JNI_GETMETHODID_ENTRY(env, clazz, (char *) name, (char *) sig);
1576 #endif /* USDT2 */
1577 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1578 #ifndef USDT2
1579 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1580 #else /* USDT2 */
1581 HOTSPOT_JNI_GETMETHODID_RETURN((uintptr_t) ret);
1582 #endif /* USDT2 */
1583 return ret;
1584 JNI_END
1585
1586
1587 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1588 const char *name, const char *sig))
1589 JNIWrapper("GetStaticMethodID");
1590 #ifndef USDT2
1591 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1592 #else /* USDT2 */
1593 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(env, (char *) clazz, (char *) name, (char *)sig);
1594 #endif /* USDT2 */
1595 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1596 #ifndef USDT2
1597 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1598 #else /* USDT2 */
1599 HOTSPOT_JNI_GETSTATICMETHODID_RETURN((uintptr_t) ret);
1600 #endif /* USDT2 */
1601 return ret;
1602 JNI_END
1603
1604
1605
1606 //
1607 // Calling Methods
1608 //
1609
1610 #ifndef USDT2
1611 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1612 \
1613 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1614 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1615 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1616 \
1617 JNI_ENTRY(ResultType, \
1618 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1619 JNIWrapper("Call" XSTR(Result) "Method"); \
1620 \
1621 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1622 ResultType ret = 0;\
1623 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1624 (const ResultType&)ret);\
1625 \
1626 va_list args; \
1627 va_start(args, methodID); \
1628 JavaValue jvalue(Tag); \
1629 JNI_ArgumentPusherVaArg ap(methodID, args); \
1630 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1631 va_end(args); \
1632 ret = jvalue.get_##ResultType(); \
1633 return ret;\
1634 JNI_END \
1635 \
1636 \
1637 JNI_ENTRY(ResultType, \
1638 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1639 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1640 \
1641 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1642 ResultType ret = 0;\
1643 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1644 (const ResultType&)ret);\
1645 \
1646 JavaValue jvalue(Tag); \
1647 JNI_ArgumentPusherVaArg ap(methodID, args); \
1648 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1649 ret = jvalue.get_##ResultType(); \
1650 return ret;\
1651 JNI_END \
1652 \
1653 \
1654 JNI_ENTRY(ResultType, \
1655 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1656 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1657 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1658 ResultType ret = 0;\
1659 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1660 (const ResultType&)ret);\
1661 \
1662 JavaValue jvalue(Tag); \
1663 JNI_ArgumentPusherArray ap(methodID, args); \
1664 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1665 ret = jvalue.get_##ResultType(); \
1666 return ret;\
1667 JNI_END
1668
1669 // the runtime type of subword integral basic types is integer
1670 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1671 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1672 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1673 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1674
1675 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1676 DEFINE_CALLMETHOD(jint, Int, T_INT)
1677 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1678 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1679 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1680
1681 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1682 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1683 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1684
1685 #else /* USDT2 */
1686
1687 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1688 , EntryProbe, ReturnProbe) \
1689 \
1690 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1691 , ReturnProbe); \
1692 \
1693 JNI_ENTRY(ResultType, \
1694 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1695 JNIWrapper("Call" XSTR(Result) "Method"); \
1696 \
1697 EntryProbe; \
1698 ResultType ret = 0;\
1699 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1700 (const ResultType&)ret);\
1701 \
1702 va_list args; \
1703 va_start(args, methodID); \
1704 JavaValue jvalue(Tag); \
1705 JNI_ArgumentPusherVaArg ap(methodID, args); \
1706 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1707 va_end(args); \
1708 ret = jvalue.get_##ResultType(); \
1709 return ret;\
1710 JNI_END
1711
1712 // the runtime type of subword integral basic types is integer
1713 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1714 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1715 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1716 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1717 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1718 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1719 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1720 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1721 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1722 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1723 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1724 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1725
1726 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1727 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1728 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1729 DEFINE_CALLMETHOD(jint, Int, T_INT,
1730 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1731 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1732 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1733 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1734 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1735 // Float and double probes don't return value because dtrace doesn't currently support it
1736 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1737 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1738 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1739 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1740 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1741 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1742
1743 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1744 , EntryProbe, ReturnProbe) \
1745 \
1746 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1747 , ReturnProbe); \
1748 \
1749 JNI_ENTRY(ResultType, \
1750 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1751 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1752 \
1753 EntryProbe;\
1754 ResultType ret = 0;\
1755 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1756 (const ResultType&)ret);\
1757 \
1758 JavaValue jvalue(Tag); \
1759 JNI_ArgumentPusherVaArg ap(methodID, args); \
1760 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1761 ret = jvalue.get_##ResultType(); \
1762 return ret;\
1763 JNI_END
1764
1765 // the runtime type of subword integral basic types is integer
1766 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1767 , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1768 HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))
1769 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1770 , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1771 HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))
1772 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1773 , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1774 HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))
1775 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1776 , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1777 HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))
1778
1779 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1780 , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1781 HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))
1782 DEFINE_CALLMETHODV(jint, Int, T_INT,
1783 HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1784 HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))
1785 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1786 , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1787 HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))
1788 // Float and double probes don't return value because dtrace doesn't currently support it
1789 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1790 , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1791 HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())
1792 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1793 , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1794 HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())
1795
1796 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1797 , EntryProbe, ReturnProbe) \
1798 \
1799 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1800 , ReturnProbe); \
1801 \
1802 JNI_ENTRY(ResultType, \
1803 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1804 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1805 EntryProbe; \
1806 ResultType ret = 0;\
1807 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1808 (const ResultType&)ret);\
1809 \
1810 JavaValue jvalue(Tag); \
1811 JNI_ArgumentPusherArray ap(methodID, args); \
1812 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1813 ret = jvalue.get_##ResultType(); \
1814 return ret;\
1815 JNI_END
1816
1817 // the runtime type of subword integral basic types is integer
1818 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1819 , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1820 HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))
1821 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1822 , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1823 HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))
1824 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1825 , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1826 HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))
1827 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1828 , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1829 HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))
1830
1831 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1832 , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1833 HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))
1834 DEFINE_CALLMETHODA(jint, Int, T_INT,
1835 HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1836 HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))
1837 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1838 , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1839 HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))
1840 // Float and double probes don't return value because dtrace doesn't currently support it
1841 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1842 , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1843 HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())
1844 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1845 , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1846 HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())
1847
1848 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1849 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1850 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1851
1852 #endif /* USDT2 */
1853
1854 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1855 JNIWrapper("CallVoidMethod");
1856 #ifndef USDT2
1857 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1858 #else /* USDT2 */
1859 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(env, obj, (uintptr_t) methodID);
1860 #endif /* USDT2 */
1861 DT_VOID_RETURN_MARK(CallVoidMethod);
1862
1863 va_list args;
1864 va_start(args, methodID);
1865 JavaValue jvalue(T_VOID);
1866 JNI_ArgumentPusherVaArg ap(methodID, args);
1867 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1868 va_end(args);
1869 JNI_END
1870
1871
1872 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1873 JNIWrapper("CallVoidMethodV");
1874 #ifndef USDT2
1875 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1876 #else /* USDT2 */
1877 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(env, obj, (uintptr_t) methodID);
1878 #endif /* USDT2 */
1879 DT_VOID_RETURN_MARK(CallVoidMethodV);
1880
1881 JavaValue jvalue(T_VOID);
1882 JNI_ArgumentPusherVaArg ap(methodID, args);
1883 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1884 JNI_END
1885
1886
1887 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1888 JNIWrapper("CallVoidMethodA");
1889 #ifndef USDT2
1890 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1891 #else /* USDT2 */
1892 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(env, obj, (uintptr_t) methodID);
1893 #endif /* USDT2 */
1894 DT_VOID_RETURN_MARK(CallVoidMethodA);
1895
1896 JavaValue jvalue(T_VOID);
1897 JNI_ArgumentPusherArray ap(methodID, args);
1898 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1899 JNI_END
1900
1901
1902 #ifndef USDT2
1903 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1904 \
1905 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1906 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1907 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1908 \
1909 JNI_ENTRY(ResultType, \
1910 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1911 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1912 \
1913 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1914 ResultType ret;\
1915 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1916 (const ResultType&)ret);\
1917 \
1918 va_list args; \
1919 va_start(args, methodID); \
1920 JavaValue jvalue(Tag); \
1921 JNI_ArgumentPusherVaArg ap(methodID, args); \
1922 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1923 va_end(args); \
1924 ret = jvalue.get_##ResultType(); \
1925 return ret;\
1926 JNI_END \
1927 \
1928 JNI_ENTRY(ResultType, \
1929 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1930 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1931 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1932 ResultType ret;\
1933 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1934 (const ResultType&)ret);\
1935 \
1936 JavaValue jvalue(Tag); \
1937 JNI_ArgumentPusherVaArg ap(methodID, args); \
1938 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1939 ret = jvalue.get_##ResultType(); \
1940 return ret;\
1941 JNI_END \
1942 \
1943 JNI_ENTRY(ResultType, \
1944 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1945 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1946 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1947 ResultType ret;\
1948 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1949 (const ResultType&)ret);\
1950 \
1951 JavaValue jvalue(Tag); \
1952 JNI_ArgumentPusherArray ap(methodID, args); \
1953 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1954 ret = jvalue.get_##ResultType(); \
1955 return ret;\
1956 JNI_END
1957
1958 // the runtime type of subword integral basic types is integer
1959 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
1960 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
1961 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
1962 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
1963
1964 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
1965 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
1966 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
1967 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
1968 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
1969
1970
1971 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
1972 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
1973 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
1974
1975 #else /* USDT2 */
1976
1977 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
1978 , EntryProbe, ReturnProbe) \
1979 \
1980 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
1981 , ReturnProbe);\
1982 \
1983 JNI_ENTRY(ResultType, \
1984 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1985 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1986 \
1987 EntryProbe;\
1988 ResultType ret;\
1989 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1990 (const ResultType&)ret);\
1991 \
1992 va_list args; \
1993 va_start(args, methodID); \
1994 JavaValue jvalue(Tag); \
1995 JNI_ArgumentPusherVaArg ap(methodID, args); \
1996 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1997 va_end(args); \
1998 ret = jvalue.get_##ResultType(); \
1999 return ret;\
2000 JNI_END
2001
2002 // the runtime type of subword integral basic types is integer
2003 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2004 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2005 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2006 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2007 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2008 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2009 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2010 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2011 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2012 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2013 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2014 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2015
2016 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2017 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2018 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2019 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2020 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2021 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2022 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2023 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2024 // Float and double probes don't return value because dtrace doesn't currently support it
2025 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2026 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2027 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2028 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2029 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2030 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2031 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2032
2033 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2034 , EntryProbe, ReturnProbe) \
2035 \
2036 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2037 , ReturnProbe);\
2038 \
2039 JNI_ENTRY(ResultType, \
2040 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2041 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2042 \
2043 EntryProbe;\
2044 ResultType ret;\
2045 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2046 (const ResultType&)ret);\
2047 \
2048 JavaValue jvalue(Tag); \
2049 JNI_ArgumentPusherVaArg ap(methodID, args); \
2050 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2051 ret = jvalue.get_##ResultType(); \
2052 return ret;\
2053 JNI_END
2054
2055 // the runtime type of subword integral basic types is integer
2056 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2057 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2058 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2059 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2060 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2061 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2062 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2063 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2064 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2065 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2066 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2067 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2068
2069 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2070 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2071 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2072 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2073 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2074 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2075 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2076 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2077 // Float and double probes don't return value because dtrace doesn't currently support it
2078 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2079 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2080 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2081 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2082 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2083 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2084 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2085
2086 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2087 , EntryProbe, ReturnProbe) \
2088 \
2089 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2090 , ReturnProbe);\
2091 \
2092 JNI_ENTRY(ResultType, \
2093 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2094 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2095 \
2096 EntryProbe;\
2097 ResultType ret;\
2098 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2099 (const ResultType&)ret);\
2100 \
2101 JavaValue jvalue(Tag); \
2102 JNI_ArgumentPusherArray ap(methodID, args); \
2103 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2104 ret = jvalue.get_##ResultType(); \
2105 return ret;\
2106 JNI_END
2107
2108 // the runtime type of subword integral basic types is integer
2109 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2110 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2111 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2112 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2113 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2114 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2115 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2116 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2117 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2118 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2119 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2120 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2121
2122 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2123 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2124 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2125 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2126 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2127 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2128 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2129 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2130 // Float and double probes don't return value because dtrace doesn't currently support it
2131 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2132 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2133 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2134 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2135 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2136 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2137 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2138
2139 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2140 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2141 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2142 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2143 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2144 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2145 #endif /* USDT2 */
2146
2147 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2148 JNIWrapper("CallNonvirtualVoidMethod");
2149
2150 #ifndef USDT2
2151 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2152 env, obj, cls, methodID);
2153 #else /* USDT2 */
2154 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(env, obj, cls, (uintptr_t) methodID);
2155 #endif /* USDT2 */
2156 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2157
2158 va_list args;
2159 va_start(args, methodID);
2160 JavaValue jvalue(T_VOID);
2161 JNI_ArgumentPusherVaArg ap(methodID, args);
2162 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2163 va_end(args);
2164 JNI_END
2165
2166
2167 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2168 JNIWrapper("CallNonvirtualVoidMethodV");
2169
2170 #ifndef USDT2
2171 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2172 env, obj, cls, methodID);
2173 #else /* USDT2 */
2174 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2175 env, obj, cls, (uintptr_t) methodID);
2176 #endif /* USDT2 */
2177 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2178
2179 JavaValue jvalue(T_VOID);
2180 JNI_ArgumentPusherVaArg ap(methodID, args);
2181 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2182 JNI_END
2183
2184
2185 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2186 JNIWrapper("CallNonvirtualVoidMethodA");
2187 #ifndef USDT2
2188 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2189 env, obj, cls, methodID);
2190 #else /* USDT2 */
2191 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2192 env, obj, cls, (uintptr_t) methodID);
2193 #endif /* USDT2 */
2194 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2195 JavaValue jvalue(T_VOID);
2196 JNI_ArgumentPusherArray ap(methodID, args);
2197 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2198 JNI_END
2199
2200
2201 #ifndef USDT2
2202 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2203 \
2204 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2205 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2206 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2207 \
2208 JNI_ENTRY(ResultType, \
2209 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2210 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2211 \
2212 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2213 ResultType ret = 0;\
2214 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2215 (const ResultType&)ret);\
2216 \
2217 va_list args; \
2218 va_start(args, methodID); \
2219 JavaValue jvalue(Tag); \
2220 JNI_ArgumentPusherVaArg ap(methodID, args); \
2221 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2222 va_end(args); \
2223 ret = jvalue.get_##ResultType(); \
2224 return ret;\
2225 JNI_END \
2226 \
2227 JNI_ENTRY(ResultType, \
2228 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2229 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2230 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2231 ResultType ret = 0;\
2232 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2233 (const ResultType&)ret);\
2234 \
2235 JavaValue jvalue(Tag); \
2236 JNI_ArgumentPusherVaArg ap(methodID, args); \
2237 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2238 ret = jvalue.get_##ResultType(); \
2239 return ret;\
2240 JNI_END \
2241 \
2242 JNI_ENTRY(ResultType, \
2243 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2244 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2245 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2246 ResultType ret = 0;\
2247 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2248 (const ResultType&)ret);\
2249 \
2250 JavaValue jvalue(Tag); \
2251 JNI_ArgumentPusherArray ap(methodID, args); \
2252 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2253 ret = jvalue.get_##ResultType(); \
2254 return ret;\
2255 JNI_END
2256
2257 // the runtime type of subword integral basic types is integer
2258 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2259 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2260 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2261 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2262
2263 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2264 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2265 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2266 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2267 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2268
2269
2270 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2271 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2272 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2273
2274 #else /* USDT2 */
2275
2276 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2277 , EntryProbe, ResultProbe) \
2278 \
2279 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2280 , ResultProbe); \
2281 \
2282 JNI_ENTRY(ResultType, \
2283 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2284 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2285 \
2286 EntryProbe; \
2287 ResultType ret = 0;\
2288 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2289 (const ResultType&)ret);\
2290 \
2291 va_list args; \
2292 va_start(args, methodID); \
2293 JavaValue jvalue(Tag); \
2294 JNI_ArgumentPusherVaArg ap(methodID, args); \
2295 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2296 va_end(args); \
2297 ret = jvalue.get_##ResultType(); \
2298 return ret;\
2299 JNI_END
2300
2301 // the runtime type of subword integral basic types is integer
2302 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2303 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2304 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2305 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2306 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2307 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2308 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2309 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2310 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2311 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2312 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2313 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2314
2315 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2316 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2317 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2318 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2319 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2320 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2321 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2322 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2323 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2324 // Float and double probes don't return value because dtrace doesn't currently support it
2325 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2326 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2327 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2328 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2329 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2330 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2331
2332 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2333 , EntryProbe, ResultProbe) \
2334 \
2335 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2336 , ResultProbe); \
2337 \
2338 JNI_ENTRY(ResultType, \
2339 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2340 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2341 \
2342 EntryProbe; \
2343 ResultType ret = 0;\
2344 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2345 (const ResultType&)ret);\
2346 \
2347 JavaValue jvalue(Tag); \
2348 JNI_ArgumentPusherVaArg ap(methodID, args); \
2349 /* Make sure class is initialized before trying to invoke its method */ \
2350 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2351 k()->initialize(CHECK_0); \
2352 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2353 va_end(args); \
2354 ret = jvalue.get_##ResultType(); \
2355 return ret;\
2356 JNI_END
2357
2358 // the runtime type of subword integral basic types is integer
2359 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2360 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2361 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2362 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2363 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2364 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2365 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2366 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2367 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2368 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2369 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2370 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2371
2372 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2373 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2374 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2375 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2376 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2377 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2378 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2379 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2380 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2381 // Float and double probes don't return value because dtrace doesn't currently support it
2382 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2383 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2384 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2385 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2386 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2387 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2388
2389 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2390 , EntryProbe, ResultProbe) \
2391 \
2392 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2393 , ResultProbe); \
2394 \
2395 JNI_ENTRY(ResultType, \
2396 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2397 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2398 \
2399 EntryProbe; \
2400 ResultType ret = 0;\
2401 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2402 (const ResultType&)ret);\
2403 \
2404 JavaValue jvalue(Tag); \
2405 JNI_ArgumentPusherArray ap(methodID, args); \
2406 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2407 ret = jvalue.get_##ResultType(); \
2408 return ret;\
2409 JNI_END
2410
2411 // the runtime type of subword integral basic types is integer
2412 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2413 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2414 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2415 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2416 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2417 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2418 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2419 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2420 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2421 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2422 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2423 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2424
2425 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2426 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2427 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2428 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2429 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2430 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2431 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2432 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2433 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2434 // Float and double probes don't return value because dtrace doesn't currently support it
2435 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2436 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2437 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2438 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2439 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2440 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2441
2442 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2443 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2444 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2445 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2446 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2447 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2448 #endif /* USDT2 */
2449
2450 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2451 JNIWrapper("CallStaticVoidMethod");
2452 #ifndef USDT2
2453 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2454 #else /* USDT2 */
2455 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(env, cls, (uintptr_t) methodID);
2456 #endif /* USDT2 */
2457 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2458
2459 va_list args;
2460 va_start(args, methodID);
2461 JavaValue jvalue(T_VOID);
2462 JNI_ArgumentPusherVaArg ap(methodID, args);
2463 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2464 va_end(args);
2465 JNI_END
2466
2467
2468 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2469 JNIWrapper("CallStaticVoidMethodV");
2470 #ifndef USDT2
2471 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2472 #else /* USDT2 */
2473 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(env, cls, (uintptr_t) methodID);
2474 #endif /* USDT2 */
2475 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2476
2477 JavaValue jvalue(T_VOID);
2478 JNI_ArgumentPusherVaArg ap(methodID, args);
2479 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2480 JNI_END
2481
2482
2483 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2484 JNIWrapper("CallStaticVoidMethodA");
2485 #ifndef USDT2
2486 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2487 #else /* USDT2 */
2488 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(env, cls, (uintptr_t) methodID);
2489 #endif /* USDT2 */
2490 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2491
2492 JavaValue jvalue(T_VOID);
2493 JNI_ArgumentPusherArray ap(methodID, args);
2494 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2495 JNI_END
2496
2497
2498 //
2499 // Accessing Fields
2500 //
2501
2502
2503 #ifndef USDT2
2504 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2505 #else /* USDT2 */
2506 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2507 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2508 #endif /* USDT2 */
2509
2510 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2511 const char *name, const char *sig))
2512 JNIWrapper("GetFieldID");
2513 #ifndef USDT2
2514 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2515 #else /* USDT2 */
2516 HOTSPOT_JNI_GETFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2517 #endif /* USDT2 */
2518 jfieldID ret = 0;
2519 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2520
2521 // The class should have been loaded (we have an instance of the class
2522 // passed in) so the field and signature should already be in the symbol
2523 // table. If they're not there, the field doesn't exist.
2524 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2525 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2526 if (fieldname == NULL || signame == NULL) {
2527 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2528 }
2529 KlassHandle k(THREAD,
2530 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2531 // Make sure class is initialized before handing id's out to fields
2532 k()->initialize(CHECK_NULL);
2533
2534 fieldDescriptor fd;
2535 if (!k()->oop_is_instance() ||
2536 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2537 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2538 }
2539
2540 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2541 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2542 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2543 return ret;
2544 JNI_END
2545
2546
2547 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2548 JNIWrapper("GetObjectField");
2549 #ifndef USDT2
2550 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2551 #else /* USDT2 */
2552 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID);
2553 #endif /* USDT2 */
2554 oop o = JNIHandles::resolve_non_null(obj);
2555 Klass* k = o->klass();
2556 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2557 // Keep JVMTI addition small and only check enabled flag here.
2558 // jni_GetField_probe() assumes that is okay to create handles.
2559 if (JvmtiExport::should_post_field_access()) {
2560 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2561 }
2562 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2563 #if INCLUDE_ALL_GCS
2564 // If G1 is enabled and we are accessing the value of the referent
2565 // field in a reference object then we need to register a non-null
2566 // referent with the SATB barrier.
2567 if (UseG1GC) {
2568 bool needs_barrier = false;
2569
2570 if (ret != NULL &&
2571 offset == java_lang_ref_Reference::referent_offset &&
2572 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2573 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2574 needs_barrier = true;
2575 }
2576
2577 if (needs_barrier) {
2578 oop referent = JNIHandles::resolve(ret);
2579 G1SATBCardTableModRefBS::enqueue(referent);
2580 }
2581 }
2582 #endif // INCLUDE_ALL_GCS
2583 #ifndef USDT2
2584 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2585 #else /* USDT2 */
2586 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(ret);
2587 #endif /* USDT2 */
2588 return ret;
2589 JNI_END
2590
2591
2592 #ifndef USDT2
2593 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2594 \
2595 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2596 \
2597 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2598 JNIWrapper("Get" XSTR(Result) "Field"); \
2599 \
2600 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2601 Return ret = 0;\
2602 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2603 \
2604 oop o = JNIHandles::resolve_non_null(obj); \
2605 Klass* k = o->klass(); \
2606 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2607 /* Keep JVMTI addition small and only check enabled flag here. */ \
2608 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2609 /* and creates a ResetNoHandleMark. */ \
2610 if (JvmtiExport::should_post_field_access()) { \
2611 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2612 } \
2613 ret = o->Fieldname##_field(offset); \
2614 return ret; \
2615 JNI_END
2616
2617 DEFINE_GETFIELD(jboolean, bool, Boolean)
2618 DEFINE_GETFIELD(jbyte, byte, Byte)
2619 DEFINE_GETFIELD(jchar, char, Char)
2620 DEFINE_GETFIELD(jshort, short, Short)
2621 DEFINE_GETFIELD(jint, int, Int)
2622 DEFINE_GETFIELD(jlong, long, Long)
2623 DEFINE_GETFIELD(jfloat, float, Float)
2624 DEFINE_GETFIELD(jdouble, double, Double)
2625
2626 #else /* USDT2 */
2627
2628 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2629 , EntryProbe, ReturnProbe) \
2630 \
2631 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2632 , ReturnProbe); \
2633 \
2634 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2635 JNIWrapper("Get" XSTR(Result) "Field"); \
2636 \
2637 EntryProbe; \
2638 Return ret = 0;\
2639 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2640 \
2641 oop o = JNIHandles::resolve_non_null(obj); \
2642 Klass* k = o->klass(); \
2643 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2644 /* Keep JVMTI addition small and only check enabled flag here. */ \
2645 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2646 /* and creates a ResetNoHandleMark. */ \
2647 if (JvmtiExport::should_post_field_access()) { \
2648 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2649 } \
2650 ret = o->Fieldname##_field(offset); \
2651 return ret; \
2652 JNI_END
2653
2654 DEFINE_GETFIELD(jboolean, bool, Boolean
2655 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2656 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2657 DEFINE_GETFIELD(jbyte, byte, Byte
2658 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2659 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2660 DEFINE_GETFIELD(jchar, char, Char
2661 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2662 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2663 DEFINE_GETFIELD(jshort, short, Short
2664 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2665 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2666 DEFINE_GETFIELD(jint, int, Int
2667 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2668 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2669 DEFINE_GETFIELD(jlong, long, Long
2670 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2671 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2672 // Float and double probes don't return value because dtrace doesn't currently support it
2673 DEFINE_GETFIELD(jfloat, float, Float
2674 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2675 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2676 DEFINE_GETFIELD(jdouble, double, Double
2677 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2678 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2679 #endif /* USDT2 */
2680
2681 address jni_GetBooleanField_addr() {
2682 return (address)jni_GetBooleanField;
2683 }
2684 address jni_GetByteField_addr() {
2685 return (address)jni_GetByteField;
2686 }
2687 address jni_GetCharField_addr() {
2688 return (address)jni_GetCharField;
2689 }
2690 address jni_GetShortField_addr() {
2691 return (address)jni_GetShortField;
2692 }
2693 address jni_GetIntField_addr() {
2694 return (address)jni_GetIntField;
2695 }
2696 address jni_GetLongField_addr() {
2697 return (address)jni_GetLongField;
2698 }
2699 address jni_GetFloatField_addr() {
2700 return (address)jni_GetFloatField;
2701 }
2702 address jni_GetDoubleField_addr() {
2703 return (address)jni_GetDoubleField;
2704 }
2705
2706 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2707 JNIWrapper("SetObjectField");
2708 #ifndef USDT2
2709 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2710 #else /* USDT2 */
2711 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID, value);
2712 #endif /* USDT2 */
2713 oop o = JNIHandles::resolve_non_null(obj);
2714 Klass* k = o->klass();
2715 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2716 // Keep JVMTI addition small and only check enabled flag here.
2717 // jni_SetField_probe_nh() assumes that is not okay to create handles
2718 // and creates a ResetNoHandleMark.
2719 if (JvmtiExport::should_post_field_modification()) {
2720 jvalue field_value;
2721 field_value.l = value;
2722 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2723 }
2724 o->obj_field_put(offset, JNIHandles::resolve(value));
2725 #ifndef USDT2
2726 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2727 #else /* USDT2 */
2728 HOTSPOT_JNI_SETOBJECTFIELD_RETURN();
2729 #endif /* USDT2 */
2730 JNI_END
2731
2732 #ifndef USDT2
2733 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2734 \
2735 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2736 JNIWrapper("Set" XSTR(Result) "Field"); \
2737 \
2738 FP_SELECT_##Result( \
2739 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2740 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2741 \
2742 oop o = JNIHandles::resolve_non_null(obj); \
2743 Klass* k = o->klass(); \
2744 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2745 /* Keep JVMTI addition small and only check enabled flag here. */ \
2746 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2747 /* and creates a ResetNoHandleMark. */ \
2748 if (JvmtiExport::should_post_field_modification()) { \
2749 jvalue field_value; \
2750 field_value.unionType = value; \
2751 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2752 } \
2753 o->Fieldname##_field_put(offset, value); \
2754 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2755 JNI_END
2756
2757 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2758 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2759 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2760 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2761 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2762 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2763 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2764 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2765
2766 #else /* USDT2 */
2767
2768 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2769 , EntryProbe, ReturnProbe) \
2770 \
2771 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2772 JNIWrapper("Set" XSTR(Result) "Field"); \
2773 \
2774 EntryProbe; \
2775 \
2776 oop o = JNIHandles::resolve_non_null(obj); \
2777 Klass* k = o->klass(); \
2778 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2779 /* Keep JVMTI addition small and only check enabled flag here. */ \
2780 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2781 /* and creates a ResetNoHandleMark. */ \
2782 if (JvmtiExport::should_post_field_modification()) { \
2783 jvalue field_value; \
2784 field_value.unionType = value; \
2785 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2786 } \
2787 o->Fieldname##_field_put(offset, value); \
2788 ReturnProbe; \
2789 JNI_END
2790
2791 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2792 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2793 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2794 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2795 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2796 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2797 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2798 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2799 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2800 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2801 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2802 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2803 DEFINE_SETFIELD(jint, int, Int, 'I', i
2804 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2805 HOTSPOT_JNI_SETINTFIELD_RETURN())
2806 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2807 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2808 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2809 // Float and double probes don't return value because dtrace doesn't currently support it
2810 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2811 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2812 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2813 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2814 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2815 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2816 #endif /* USDT2 */
2817
2818 #ifndef USDT2
2819 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2820 #else /* USDT2 */
2821 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2822 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2823 #endif /* USDT2 */
2824
2825 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2826 JNIWrapper("ToReflectedField");
2827 #ifndef USDT2
2828 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2829 env, cls, fieldID, isStatic);
2830 #else /* USDT2 */
2831 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(env, cls, (uintptr_t) fieldID, isStatic);
2832 #endif /* USDT2 */
2833 jobject ret = NULL;
2834 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2835
2836 fieldDescriptor fd;
2837 bool found = false;
2838 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2839
2840 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2841
2842 if (isStatic) {
2843 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2844 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2845 assert(id->is_static_field_id(), "invalid static field id");
2846 found = id->find_local_field(&fd);
2847 } else {
2848 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2849 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2850 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2851 }
2852 assert(found, "bad fieldID passed into jni_ToReflectedField");
2853 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2854 ret = JNIHandles::make_local(env, reflected);
2855 return ret;
2856 JNI_END
2857
2858
2859 //
2860 // Accessing Static Fields
2861 //
2862 #ifndef USDT2
2863 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2864 #else /* USDT2 */
2865 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2866 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2867 #endif /* USDT2 */
2868
2869 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2870 const char *name, const char *sig))
2871 JNIWrapper("GetStaticFieldID");
2872 #ifndef USDT2
2873 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2874 #else /* USDT2 */
2875 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2876 #endif /* USDT2 */
2877 jfieldID ret = NULL;
2878 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2879
2880 // The class should have been loaded (we have an instance of the class
2881 // passed in) so the field and signature should already be in the symbol
2882 // table. If they're not there, the field doesn't exist.
2883 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2884 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2885 if (fieldname == NULL || signame == NULL) {
2886 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2887 }
2888 KlassHandle k(THREAD,
2889 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2890 // Make sure class is initialized before handing id's out to static fields
2891 k()->initialize(CHECK_NULL);
2892
2893 fieldDescriptor fd;
2894 if (!k()->oop_is_instance() ||
2895 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2896 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2897 }
2898
2899 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2900 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2901 debug_only(id->set_is_static_field_id();)
2902
2903 debug_only(id->verify(fd.field_holder()));
2904
2905 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2906 return ret;
2907 JNI_END
2908
2909
2910 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2911 JNIWrapper("GetStaticObjectField");
2912 #ifndef USDT2
2913 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2914 #else /* USDT2 */
2915 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID);
2916 #endif /* USDT2 */
2917 #if INCLUDE_JNI_CHECK
2918 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2919 #endif // INCLUDE_JNI_CHECK
2920 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2921 assert(id->is_static_field_id(), "invalid static field id");
2922 // Keep JVMTI addition small and only check enabled flag here.
2923 // jni_GetField_probe() assumes that is okay to create handles.
2924 if (JvmtiExport::should_post_field_access()) {
2925 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2926 }
2927 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2928 #ifndef USDT2
2929 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2930 #else /* USDT2 */
2931 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(ret);
2932 #endif /* USDT2 */
2933 return ret;
2934 JNI_END
2935
2936 #ifndef USDT2
2937 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
2938 \
2939 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
2940 \
2941 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2942 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2943 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
2944 Return ret = 0;\
2945 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2946 (const Return&)ret);\
2947 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2948 assert(id->is_static_field_id(), "invalid static field id"); \
2949 /* Keep JVMTI addition small and only check enabled flag here. */ \
2950 /* jni_GetField_probe() assumes that is okay to create handles. */ \
2951 if (JvmtiExport::should_post_field_access()) { \
2952 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
2953 } \
2954 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
2955 return ret;\
2956 JNI_END
2957
2958 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
2959 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
2960 DEFINE_GETSTATICFIELD(jchar, char, Char)
2961 DEFINE_GETSTATICFIELD(jshort, short, Short)
2962 DEFINE_GETSTATICFIELD(jint, int, Int)
2963 DEFINE_GETSTATICFIELD(jlong, long, Long)
2964 DEFINE_GETSTATICFIELD(jfloat, float, Float)
2965 DEFINE_GETSTATICFIELD(jdouble, double, Double)
2966
2967 #else /* USDT2 */
2968
2969 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
2970 , EntryProbe, ReturnProbe) \
2971 \
2972 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
2973 , ReturnProbe); \
2974 \
2975 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2976 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2977 EntryProbe; \
2978 Return ret = 0;\
2979 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2980 (const Return&)ret);\
2981 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2982 assert(id->is_static_field_id(), "invalid static field id"); \
2983 /* Keep JVMTI addition small and only check enabled flag here. */ \
2984 /* jni_GetField_probe() assumes that is okay to create handles. */ \
2985 if (JvmtiExport::should_post_field_access()) { \
2986 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
2987 } \
2988 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
2989 return ret;\
2990 JNI_END
2991
2992 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
2993 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
2994 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
2995 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
2996 DEFINE_GETSTATICFIELD(jchar, char, Char
2997 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
2998 DEFINE_GETSTATICFIELD(jshort, short, Short
2999 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3000 DEFINE_GETSTATICFIELD(jint, int, Int
3001 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3002 DEFINE_GETSTATICFIELD(jlong, long, Long
3003 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3004 // Float and double probes don't return value because dtrace doesn't currently support it
3005 DEFINE_GETSTATICFIELD(jfloat, float, Float
3006 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3007 DEFINE_GETSTATICFIELD(jdouble, double, Double
3008 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3009 #endif /* USDT2 */
3010
3011 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3012 JNIWrapper("SetStaticObjectField");
3013 #ifndef USDT2
3014 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3015 #else /* USDT2 */
3016 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value);
3017 #endif /* USDT2 */
3018 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3019 assert(id->is_static_field_id(), "invalid static field id");
3020 // Keep JVMTI addition small and only check enabled flag here.
3021 // jni_SetField_probe() assumes that is okay to create handles.
3022 if (JvmtiExport::should_post_field_modification()) {
3023 jvalue field_value;
3024 field_value.l = value;
3025 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3026 }
3027 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3028 #ifndef USDT2
3029 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3030 #else /* USDT2 */
3031 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN();
3032 #endif /* USDT2 */
3033 JNI_END
3034
3035
3036 #ifndef USDT2
3037 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3038 \
3039 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3040 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3041 FP_SELECT_##Result( \
3042 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3043 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3044 \
3045 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3046 assert(id->is_static_field_id(), "invalid static field id"); \
3047 /* Keep JVMTI addition small and only check enabled flag here. */ \
3048 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3049 if (JvmtiExport::should_post_field_modification()) { \
3050 jvalue field_value; \
3051 field_value.unionType = value; \
3052 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3053 } \
3054 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3055 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3056 JNI_END
3057
3058 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3059 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3060 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3061 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3062 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3063 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3064 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3065 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3066
3067 #else /* USDT2 */
3068
3069 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3070 , EntryProbe, ReturnProbe) \
3071 \
3072 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3073 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3074 EntryProbe; \
3075 \
3076 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3077 assert(id->is_static_field_id(), "invalid static field id"); \
3078 /* Keep JVMTI addition small and only check enabled flag here. */ \
3079 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3080 if (JvmtiExport::should_post_field_modification()) { \
3081 jvalue field_value; \
3082 field_value.unionType = value; \
3083 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3084 } \
3085 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3086 ReturnProbe;\
3087 JNI_END
3088
3089 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3090 , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3091 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3092 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3093 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3094 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3095 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3096 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3097 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3098 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3099 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3100 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3101 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3102 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3103 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3104 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3105 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3106 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3107 // Float and double probes don't return value because dtrace doesn't currently support it
3108 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3109 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3110 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3111 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3112 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3113 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3114 #endif /* USDT2 */
3115
3116 //
3117 // String Operations
3118 //
3119
3120 // Unicode Interface
3121
3122 #ifndef USDT2
3123 DT_RETURN_MARK_DECL(NewString, jstring);
3124 #else /* USDT2 */
3125 DT_RETURN_MARK_DECL(NewString, jstring
3126 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3127 #endif /* USDT2 */
3128
3129 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3130 JNIWrapper("NewString");
3131 #ifndef USDT2
3132 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3133 #else /* USDT2 */
3134 HOTSPOT_JNI_NEWSTRING_ENTRY(env, (uint16_t *) unicodeChars, len);
3135 #endif /* USDT2 */
3136 jstring ret = NULL;
3137 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3138 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3139 ret = (jstring) JNIHandles::make_local(env, string);
3140 return ret;
3141 JNI_END
3142
3143
3144 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3145 JNIWrapper("GetStringLength");
3146 #ifndef USDT2
3147 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3148 #else /* USDT2 */
3149 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(env, string);
3150 #endif /* USDT2 */
3151 jsize ret = 0;
3152 oop s = JNIHandles::resolve_non_null(string);
3153 if (java_lang_String::value(s) != NULL) {
3154 ret = java_lang_String::length(s);
3155 }
3156 #ifndef USDT2
3157 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3158 #else /* USDT2 */
3159 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(ret);
3160 #endif /* USDT2 */
3161 return ret;
3162 JNI_END
3163
3164
3165 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3166 JNIEnv *env, jstring string, jboolean *isCopy))
3167 JNIWrapper("GetStringChars");
3168 #ifndef USDT2
3169 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3170 #else /* USDT2 */
3171 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
3172 #endif /* USDT2 */
3173 jchar* buf = NULL;
3174 oop s = JNIHandles::resolve_non_null(string);
3175 typeArrayOop s_value = java_lang_String::value(s);
3176 if (s_value != NULL) {
3177 int s_len = java_lang_String::length(s);
3178 int s_offset = java_lang_String::offset(s);
3179 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
3180 /* JNI Specification states return NULL on OOM */
3181 if (buf != NULL) {
3182 if (s_len > 0) {
3183 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3184 }
3185 buf[s_len] = 0;
3186 //%note jni_5
3187 if (isCopy != NULL) {
3188 *isCopy = JNI_TRUE;
3189 }
3190 }
3191 }
3192 #ifndef USDT2
3193 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3194 #else /* USDT2 */
3195 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(buf);
3196 #endif /* USDT2 */
3197 return buf;
3198 JNI_END
3199
3200
3201 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3202 JNIWrapper("ReleaseStringChars");
3203 #ifndef USDT2
3204 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3205 #else /* USDT2 */
3206 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(env, str, (uint16_t *) chars);
3207 #endif /* USDT2 */
3208 //%note jni_6
3209 if (chars != NULL) {
3210 // Since String objects are supposed to be immutable, don't copy any
3211 // new data back. A bad user will have to go after the char array.
3212 FreeHeap((void*) chars);
3213 }
3214 #ifndef USDT2
3215 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3216 #else /* USDT2 */
3217 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN();
3218 #endif /* USDT2 */
3219 JNI_END
3220
3221
3222 // UTF Interface
3223
3224 #ifndef USDT2
3225 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3226 #else /* USDT2 */
3227 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3228 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3229 #endif /* USDT2 */
3230
3231 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3232 JNIWrapper("NewStringUTF");
3233 #ifndef USDT2
3234 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3235 #else /* USDT2 */
3236 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(env, (char *) bytes);
3237 #endif /* USDT2 */
3238 jstring ret;
3239 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3240
3241 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3242 ret = (jstring) JNIHandles::make_local(env, result);
3243 return ret;
3244 JNI_END
3245
3246
3247 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3248 JNIWrapper("GetStringUTFLength");
3249 #ifndef USDT2
3250 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3251 #else /* USDT2 */
3252 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(env, string);
3253 #endif /* USDT2 */
3254 jsize ret = 0;
3255 oop java_string = JNIHandles::resolve_non_null(string);
3256 if (java_lang_String::value(java_string) != NULL) {
3257 ret = java_lang_String::utf8_length(java_string);
3258 }
3259 #ifndef USDT2
3260 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3261 #else /* USDT2 */
3262 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(ret);
3263 #endif /* USDT2 */
3264 return ret;
3265 JNI_END
3266
3267
3268 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3269 JNIWrapper("GetStringUTFChars");
3270 #ifndef USDT2
3271 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3272 #else /* USDT2 */
3273 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
3274 #endif /* USDT2 */
3275 char* result = NULL;
3276 oop java_string = JNIHandles::resolve_non_null(string);
3277 if (java_lang_String::value(java_string) != NULL) {
3278 size_t length = java_lang_String::utf8_length(java_string);
3279 /* JNI Specification states return NULL on OOM */
3280 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
3281 if (result != NULL) {
3282 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3283 if (isCopy != NULL) {
3284 *isCopy = JNI_TRUE;
3285 }
3286 }
3287 }
3288 #ifndef USDT2
3289 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3290 #else /* USDT2 */
3291 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(result);
3292 #endif /* USDT2 */
3293 return result;
3294 JNI_END
3295
3296
3297 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3298 JNIWrapper("ReleaseStringUTFChars");
3299 #ifndef USDT2
3300 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3301 #else /* USDT2 */
3302 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(env, str, (char *) chars);
3303 #endif /* USDT2 */
3304 if (chars != NULL) {
3305 FreeHeap((char*) chars);
3306 }
3307 #ifndef USDT2
3308 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3309 #else /* USDT2 */
3310 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN();
3311 #endif /* USDT2 */
3312 JNI_END
3313
3314
3315 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3316 JNIWrapper("GetArrayLength");
3317 #ifndef USDT2
3318 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3319 #else /* USDT2 */
3320 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(env, array);
3321 #endif /* USDT2 */
3322 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3323 assert(a->is_array(), "must be array");
3324 jsize ret = a->length();
3325 #ifndef USDT2
3326 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3327 #else /* USDT2 */
3328 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(ret);
3329 #endif /* USDT2 */
3330 return ret;
3331 JNI_END
3332
3333
3334 //
3335 // Object Array Operations
3336 //
3337
3338 #ifndef USDT2
3339 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3340 #else /* USDT2 */
3341 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3342 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3343 #endif /* USDT2 */
3344
3345 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3346 JNIWrapper("NewObjectArray");
3347 #ifndef USDT2
3348 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3349 #else /* USDT2 */
3350 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(env, length, elementClass, initialElement);
3351 #endif /* USDT2 */
3352 jobjectArray ret = NULL;
3353 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3354 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3355 Klass* ako = ek()->array_klass(CHECK_NULL);
3356 KlassHandle ak = KlassHandle(THREAD, ako);
3357 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3358 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3359 oop initial_value = JNIHandles::resolve(initialElement);
3360 if (initial_value != NULL) { // array already initialized with NULL
3361 for (int index = 0; index < length; index++) {
3362 result->obj_at_put(index, initial_value);
3363 }
3364 }
3365 ret = (jobjectArray) JNIHandles::make_local(env, result);
3366 return ret;
3367 JNI_END
3368
3369 #ifndef USDT2
3370 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3371 #else /* USDT2 */
3372 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3373 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3374 #endif /* USDT2 */
3375
3376 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3377 JNIWrapper("GetObjectArrayElement");
3378 #ifndef USDT2
3379 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3380 #else /* USDT2 */
3381 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(env, array, index);
3382 #endif /* USDT2 */
3383 jobject ret = NULL;
3384 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3385 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3386 if (a->is_within_bounds(index)) {
3387 ret = JNIHandles::make_local(env, a->obj_at(index));
3388 return ret;
3389 } else {
3390 char buf[jintAsStringSize];
3391 sprintf(buf, "%d", index);
3392 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3393 }
3394 JNI_END
3395
3396 #ifndef USDT2
3397 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3398 #else /* USDT2 */
3399 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3400 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3401 #endif /* USDT2 */
3402
3403 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3404 JNIWrapper("SetObjectArrayElement");
3405 #ifndef USDT2
3406 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3407 #else /* USDT2 */
3408 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(env, array, index, value);
3409 #endif /* USDT2 */
3410 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3411
3412 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3413 oop v = JNIHandles::resolve(value);
3414 if (a->is_within_bounds(index)) {
3415 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3416 a->obj_at_put(index, v);
3417 } else {
3418 THROW(vmSymbols::java_lang_ArrayStoreException());
3419 }
3420 } else {
3421 char buf[jintAsStringSize];
3422 sprintf(buf, "%d", index);
3423 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3424 }
3425 JNI_END
3426
3427
3428 #ifndef USDT2
3429 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3430 \
3431 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3432 \
3433 JNI_ENTRY(Return, \
3434 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3435 JNIWrapper("New" XSTR(Result) "Array"); \
3436 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3437 Return ret = NULL;\
3438 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3439 \
3440 oop obj= oopFactory::Allocator(len, CHECK_0); \
3441 ret = (Return) JNIHandles::make_local(env, obj); \
3442 return ret;\
3443 JNI_END
3444
3445 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3446 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3447 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3448 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3449 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3450 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3451 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3452 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3453
3454 #else /* USDT2 */
3455
3456 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3457 ,EntryProbe,ReturnProbe) \
3458 \
3459 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3460 , ReturnProbe); \
3461 \
3462 JNI_ENTRY(Return, \
3463 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3464 JNIWrapper("New" XSTR(Result) "Array"); \
3465 EntryProbe; \
3466 Return ret = NULL;\
3467 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3468 \
3469 oop obj= oopFactory::Allocator(len, CHECK_0); \
3470 ret = (Return) JNIHandles::make_local(env, obj); \
3471 return ret;\
3472 JNI_END
3473
3474 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3475 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3476 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3477 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3478 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3479 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3480 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3481 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3482 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3483 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3484 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3485 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3486 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3487 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3488 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3489 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3490 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3491 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3492 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3493 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3494 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3495 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3496 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3497 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3498 #endif /* USDT2 */
3499
3500 // Return an address which will fault if the caller writes to it.
3501
3502 static char* get_bad_address() {
3503 static char* bad_address = NULL;
3504 if (bad_address == NULL) {
3505 size_t size = os::vm_allocation_granularity();
3506 bad_address = os::reserve_memory(size);
3507 if (bad_address != NULL) {
3508 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3509 /*is_committed*/false);
3510 }
3511 }
3512 return bad_address;
3513 }
3514
3515
3516 #ifndef USDT2
3517 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3518 \
3519 JNI_QUICK_ENTRY(ElementType*, \
3520 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3521 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3522 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3523 /* allocate an chunk of memory in c land */ \
3524 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3525 ElementType* result; \
3526 int len = a->length(); \
3527 if (len == 0) { \
3528 /* Empty array: legal but useless, can't return NULL. \
3529 * Return a pointer to something useless. \
3530 * Avoid asserts in typeArrayOop. */ \
3531 result = (ElementType*)get_bad_address(); \
3532 } else { \
3533 /* JNI Specification states return NULL on OOM */ \
3534 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3535 if (result != NULL) { \
3536 /* copy the array to the c chunk */ \
3537 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3538 if (isCopy) { \
3539 *isCopy = JNI_TRUE; \
3540 } \
3541 } \
3542 } \
3543 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3544 return result; \
3545 JNI_END
3546
3547 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3548 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3549 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3550 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3551 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3552 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3553 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3554 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3555
3556 #else /* USDT2 */
3557
3558 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3559 , EntryProbe, ReturnProbe) \
3560 \
3561 JNI_QUICK_ENTRY(ElementType*, \
3562 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3563 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3564 EntryProbe; \
3565 /* allocate an chunk of memory in c land */ \
3566 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3567 ElementType* result; \
3568 int len = a->length(); \
3569 if (len == 0) { \
3570 /* Empty array: legal but useless, can't return NULL. \
3571 * Return a pointer to something useless. \
3572 * Avoid asserts in typeArrayOop. */ \
3573 result = (ElementType*)get_bad_address(); \
3574 } else { \
3575 /* JNI Specification states return NULL on OOM */ \
3576 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3577 if (result != NULL) { \
3578 /* copy the array to the c chunk */ \
3579 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3580 if (isCopy) { \
3581 *isCopy = JNI_TRUE; \
3582 } \
3583 } \
3584 } \
3585 ReturnProbe; \
3586 return result; \
3587 JNI_END
3588
3589 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3590 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3591 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3592 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3593 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3594 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3595 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3596 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3597 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3598 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3599 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3600 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3601 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3602 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3603 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3604 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3605 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3606 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3607 // Float and double probes don't return value because dtrace doesn't currently support it
3608 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3609 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3610 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3611 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3612 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3613 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3614 #endif /* USDT2 */
3615
3616 #ifndef USDT2
3617 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3618 \
3619 JNI_QUICK_ENTRY(void, \
3620 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3621 ElementType *buf, jint mode)) \
3622 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3623 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3624 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3625 int len = a->length(); \
3626 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3627 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3628 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3629 } \
3630 if ((mode == 0) || (mode == JNI_ABORT)) { \
3631 FreeHeap(buf); \
3632 } \
3633 } \
3634 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3635 JNI_END
3636
3637 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3638 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3639 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3640 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3641 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3642 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3643 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3644 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3645
3646 #else /* USDT2 */
3647
3648 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3649 , EntryProbe, ReturnProbe);\
3650 \
3651 JNI_QUICK_ENTRY(void, \
3652 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3653 ElementType *buf, jint mode)) \
3654 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3655 EntryProbe; \
3656 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3657 int len = a->length(); \
3658 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3659 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3660 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3661 } \
3662 if ((mode == 0) || (mode == JNI_ABORT)) { \
3663 FreeHeap(buf); \
3664 } \
3665 } \
3666 ReturnProbe; \
3667 JNI_END
3668
3669 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3670 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3671 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3672 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3673 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3674 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3675 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3676 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3677 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3678 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3679 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3680 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3681 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3682 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3683 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3684 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3685 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3686 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3687 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3688 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3689 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3690 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3691 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3692 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3693 #endif /* USDT2 */
3694
3695 #ifndef USDT2
3696 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3697 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3698 \
3699 JNI_ENTRY(void, \
3700 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3701 jsize len, ElementType *buf)) \
3702 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3703 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3704 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3705 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3706 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3707 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3708 } else { \
3709 if (len > 0) { \
3710 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3711 memcpy((u_char*) buf, \
3712 (u_char*) src->Tag##_at_addr(start), \
3713 len << sc); \
3714 } \
3715 } \
3716 JNI_END
3717
3718 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3719 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3720 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3721 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3722 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3723 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3724 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3725 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3726
3727 #else /* USDT2 */
3728
3729 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3730 , EntryProbe, ReturnProbe); \
3731 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3732 , ReturnProbe); \
3733 \
3734 JNI_ENTRY(void, \
3735 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3736 jsize len, ElementType *buf)) \
3737 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3738 EntryProbe; \
3739 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3740 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3741 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3742 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3743 } else { \
3744 if (len > 0) { \
3745 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3746 memcpy((u_char*) buf, \
3747 (u_char*) src->Tag##_at_addr(start), \
3748 len << sc); \
3749 } \
3750 } \
3751 JNI_END
3752
3753 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3754 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3755 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3756 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3757 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3758 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3759 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3760 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3761 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3762 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3763 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3764 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3765 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3766 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3767 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3768 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3769 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3770 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3771 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3772 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3773 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3774 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3775 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3776 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3777 #endif /* USDT2 */
3778
3779 #ifndef USDT2
3780 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3781 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3782 \
3783 JNI_ENTRY(void, \
3784 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3785 jsize len, const ElementType *buf)) \
3786 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3787 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3788 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3789 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3790 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3791 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3792 } else { \
3793 if (len > 0) { \
3794 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3795 memcpy((u_char*) dst->Tag##_at_addr(start), \
3796 (u_char*) buf, \
3797 len << sc); \
3798 } \
3799 } \
3800 JNI_END
3801
3802 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3803 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3804 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3805 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3806 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3807 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3808 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3809 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3810
3811 #else /* USDT2 */
3812
3813 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3814 , EntryProbe, ReturnProbe); \
3815 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3816 ,ReturnProbe); \
3817 \
3818 JNI_ENTRY(void, \
3819 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3820 jsize len, const ElementType *buf)) \
3821 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3822 EntryProbe; \
3823 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3824 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3825 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3826 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3827 } else { \
3828 if (len > 0) { \
3829 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3830 memcpy((u_char*) dst->Tag##_at_addr(start), \
3831 (u_char*) buf, \
3832 len << sc); \
3833 } \
3834 } \
3835 JNI_END
3836
3837 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3838 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3839 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3840 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3841 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3842 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3843 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3844 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3845 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3846 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3847 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3848 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3849 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3850 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3851 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3852 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3853 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3854 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3855 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3856 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3857 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3858 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3859 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3860 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3861 #endif /* USDT2 */
3862
3863
3864 //
3865 // Interception of natives
3866 //
3867
3868 // The RegisterNatives call being attempted tried to register with a method that
3869 // is not native. Ask JVM TI what prefixes have been specified. Then check
3870 // to see if the native method is now wrapped with the prefixes. See the
3871 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3872 static Method* find_prefixed_native(KlassHandle k,
3873 Symbol* name, Symbol* signature, TRAPS) {
3874 #if INCLUDE_JVMTI
3875 ResourceMark rm(THREAD);
3876 Method* method;
3877 int name_len = name->utf8_length();
3878 char* name_str = name->as_utf8();
3879 int prefix_count;
3880 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3881 for (int i = 0; i < prefix_count; i++) {
3882 char* prefix = prefixes[i];
3883 int prefix_len = (int)strlen(prefix);
3884
3885 // try adding this prefix to the method name and see if it matches another method name
3886 int trial_len = name_len + prefix_len;
3887 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3888 strcpy(trial_name_str, prefix);
3889 strcat(trial_name_str, name_str);
3890 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3891 if (trial_name == NULL) {
3892 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3893 }
3894 method = k()->lookup_method(trial_name, signature);
3895 if (method == NULL) {
3896 continue; // signature doesn't match, try the next prefix
3897 }
3898 if (method->is_native()) {
3899 method->set_is_prefixed_native();
3900 return method; // wahoo, we found a prefixed version of the method, return it
3901 }
3902 // found as non-native, so prefix is good, add it, probably just need more prefixes
3903 name_len = trial_len;
3904 name_str = trial_name_str;
3905 }
3906 #endif // INCLUDE_JVMTI
3907 return NULL; // not found
3908 }
3909
3910 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3911 Method* method = k()->lookup_method(name, signature);
3912 if (method == NULL) {
3913 ResourceMark rm;
3914 stringStream st;
3915 st.print("Method %s name or signature does not match",
3916 Method::name_and_sig_as_C_string(k(), name, signature));
3917 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3918 }
3919 if (!method->is_native()) {
3920 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3921 method = find_prefixed_native(k, name, signature, THREAD);
3922 if (method == NULL) {
3923 ResourceMark rm;
3924 stringStream st;
3925 st.print("Method %s is not declared as native",
3926 Method::name_and_sig_as_C_string(k(), name, signature));
3927 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3928 }
3929 }
3930
3931 if (entry != NULL) {
3932 method->set_native_function(entry,
3933 Method::native_bind_event_is_interesting);
3934 } else {
3935 method->clear_native_function();
3936 }
3937 if (PrintJNIResolving) {
3938 ResourceMark rm(THREAD);
3939 tty->print_cr("[Registering JNI native method %s.%s]",
3940 method->method_holder()->external_name(),
3941 method->name()->as_C_string());
3942 }
3943 return true;
3944 }
3945
3946 #ifndef USDT2
3947 DT_RETURN_MARK_DECL(RegisterNatives, jint);
3948 #else /* USDT2 */
3949 DT_RETURN_MARK_DECL(RegisterNatives, jint
3950 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
3951 #endif /* USDT2 */
3952
3953 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
3954 const JNINativeMethod *methods,
3955 jint nMethods))
3956 JNIWrapper("RegisterNatives");
3957 #ifndef USDT2
3958 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
3959 #else /* USDT2 */
3960 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(env, clazz, (void *) methods, nMethods);
3961 #endif /* USDT2 */
3962 jint ret = 0;
3963 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
3964
3965 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
3966
3967 for (int index = 0; index < nMethods; index++) {
3968 const char* meth_name = methods[index].name;
3969 const char* meth_sig = methods[index].signature;
3970 int meth_name_len = (int)strlen(meth_name);
3971
3972 // The class should have been loaded (we have an instance of the class
3973 // passed in) so the method and signature should already be in the symbol
3974 // table. If they're not there, the method doesn't exist.
3975 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
3976 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
3977
3978 if (name == NULL || signature == NULL) {
3979 ResourceMark rm;
3980 stringStream st;
3981 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
3982 // Must return negative value on failure
3983 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
3984 }
3985
3986 bool res = register_native(h_k, name, signature,
3987 (address) methods[index].fnPtr, THREAD);
3988 if (!res) {
3989 ret = -1;
3990 break;
3991 }
3992 }
3993 return ret;
3994 JNI_END
3995
3996
3997 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
3998 JNIWrapper("UnregisterNatives");
3999 #ifndef USDT2
4000 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4001 #else /* USDT2 */
4002 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(env, clazz);
4003 #endif /* USDT2 */
4004 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4005 //%note jni_2
4006 if (k->oop_is_instance()) {
4007 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4008 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4009 if (m->is_native()) {
4010 m->clear_native_function();
4011 m->set_signature_handler(NULL);
4012 }
4013 }
4014 }
4015 #ifndef USDT2
4016 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4017 #else /* USDT2 */
4018 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(0);
4019 #endif /* USDT2 */
4020 return 0;
4021 JNI_END
4022
4023 //
4024 // Monitor functions
4025 //
4026
4027 #ifndef USDT2
4028 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4029 #else /* USDT2 */
4030 DT_RETURN_MARK_DECL(MonitorEnter, jint
4031 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4032 #endif /* USDT2 */
4033
4034 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4035 #ifndef USDT2
4036 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4037 #else /* USDT2 */
4038 HOTSPOT_JNI_MONITORENTER_ENTRY(env, jobj);
4039 #endif /* USDT2 */
4040 jint ret = JNI_ERR;
4041 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4042
4043 // If the object is null, we can't do anything with it
4044 if (jobj == NULL) {
4045 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4046 }
4047
4048 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4049 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4050 ret = JNI_OK;
4051 return ret;
4052 JNI_END
4053
4054 #ifndef USDT2
4055 DT_RETURN_MARK_DECL(MonitorExit, jint);
4056 #else /* USDT2 */
4057 DT_RETURN_MARK_DECL(MonitorExit, jint
4058 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4059 #endif /* USDT2 */
4060
4061 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4062 #ifndef USDT2
4063 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4064 #else /* USDT2 */
4065 HOTSPOT_JNI_MONITOREXIT_ENTRY(env, jobj);
4066 #endif /* USDT2 */
4067 jint ret = JNI_ERR;
4068 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4069
4070 // Don't do anything with a null object
4071 if (jobj == NULL) {
4072 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4073 }
4074
4075 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4076 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4077
4078 ret = JNI_OK;
4079 return ret;
4080 JNI_END
4081
4082 //
4083 // Extensions
4084 //
4085
4086 #ifndef USDT2
4087 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4088 #else /* USDT2 */
4089 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4090 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4091 #endif /* USDT2 */
4092
4093 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4094 JNIWrapper("GetStringRegion");
4095 #ifndef USDT2
4096 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4097 #else /* USDT2 */
4098 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(env, string, start, len, buf);
4099 #endif /* USDT2 */
4100 DT_VOID_RETURN_MARK(GetStringRegion);
4101 oop s = JNIHandles::resolve_non_null(string);
4102 int s_len = java_lang_String::length(s);
4103 if (start < 0 || len < 0 || start + len > s_len) {
4104 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4105 } else {
4106 if (len > 0) {
4107 int s_offset = java_lang_String::offset(s);
4108 typeArrayOop s_value = java_lang_String::value(s);
4109 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4110 }
4111 }
4112 JNI_END
4113
4114 #ifndef USDT2
4115 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4116 #else /* USDT2 */
4117 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4118 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4119 #endif /* USDT2 */
4120
4121 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4122 JNIWrapper("GetStringUTFRegion");
4123 #ifndef USDT2
4124 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4125 #else /* USDT2 */
4126 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(env, string, start, len, buf);
4127 #endif /* USDT2 */
4128 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4129 oop s = JNIHandles::resolve_non_null(string);
4130 int s_len = java_lang_String::length(s);
4131 if (start < 0 || len < 0 || start + len > s_len) {
4132 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4133 } else {
4134 //%note jni_7
4135 if (len > 0) {
4136 ResourceMark rm(THREAD);
4137 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4138 int utf_len = (int)strlen(utf_region);
4139 memcpy(buf, utf_region, utf_len);
4140 buf[utf_len] = 0;
4141 } else {
4142 // JDK null-terminates the buffer even in len is zero
4143 if (buf != NULL) {
4144 buf[0] = 0;
4145 }
4146 }
4147 }
4148 JNI_END
4149
4150
4151 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4152 JNIWrapper("GetPrimitiveArrayCritical");
4153 #ifndef USDT2
4154 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4155 #else /* USDT2 */
4156 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(env, array, (uintptr_t *) isCopy);
4157 #endif /* USDT2 */
4158 GC_locker::lock_critical(thread);
4159 if (isCopy != NULL) {
4160 *isCopy = JNI_FALSE;
4161 }
4162 oop a = JNIHandles::resolve_non_null(array);
4163 assert(a->is_array(), "just checking");
4164 BasicType type;
4165 if (a->is_objArray()) {
4166 type = T_OBJECT;
4167 } else {
4168 type = TypeArrayKlass::cast(a->klass())->element_type();
4169 }
4170 void* ret = arrayOop(a)->base(type);
4171 #ifndef USDT2
4172 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4173 #else /* USDT2 */
4174 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(ret);
4175 #endif /* USDT2 */
4176 return ret;
4177 JNI_END
4178
4179
4180 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4181 JNIWrapper("ReleasePrimitiveArrayCritical");
4182 #ifndef USDT2
4183 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4184 #else /* USDT2 */
4185 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(env, array, carray, mode);
4186 #endif /* USDT2 */
4187 // The array, carray and mode arguments are ignored
4188 GC_locker::unlock_critical(thread);
4189 #ifndef USDT2
4190 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4191 #else /* USDT2 */
4192 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN();
4193 #endif /* USDT2 */
4194 JNI_END
4195
4196
4197 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4198 JNIWrapper("GetStringCritical");
4199 #ifndef USDT2
4200 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4201 #else /* USDT2 */
4202 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(env, string, (uintptr_t *) isCopy);
4203 #endif /* USDT2 */
4204 GC_locker::lock_critical(thread);
4205 if (isCopy != NULL) {
4206 *isCopy = JNI_FALSE;
4207 }
4208 oop s = JNIHandles::resolve_non_null(string);
4209 int s_len = java_lang_String::length(s);
4210 typeArrayOop s_value = java_lang_String::value(s);
4211 int s_offset = java_lang_String::offset(s);
4212 const jchar* ret;
4213 if (s_len > 0) {
4214 ret = s_value->char_at_addr(s_offset);
4215 } else {
4216 ret = (jchar*) s_value->base(T_CHAR);
4217 }
4218 #ifndef USDT2
4219 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4220 #else /* USDT2 */
4221 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN((uint16_t *) ret);
4222 #endif /* USDT2 */
4223 return ret;
4224 JNI_END
4225
4226
4227 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4228 JNIWrapper("ReleaseStringCritical");
4229 #ifndef USDT2
4230 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4231 #else /* USDT2 */
4232 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(env, str, (uint16_t *) chars);
4233 #endif /* USDT2 */
4234 // The str and chars arguments are ignored
4235 GC_locker::unlock_critical(thread);
4236 #ifndef USDT2
4237 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4238 #else /* USDT2 */
4239 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN();
4240 #endif /* USDT2 */
4241 JNI_END
4242
4243
4244 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4245 JNIWrapper("jni_NewWeakGlobalRef");
4246 #ifndef USDT2
4247 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4248 #else /* USDT2 */
4249 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(env, ref);
4250 #endif /* USDT2 */
4251 Handle ref_handle(thread, JNIHandles::resolve(ref));
4252 jweak ret = JNIHandles::make_weak_global(ref_handle);
4253 #ifndef USDT2
4254 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4255 #else /* USDT2 */
4256 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(ret);
4257 #endif /* USDT2 */
4258 return ret;
4259 JNI_END
4260
4261 // Must be JNI_ENTRY (with HandleMark)
4262 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4263 JNIWrapper("jni_DeleteWeakGlobalRef");
4264 #ifndef USDT2
4265 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4266 #else /* USDT2 */
4267 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(env, ref);
4268 #endif /* USDT2 */
4269 JNIHandles::destroy_weak_global(ref);
4270 #ifndef USDT2
4271 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4272 #else /* USDT2 */
4273 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN();
4274 #endif /* USDT2 */
4275 JNI_END
4276
4277
4278 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4279 JNIWrapper("jni_ExceptionCheck");
4280 #ifndef USDT2
4281 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4282 #else /* USDT2 */
4283 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(env);
4284 #endif /* USDT2 */
4285 jni_check_async_exceptions(thread);
4286 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4287 #ifndef USDT2
4288 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4289 #else /* USDT2 */
4290 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(ret);
4291 #endif /* USDT2 */
4292 return ret;
4293 JNI_END
4294
4295
4296 // Initialization state for three routines below relating to
4297 // java.nio.DirectBuffers
4298 static jint directBufferSupportInitializeStarted = 0;
4299 static volatile jint directBufferSupportInitializeEnded = 0;
4300 static volatile jint directBufferSupportInitializeFailed = 0;
4301 static jclass bufferClass = NULL;
4302 static jclass directBufferClass = NULL;
4303 static jclass directByteBufferClass = NULL;
4304 static jmethodID directByteBufferConstructor = NULL;
4305 static jfieldID directBufferAddressField = NULL;
4306 static jfieldID bufferCapacityField = NULL;
4307
4308 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4309 Handle loader; // null (bootstrap) loader
4310 Handle protection_domain; // null protection domain
4311
4312 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4313 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4314
4315 if (TraceClassResolution && result != NULL) {
4316 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4317 }
4318 return result;
4319 }
4320
4321 // These lookups are done with the NULL (bootstrap) ClassLoader to
4322 // circumvent any security checks that would be done by jni_FindClass.
4323 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4324 {
4325 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4326 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4327 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4328 return true;
4329 }
4330 JNI_END
4331
4332
4333 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4334 if (directBufferSupportInitializeFailed) {
4335 return false;
4336 }
4337
4338 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4339 if (!lookupDirectBufferClasses(env)) {
4340 directBufferSupportInitializeFailed = 1;
4341 return false;
4342 }
4343
4344 // Make global references for these
4345 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4346 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4347 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4348
4349 // Get needed field and method IDs
4350 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4351 if (env->ExceptionCheck()) {
4352 env->ExceptionClear();
4353 directBufferSupportInitializeFailed = 1;
4354 return false;
4355 }
4356 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4357 if (env->ExceptionCheck()) {
4358 env->ExceptionClear();
4359 directBufferSupportInitializeFailed = 1;
4360 return false;
4361 }
4362 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4363 if (env->ExceptionCheck()) {
4364 env->ExceptionClear();
4365 directBufferSupportInitializeFailed = 1;
4366 return false;
4367 }
4368
4369 if ((directByteBufferConstructor == NULL) ||
4370 (directBufferAddressField == NULL) ||
4371 (bufferCapacityField == NULL)) {
4372 directBufferSupportInitializeFailed = 1;
4373 return false;
4374 }
4375
4376 directBufferSupportInitializeEnded = 1;
4377 } else {
4378 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4379 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4380 // os::sleep which requires the VM state transition. On other platforms, it
4381 // is not necessary. The following call to change the VM state is purposely
4382 // put inside the loop to avoid potential deadlock when multiple threads
4383 // try to call this method. See 6791815 for more details.
4384 ThreadInVMfromNative tivn(thread);
4385 os::yield_all();
4386 }
4387 }
4388
4389 return !directBufferSupportInitializeFailed;
4390 }
4391
4392 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4393 {
4394 // thread_from_jni_environment() will block if VM is gone.
4395 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4396
4397 JNIWrapper("jni_NewDirectByteBuffer");
4398 #ifndef USDT2
4399 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4400 #else /* USDT2 */
4401 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(env, address, capacity);
4402 #endif /* USDT2 */
4403
4404 if (!directBufferSupportInitializeEnded) {
4405 if (!initializeDirectBufferSupport(env, thread)) {
4406 #ifndef USDT2
4407 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4408 #else /* USDT2 */
4409 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(NULL);
4410 #endif /* USDT2 */
4411 return NULL;
4412 }
4413 }
4414
4415 // Being paranoid about accidental sign extension on address
4416 jlong addr = (jlong) ((uintptr_t) address);
4417 // NOTE that package-private DirectByteBuffer constructor currently
4418 // takes int capacity
4419 jint cap = (jint) capacity;
4420 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4421 #ifndef USDT2
4422 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4423 #else /* USDT2 */
4424 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(ret);
4425 #endif /* USDT2 */
4426 return ret;
4427 }
4428
4429 #ifndef USDT2
4430 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4431 #else /* USDT2 */
4432 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4433 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4434 #endif /* USDT2 */
4435
4436 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4437 {
4438 // thread_from_jni_environment() will block if VM is gone.
4439 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4440
4441 JNIWrapper("jni_GetDirectBufferAddress");
4442 #ifndef USDT2
4443 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4444 #else /* USDT2 */
4445 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(env, buf);
4446 #endif /* USDT2 */
4447 void* ret = NULL;
4448 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4449
4450 if (!directBufferSupportInitializeEnded) {
4451 if (!initializeDirectBufferSupport(env, thread)) {
4452 return 0;
4453 }
4454 }
4455
4456 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4457 return 0;
4458 }
4459
4460 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4461 return ret;
4462 }
4463
4464 #ifndef USDT2
4465 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4466 #else /* USDT2 */
4467 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4468 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4469 #endif /* USDT2 */
4470
4471 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4472 {
4473 // thread_from_jni_environment() will block if VM is gone.
4474 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4475
4476 JNIWrapper("jni_GetDirectBufferCapacity");
4477 #ifndef USDT2
4478 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4479 #else /* USDT2 */
4480 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(env, buf);
4481 #endif /* USDT2 */
4482 jlong ret = -1;
4483 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4484
4485 if (!directBufferSupportInitializeEnded) {
4486 if (!initializeDirectBufferSupport(env, thread)) {
4487 ret = 0;
4488 return ret;
4489 }
4490 }
4491
4492 if (buf == NULL) {
4493 return -1;
4494 }
4495
4496 if (!env->IsInstanceOf(buf, directBufferClass)) {
4497 return -1;
4498 }
4499
4500 // NOTE that capacity is currently an int in the implementation
4501 ret = env->GetIntField(buf, bufferCapacityField);
4502 return ret;
4503 }
4504
4505
4506 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4507 JNIWrapper("GetVersion");
4508 #ifndef USDT2
4509 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4510 #else /* USDT2 */
4511 HOTSPOT_JNI_GETVERSION_ENTRY(env);
4512 #endif /* USDT2 */
4513 #ifndef USDT2
4514 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4515 #else /* USDT2 */
4516 HOTSPOT_JNI_GETVERSION_RETURN(CurrentVersion);
4517 #endif /* USDT2 */
4518 return CurrentVersion;
4519 JNI_END
4520
4521 extern struct JavaVM_ main_vm;
4522
4523 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4524 JNIWrapper("jni_GetJavaVM");
4525 #ifndef USDT2
4526 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4527 #else /* USDT2 */
4528 HOTSPOT_JNI_GETJAVAVM_ENTRY(env, (void **) vm);
4529 #endif /* USDT2 */
4530 *vm = (JavaVM *)(&main_vm);
4531 #ifndef USDT2
4532 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4533 #else /* USDT2 */
4534 HOTSPOT_JNI_GETJAVAVM_RETURN(JNI_OK);
4535 #endif /* USDT2 */
4536 return JNI_OK;
4537 JNI_END
4538
4539 // Structure containing all jni functions
4540 struct JNINativeInterface_ jni_NativeInterface = {
4541 NULL,
4542 NULL,
4543 NULL,
4544
4545 NULL,
4546
4547 jni_GetVersion,
4548
4549 jni_DefineClass,
4550 jni_FindClass,
4551
4552 jni_FromReflectedMethod,
4553 jni_FromReflectedField,
4554
4555 jni_ToReflectedMethod,
4556
4557 jni_GetSuperclass,
4558 jni_IsAssignableFrom,
4559
4560 jni_ToReflectedField,
4561
4562 jni_Throw,
4563 jni_ThrowNew,
4564 jni_ExceptionOccurred,
4565 jni_ExceptionDescribe,
4566 jni_ExceptionClear,
4567 jni_FatalError,
4568
4569 jni_PushLocalFrame,
4570 jni_PopLocalFrame,
4571
4572 jni_NewGlobalRef,
4573 jni_DeleteGlobalRef,
4574 jni_DeleteLocalRef,
4575 jni_IsSameObject,
4576
4577 jni_NewLocalRef,
4578 jni_EnsureLocalCapacity,
4579
4580 jni_AllocObject,
4581 jni_NewObject,
4582 jni_NewObjectV,
4583 jni_NewObjectA,
4584
4585 jni_GetObjectClass,
4586 jni_IsInstanceOf,
4587
4588 jni_GetMethodID,
4589
4590 jni_CallObjectMethod,
4591 jni_CallObjectMethodV,
4592 jni_CallObjectMethodA,
4593 jni_CallBooleanMethod,
4594 jni_CallBooleanMethodV,
4595 jni_CallBooleanMethodA,
4596 jni_CallByteMethod,
4597 jni_CallByteMethodV,
4598 jni_CallByteMethodA,
4599 jni_CallCharMethod,
4600 jni_CallCharMethodV,
4601 jni_CallCharMethodA,
4602 jni_CallShortMethod,
4603 jni_CallShortMethodV,
4604 jni_CallShortMethodA,
4605 jni_CallIntMethod,
4606 jni_CallIntMethodV,
4607 jni_CallIntMethodA,
4608 jni_CallLongMethod,
4609 jni_CallLongMethodV,
4610 jni_CallLongMethodA,
4611 jni_CallFloatMethod,
4612 jni_CallFloatMethodV,
4613 jni_CallFloatMethodA,
4614 jni_CallDoubleMethod,
4615 jni_CallDoubleMethodV,
4616 jni_CallDoubleMethodA,
4617 jni_CallVoidMethod,
4618 jni_CallVoidMethodV,
4619 jni_CallVoidMethodA,
4620
4621 jni_CallNonvirtualObjectMethod,
4622 jni_CallNonvirtualObjectMethodV,
4623 jni_CallNonvirtualObjectMethodA,
4624 jni_CallNonvirtualBooleanMethod,
4625 jni_CallNonvirtualBooleanMethodV,
4626 jni_CallNonvirtualBooleanMethodA,
4627 jni_CallNonvirtualByteMethod,
4628 jni_CallNonvirtualByteMethodV,
4629 jni_CallNonvirtualByteMethodA,
4630 jni_CallNonvirtualCharMethod,
4631 jni_CallNonvirtualCharMethodV,
4632 jni_CallNonvirtualCharMethodA,
4633 jni_CallNonvirtualShortMethod,
4634 jni_CallNonvirtualShortMethodV,
4635 jni_CallNonvirtualShortMethodA,
4636 jni_CallNonvirtualIntMethod,
4637 jni_CallNonvirtualIntMethodV,
4638 jni_CallNonvirtualIntMethodA,
4639 jni_CallNonvirtualLongMethod,
4640 jni_CallNonvirtualLongMethodV,
4641 jni_CallNonvirtualLongMethodA,
4642 jni_CallNonvirtualFloatMethod,
4643 jni_CallNonvirtualFloatMethodV,
4644 jni_CallNonvirtualFloatMethodA,
4645 jni_CallNonvirtualDoubleMethod,
4646 jni_CallNonvirtualDoubleMethodV,
4647 jni_CallNonvirtualDoubleMethodA,
4648 jni_CallNonvirtualVoidMethod,
4649 jni_CallNonvirtualVoidMethodV,
4650 jni_CallNonvirtualVoidMethodA,
4651
4652 jni_GetFieldID,
4653
4654 jni_GetObjectField,
4655 jni_GetBooleanField,
4656 jni_GetByteField,
4657 jni_GetCharField,
4658 jni_GetShortField,
4659 jni_GetIntField,
4660 jni_GetLongField,
4661 jni_GetFloatField,
4662 jni_GetDoubleField,
4663
4664 jni_SetObjectField,
4665 jni_SetBooleanField,
4666 jni_SetByteField,
4667 jni_SetCharField,
4668 jni_SetShortField,
4669 jni_SetIntField,
4670 jni_SetLongField,
4671 jni_SetFloatField,
4672 jni_SetDoubleField,
4673
4674 jni_GetStaticMethodID,
4675
4676 jni_CallStaticObjectMethod,
4677 jni_CallStaticObjectMethodV,
4678 jni_CallStaticObjectMethodA,
4679 jni_CallStaticBooleanMethod,
4680 jni_CallStaticBooleanMethodV,
4681 jni_CallStaticBooleanMethodA,
4682 jni_CallStaticByteMethod,
4683 jni_CallStaticByteMethodV,
4684 jni_CallStaticByteMethodA,
4685 jni_CallStaticCharMethod,
4686 jni_CallStaticCharMethodV,
4687 jni_CallStaticCharMethodA,
4688 jni_CallStaticShortMethod,
4689 jni_CallStaticShortMethodV,
4690 jni_CallStaticShortMethodA,
4691 jni_CallStaticIntMethod,
4692 jni_CallStaticIntMethodV,
4693 jni_CallStaticIntMethodA,
4694 jni_CallStaticLongMethod,
4695 jni_CallStaticLongMethodV,
4696 jni_CallStaticLongMethodA,
4697 jni_CallStaticFloatMethod,
4698 jni_CallStaticFloatMethodV,
4699 jni_CallStaticFloatMethodA,
4700 jni_CallStaticDoubleMethod,
4701 jni_CallStaticDoubleMethodV,
4702 jni_CallStaticDoubleMethodA,
4703 jni_CallStaticVoidMethod,
4704 jni_CallStaticVoidMethodV,
4705 jni_CallStaticVoidMethodA,
4706
4707 jni_GetStaticFieldID,
4708
4709 jni_GetStaticObjectField,
4710 jni_GetStaticBooleanField,
4711 jni_GetStaticByteField,
4712 jni_GetStaticCharField,
4713 jni_GetStaticShortField,
4714 jni_GetStaticIntField,
4715 jni_GetStaticLongField,
4716 jni_GetStaticFloatField,
4717 jni_GetStaticDoubleField,
4718
4719 jni_SetStaticObjectField,
4720 jni_SetStaticBooleanField,
4721 jni_SetStaticByteField,
4722 jni_SetStaticCharField,
4723 jni_SetStaticShortField,
4724 jni_SetStaticIntField,
4725 jni_SetStaticLongField,
4726 jni_SetStaticFloatField,
4727 jni_SetStaticDoubleField,
4728
4729 jni_NewString,
4730 jni_GetStringLength,
4731 jni_GetStringChars,
4732 jni_ReleaseStringChars,
4733
4734 jni_NewStringUTF,
4735 jni_GetStringUTFLength,
4736 jni_GetStringUTFChars,
4737 jni_ReleaseStringUTFChars,
4738
4739 jni_GetArrayLength,
4740
4741 jni_NewObjectArray,
4742 jni_GetObjectArrayElement,
4743 jni_SetObjectArrayElement,
4744
4745 jni_NewBooleanArray,
4746 jni_NewByteArray,
4747 jni_NewCharArray,
4748 jni_NewShortArray,
4749 jni_NewIntArray,
4750 jni_NewLongArray,
4751 jni_NewFloatArray,
4752 jni_NewDoubleArray,
4753
4754 jni_GetBooleanArrayElements,
4755 jni_GetByteArrayElements,
4756 jni_GetCharArrayElements,
4757 jni_GetShortArrayElements,
4758 jni_GetIntArrayElements,
4759 jni_GetLongArrayElements,
4760 jni_GetFloatArrayElements,
4761 jni_GetDoubleArrayElements,
4762
4763 jni_ReleaseBooleanArrayElements,
4764 jni_ReleaseByteArrayElements,
4765 jni_ReleaseCharArrayElements,
4766 jni_ReleaseShortArrayElements,
4767 jni_ReleaseIntArrayElements,
4768 jni_ReleaseLongArrayElements,
4769 jni_ReleaseFloatArrayElements,
4770 jni_ReleaseDoubleArrayElements,
4771
4772 jni_GetBooleanArrayRegion,
4773 jni_GetByteArrayRegion,
4774 jni_GetCharArrayRegion,
4775 jni_GetShortArrayRegion,
4776 jni_GetIntArrayRegion,
4777 jni_GetLongArrayRegion,
4778 jni_GetFloatArrayRegion,
4779 jni_GetDoubleArrayRegion,
4780
4781 jni_SetBooleanArrayRegion,
4782 jni_SetByteArrayRegion,
4783 jni_SetCharArrayRegion,
4784 jni_SetShortArrayRegion,
4785 jni_SetIntArrayRegion,
4786 jni_SetLongArrayRegion,
4787 jni_SetFloatArrayRegion,
4788 jni_SetDoubleArrayRegion,
4789
4790 jni_RegisterNatives,
4791 jni_UnregisterNatives,
4792
4793 jni_MonitorEnter,
4794 jni_MonitorExit,
4795
4796 jni_GetJavaVM,
4797
4798 jni_GetStringRegion,
4799 jni_GetStringUTFRegion,
4800
4801 jni_GetPrimitiveArrayCritical,
4802 jni_ReleasePrimitiveArrayCritical,
4803
4804 jni_GetStringCritical,
4805 jni_ReleaseStringCritical,
4806
4807 jni_NewWeakGlobalRef,
4808 jni_DeleteWeakGlobalRef,
4809
4810 jni_ExceptionCheck,
4811
4812 jni_NewDirectByteBuffer,
4813 jni_GetDirectBufferAddress,
4814 jni_GetDirectBufferCapacity,
4815
4816 // New 1_6 features
4817
4818 jni_GetObjectRefType
4819 };
4820
4821
4822 // For jvmti use to modify jni function table.
4823 // Java threads in native contiues to run until it is transitioned
4824 // to VM at safepoint. Before the transition or before it is blocked
4825 // for safepoint it may access jni function table. VM could crash if
4826 // any java thread access the jni function table in the middle of memcpy.
4827 // To avoid this each function pointers are copied automically.
4828 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4829 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4830 intptr_t *a = (intptr_t *) jni_functions();
4831 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4832 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4833 Atomic::store_ptr(*b++, a++);
4834 }
4835 }
4836
4837 void quicken_jni_functions() {
4838 // Replace Get<Primitive>Field with fast versions
4839 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4840 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4841 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4842 // windows x86 currently needs SEH wrapper and the gain of the fast
4843 // versions currently isn't certain for server vm on uniprocessor.
4844 && os::is_MP()
4845 #endif
4846 ) {
4847 address func;
4848 func = JNI_FastGetField::generate_fast_get_boolean_field();
4849 if (func != (address)-1) {
4850 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4851 }
4852 func = JNI_FastGetField::generate_fast_get_byte_field();
4853 if (func != (address)-1) {
4854 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4855 }
4856 func = JNI_FastGetField::generate_fast_get_char_field();
4857 if (func != (address)-1) {
4858 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4859 }
4860 func = JNI_FastGetField::generate_fast_get_short_field();
4861 if (func != (address)-1) {
4862 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4863 }
4864 func = JNI_FastGetField::generate_fast_get_int_field();
4865 if (func != (address)-1) {
4866 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4867 }
4868 func = JNI_FastGetField::generate_fast_get_long_field();
4869 if (func != (address)-1) {
4870 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4871 }
4872 func = JNI_FastGetField::generate_fast_get_float_field();
4873 if (func != (address)-1) {
4874 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4875 }
4876 func = JNI_FastGetField::generate_fast_get_double_field();
4877 if (func != (address)-1) {
4878 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4879 }
4880 }
4881 }
4882
4883 // Returns the function structure
4884 struct JNINativeInterface_* jni_functions() {
4885 #if INCLUDE_JNI_CHECK
4886 if (CheckJNICalls) return jni_functions_check();
4887 #endif // INCLUDE_JNI_CHECK
4888 return &jni_NativeInterface;
4889 }
4890
4891 // Returns the function structure
4892 struct JNINativeInterface_* jni_functions_nocheck() {
4893 return &jni_NativeInterface;
4894 }
4895
4896
4897 // Invocation API
4898
4899
4900 // Forward declaration
4901 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4902
4903 // Global invocation API vars
4904 volatile jint vm_created = 0;
4905 // Indicate whether it is safe to recreate VM
4906 volatile jint safe_to_recreate_vm = 1;
4907 struct JavaVM_ main_vm = {&jni_InvokeInterface};
4908
4909
4910 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
4911 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
4912
4913 #ifndef USDT2
4914 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
4915 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
4916 #else /* USDT2 */
4917 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
4918 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
4919 #endif /* USDT2 */
4920
4921 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
4922 #ifndef USDT2
4923 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
4924 #else /* USDT2 */
4925 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(args_);
4926 #endif /* USDT2 */
4927 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
4928 jint ret = JNI_ERR;
4929 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
4930
4931 if (Threads::is_supported_jni_version(args->version)) {
4932 ret = JNI_OK;
4933 }
4934 // 1.1 style no longer supported in hotspot.
4935 // According the JNI spec, we should update args->version on return.
4936 // We also use the structure to communicate with launcher about default
4937 // stack size.
4938 if (args->version == JNI_VERSION_1_1) {
4939 args->version = JNI_VERSION_1_2;
4940 // javaStackSize is int in arguments structure
4941 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
4942 args->javaStackSize = (jint)(ThreadStackSize * K);
4943 }
4944 return ret;
4945 }
4946
4947 #ifndef PRODUCT
4948
4949 #include "gc_implementation/shared/gcTimer.hpp"
4950 #include "gc_interface/collectedHeap.hpp"
4951 #if INCLUDE_ALL_GCS
4952 #include "gc_implementation/g1/heapRegionRemSet.hpp"
4953 #endif
4954 #include "utilities/quickSort.hpp"
4955 #include "utilities/ostream.hpp"
4956 #if INCLUDE_VM_STRUCTS
4957 #include "runtime/vmStructs.hpp"
4958 #endif
4959
4960 #define run_unit_test(unit_test_function_call) \
4961 tty->print_cr("Running test: " #unit_test_function_call); \
4962 unit_test_function_call
4963
4964 // Forward declaration
4965 void TestReservedSpace_test();
4966 void TestReserveMemorySpecial_test();
4967 void TestVirtualSpace_test();
4968 void TestMetaspaceAux_test();
4969 void TestMetachunk_test();
4970 void TestVirtualSpaceNode_test();
4971 void TestOldFreeSpaceCalculation_test();
4972 #if INCLUDE_ALL_GCS
4973 void TestG1BiasedArray_test();
4974 #endif
4975
4976 void execute_internal_vm_tests() {
4977 if (ExecuteInternalVMTests) {
4978 tty->print_cr("Running internal VM tests");
4979 run_unit_test(TestReservedSpace_test());
4980 run_unit_test(TestReserveMemorySpecial_test());
4981 run_unit_test(TestVirtualSpace_test());
4982 run_unit_test(TestMetaspaceAux_test());
4983 run_unit_test(TestMetachunk_test());
4984 run_unit_test(TestVirtualSpaceNode_test());
4985 run_unit_test(GlobalDefinitions::test_globals());
4986 run_unit_test(GCTimerAllTest::all());
4987 run_unit_test(arrayOopDesc::test_max_array_length());
4988 run_unit_test(CollectedHeap::test_is_in());
4989 run_unit_test(QuickSort::test_quick_sort());
4990 run_unit_test(AltHashing::test_alt_hash());
4991 run_unit_test(test_loggc_filename());
4992 run_unit_test(TestOldFreeSpaceCalculation_test());
4993 #if INCLUDE_VM_STRUCTS
4994 run_unit_test(VMStructs::test());
4995 #endif
4996 #if INCLUDE_ALL_GCS
4997 run_unit_test(TestG1BiasedArray_test());
4998 run_unit_test(HeapRegionRemSet::test_prt());
4999 #endif
5000 tty->print_cr("All internal VM tests passed");
5001 }
5002 }
5003
5004 #undef run_unit_test
5005
5006 #endif
5007
5008 #ifndef USDT2
5009 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5010 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5011 #else /* USDT2 */
5012 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5013 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5014 #endif /* USDT2 */
5015
5016 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5017 #ifndef USDT2
5018 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5019 #else /* USDT2 */
5020 HOTSPOT_JNI_CREATEJAVAVM_ENTRY((void **) vm, penv, args);
5021 #endif /* USDT2 */
5022
5023 jint result = JNI_ERR;
5024 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5025
5026 // We're about to use Atomic::xchg for synchronization. Some Zero
5027 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5028 // but __sync_lock_test_and_set is not guaranteed to do what we want
5029 // on all architectures. So we check it works before relying on it.
5030 #if defined(ZERO) && defined(ASSERT)
5031 {
5032 jint a = 0xcafebabe;
5033 jint b = Atomic::xchg(0xdeadbeef, &a);
5034 void *c = &a;
5035 void *d = Atomic::xchg_ptr(&b, &c);
5036 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5037 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5038 }
5039 #endif // ZERO && ASSERT
5040
5041 // At the moment it's only possible to have one Java VM,
5042 // since some of the runtime state is in global variables.
5043
5044 // We cannot use our mutex locks here, since they only work on
5045 // Threads. We do an atomic compare and exchange to ensure only
5046 // one thread can call this method at a time
5047
5048 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5049 // the add/dec implementations are dependent on whether we are running
5050 // on a multiprocessor, and at this stage of initialization the os::is_MP
5051 // function used to determine this will always return false. Atomic::xchg
5052 // does not have this problem.
5053 if (Atomic::xchg(1, &vm_created) == 1) {
5054 return JNI_EEXIST; // already created, or create attempt in progress
5055 }
5056 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5057 return JNI_ERR; // someone tried and failed and retry not allowed.
5058 }
5059
5060 assert(vm_created == 1, "vm_created is true during the creation");
5061
5062 /**
5063 * Certain errors during initialization are recoverable and do not
5064 * prevent this method from being called again at a later time
5065 * (perhaps with different arguments). However, at a certain
5066 * point during initialization if an error occurs we cannot allow
5067 * this function to be called again (or it will crash). In those
5068 * situations, the 'canTryAgain' flag is set to false, which atomically
5069 * sets safe_to_recreate_vm to 1, such that any new call to
5070 * JNI_CreateJavaVM will immediately fail using the above logic.
5071 */
5072 bool can_try_again = true;
5073
5074 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5075 if (result == JNI_OK) {
5076 JavaThread *thread = JavaThread::current();
5077 assert(!thread->has_pending_exception(), "should have returned not OK");
5078 /* thread is thread_in_vm here */
5079 *vm = (JavaVM *)(&main_vm);
5080 *(JNIEnv**)penv = thread->jni_environment();
5081
5082 // Tracks the time application was running before GC
5083 RuntimeService::record_application_start();
5084
5085 // Notify JVMTI
5086 if (JvmtiExport::should_post_thread_life()) {
5087 JvmtiExport::post_thread_start(thread);
5088 }
5089
5090 EventThreadStart event;
5091 if (event.should_commit()) {
5092 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5093 event.commit();
5094 }
5095
5096 #ifndef PRODUCT
5097 #ifndef TARGET_OS_FAMILY_windows
5098 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5099 #endif
5100
5101 // Check if we should compile all classes on bootclasspath
5102 if (CompileTheWorld) ClassLoader::compile_the_world();
5103 if (ReplayCompiles) ciReplay::replay(thread);
5104
5105 // Some platforms (like Win*) need a wrapper around these test
5106 // functions in order to properly handle error conditions.
5107 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5108 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5109 #endif
5110
5111 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5112 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5113 } else {
5114 // If create_vm exits because of a pending exception, exit with that
5115 // exception. In the future when we figure out how to reclaim memory,
5116 // we may be able to exit with JNI_ERR and allow the calling application
5117 // to continue.
5118 if (Universe::is_fully_initialized()) {
5119 // otherwise no pending exception possible - VM will already have aborted
5120 JavaThread* THREAD = JavaThread::current();
5121 if (HAS_PENDING_EXCEPTION) {
5122 HandleMark hm;
5123 vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
5124 }
5125 }
5126
5127 if (can_try_again) {
5128 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5129 safe_to_recreate_vm = 1;
5130 }
5131
5132 // Creation failed. We must reset vm_created
5133 *vm = 0;
5134 *(JNIEnv**)penv = 0;
5135 // reset vm_created last to avoid race condition. Use OrderAccess to
5136 // control both compiler and architectural-based reordering.
5137 OrderAccess::release_store(&vm_created, 0);
5138 }
5139
5140 return result;
5141 }
5142
5143 #ifndef USDT2
5144 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5145 JavaVM**, jsize, jsize*);
5146 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5147 #endif /* !USDT2 */
5148
5149 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5150 // See bug 4367188, the wrapper can sometimes cause VM crashes
5151 // JNIWrapper("GetCreatedJavaVMs");
5152 #ifndef USDT2
5153 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5154 vm_buf, bufLen, numVMs);
5155 #else /* USDT2 */
5156 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY((void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5157 #endif /* USDT2 */
5158 if (vm_created) {
5159 if (numVMs != NULL) *numVMs = 1;
5160 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5161 } else {
5162 if (numVMs != NULL) *numVMs = 0;
5163 }
5164 #ifndef USDT2
5165 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5166 #else /* USDT2 */
5167 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(JNI_OK);
5168 #endif /* USDT2 */
5169 return JNI_OK;
5170 }
5171
5172 extern "C" {
5173
5174 #ifndef USDT2
5175 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5176 #else /* USDT2 */
5177 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5178 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5179 #endif /* USDT2 */
5180
5181 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5182 #ifndef USDT2
5183 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5184 #else /* USDT2 */
5185 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(vm);
5186 #endif /* USDT2 */
5187 jint res = JNI_ERR;
5188 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5189
5190 if (!vm_created) {
5191 res = JNI_ERR;
5192 return res;
5193 }
5194
5195 JNIWrapper("DestroyJavaVM");
5196 JNIEnv *env;
5197 JavaVMAttachArgs destroyargs;
5198 destroyargs.version = CurrentVersion;
5199 destroyargs.name = (char *)"DestroyJavaVM";
5200 destroyargs.group = NULL;
5201 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5202 if (res != JNI_OK) {
5203 return res;
5204 }
5205
5206 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5207 JavaThread* thread = JavaThread::current();
5208 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5209 if (Threads::destroy_vm()) {
5210 // Should not change thread state, VM is gone
5211 vm_created = false;
5212 res = JNI_OK;
5213 return res;
5214 } else {
5215 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5216 res = JNI_ERR;
5217 return res;
5218 }
5219 }
5220
5221
5222 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5223 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5224
5225 // Check below commented out from JDK1.2fcs as well
5226 /*
5227 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5228 return JNI_EVERSION;
5229 }
5230 */
5231
5232 Thread* t = ThreadLocalStorage::get_thread_slow();
5233 if (t != NULL) {
5234 // If the thread has been attached this operation is a no-op
5235 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5236 return JNI_OK;
5237 }
5238
5239 // Create a thread and mark it as attaching so it will be skipped by the
5240 // ThreadsListEnumerator - see CR 6404306
5241 JavaThread* thread = new JavaThread(true);
5242
5243 // Set correct safepoint info. The thread is going to call into Java when
5244 // initializing the Java level thread object. Hence, the correct state must
5245 // be set in order for the Safepoint code to deal with it correctly.
5246 thread->set_thread_state(_thread_in_vm);
5247 // Must do this before initialize_thread_local_storage
5248 thread->record_stack_base_and_size();
5249
5250 thread->initialize_thread_local_storage();
5251
5252 if (!os::create_attached_thread(thread)) {
5253 delete thread;
5254 return JNI_ERR;
5255 }
5256 // Enable stack overflow checks
5257 thread->create_stack_guard_pages();
5258
5259 thread->initialize_tlab();
5260
5261 thread->cache_global_variables();
5262
5263 // Crucial that we do not have a safepoint check for this thread, since it has
5264 // not been added to the Thread list yet.
5265 { Threads_lock->lock_without_safepoint_check();
5266 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5267 // avoid this thread trying to do a GC before it is added to the thread-list
5268 thread->set_active_handles(JNIHandleBlock::allocate_block());
5269 Threads::add(thread, daemon);
5270 Threads_lock->unlock();
5271 }
5272 // Create thread group and name info from attach arguments
5273 oop group = NULL;
5274 char* thread_name = NULL;
5275 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5276 group = JNIHandles::resolve(args->group);
5277 thread_name = args->name; // may be NULL
5278 }
5279 if (group == NULL) group = Universe::main_thread_group();
5280
5281 // Create Java level thread object and attach it to this thread
5282 bool attach_failed = false;
5283 {
5284 EXCEPTION_MARK;
5285 HandleMark hm(THREAD);
5286 Handle thread_group(THREAD, group);
5287 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5288 if (HAS_PENDING_EXCEPTION) {
5289 CLEAR_PENDING_EXCEPTION;
5290 // cleanup outside the handle mark.
5291 attach_failed = true;
5292 }
5293 }
5294
5295 if (attach_failed) {
5296 // Added missing cleanup
5297 thread->cleanup_failed_attach_current_thread();
5298 return JNI_ERR;
5299 }
5300
5301 // mark the thread as no longer attaching
5302 // this uses a fence to push the change through so we don't have
5303 // to regrab the threads_lock
5304 thread->set_done_attaching_via_jni();
5305
5306 // Set java thread status.
5307 java_lang_Thread::set_thread_status(thread->threadObj(),
5308 java_lang_Thread::RUNNABLE);
5309
5310 // Notify the debugger
5311 if (JvmtiExport::should_post_thread_life()) {
5312 JvmtiExport::post_thread_start(thread);
5313 }
5314
5315 EventThreadStart event;
5316 if (event.should_commit()) {
5317 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5318 event.commit();
5319 }
5320
5321 *(JNIEnv**)penv = thread->jni_environment();
5322
5323 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5324 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5325 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5326 // needed.
5327
5328 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5329
5330 // Perform any platform dependent FPU setup
5331 os::setup_fpu();
5332
5333 return JNI_OK;
5334 }
5335
5336
5337 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5338 #ifndef USDT2
5339 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5340 #else /* USDT2 */
5341 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(vm, penv, _args);
5342 #endif /* USDT2 */
5343 if (!vm_created) {
5344 #ifndef USDT2
5345 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5346 #else /* USDT2 */
5347 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
5348 #endif /* USDT2 */
5349 return JNI_ERR;
5350 }
5351
5352 JNIWrapper("AttachCurrentThread");
5353 jint ret = attach_current_thread(vm, penv, _args, false);
5354 #ifndef USDT2
5355 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5356 #else /* USDT2 */
5357 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(ret);
5358 #endif /* USDT2 */
5359 return ret;
5360 }
5361
5362
5363 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5364 #ifndef USDT2
5365 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5366 #else /* USDT2 */
5367 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(vm);
5368 #endif /* USDT2 */
5369 VM_Exit::block_if_vm_exited();
5370
5371 JNIWrapper("DetachCurrentThread");
5372
5373 // If the thread has been deattacted the operations is a no-op
5374 if (ThreadLocalStorage::thread() == NULL) {
5375 #ifndef USDT2
5376 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5377 #else /* USDT2 */
5378 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
5379 #endif /* USDT2 */
5380 return JNI_OK;
5381 }
5382
5383 JavaThread* thread = JavaThread::current();
5384 if (thread->has_last_Java_frame()) {
5385 #ifndef USDT2
5386 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5387 #else /* USDT2 */
5388 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
5389 #endif /* USDT2 */
5390 // Can't detach a thread that's running java, that can't work.
5391 return JNI_ERR;
5392 }
5393
5394 // Safepoint support. Have to do call-back to safepoint code, if in the
5395 // middel of a safepoint operation
5396 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5397
5398 // XXX: Note that JavaThread::exit() call below removes the guards on the
5399 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5400 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5401 // of the guards is visible in jni_AttachCurrentThread above,
5402 // the removal of the guards is buried below in JavaThread::exit()
5403 // here. The abstraction should be more symmetrically either exposed
5404 // or hidden (e.g. it could probably be hidden in the same
5405 // (platform-dependent) methods where we do alternate stack
5406 // maintenance work?)
5407 thread->exit(false, JavaThread::jni_detach);
5408 delete thread;
5409
5410 #ifndef USDT2
5411 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5412 #else /* USDT2 */
5413 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
5414 #endif /* USDT2 */
5415 return JNI_OK;
5416 }
5417
5418 #ifndef USDT2
5419 DT_RETURN_MARK_DECL(GetEnv, jint);
5420 #else /* USDT2 */
5421 DT_RETURN_MARK_DECL(GetEnv, jint
5422 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5423 #endif /* USDT2 */
5424
5425 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5426 #ifndef USDT2
5427 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5428 #else /* USDT2 */
5429 HOTSPOT_JNI_GETENV_ENTRY(vm, penv, version);
5430 #endif /* USDT2 */
5431 jint ret = JNI_ERR;
5432 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5433
5434 if (!vm_created) {
5435 *penv = NULL;
5436 ret = JNI_EDETACHED;
5437 return ret;
5438 }
5439
5440 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5441 return ret;
5442 }
5443
5444 #ifndef JVMPI_VERSION_1
5445 // need these in order to be polite about older agents
5446 #define JVMPI_VERSION_1 ((jint)0x10000001)
5447 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5448 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5449 #endif // !JVMPI_VERSION_1
5450
5451 Thread* thread = ThreadLocalStorage::thread();
5452 if (thread != NULL && thread->is_Java_thread()) {
5453 if (Threads::is_supported_jni_version_including_1_1(version)) {
5454 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5455 ret = JNI_OK;
5456 return ret;
5457
5458 } else if (version == JVMPI_VERSION_1 ||
5459 version == JVMPI_VERSION_1_1 ||
5460 version == JVMPI_VERSION_1_2) {
5461 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5462 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5463 ret = JNI_EVERSION;
5464 return ret;
5465 } else if (JvmtiExport::is_jvmdi_version(version)) {
5466 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5467 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5468 ret = JNI_EVERSION;
5469 return ret;
5470 } else {
5471 *penv = NULL;
5472 ret = JNI_EVERSION;
5473 return ret;
5474 }
5475 } else {
5476 *penv = NULL;
5477 ret = JNI_EDETACHED;
5478 return ret;
5479 }
5480 }
5481
5482
5483 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5484 #ifndef USDT2
5485 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5486 #else /* USDT2 */
5487 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(vm, penv, _args);
5488 #endif /* USDT2 */
5489 if (!vm_created) {
5490 #ifndef USDT2
5491 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5492 #else /* USDT2 */
5493 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN((uint32_t) JNI_ERR);
5494 #endif /* USDT2 */
5495 return JNI_ERR;
5496 }
5497
5498 JNIWrapper("AttachCurrentThreadAsDaemon");
5499 jint ret = attach_current_thread(vm, penv, _args, true);
5500 #ifndef USDT2
5501 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5502 #else /* USDT2 */
5503 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(ret);
5504 #endif /* USDT2 */
5505 return ret;
5506 }
5507
5508
5509 } // End extern "C"
5510
5511 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5512 NULL,
5513 NULL,
5514 NULL,
5515
5516 jni_DestroyJavaVM,
5517 jni_AttachCurrentThread,
5518 jni_DetachCurrentThread,
5519 jni_GetEnv,
5520 jni_AttachCurrentThreadAsDaemon
5521 };