1 /*
2 * Copyright (c) 1997, 2012, 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 #ifndef SERIALGC
36 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
37 #endif // SERIALGC
38 #include "memory/allocation.hpp"
39 #include "memory/allocation.inline.hpp"
40 #include "memory/gcLocker.inline.hpp"
41 #include "memory/oopFactory.hpp"
42 #include "memory/universe.inline.hpp"
43 #include "oops/instanceKlass.hpp"
44 #include "oops/instanceOop.hpp"
45 #include "oops/markOop.hpp"
46 #include "oops/method.hpp"
47 #include "oops/objArrayKlass.hpp"
48 #include "oops/objArrayOop.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "oops/symbol.hpp"
51 #include "oops/typeArrayKlass.hpp"
52 #include "oops/typeArrayOop.hpp"
53 #include "prims/jni.h"
54 #include "prims/jniCheck.hpp"
55 #include "prims/jniExport.hpp"
56 #include "prims/jniFastGetField.hpp"
57 #include "prims/jvm.h"
58 #include "prims/jvm_misc.hpp"
59 #include "prims/jvmtiExport.hpp"
60 #include "prims/jvmtiThreadState.hpp"
61 #include "runtime/compilationPolicy.hpp"
62 #include "runtime/fieldDescriptor.hpp"
63 #include "runtime/fprofiler.hpp"
64 #include "runtime/handles.inline.hpp"
65 #include "runtime/interfaceSupport.hpp"
66 #include "runtime/java.hpp"
67 #include "runtime/javaCalls.hpp"
68 #include "runtime/jfieldIDWorkaround.hpp"
69 #include "runtime/reflection.hpp"
70 #include "runtime/sharedRuntime.hpp"
71 #include "runtime/signature.hpp"
72 #include "runtime/vm_operations.hpp"
73 #include "services/runtimeService.hpp"
74 #include "trace/tracing.hpp"
75 #include "trace/traceEventTypes.hpp"
76 #include "utilities/defaultStream.hpp"
77 #include "utilities/dtrace.hpp"
78 #include "utilities/events.hpp"
79 #include "utilities/histogram.hpp"
80 #ifdef TARGET_OS_FAMILY_linux
81 # include "os_linux.inline.hpp"
82 # include "thread_linux.inline.hpp"
83 #endif
84 #ifdef TARGET_OS_FAMILY_solaris
85 # include "os_solaris.inline.hpp"
86 # include "thread_solaris.inline.hpp"
87 #endif
88 #ifdef TARGET_OS_FAMILY_windows
89 # include "os_windows.inline.hpp"
90 # include "thread_windows.inline.hpp"
91 #endif
92 #ifdef TARGET_OS_FAMILY_bsd
93 # include "os_bsd.inline.hpp"
94 # include "thread_bsd.inline.hpp"
95 #endif
96
97 static jint CurrentVersion = JNI_VERSION_1_6;
98
99
100 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
101 // '-return' probe regardless of the return path is taken out of the function.
102 // Methods that have multiple return paths use this to avoid having to
103 // instrument each return path. Methods that use CHECK or THROW must use this
104 // since those macros can cause an immedate uninstrumented return.
105 //
106 // In order to get the return value, a reference to the variable containing
107 // the return value must be passed to the contructor of the object, and
108 // the return value must be set before return (since the mark object has
109 // a reference to it).
110 //
111 // Example:
112 // DT_RETURN_MARK_DECL(SomeFunc, int);
113 // JNI_ENTRY(int, SomeFunc, ...)
114 // int return_value = 0;
115 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
116 // foo(CHECK_0)
117 // return_value = 5;
118 // return return_value;
119 // JNI_END
120 #ifndef USDT2
121 #define DT_RETURN_MARK_DECL(name, type) \
122 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
123 DTRACE_ONLY( \
124 class DTraceReturnProbeMark_##name { \
125 public: \
126 const type& _ret_ref; \
127 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
128 ~DTraceReturnProbeMark_##name() { \
129 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
130 } \
131 } \
132 )
133 // Void functions are simpler since there's no return value
134 #define DT_VOID_RETURN_MARK_DECL(name) \
135 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
136 DTRACE_ONLY( \
137 class DTraceReturnProbeMark_##name { \
138 public: \
139 ~DTraceReturnProbeMark_##name() { \
140 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
141 } \
142 } \
143 )
144
145 #else /* USDT2 */
146
147 #define DT_RETURN_MARK_DECL(name, type, probe) \
148 DTRACE_ONLY( \
149 class DTraceReturnProbeMark_##name { \
150 public: \
151 const type& _ret_ref; \
152 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
153 ~DTraceReturnProbeMark_##name() { \
154 probe; \
155 } \
156 } \
157 )
158 // Void functions are simpler since there's no return value
159 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
160 DTRACE_ONLY( \
161 class DTraceReturnProbeMark_##name { \
162 public: \
163 ~DTraceReturnProbeMark_##name() { \
164 probe; \
165 } \
166 } \
167 )
168 #endif /* USDT2 */
169
170 // Place these macros in the function to mark the return. Non-void
171 // functions need the type and address of the return value.
172 #define DT_RETURN_MARK(name, type, ref) \
173 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
174 #define DT_VOID_RETURN_MARK(name) \
175 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
176
177
178 // Use these to select distinct code for floating-point vs. non-floating point
179 // situations. Used from within common macros where we need slightly
180 // different behavior for Float/Double
181 #define FP_SELECT_Boolean(intcode, fpcode) intcode
182 #define FP_SELECT_Byte(intcode, fpcode) intcode
183 #define FP_SELECT_Char(intcode, fpcode) intcode
184 #define FP_SELECT_Short(intcode, fpcode) intcode
185 #define FP_SELECT_Object(intcode, fpcode) intcode
186 #define FP_SELECT_Int(intcode, fpcode) intcode
187 #define FP_SELECT_Long(intcode, fpcode) intcode
188 #define FP_SELECT_Float(intcode, fpcode) fpcode
189 #define FP_SELECT_Double(intcode, fpcode) fpcode
190 #define FP_SELECT(TypeName, intcode, fpcode) \
191 FP_SELECT_##TypeName(intcode, fpcode)
192
193 #define COMMA ,
194
195 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
196 // (dtrace doesn't do FP yet)
197 #ifndef USDT2
198 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
199 FP_SELECT(TypeName, \
200 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
201 #else /* USDT2 */
202 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
203 FP_SELECT(TypeName, \
204 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
205 #endif /* USDT2 */
206 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
207 FP_SELECT(TypeName, \
208 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
209
210
211 // out-of-line helpers for class jfieldIDWorkaround:
212
213 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
214 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
215 uintptr_t as_uint = (uintptr_t) id;
216 intptr_t offset = raw_instance_offset(id);
217 if (is_checked_jfieldID(id)) {
218 if (!klass_hash_ok(k, id)) {
219 return false;
220 }
221 }
222 return InstanceKlass::cast(k)->contains_field_offset(offset);
223 } else {
224 JNIid* result = (JNIid*) id;
225 #ifdef ASSERT
226 return result != NULL && result->is_static_field_id();
227 #else
228 return result != NULL;
229 #endif
230 }
231 }
232
233
234 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
235 if (offset <= small_offset_mask) {
236 Klass* field_klass = k;
237 Klass* super_klass = field_klass->super();
238 // With compressed oops the most super class with nonstatic fields would
239 // be the owner of fields embedded in the header.
240 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
241 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
242 field_klass = super_klass; // super contains the field also
243 super_klass = field_klass->super();
244 }
245 debug_only(No_Safepoint_Verifier nosafepoint;)
246 uintptr_t klass_hash = field_klass->identity_hash();
247 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
248 } else {
249 #if 0
250 #ifndef PRODUCT
251 {
252 ResourceMark rm;
253 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
254 }
255 #endif
256 #endif
257 return 0;
258 }
259 }
260
261 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
262 uintptr_t as_uint = (uintptr_t) id;
263 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
264 do {
265 debug_only(No_Safepoint_Verifier nosafepoint;)
266 // Could use a non-blocking query for identity_hash here...
267 if ((k->identity_hash() & klass_mask) == klass_hash)
268 return true;
269 k = k->super();
270 } while (k != NULL);
271 return false;
272 }
273
274 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
275 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
276 uintptr_t as_uint = (uintptr_t) id;
277 intptr_t offset = raw_instance_offset(id);
278 if (VerifyJNIFields) {
279 if (is_checked_jfieldID(id)) {
280 guarantee(klass_hash_ok(k, id),
281 "Bug in native code: jfieldID class must match object");
282 } else {
283 #if 0
284 #ifndef PRODUCT
285 if (Verbose) {
286 ResourceMark rm;
287 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
288 }
289 #endif
290 #endif
291 }
292 }
293 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
294 "Bug in native code: jfieldID offset must address interior of object");
295 }
296
297 // Pick a reasonable higher bound for local capacity requested
298 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
299 // high because a test (or very unusual application) may try to allocate
300 // that many handles and run out of swap space. An implementation is
301 // permitted to allocate more handles than the ensured capacity, so this
302 // value is set high enough to prevent compatibility problems.
303 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
304
305
306 // Wrapper to trace JNI functions
307
308 #ifdef ASSERT
309 Histogram* JNIHistogram;
310 static volatile jint JNIHistogram_lock = 0;
311
312 class JNITraceWrapper : public StackObj {
313 public:
314 JNITraceWrapper(const char* format, ...) {
315 if (TraceJNICalls) {
316 va_list ap;
317 va_start(ap, format);
318 tty->print("JNI ");
319 tty->vprint_cr(format, ap);
320 va_end(ap);
321 }
322 }
323 };
324
325 class JNIHistogramElement : public HistogramElement {
326 public:
327 JNIHistogramElement(const char* name);
328 };
329
330 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
331 _name = elementName;
332 uintx count = 0;
333
334 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
335 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
336 count +=1;
337 if ( (WarnOnStalledSpinLock > 0)
338 && (count % WarnOnStalledSpinLock == 0)) {
339 warning("JNIHistogram_lock seems to be stalled");
340 }
341 }
342 }
343
344
345 if(JNIHistogram == NULL)
346 JNIHistogram = new Histogram("JNI Call Counts",100);
347
348 JNIHistogram->add_element(this);
349 Atomic::dec(&JNIHistogram_lock);
350 }
351
352 #define JNICountWrapper(arg) \
353 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
354 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
355 if (e != NULL) e->increment_count()
356 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
357 #else
358 #define JNIWrapper(arg)
359 #endif
360
361
362 // Implementation of JNI entries
363
364 #ifndef USDT2
365 DT_RETURN_MARK_DECL(DefineClass, jclass);
366 #else /* USDT2 */
367 DT_RETURN_MARK_DECL(DefineClass, jclass
368 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
369 #endif /* USDT2 */
370
371 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
372 const jbyte *buf, jsize bufLen))
373 JNIWrapper("DefineClass");
374
375 #ifndef USDT2
376 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
377 env, name, loaderRef, buf, bufLen);
378 #else /* USDT2 */
379 HOTSPOT_JNI_DEFINECLASS_ENTRY(
380 env, (char*) name, loaderRef, (char*) buf, bufLen);
381 #endif /* USDT2 */
382 jclass cls = NULL;
383 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
384
385 TempNewSymbol class_name = NULL;
386 // Since exceptions can be thrown, class initialization can take place
387 // if name is NULL no check for class name in .class stream has to be made.
388 if (name != NULL) {
389 const int str_len = (int)strlen(name);
390 if (str_len > Symbol::max_length()) {
391 // It's impossible to create this class; the name cannot fit
392 // into the constant pool.
393 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
394 }
395 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
396 }
397 ResourceMark rm(THREAD);
398 ClassFileStream st((u1*) buf, bufLen, NULL);
399 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
400
401 if (UsePerfData && !class_loader.is_null()) {
402 // check whether the current caller thread holds the lock or not.
403 // If not, increment the corresponding counter
404 if (ObjectSynchronizer::
405 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
406 ObjectSynchronizer::owner_self) {
407 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
408 }
409 }
410 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
411 Handle(), &st, true,
412 CHECK_NULL);
413
414 if (TraceClassResolution && k != NULL) {
415 trace_class_resolution(k);
416 }
417
418 cls = (jclass)JNIHandles::make_local(
419 env, k->java_mirror());
420 return cls;
421 JNI_END
422
423
424
425 static bool first_time_FindClass = true;
426
427 #ifndef USDT2
428 DT_RETURN_MARK_DECL(FindClass, jclass);
429 #else /* USDT2 */
430 DT_RETURN_MARK_DECL(FindClass, jclass
431 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
432 #endif /* USDT2 */
433
434 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
435 JNIWrapper("FindClass");
436 #ifndef USDT2
437 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
438 #else /* USDT2 */
439 HOTSPOT_JNI_FINDCLASS_ENTRY(
440 env, (char *)name);
441 #endif /* USDT2 */
442
443 jclass result = NULL;
444 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
445
446 // Remember if we are the first invocation of jni_FindClass
447 bool first_time = first_time_FindClass;
448 first_time_FindClass = false;
449
450 // Sanity check the name: it cannot be null or larger than the maximum size
451 // name we can fit in the constant pool.
452 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
453 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
454 }
455
456 //%note jni_3
457 Handle loader;
458 Handle protection_domain;
459 // Find calling class
460 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
461 if (k.not_null()) {
462 loader = Handle(THREAD, k->class_loader());
463 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
464 // in the correct class context.
465 if (loader.is_null() &&
466 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
467 JavaValue result(T_OBJECT);
468 JavaCalls::call_static(&result, k,
469 vmSymbols::getFromClass_name(),
470 vmSymbols::void_class_signature(),
471 thread);
472 if (HAS_PENDING_EXCEPTION) {
473 Handle ex(thread, thread->pending_exception());
474 CLEAR_PENDING_EXCEPTION;
475 THROW_HANDLE_0(ex);
476 }
477 oop mirror = (oop) result.get_jobject();
478 loader = Handle(THREAD,
479 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
480 protection_domain = Handle(THREAD,
481 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
482 }
483 } else {
484 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
485 loader = Handle(THREAD, SystemDictionary::java_system_loader());
486 }
487
488 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
489 result = find_class_from_class_loader(env, sym, true, loader,
490 protection_domain, true, thread);
491
492 if (TraceClassResolution && result != NULL) {
493 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
494 }
495
496 // If we were the first invocation of jni_FindClass, we enable compilation again
497 // rather than just allowing invocation counter to overflow and decay.
498 // Controlled by flag DelayCompilationDuringStartup.
499 if (first_time && !CompileTheWorld)
500 CompilationPolicy::completed_vm_startup();
501
502 return result;
503 JNI_END
504
505 #ifndef USDT2
506 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
507 #else /* USDT2 */
508 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
509 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
510 #endif /* USDT2 */
511
512 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
513 JNIWrapper("FromReflectedMethod");
514 #ifndef USDT2
515 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
516 #else /* USDT2 */
517 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
518 env, method);
519 #endif /* USDT2 */
520 jmethodID ret = NULL;
521 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
522
523 // method is a handle to a java.lang.reflect.Method object
524 oop reflected = JNIHandles::resolve_non_null(method);
525 oop mirror = NULL;
526 int slot = 0;
527
528 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
529 mirror = java_lang_reflect_Constructor::clazz(reflected);
530 slot = java_lang_reflect_Constructor::slot(reflected);
531 } else {
532 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
533 mirror = java_lang_reflect_Method::clazz(reflected);
534 slot = java_lang_reflect_Method::slot(reflected);
535 }
536 Klass* k = java_lang_Class::as_Klass(mirror);
537
538 KlassHandle k1(THREAD, k);
539 // Make sure class is initialized before handing id's out to methods
540 k1()->initialize(CHECK_NULL);
541 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
542 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
543 return ret;
544 JNI_END
545
546 #ifndef USDT2
547 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
548 #else /* USDT2 */
549 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
550 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
551 #endif /* USDT2 */
552
553 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
554 JNIWrapper("FromReflectedField");
555 #ifndef USDT2
556 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
557 #else /* USDT2 */
558 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
559 env, field);
560 #endif /* USDT2 */
561 jfieldID ret = NULL;
562 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
563
564 // field is a handle to a java.lang.reflect.Field object
565 oop reflected = JNIHandles::resolve_non_null(field);
566 oop mirror = java_lang_reflect_Field::clazz(reflected);
567 Klass* k = java_lang_Class::as_Klass(mirror);
568 int slot = java_lang_reflect_Field::slot(reflected);
569 int modifiers = java_lang_reflect_Field::modifiers(reflected);
570
571 KlassHandle k1(THREAD, k);
572 // Make sure class is initialized before handing id's out to fields
573 k1()->initialize(CHECK_NULL);
574
575 // First check if this is a static field
576 if (modifiers & JVM_ACC_STATIC) {
577 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
578 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
579 assert(id != NULL, "corrupt Field object");
580 debug_only(id->set_is_static_field_id();)
581 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
582 ret = jfieldIDWorkaround::to_static_jfieldID(id);
583 return ret;
584 }
585
586 // The slot is the index of the field description in the field-array
587 // The jfieldID is the offset of the field within the object
588 // It may also have hash bits for k, if VerifyJNIFields is turned on.
589 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
590 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
591 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
592 return ret;
593 JNI_END
594
595 #ifndef USDT2
596 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
597 #else /* USDT2 */
598 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
599 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
600 #endif /* USDT2 */
601
602 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
603 JNIWrapper("ToReflectedMethod");
604 #ifndef USDT2
605 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
606 #else /* USDT2 */
607 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
608 env, cls, (uintptr_t) method_id, isStatic);
609 #endif /* USDT2 */
610 jobject ret = NULL;
611 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
612
613 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
614 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
615 oop reflection_method;
616 if (m->is_initializer()) {
617 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
618 } else {
619 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
620 }
621 ret = JNIHandles::make_local(env, reflection_method);
622 return ret;
623 JNI_END
624
625 #ifndef USDT2
626 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
627 #else /* USDT2 */
628 DT_RETURN_MARK_DECL(GetSuperclass, jclass
629 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
630 #endif /* USDT2 */
631
632 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
633 JNIWrapper("GetSuperclass");
634 #ifndef USDT2
635 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
636 #else /* USDT2 */
637 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
638 env, sub);
639 #endif /* USDT2 */
640 jclass obj = NULL;
641 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
642
643 oop mirror = JNIHandles::resolve_non_null(sub);
644 // primitive classes return NULL
645 if (java_lang_Class::is_primitive(mirror)) return NULL;
646
647 // Rules of Class.getSuperClass as implemented by KLass::java_super:
648 // arrays return Object
649 // interfaces return NULL
650 // proper classes return Klass::super()
651 Klass* k = java_lang_Class::as_Klass(mirror);
652 if (k->is_interface()) return NULL;
653
654 // return mirror for superclass
655 Klass* super = k->java_super();
656 // super2 is the value computed by the compiler's getSuperClass intrinsic:
657 debug_only(Klass* super2 = ( k->oop_is_array()
658 ? SystemDictionary::Object_klass()
659 : k->super() ) );
660 assert(super == super2,
661 "java_super computation depends on interface, array, other super");
662 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
663 return obj;
664 JNI_END
665
666 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
667 JNIWrapper("IsSubclassOf");
668 #ifndef USDT2
669 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
670 #else /* USDT2 */
671 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
672 env, sub, super);
673 #endif /* USDT2 */
674 oop sub_mirror = JNIHandles::resolve_non_null(sub);
675 oop super_mirror = JNIHandles::resolve_non_null(super);
676 if (java_lang_Class::is_primitive(sub_mirror) ||
677 java_lang_Class::is_primitive(super_mirror)) {
678 jboolean ret = (sub_mirror == super_mirror);
679 #ifndef USDT2
680 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
681 #else /* USDT2 */
682 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
683 ret);
684 #endif /* USDT2 */
685 return ret;
686 }
687 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
688 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
689 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
690 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
691 JNI_TRUE : JNI_FALSE;
692 #ifndef USDT2
693 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
694 #else /* USDT2 */
695 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
696 ret);
697 #endif /* USDT2 */
698 return ret;
699 JNI_END
700
701 #ifndef USDT2
702 DT_RETURN_MARK_DECL(Throw, jint);
703 #else /* USDT2 */
704 DT_RETURN_MARK_DECL(Throw, jint
705 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
706 #endif /* USDT2 */
707
708 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
709 JNIWrapper("Throw");
710 #ifndef USDT2
711 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
712 #else /* USDT2 */
713 HOTSPOT_JNI_THROW_ENTRY(
714 env, obj);
715 #endif /* USDT2 */
716 jint ret = JNI_OK;
717 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
718
719 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
720 ShouldNotReachHere();
721 JNI_END
722
723 #ifndef USDT2
724 DT_RETURN_MARK_DECL(ThrowNew, jint);
725 #else /* USDT2 */
726 DT_RETURN_MARK_DECL(ThrowNew, jint
727 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
728 #endif /* USDT2 */
729
730 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
731 JNIWrapper("ThrowNew");
732 #ifndef USDT2
733 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
734 #else /* USDT2 */
735 HOTSPOT_JNI_THROWNEW_ENTRY(
736 env, clazz, (char *) message);
737 #endif /* USDT2 */
738 jint ret = JNI_OK;
739 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
740
741 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
742 Symbol* name = k->name();
743 Handle class_loader (THREAD, k->class_loader());
744 Handle protection_domain (THREAD, k->protection_domain());
745 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
746 ShouldNotReachHere();
747 JNI_END
748
749
750 // JNI functions only transform a pending async exception to a synchronous
751 // exception in ExceptionOccurred and ExceptionCheck calls, since
752 // delivering an async exception in other places won't change the native
753 // code's control flow and would be harmful when native code further calls
754 // JNI functions with a pending exception. Async exception is also checked
755 // during the call, so ExceptionOccurred/ExceptionCheck won't return
756 // false but deliver the async exception at the very end during
757 // state transition.
758
759 static void jni_check_async_exceptions(JavaThread *thread) {
760 assert(thread == Thread::current(), "must be itself");
761 thread->check_and_handle_async_exceptions();
762 }
763
764 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
765 JNIWrapper("ExceptionOccurred");
766 #ifndef USDT2
767 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
768 #else /* USDT2 */
769 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
770 env);
771 #endif /* USDT2 */
772 jni_check_async_exceptions(thread);
773 oop exception = thread->pending_exception();
774 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
775 #ifndef USDT2
776 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
777 #else /* USDT2 */
778 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
779 ret);
780 #endif /* USDT2 */
781 return ret;
782 JNI_END
783
784
785 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
786 JNIWrapper("ExceptionDescribe");
787 #ifndef USDT2
788 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
789 #else /* USDT2 */
790 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
791 env);
792 #endif /* USDT2 */
793 if (thread->has_pending_exception()) {
794 Handle ex(thread, thread->pending_exception());
795 thread->clear_pending_exception();
796 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
797 // Don't print anything if we are being killed.
798 } else {
799 jio_fprintf(defaultStream::error_stream(), "Exception ");
800 if (thread != NULL && thread->threadObj() != NULL) {
801 ResourceMark rm(THREAD);
802 jio_fprintf(defaultStream::error_stream(),
803 "in thread \"%s\" ", thread->get_thread_name());
804 }
805 if (ex->is_a(SystemDictionary::Throwable_klass())) {
806 JavaValue result(T_VOID);
807 JavaCalls::call_virtual(&result,
808 ex,
809 KlassHandle(THREAD,
810 SystemDictionary::Throwable_klass()),
811 vmSymbols::printStackTrace_name(),
812 vmSymbols::void_method_signature(),
813 THREAD);
814 // If an exception is thrown in the call it gets thrown away. Not much
815 // we can do with it. The native code that calls this, does not check
816 // for the exception - hence, it might still be in the thread when DestroyVM gets
817 // called, potentially causing a few asserts to trigger - since no pending exception
818 // is expected.
819 CLEAR_PENDING_EXCEPTION;
820 } else {
821 ResourceMark rm(THREAD);
822 jio_fprintf(defaultStream::error_stream(),
823 ". Uncaught exception of type %s.",
824 ex->klass()->external_name());
825 }
826 }
827 }
828 #ifndef USDT2
829 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
830 #else /* USDT2 */
831 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
832 );
833 #endif /* USDT2 */
834 JNI_END
835
836
837 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
838 JNIWrapper("ExceptionClear");
839 #ifndef USDT2
840 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
841 #else /* USDT2 */
842 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
843 env);
844 #endif /* USDT2 */
845
846 // The jni code might be using this API to clear java thrown exception.
847 // So just mark jvmti thread exception state as exception caught.
848 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
849 if (state != NULL && state->is_exception_detected()) {
850 state->set_exception_caught();
851 }
852 thread->clear_pending_exception();
853 #ifndef USDT2
854 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
855 #else /* USDT2 */
856 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
857 );
858 #endif /* USDT2 */
859 JNI_END
860
861
862 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
863 JNIWrapper("FatalError");
864 #ifndef USDT2
865 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
866 #else /* USDT2 */
867 HOTSPOT_JNI_FATALERROR_ENTRY(
868 env, (char *) msg);
869 #endif /* USDT2 */
870 tty->print_cr("FATAL ERROR in native method: %s", msg);
871 thread->print_stack();
872 os::abort(); // Dump core and abort
873 JNI_END
874
875
876 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
877 JNIWrapper("PushLocalFrame");
878 #ifndef USDT2
879 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
880 #else /* USDT2 */
881 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
882 env, capacity);
883 #endif /* USDT2 */
884 //%note jni_11
885 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
886 #ifndef USDT2
887 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
888 #else /* USDT2 */
889 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
890 (uint32_t)JNI_ERR);
891 #endif /* USDT2 */
892 return JNI_ERR;
893 }
894 JNIHandleBlock* old_handles = thread->active_handles();
895 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
896 assert(new_handles != NULL, "should not be NULL");
897 new_handles->set_pop_frame_link(old_handles);
898 thread->set_active_handles(new_handles);
899 jint ret = JNI_OK;
900 #ifndef USDT2
901 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
902 #else /* USDT2 */
903 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
904 ret);
905 #endif /* USDT2 */
906 return ret;
907 JNI_END
908
909
910 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
911 JNIWrapper("PopLocalFrame");
912 #ifndef USDT2
913 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
914 #else /* USDT2 */
915 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
916 env, result);
917 #endif /* USDT2 */
918 //%note jni_11
919 Handle result_handle(thread, JNIHandles::resolve(result));
920 JNIHandleBlock* old_handles = thread->active_handles();
921 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
922 if (new_handles != NULL) {
923 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
924 // This way code will still work if PopLocalFrame is called without a corresponding
925 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
926 // the release_block call will release the blocks.
927 thread->set_active_handles(new_handles);
928 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
929 JNIHandleBlock::release_block(old_handles, thread); // may block
930 result = JNIHandles::make_local(thread, result_handle());
931 }
932 #ifndef USDT2
933 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
934 #else /* USDT2 */
935 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
936 result);
937 #endif /* USDT2 */
938 return result;
939 JNI_END
940
941
942 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
943 JNIWrapper("NewGlobalRef");
944 #ifndef USDT2
945 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
946 #else /* USDT2 */
947 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
948 env, ref);
949 #endif /* USDT2 */
950 Handle ref_handle(thread, JNIHandles::resolve(ref));
951 jobject ret = JNIHandles::make_global(ref_handle);
952 #ifndef USDT2
953 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
954 #else /* USDT2 */
955 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
956 ret);
957 #endif /* USDT2 */
958 return ret;
959 JNI_END
960
961 // Must be JNI_ENTRY (with HandleMark)
962 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
963 JNIWrapper("DeleteGlobalRef");
964 #ifndef USDT2
965 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
966 #else /* USDT2 */
967 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
968 env, ref);
969 #endif /* USDT2 */
970 JNIHandles::destroy_global(ref);
971 #ifndef USDT2
972 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
973 #else /* USDT2 */
974 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
975 );
976 #endif /* USDT2 */
977 JNI_END
978
979 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
980 JNIWrapper("DeleteLocalRef");
981 #ifndef USDT2
982 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
983 #else /* USDT2 */
984 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
985 env, obj);
986 #endif /* USDT2 */
987 JNIHandles::destroy_local(obj);
988 #ifndef USDT2
989 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
990 #else /* USDT2 */
991 HOTSPOT_JNI_DELETELOCALREF_RETURN(
992 );
993 #endif /* USDT2 */
994 JNI_END
995
996 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
997 JNIWrapper("IsSameObject");
998 #ifndef USDT2
999 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
1000 #else /* USDT2 */
1001 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
1002 env, r1, r2);
1003 #endif /* USDT2 */
1004 oop a = JNIHandles::resolve(r1);
1005 oop b = JNIHandles::resolve(r2);
1006 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1007 #ifndef USDT2
1008 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1009 #else /* USDT2 */
1010 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1011 ret);
1012 #endif /* USDT2 */
1013 return ret;
1014 JNI_END
1015
1016
1017 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1018 JNIWrapper("NewLocalRef");
1019 #ifndef USDT2
1020 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1021 #else /* USDT2 */
1022 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1023 env, ref);
1024 #endif /* USDT2 */
1025 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1026 #ifndef USDT2
1027 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1028 #else /* USDT2 */
1029 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1030 ret);
1031 #endif /* USDT2 */
1032 return ret;
1033 JNI_END
1034
1035 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1036 JNIWrapper("EnsureLocalCapacity");
1037 #ifndef USDT2
1038 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1039 #else /* USDT2 */
1040 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1041 env, capacity);
1042 #endif /* USDT2 */
1043 jint ret;
1044 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1045 ret = JNI_OK;
1046 } else {
1047 ret = JNI_ERR;
1048 }
1049 #ifndef USDT2
1050 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1051 #else /* USDT2 */
1052 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1053 ret);
1054 #endif /* USDT2 */
1055 return ret;
1056 JNI_END
1057
1058 // Return the Handle Type
1059 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1060 JNIWrapper("GetObjectRefType");
1061 #ifndef USDT2
1062 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1063 #else /* USDT2 */
1064 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1065 env, obj);
1066 #endif /* USDT2 */
1067 jobjectRefType ret;
1068 if (JNIHandles::is_local_handle(thread, obj) ||
1069 JNIHandles::is_frame_handle(thread, obj))
1070 ret = JNILocalRefType;
1071 else if (JNIHandles::is_global_handle(obj))
1072 ret = JNIGlobalRefType;
1073 else if (JNIHandles::is_weak_global_handle(obj))
1074 ret = JNIWeakGlobalRefType;
1075 else
1076 ret = JNIInvalidRefType;
1077 #ifndef USDT2
1078 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1079 #else /* USDT2 */
1080 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1081 (void *) ret);
1082 #endif /* USDT2 */
1083 return ret;
1084 JNI_END
1085
1086
1087 class JNI_ArgumentPusher : public SignatureIterator {
1088 protected:
1089 JavaCallArguments* _arguments;
1090
1091 virtual void get_bool () = 0;
1092 virtual void get_char () = 0;
1093 virtual void get_short () = 0;
1094 virtual void get_byte () = 0;
1095 virtual void get_int () = 0;
1096 virtual void get_long () = 0;
1097 virtual void get_float () = 0;
1098 virtual void get_double () = 0;
1099 virtual void get_object () = 0;
1100
1101 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1102 this->_return_type = T_ILLEGAL;
1103 _arguments = NULL;
1104 }
1105
1106 public:
1107 virtual void iterate( uint64_t fingerprint ) = 0;
1108
1109 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1110
1111 inline void do_bool() { if (!is_return_type()) get_bool(); }
1112 inline void do_char() { if (!is_return_type()) get_char(); }
1113 inline void do_short() { if (!is_return_type()) get_short(); }
1114 inline void do_byte() { if (!is_return_type()) get_byte(); }
1115 inline void do_int() { if (!is_return_type()) get_int(); }
1116 inline void do_long() { if (!is_return_type()) get_long(); }
1117 inline void do_float() { if (!is_return_type()) get_float(); }
1118 inline void do_double() { if (!is_return_type()) get_double(); }
1119 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1120 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1121 inline void do_void() { }
1122
1123 JavaCallArguments* arguments() { return _arguments; }
1124 void push_receiver(Handle h) { _arguments->push_oop(h); }
1125 };
1126
1127
1128 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1129 protected:
1130 va_list _ap;
1131
1132 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1133 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1134 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1135 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1136 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1137
1138 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1139
1140 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1141 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1142 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1143 inline void get_object() { jobject l = va_arg(_ap, jobject);
1144 _arguments->push_oop(Handle((oop *)l, false)); }
1145
1146 inline void set_ap(va_list rap) {
1147 #ifdef va_copy
1148 va_copy(_ap, rap);
1149 #elif defined (__va_copy)
1150 __va_copy(_ap, rap);
1151 #else
1152 _ap = rap;
1153 #endif
1154 }
1155
1156 public:
1157 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1158 : JNI_ArgumentPusher(signature) {
1159 set_ap(rap);
1160 }
1161 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1162 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1163 set_ap(rap);
1164 }
1165
1166 // Optimized path if we have the bitvector form of signature
1167 void iterate( uint64_t fingerprint ) {
1168 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1169 else {
1170 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1171 result_feature_mask);
1172
1173 assert(fingerprint, "Fingerprint should not be 0");
1174 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1175 while ( 1 ) {
1176 switch ( fingerprint & parameter_feature_mask ) {
1177 case bool_parm:
1178 case char_parm:
1179 case short_parm:
1180 case byte_parm:
1181 case int_parm:
1182 get_int();
1183 break;
1184 case obj_parm:
1185 get_object();
1186 break;
1187 case long_parm:
1188 get_long();
1189 break;
1190 case float_parm:
1191 get_float();
1192 break;
1193 case double_parm:
1194 get_double();
1195 break;
1196 case done_parm:
1197 return;
1198 break;
1199 default:
1200 ShouldNotReachHere();
1201 break;
1202 }
1203 fingerprint >>= parameter_feature_size;
1204 }
1205 }
1206 }
1207 };
1208
1209
1210 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1211 protected:
1212 const jvalue *_ap;
1213
1214 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1215 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1216 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1217 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1218 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1219
1220 inline void get_long() { _arguments->push_long((_ap++)->j); }
1221 inline void get_float() { _arguments->push_float((_ap++)->f); }
1222 inline void get_double() { _arguments->push_double((_ap++)->d);}
1223 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1224
1225 inline void set_ap(const jvalue *rap) { _ap = rap; }
1226
1227 public:
1228 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1229 : JNI_ArgumentPusher(signature) {
1230 set_ap(rap);
1231 }
1232 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1233 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1234 set_ap(rap);
1235 }
1236
1237 // Optimized path if we have the bitvector form of signature
1238 void iterate( uint64_t fingerprint ) {
1239 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1240 else {
1241 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1242 result_feature_mask);
1243 assert(fingerprint, "Fingerprint should not be 0");
1244 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1245 while ( 1 ) {
1246 switch ( fingerprint & parameter_feature_mask ) {
1247 case bool_parm:
1248 get_bool();
1249 break;
1250 case char_parm:
1251 get_char();
1252 break;
1253 case short_parm:
1254 get_short();
1255 break;
1256 case byte_parm:
1257 get_byte();
1258 break;
1259 case int_parm:
1260 get_int();
1261 break;
1262 case obj_parm:
1263 get_object();
1264 break;
1265 case long_parm:
1266 get_long();
1267 break;
1268 case float_parm:
1269 get_float();
1270 break;
1271 case double_parm:
1272 get_double();
1273 break;
1274 case done_parm:
1275 return;
1276 break;
1277 default:
1278 ShouldNotReachHere();
1279 break;
1280 }
1281 fingerprint >>= parameter_feature_size;
1282 }
1283 }
1284 }
1285 };
1286
1287
1288 enum JNICallType {
1289 JNI_STATIC,
1290 JNI_VIRTUAL,
1291 JNI_NONVIRTUAL
1292 };
1293
1294 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
1295 assert(!method.is_null() , "method should not be null");
1296
1297 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1298 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1299 KlassHandle spec_klass (THREAD, method->method_holder());
1300 Symbol* name = method->name();
1301 Symbol* signature = method->signature();
1302 CallInfo info;
1303 LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1304 return info.selected_method();
1305 }
1306
1307 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
1308 assert(!method.is_null() , "method should not be null");
1309
1310 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1311 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1312 KlassHandle spec_klass (THREAD, method->method_holder());
1313 Symbol* name = method->name();
1314 Symbol* signature = method->signature();
1315 CallInfo info;
1316 LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1317 return info.selected_method();
1318 }
1319
1320
1321
1322 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1323 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1324
1325 // Create object to hold arguments for the JavaCall, and associate it with
1326 // the jni parser
1327 ResourceMark rm(THREAD);
1328 int number_of_parameters = method->size_of_parameters();
1329 JavaCallArguments java_args(number_of_parameters);
1330 args->set_java_argument_object(&java_args);
1331
1332 assert(method->is_static(), "method should be static");
1333
1334 // Fill out JavaCallArguments object
1335 args->iterate( Fingerprinter(method).fingerprint() );
1336 // Initialize result type
1337 result->set_type(args->get_ret_type());
1338
1339 // Invoke the method. Result is returned as oop.
1340 JavaCalls::call(result, method, &java_args, CHECK);
1341
1342 // Convert result
1343 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1344 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1345 }
1346 }
1347
1348
1349 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1350 oop recv = JNIHandles::resolve(receiver);
1351 if (recv == NULL) {
1352 THROW(vmSymbols::java_lang_NullPointerException());
1353 }
1354 Handle h_recv(THREAD, recv);
1355
1356 int number_of_parameters;
1357 Method* selected_method;
1358 {
1359 Method* m = Method::resolve_jmethod_id(method_id);
1360 number_of_parameters = m->size_of_parameters();
1361 Klass* holder = m->method_holder();
1362 if (!(holder)->is_interface()) {
1363 // non-interface call -- for that little speed boost, don't handlize
1364 debug_only(No_Safepoint_Verifier nosafepoint;)
1365 if (call_type == JNI_VIRTUAL) {
1366 // jni_GetMethodID makes sure class is linked and initialized
1367 // so m should have a valid vtable index.
1368 int vtbl_index = m->vtable_index();
1369 if (vtbl_index != Method::nonvirtual_vtable_index) {
1370 Klass* k = h_recv->klass();
1371 // k might be an arrayKlassOop but all vtables start at
1372 // the same place. The cast is to avoid virtual call and assertion.
1373 InstanceKlass *ik = (InstanceKlass*)k;
1374 selected_method = ik->method_at_vtable(vtbl_index);
1375 } else {
1376 // final method
1377 selected_method = m;
1378 }
1379 } else {
1380 // JNI_NONVIRTUAL call
1381 selected_method = m;
1382 }
1383 } else {
1384 // interface call
1385 KlassHandle h_holder(THREAD, holder);
1386
1387 int itbl_index = m->cached_itable_index();
1388 if (itbl_index == -1) {
1389 itbl_index = klassItable::compute_itable_index(m);
1390 m->set_cached_itable_index(itbl_index);
1391 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1392 }
1393 Klass* k = h_recv->klass();
1394 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1395 }
1396 }
1397
1398 methodHandle method(THREAD, selected_method);
1399
1400 // Create object to hold arguments for the JavaCall, and associate it with
1401 // the jni parser
1402 ResourceMark rm(THREAD);
1403 JavaCallArguments java_args(number_of_parameters);
1404 args->set_java_argument_object(&java_args);
1405
1406 // handle arguments
1407 assert(!method->is_static(), "method should not be static");
1408 args->push_receiver(h_recv); // Push jobject handle
1409
1410 // Fill out JavaCallArguments object
1411 args->iterate( Fingerprinter(method).fingerprint() );
1412 // Initialize result type
1413 result->set_type(args->get_ret_type());
1414
1415 // Invoke the method. Result is returned as oop.
1416 JavaCalls::call(result, method, &java_args, CHECK);
1417
1418 // Convert result
1419 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1420 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1421 }
1422 }
1423
1424
1425 static instanceOop alloc_object(jclass clazz, TRAPS) {
1426 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1427 k()->check_valid_for_instantiation(false, CHECK_NULL);
1428 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1429 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1430 return ih;
1431 }
1432
1433 #ifndef USDT2
1434 DT_RETURN_MARK_DECL(AllocObject, jobject);
1435 #else /* USDT2 */
1436 DT_RETURN_MARK_DECL(AllocObject, jobject
1437 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1438 #endif /* USDT2 */
1439
1440 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1441 JNIWrapper("AllocObject");
1442
1443 #ifndef USDT2
1444 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1445 #else /* USDT2 */
1446 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1447 env, clazz);
1448 #endif /* USDT2 */
1449 jobject ret = NULL;
1450 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1451
1452 instanceOop i = alloc_object(clazz, CHECK_NULL);
1453 ret = JNIHandles::make_local(env, i);
1454 return ret;
1455 JNI_END
1456
1457 #ifndef USDT2
1458 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1459 #else /* USDT2 */
1460 DT_RETURN_MARK_DECL(NewObjectA, jobject
1461 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1462 #endif /* USDT2 */
1463
1464 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1465 JNIWrapper("NewObjectA");
1466 #ifndef USDT2
1467 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1468 #else /* USDT2 */
1469 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1470 env, clazz, (uintptr_t) methodID);
1471 #endif /* USDT2 */
1472 jobject obj = NULL;
1473 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1474
1475 instanceOop i = alloc_object(clazz, CHECK_NULL);
1476 obj = JNIHandles::make_local(env, i);
1477 JavaValue jvalue(T_VOID);
1478 JNI_ArgumentPusherArray ap(methodID, args);
1479 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1480 return obj;
1481 JNI_END
1482
1483 #ifndef USDT2
1484 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1485 #else /* USDT2 */
1486 DT_RETURN_MARK_DECL(NewObjectV, jobject
1487 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1488 #endif /* USDT2 */
1489
1490 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1491 JNIWrapper("NewObjectV");
1492 #ifndef USDT2
1493 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1494 #else /* USDT2 */
1495 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1496 env, clazz, (uintptr_t) methodID);
1497 #endif /* USDT2 */
1498 jobject obj = NULL;
1499 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1500
1501 instanceOop i = alloc_object(clazz, CHECK_NULL);
1502 obj = JNIHandles::make_local(env, i);
1503 JavaValue jvalue(T_VOID);
1504 JNI_ArgumentPusherVaArg ap(methodID, args);
1505 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1506 return obj;
1507 JNI_END
1508
1509 #ifndef USDT2
1510 DT_RETURN_MARK_DECL(NewObject, jobject);
1511 #else /* USDT2 */
1512 DT_RETURN_MARK_DECL(NewObject, jobject
1513 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1514 #endif /* USDT2 */
1515
1516 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1517 JNIWrapper("NewObject");
1518 #ifndef USDT2
1519 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1520 #else /* USDT2 */
1521 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1522 env, clazz, (uintptr_t) methodID);
1523 #endif /* USDT2 */
1524 jobject obj = NULL;
1525 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1526
1527 instanceOop i = alloc_object(clazz, CHECK_NULL);
1528 obj = JNIHandles::make_local(env, i);
1529 va_list args;
1530 va_start(args, methodID);
1531 JavaValue jvalue(T_VOID);
1532 JNI_ArgumentPusherVaArg ap(methodID, args);
1533 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1534 va_end(args);
1535 return obj;
1536 JNI_END
1537
1538
1539 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1540 JNIWrapper("GetObjectClass");
1541 #ifndef USDT2
1542 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1543 #else /* USDT2 */
1544 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1545 env, obj);
1546 #endif /* USDT2 */
1547 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1548 jclass ret =
1549 (jclass) JNIHandles::make_local(env, k->java_mirror());
1550 #ifndef USDT2
1551 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1552 #else /* USDT2 */
1553 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1554 ret);
1555 #endif /* USDT2 */
1556 return ret;
1557 JNI_END
1558
1559 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1560 JNIWrapper("IsInstanceOf");
1561 #ifndef USDT2
1562 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1563 #else /* USDT2 */
1564 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1565 env, obj, clazz);
1566 #endif /* USDT2 */
1567 jboolean ret = JNI_TRUE;
1568 if (obj != NULL) {
1569 ret = JNI_FALSE;
1570 Klass* k = java_lang_Class::as_Klass(
1571 JNIHandles::resolve_non_null(clazz));
1572 if (k != NULL) {
1573 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1574 }
1575 }
1576 #ifndef USDT2
1577 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1578 #else /* USDT2 */
1579 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1580 ret);
1581 #endif /* USDT2 */
1582 return ret;
1583 JNI_END
1584
1585
1586 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1587 const char *sig, bool is_static, TRAPS) {
1588 // %%%% This code should probably just call into a method in the LinkResolver
1589 //
1590 // The class should have been loaded (we have an instance of the class
1591 // passed in) so the method and signature should already be in the symbol
1592 // table. If they're not there, the method doesn't exist.
1593 const char *name_to_probe = (name_str == NULL)
1594 ? vmSymbols::object_initializer_name()->as_C_string()
1595 : name_str;
1596 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1597 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1598
1599 if (name == NULL || signature == NULL) {
1600 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1601 }
1602
1603 // Throw a NoSuchMethodError exception if we have an instance of a
1604 // primitive java.lang.Class
1605 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1606 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1607 }
1608
1609 KlassHandle klass(THREAD,
1610 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1611
1612 // Make sure class is linked and initialized before handing id's out to
1613 // Method*s.
1614 klass()->initialize(CHECK_NULL);
1615
1616 Method* m;
1617 if (name == vmSymbols::object_initializer_name() ||
1618 name == vmSymbols::class_initializer_name()) {
1619 // Never search superclasses for constructors
1620 if (klass->oop_is_instance()) {
1621 m = InstanceKlass::cast(klass())->find_method(name, signature);
1622 } else {
1623 m = NULL;
1624 }
1625 } else {
1626 m = klass->lookup_method(name, signature);
1627 // Look up interfaces
1628 if (m == NULL && klass->oop_is_instance()) {
1629 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1630 signature);
1631 }
1632 }
1633 if (m == NULL || (m->is_static() != is_static)) {
1634 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1635 }
1636 return m->jmethod_id();
1637 }
1638
1639
1640 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1641 const char *name, const char *sig))
1642 JNIWrapper("GetMethodID");
1643 #ifndef USDT2
1644 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1645 #else /* USDT2 */
1646 HOTSPOT_JNI_GETMETHODID_ENTRY(
1647 env, clazz, (char *) name, (char *) sig);
1648 #endif /* USDT2 */
1649 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1650 #ifndef USDT2
1651 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1652 #else /* USDT2 */
1653 HOTSPOT_JNI_GETMETHODID_RETURN(
1654 (uintptr_t) ret);
1655 #endif /* USDT2 */
1656 return ret;
1657 JNI_END
1658
1659
1660 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1661 const char *name, const char *sig))
1662 JNIWrapper("GetStaticMethodID");
1663 #ifndef USDT2
1664 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1665 #else /* USDT2 */
1666 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1667 env, (char *) clazz, (char *) name, (char *)sig);
1668 #endif /* USDT2 */
1669 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1670 #ifndef USDT2
1671 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1672 #else /* USDT2 */
1673 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1674 (uintptr_t) ret);
1675 #endif /* USDT2 */
1676 return ret;
1677 JNI_END
1678
1679
1680
1681 //
1682 // Calling Methods
1683 //
1684
1685 #ifndef USDT2
1686 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1687 \
1688 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1689 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1690 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1691 \
1692 JNI_ENTRY(ResultType, \
1693 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1694 JNIWrapper("Call" XSTR(Result) "Method"); \
1695 \
1696 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1697 ResultType ret = 0;\
1698 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1699 (const ResultType&)ret);\
1700 \
1701 va_list args; \
1702 va_start(args, methodID); \
1703 JavaValue jvalue(Tag); \
1704 JNI_ArgumentPusherVaArg ap(methodID, args); \
1705 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1706 va_end(args); \
1707 ret = jvalue.get_##ResultType(); \
1708 return ret;\
1709 JNI_END \
1710 \
1711 \
1712 JNI_ENTRY(ResultType, \
1713 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1714 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1715 \
1716 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1717 ResultType ret = 0;\
1718 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1719 (const ResultType&)ret);\
1720 \
1721 JavaValue jvalue(Tag); \
1722 JNI_ArgumentPusherVaArg ap(methodID, args); \
1723 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1724 ret = jvalue.get_##ResultType(); \
1725 return ret;\
1726 JNI_END \
1727 \
1728 \
1729 JNI_ENTRY(ResultType, \
1730 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1731 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1732 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1733 ResultType ret = 0;\
1734 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1735 (const ResultType&)ret);\
1736 \
1737 JavaValue jvalue(Tag); \
1738 JNI_ArgumentPusherArray ap(methodID, args); \
1739 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1740 ret = jvalue.get_##ResultType(); \
1741 return ret;\
1742 JNI_END
1743
1744 // the runtime type of subword integral basic types is integer
1745 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1746 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1747 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1748 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1749
1750 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1751 DEFINE_CALLMETHOD(jint, Int, T_INT)
1752 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1753 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1754 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1755
1756 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1757 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1758 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1759
1760 #else /* USDT2 */
1761
1762 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1763 , EntryProbe, ReturnProbe) \
1764 \
1765 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1766 , ReturnProbe); \
1767 \
1768 JNI_ENTRY(ResultType, \
1769 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1770 JNIWrapper("Call" XSTR(Result) "Method"); \
1771 \
1772 EntryProbe; \
1773 ResultType ret = 0;\
1774 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1775 (const ResultType&)ret);\
1776 \
1777 va_list args; \
1778 va_start(args, methodID); \
1779 JavaValue jvalue(Tag); \
1780 JNI_ArgumentPusherVaArg ap(methodID, args); \
1781 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1782 va_end(args); \
1783 ret = jvalue.get_##ResultType(); \
1784 return ret;\
1785 JNI_END
1786
1787 // the runtime type of subword integral basic types is integer
1788 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1789 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1790 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1791 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1792 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1793 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1794 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1795 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1796 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1797 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1798 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1799 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1800
1801 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1802 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1803 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1804 DEFINE_CALLMETHOD(jint, Int, T_INT,
1805 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1806 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1807 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1808 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1809 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1810 // Float and double probes don't return value because dtrace doesn't currently support it
1811 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1812 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1813 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1814 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1815 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1816 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1817
1818 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1819 , EntryProbe, ReturnProbe) \
1820 \
1821 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1822 , ReturnProbe); \
1823 \
1824 JNI_ENTRY(ResultType, \
1825 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1826 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1827 \
1828 EntryProbe;\
1829 ResultType ret = 0;\
1830 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1831 (const ResultType&)ret);\
1832 \
1833 JavaValue jvalue(Tag); \
1834 JNI_ArgumentPusherVaArg ap(methodID, args); \
1835 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1836 ret = jvalue.get_##ResultType(); \
1837 return ret;\
1838 JNI_END
1839
1840 // the runtime type of subword integral basic types is integer
1841 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1842 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1843 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1844 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1845 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1846 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1847 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1848 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1849 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1850 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1851 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1852 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1853
1854 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1855 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1856 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1857 DEFINE_CALLMETHODV(jint, Int, T_INT,
1858 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1859 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1860 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1861 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1862 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1863 // Float and double probes don't return value because dtrace doesn't currently support it
1864 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1865 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1866 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1867 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1868 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1869 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1870
1871 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1872 , EntryProbe, ReturnProbe) \
1873 \
1874 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1875 , ReturnProbe); \
1876 \
1877 JNI_ENTRY(ResultType, \
1878 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1879 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1880 EntryProbe; \
1881 ResultType ret = 0;\
1882 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1883 (const ResultType&)ret);\
1884 \
1885 JavaValue jvalue(Tag); \
1886 JNI_ArgumentPusherArray ap(methodID, args); \
1887 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1888 ret = jvalue.get_##ResultType(); \
1889 return ret;\
1890 JNI_END
1891
1892 // the runtime type of subword integral basic types is integer
1893 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1894 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1895 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1896 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1897 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1898 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1899 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1900 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1901 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1902 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1903 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1904 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1905
1906 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1907 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1908 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1909 DEFINE_CALLMETHODA(jint, Int, T_INT,
1910 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1911 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1912 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1913 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1914 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1915 // Float and double probes don't return value because dtrace doesn't currently support it
1916 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1917 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1918 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1919 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1920 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1921 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1922
1923 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1924 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1925 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1926
1927 #endif /* USDT2 */
1928
1929 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1930 JNIWrapper("CallVoidMethod");
1931 #ifndef USDT2
1932 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1933 #else /* USDT2 */
1934 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1935 env, obj, (uintptr_t) methodID);
1936 #endif /* USDT2 */
1937 DT_VOID_RETURN_MARK(CallVoidMethod);
1938
1939 va_list args;
1940 va_start(args, methodID);
1941 JavaValue jvalue(T_VOID);
1942 JNI_ArgumentPusherVaArg ap(methodID, args);
1943 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1944 va_end(args);
1945 JNI_END
1946
1947
1948 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1949 JNIWrapper("CallVoidMethodV");
1950 #ifndef USDT2
1951 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1952 #else /* USDT2 */
1953 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1954 env, obj, (uintptr_t) methodID);
1955 #endif /* USDT2 */
1956 DT_VOID_RETURN_MARK(CallVoidMethodV);
1957
1958 JavaValue jvalue(T_VOID);
1959 JNI_ArgumentPusherVaArg ap(methodID, args);
1960 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1961 JNI_END
1962
1963
1964 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1965 JNIWrapper("CallVoidMethodA");
1966 #ifndef USDT2
1967 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1968 #else /* USDT2 */
1969 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1970 env, obj, (uintptr_t) methodID);
1971 #endif /* USDT2 */
1972 DT_VOID_RETURN_MARK(CallVoidMethodA);
1973
1974 JavaValue jvalue(T_VOID);
1975 JNI_ArgumentPusherArray ap(methodID, args);
1976 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1977 JNI_END
1978
1979
1980 #ifndef USDT2
1981 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1982 \
1983 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1984 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1985 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1986 \
1987 JNI_ENTRY(ResultType, \
1988 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1989 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1990 \
1991 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1992 ResultType ret;\
1993 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1994 (const ResultType&)ret);\
1995 \
1996 va_list args; \
1997 va_start(args, methodID); \
1998 JavaValue jvalue(Tag); \
1999 JNI_ArgumentPusherVaArg ap(methodID, args); \
2000 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2001 va_end(args); \
2002 ret = jvalue.get_##ResultType(); \
2003 return ret;\
2004 JNI_END \
2005 \
2006 JNI_ENTRY(ResultType, \
2007 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2008 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
2009 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
2010 ResultType ret;\
2011 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2012 (const ResultType&)ret);\
2013 \
2014 JavaValue jvalue(Tag); \
2015 JNI_ArgumentPusherVaArg ap(methodID, args); \
2016 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2017 ret = jvalue.get_##ResultType(); \
2018 return ret;\
2019 JNI_END \
2020 \
2021 JNI_ENTRY(ResultType, \
2022 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2023 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2024 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
2025 ResultType ret;\
2026 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2027 (const ResultType&)ret);\
2028 \
2029 JavaValue jvalue(Tag); \
2030 JNI_ArgumentPusherArray ap(methodID, args); \
2031 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2032 ret = jvalue.get_##ResultType(); \
2033 return ret;\
2034 JNI_END
2035
2036 // the runtime type of subword integral basic types is integer
2037 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2038 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2039 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2040 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2041
2042 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2043 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2044 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2045 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2046 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2047
2048
2049 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2050 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2051 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2052
2053 #else /* USDT2 */
2054
2055 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2056 , EntryProbe, ReturnProbe) \
2057 \
2058 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2059 , ReturnProbe);\
2060 \
2061 JNI_ENTRY(ResultType, \
2062 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2063 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2064 \
2065 EntryProbe;\
2066 ResultType ret;\
2067 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2068 (const ResultType&)ret);\
2069 \
2070 va_list args; \
2071 va_start(args, methodID); \
2072 JavaValue jvalue(Tag); \
2073 JNI_ArgumentPusherVaArg ap(methodID, args); \
2074 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2075 va_end(args); \
2076 ret = jvalue.get_##ResultType(); \
2077 return ret;\
2078 JNI_END
2079
2080 // the runtime type of subword integral basic types is integer
2081 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2082 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2083 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2084 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2085 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2086 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2087 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2088 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2089 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2090 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2091 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2092 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2093
2094 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2095 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2096 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2097 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2098 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2099 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2100 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2101 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2102 // Float and double probes don't return value because dtrace doesn't currently support it
2103 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2104 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2105 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2106 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2107 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2108 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2109 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2110
2111 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2112 , EntryProbe, ReturnProbe) \
2113 \
2114 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2115 , ReturnProbe);\
2116 \
2117 JNI_ENTRY(ResultType, \
2118 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2119 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2120 \
2121 EntryProbe;\
2122 ResultType ret;\
2123 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2124 (const ResultType&)ret);\
2125 \
2126 JavaValue jvalue(Tag); \
2127 JNI_ArgumentPusherVaArg ap(methodID, args); \
2128 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2129 ret = jvalue.get_##ResultType(); \
2130 return ret;\
2131 JNI_END
2132
2133 // the runtime type of subword integral basic types is integer
2134 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2135 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2136 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2137 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2138 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2139 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2140 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2141 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2142 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2143 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2144 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2145 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2146
2147 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2148 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2149 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2150 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2151 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2152 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2153 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2154 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2155 // Float and double probes don't return value because dtrace doesn't currently support it
2156 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2157 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2158 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2159 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2160 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2161 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2162 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2163
2164 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2165 , EntryProbe, ReturnProbe) \
2166 \
2167 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2168 , ReturnProbe);\
2169 \
2170 JNI_ENTRY(ResultType, \
2171 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2172 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2173 \
2174 EntryProbe;\
2175 ResultType ret;\
2176 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2177 (const ResultType&)ret);\
2178 \
2179 JavaValue jvalue(Tag); \
2180 JNI_ArgumentPusherArray ap(methodID, args); \
2181 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2182 ret = jvalue.get_##ResultType(); \
2183 return ret;\
2184 JNI_END
2185
2186 // the runtime type of subword integral basic types is integer
2187 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2188 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2189 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2190 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2191 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2192 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2193 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2194 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2195 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2196 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2197 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2198 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2199
2200 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2201 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2202 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2203 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2204 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2205 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2206 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2207 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2208 // Float and double probes don't return value because dtrace doesn't currently support it
2209 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2210 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2211 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2212 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2213 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2214 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2215 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2216
2217 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2218 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2219 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2220 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2221 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2222 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2223 #endif /* USDT2 */
2224
2225 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2226 JNIWrapper("CallNonvirtualVoidMethod");
2227
2228 #ifndef USDT2
2229 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2230 env, obj, cls, methodID);
2231 #else /* USDT2 */
2232 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2233 env, obj, cls, (uintptr_t) methodID);
2234 #endif /* USDT2 */
2235 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2236
2237 va_list args;
2238 va_start(args, methodID);
2239 JavaValue jvalue(T_VOID);
2240 JNI_ArgumentPusherVaArg ap(methodID, args);
2241 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2242 va_end(args);
2243 JNI_END
2244
2245
2246 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2247 JNIWrapper("CallNonvirtualVoidMethodV");
2248
2249 #ifndef USDT2
2250 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2251 env, obj, cls, methodID);
2252 #else /* USDT2 */
2253 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2254 env, obj, cls, (uintptr_t) methodID);
2255 #endif /* USDT2 */
2256 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2257
2258 JavaValue jvalue(T_VOID);
2259 JNI_ArgumentPusherVaArg ap(methodID, args);
2260 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2261 JNI_END
2262
2263
2264 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2265 JNIWrapper("CallNonvirtualVoidMethodA");
2266 #ifndef USDT2
2267 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2268 env, obj, cls, methodID);
2269 #else /* USDT2 */
2270 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2271 env, obj, cls, (uintptr_t) methodID);
2272 #endif /* USDT2 */
2273 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2274 JavaValue jvalue(T_VOID);
2275 JNI_ArgumentPusherArray ap(methodID, args);
2276 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2277 JNI_END
2278
2279
2280 #ifndef USDT2
2281 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2282 \
2283 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2284 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2285 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2286 \
2287 JNI_ENTRY(ResultType, \
2288 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2289 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2290 \
2291 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2292 ResultType ret = 0;\
2293 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2294 (const ResultType&)ret);\
2295 \
2296 va_list args; \
2297 va_start(args, methodID); \
2298 JavaValue jvalue(Tag); \
2299 JNI_ArgumentPusherVaArg ap(methodID, args); \
2300 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2301 va_end(args); \
2302 ret = jvalue.get_##ResultType(); \
2303 return ret;\
2304 JNI_END \
2305 \
2306 JNI_ENTRY(ResultType, \
2307 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2308 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2309 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2310 ResultType ret = 0;\
2311 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2312 (const ResultType&)ret);\
2313 \
2314 JavaValue jvalue(Tag); \
2315 JNI_ArgumentPusherVaArg ap(methodID, args); \
2316 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2317 ret = jvalue.get_##ResultType(); \
2318 return ret;\
2319 JNI_END \
2320 \
2321 JNI_ENTRY(ResultType, \
2322 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2323 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2324 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2325 ResultType ret = 0;\
2326 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2327 (const ResultType&)ret);\
2328 \
2329 JavaValue jvalue(Tag); \
2330 JNI_ArgumentPusherArray ap(methodID, args); \
2331 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2332 ret = jvalue.get_##ResultType(); \
2333 return ret;\
2334 JNI_END
2335
2336 // the runtime type of subword integral basic types is integer
2337 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2338 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2339 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2340 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2341
2342 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2343 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2344 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2345 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2346 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2347
2348
2349 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2350 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2351 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2352
2353 #else /* USDT2 */
2354
2355 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2356 , EntryProbe, ResultProbe) \
2357 \
2358 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2359 , ResultProbe); \
2360 \
2361 JNI_ENTRY(ResultType, \
2362 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2363 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2364 \
2365 EntryProbe; \
2366 ResultType ret = 0;\
2367 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2368 (const ResultType&)ret);\
2369 \
2370 va_list args; \
2371 va_start(args, methodID); \
2372 JavaValue jvalue(Tag); \
2373 JNI_ArgumentPusherVaArg ap(methodID, args); \
2374 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2375 va_end(args); \
2376 ret = jvalue.get_##ResultType(); \
2377 return ret;\
2378 JNI_END
2379
2380 // the runtime type of subword integral basic types is integer
2381 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2382 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2383 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2384 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2385 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2386 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2387 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2388 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2389 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2390 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2391 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2392 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2393
2394 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2395 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2396 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2397 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2398 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2399 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2400 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2401 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2402 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2403 // Float and double probes don't return value because dtrace doesn't currently support it
2404 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2405 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2406 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2407 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2408 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2409 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2410
2411 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2412 , EntryProbe, ResultProbe) \
2413 \
2414 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2415 , ResultProbe); \
2416 \
2417 JNI_ENTRY(ResultType, \
2418 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2419 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2420 \
2421 EntryProbe; \
2422 ResultType ret = 0;\
2423 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2424 (const ResultType&)ret);\
2425 \
2426 JavaValue jvalue(Tag); \
2427 JNI_ArgumentPusherVaArg ap(methodID, args); \
2428 /* Make sure class is initialized before trying to invoke its method */ \
2429 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2430 k()->initialize(CHECK_0); \
2431 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2432 va_end(args); \
2433 ret = jvalue.get_##ResultType(); \
2434 return ret;\
2435 JNI_END
2436
2437 // the runtime type of subword integral basic types is integer
2438 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2439 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2440 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2441 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2442 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2443 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2444 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2445 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2446 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2447 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2448 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2449 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2450
2451 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2452 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2453 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2454 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2455 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2456 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2457 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2458 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2459 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2460 // Float and double probes don't return value because dtrace doesn't currently support it
2461 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2462 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2463 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2464 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2465 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2466 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2467
2468 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2469 , EntryProbe, ResultProbe) \
2470 \
2471 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2472 , ResultProbe); \
2473 \
2474 JNI_ENTRY(ResultType, \
2475 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2476 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2477 \
2478 EntryProbe; \
2479 ResultType ret = 0;\
2480 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2481 (const ResultType&)ret);\
2482 \
2483 JavaValue jvalue(Tag); \
2484 JNI_ArgumentPusherArray ap(methodID, args); \
2485 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2486 ret = jvalue.get_##ResultType(); \
2487 return ret;\
2488 JNI_END
2489
2490 // the runtime type of subword integral basic types is integer
2491 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2492 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2493 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2494 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2495 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2496 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2497 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2498 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2499 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2500 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2501 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2502 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2503
2504 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2505 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2506 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2507 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2508 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2509 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2510 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2511 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2512 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2513 // Float and double probes don't return value because dtrace doesn't currently support it
2514 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2515 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2516 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2517 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2518 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2519 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2520
2521 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2522 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2523 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2524 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2525 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2526 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2527 #endif /* USDT2 */
2528
2529 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2530 JNIWrapper("CallStaticVoidMethod");
2531 #ifndef USDT2
2532 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2533 #else /* USDT2 */
2534 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2535 env, cls, (uintptr_t) methodID);
2536 #endif /* USDT2 */
2537 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2538
2539 va_list args;
2540 va_start(args, methodID);
2541 JavaValue jvalue(T_VOID);
2542 JNI_ArgumentPusherVaArg ap(methodID, args);
2543 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2544 va_end(args);
2545 JNI_END
2546
2547
2548 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2549 JNIWrapper("CallStaticVoidMethodV");
2550 #ifndef USDT2
2551 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2552 #else /* USDT2 */
2553 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2554 env, cls, (uintptr_t) methodID);
2555 #endif /* USDT2 */
2556 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2557
2558 JavaValue jvalue(T_VOID);
2559 JNI_ArgumentPusherVaArg ap(methodID, args);
2560 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2561 JNI_END
2562
2563
2564 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2565 JNIWrapper("CallStaticVoidMethodA");
2566 #ifndef USDT2
2567 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2568 #else /* USDT2 */
2569 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2570 env, cls, (uintptr_t) methodID);
2571 #endif /* USDT2 */
2572 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2573
2574 JavaValue jvalue(T_VOID);
2575 JNI_ArgumentPusherArray ap(methodID, args);
2576 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2577 JNI_END
2578
2579
2580 //
2581 // Accessing Fields
2582 //
2583
2584
2585 #ifndef USDT2
2586 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2587 #else /* USDT2 */
2588 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2589 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2590 #endif /* USDT2 */
2591
2592 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2593 const char *name, const char *sig))
2594 JNIWrapper("GetFieldID");
2595 #ifndef USDT2
2596 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2597 #else /* USDT2 */
2598 HOTSPOT_JNI_GETFIELDID_ENTRY(
2599 env, clazz, (char *) name, (char *) sig);
2600 #endif /* USDT2 */
2601 jfieldID ret = 0;
2602 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2603
2604 // The class should have been loaded (we have an instance of the class
2605 // passed in) so the field and signature should already be in the symbol
2606 // table. If they're not there, the field doesn't exist.
2607 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2608 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2609 if (fieldname == NULL || signame == NULL) {
2610 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2611 }
2612 KlassHandle k(THREAD,
2613 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2614 // Make sure class is initialized before handing id's out to fields
2615 k()->initialize(CHECK_NULL);
2616
2617 fieldDescriptor fd;
2618 if (!k()->oop_is_instance() ||
2619 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2620 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2621 }
2622
2623 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2624 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2625 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2626 return ret;
2627 JNI_END
2628
2629
2630 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2631 JNIWrapper("GetObjectField");
2632 #ifndef USDT2
2633 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2634 #else /* USDT2 */
2635 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2636 env, obj, (uintptr_t) fieldID);
2637 #endif /* USDT2 */
2638 oop o = JNIHandles::resolve_non_null(obj);
2639 Klass* k = o->klass();
2640 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2641 // Keep JVMTI addition small and only check enabled flag here.
2642 // jni_GetField_probe() assumes that is okay to create handles.
2643 if (JvmtiExport::should_post_field_access()) {
2644 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2645 }
2646 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2647 #ifndef SERIALGC
2648 // If G1 is enabled and we are accessing the value of the referent
2649 // field in a reference object then we need to register a non-null
2650 // referent with the SATB barrier.
2651 if (UseG1GC) {
2652 bool needs_barrier = false;
2653
2654 if (ret != NULL &&
2655 offset == java_lang_ref_Reference::referent_offset &&
2656 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2657 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2658 needs_barrier = true;
2659 }
2660
2661 if (needs_barrier) {
2662 oop referent = JNIHandles::resolve(ret);
2663 G1SATBCardTableModRefBS::enqueue(referent);
2664 }
2665 }
2666 #endif // SERIALGC
2667 #ifndef USDT2
2668 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2669 #else /* USDT2 */
2670 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2671 ret);
2672 #endif /* USDT2 */
2673 return ret;
2674 JNI_END
2675
2676
2677 #ifndef USDT2
2678 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2679 \
2680 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2681 \
2682 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2683 JNIWrapper("Get" XSTR(Result) "Field"); \
2684 \
2685 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2686 Return ret = 0;\
2687 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2688 \
2689 oop o = JNIHandles::resolve_non_null(obj); \
2690 Klass* k = o->klass(); \
2691 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2692 /* Keep JVMTI addition small and only check enabled flag here. */ \
2693 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2694 /* and creates a ResetNoHandleMark. */ \
2695 if (JvmtiExport::should_post_field_access()) { \
2696 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2697 } \
2698 ret = o->Fieldname##_field(offset); \
2699 return ret; \
2700 JNI_END
2701
2702 DEFINE_GETFIELD(jboolean, bool, Boolean)
2703 DEFINE_GETFIELD(jbyte, byte, Byte)
2704 DEFINE_GETFIELD(jchar, char, Char)
2705 DEFINE_GETFIELD(jshort, short, Short)
2706 DEFINE_GETFIELD(jint, int, Int)
2707 DEFINE_GETFIELD(jlong, long, Long)
2708 DEFINE_GETFIELD(jfloat, float, Float)
2709 DEFINE_GETFIELD(jdouble, double, Double)
2710
2711 #else /* USDT2 */
2712
2713 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2714 , EntryProbe, ReturnProbe) \
2715 \
2716 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2717 , ReturnProbe); \
2718 \
2719 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2720 JNIWrapper("Get" XSTR(Result) "Field"); \
2721 \
2722 EntryProbe; \
2723 Return ret = 0;\
2724 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2725 \
2726 oop o = JNIHandles::resolve_non_null(obj); \
2727 Klass* k = o->klass(); \
2728 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2729 /* Keep JVMTI addition small and only check enabled flag here. */ \
2730 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2731 /* and creates a ResetNoHandleMark. */ \
2732 if (JvmtiExport::should_post_field_access()) { \
2733 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2734 } \
2735 ret = o->Fieldname##_field(offset); \
2736 return ret; \
2737 JNI_END
2738
2739 DEFINE_GETFIELD(jboolean, bool, Boolean
2740 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2741 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2742 DEFINE_GETFIELD(jbyte, byte, Byte
2743 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2744 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2745 DEFINE_GETFIELD(jchar, char, Char
2746 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2747 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2748 DEFINE_GETFIELD(jshort, short, Short
2749 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2750 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2751 DEFINE_GETFIELD(jint, int, Int
2752 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2753 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2754 DEFINE_GETFIELD(jlong, long, Long
2755 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2756 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2757 // Float and double probes don't return value because dtrace doesn't currently support it
2758 DEFINE_GETFIELD(jfloat, float, Float
2759 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2760 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2761 DEFINE_GETFIELD(jdouble, double, Double
2762 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2763 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2764 #endif /* USDT2 */
2765
2766 address jni_GetBooleanField_addr() {
2767 return (address)jni_GetBooleanField;
2768 }
2769 address jni_GetByteField_addr() {
2770 return (address)jni_GetByteField;
2771 }
2772 address jni_GetCharField_addr() {
2773 return (address)jni_GetCharField;
2774 }
2775 address jni_GetShortField_addr() {
2776 return (address)jni_GetShortField;
2777 }
2778 address jni_GetIntField_addr() {
2779 return (address)jni_GetIntField;
2780 }
2781 address jni_GetLongField_addr() {
2782 return (address)jni_GetLongField;
2783 }
2784 address jni_GetFloatField_addr() {
2785 return (address)jni_GetFloatField;
2786 }
2787 address jni_GetDoubleField_addr() {
2788 return (address)jni_GetDoubleField;
2789 }
2790
2791 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2792 JNIWrapper("SetObjectField");
2793 #ifndef USDT2
2794 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2795 #else /* USDT2 */
2796 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2797 env, obj, (uintptr_t) fieldID, value);
2798 #endif /* USDT2 */
2799 oop o = JNIHandles::resolve_non_null(obj);
2800 Klass* k = o->klass();
2801 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2802 // Keep JVMTI addition small and only check enabled flag here.
2803 // jni_SetField_probe_nh() assumes that is not okay to create handles
2804 // and creates a ResetNoHandleMark.
2805 if (JvmtiExport::should_post_field_modification()) {
2806 jvalue field_value;
2807 field_value.l = value;
2808 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2809 }
2810 o->obj_field_put(offset, JNIHandles::resolve(value));
2811 #ifndef USDT2
2812 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2813 #else /* USDT2 */
2814 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2815 );
2816 #endif /* USDT2 */
2817 JNI_END
2818
2819 #ifndef USDT2
2820 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2821 \
2822 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2823 JNIWrapper("Set" XSTR(Result) "Field"); \
2824 \
2825 FP_SELECT_##Result( \
2826 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2827 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2828 \
2829 oop o = JNIHandles::resolve_non_null(obj); \
2830 Klass* k = o->klass(); \
2831 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2832 /* Keep JVMTI addition small and only check enabled flag here. */ \
2833 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2834 /* and creates a ResetNoHandleMark. */ \
2835 if (JvmtiExport::should_post_field_modification()) { \
2836 jvalue field_value; \
2837 field_value.unionType = value; \
2838 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2839 } \
2840 o->Fieldname##_field_put(offset, value); \
2841 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2842 JNI_END
2843
2844 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2845 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2846 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2847 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2848 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2849 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2850 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2851 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2852
2853 #else /* USDT2 */
2854
2855 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2856 , EntryProbe, ReturnProbe) \
2857 \
2858 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2859 JNIWrapper("Set" XSTR(Result) "Field"); \
2860 \
2861 EntryProbe; \
2862 \
2863 oop o = JNIHandles::resolve_non_null(obj); \
2864 Klass* k = o->klass(); \
2865 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2866 /* Keep JVMTI addition small and only check enabled flag here. */ \
2867 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2868 /* and creates a ResetNoHandleMark. */ \
2869 if (JvmtiExport::should_post_field_modification()) { \
2870 jvalue field_value; \
2871 field_value.unionType = value; \
2872 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2873 } \
2874 o->Fieldname##_field_put(offset, value); \
2875 ReturnProbe; \
2876 JNI_END
2877
2878 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2879 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2880 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2881 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2882 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2883 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2884 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2885 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2886 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2887 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2888 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2889 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2890 DEFINE_SETFIELD(jint, int, Int, 'I', i
2891 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2892 HOTSPOT_JNI_SETINTFIELD_RETURN())
2893 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2894 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2895 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2896 // Float and double probes don't return value because dtrace doesn't currently support it
2897 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2898 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2899 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2900 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2901 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2902 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2903 #endif /* USDT2 */
2904
2905 #ifndef USDT2
2906 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2907 #else /* USDT2 */
2908 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2909 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2910 #endif /* USDT2 */
2911
2912 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2913 JNIWrapper("ToReflectedField");
2914 #ifndef USDT2
2915 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2916 env, cls, fieldID, isStatic);
2917 #else /* USDT2 */
2918 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2919 env, cls, (uintptr_t) fieldID, isStatic);
2920 #endif /* USDT2 */
2921 jobject ret = NULL;
2922 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2923
2924 fieldDescriptor fd;
2925 bool found = false;
2926 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2927
2928 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2929
2930 if (isStatic) {
2931 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2932 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2933 assert(id->is_static_field_id(), "invalid static field id");
2934 found = id->find_local_field(&fd);
2935 } else {
2936 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2937 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2938 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2939 }
2940 assert(found, "bad fieldID passed into jni_ToReflectedField");
2941 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2942 ret = JNIHandles::make_local(env, reflected);
2943 return ret;
2944 JNI_END
2945
2946
2947 //
2948 // Accessing Static Fields
2949 //
2950 #ifndef USDT2
2951 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2952 #else /* USDT2 */
2953 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2954 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2955 #endif /* USDT2 */
2956
2957 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2958 const char *name, const char *sig))
2959 JNIWrapper("GetStaticFieldID");
2960 #ifndef USDT2
2961 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2962 #else /* USDT2 */
2963 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2964 env, clazz, (char *) name, (char *) sig);
2965 #endif /* USDT2 */
2966 jfieldID ret = NULL;
2967 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2968
2969 // The class should have been loaded (we have an instance of the class
2970 // passed in) so the field and signature should already be in the symbol
2971 // table. If they're not there, the field doesn't exist.
2972 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2973 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2974 if (fieldname == NULL || signame == NULL) {
2975 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2976 }
2977 KlassHandle k(THREAD,
2978 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2979 // Make sure class is initialized before handing id's out to static fields
2980 k()->initialize(CHECK_NULL);
2981
2982 fieldDescriptor fd;
2983 if (!k()->oop_is_instance() ||
2984 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2985 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2986 }
2987
2988 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2989 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2990 debug_only(id->set_is_static_field_id();)
2991
2992 debug_only(id->verify(fd.field_holder()));
2993
2994 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2995 return ret;
2996 JNI_END
2997
2998
2999 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
3000 JNIWrapper("GetStaticObjectField");
3001 #ifndef USDT2
3002 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
3003 #else /* USDT2 */
3004 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
3005 env, clazz, (uintptr_t) fieldID);
3006 #endif /* USDT2 */
3007 #if INCLUDE_JNI_CHECK
3008 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
3009 #endif // INCLUDE_JNI_CHECK
3010 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3011 assert(id->is_static_field_id(), "invalid static field id");
3012 // Keep JVMTI addition small and only check enabled flag here.
3013 // jni_GetField_probe() assumes that is okay to create handles.
3014 if (JvmtiExport::should_post_field_access()) {
3015 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
3016 }
3017 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
3018 #ifndef USDT2
3019 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
3020 #else /* USDT2 */
3021 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
3022 ret);
3023 #endif /* USDT2 */
3024 return ret;
3025 JNI_END
3026
3027 #ifndef USDT2
3028 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3029 \
3030 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3031 \
3032 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3033 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3034 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3035 Return ret = 0;\
3036 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3037 (const Return&)ret);\
3038 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3039 assert(id->is_static_field_id(), "invalid static field id"); \
3040 /* Keep JVMTI addition small and only check enabled flag here. */ \
3041 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3042 if (JvmtiExport::should_post_field_access()) { \
3043 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3044 } \
3045 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3046 return ret;\
3047 JNI_END
3048
3049 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3050 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3051 DEFINE_GETSTATICFIELD(jchar, char, Char)
3052 DEFINE_GETSTATICFIELD(jshort, short, Short)
3053 DEFINE_GETSTATICFIELD(jint, int, Int)
3054 DEFINE_GETSTATICFIELD(jlong, long, Long)
3055 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3056 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3057
3058 #else /* USDT2 */
3059
3060 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3061 , EntryProbe, ReturnProbe) \
3062 \
3063 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3064 , ReturnProbe); \
3065 \
3066 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3067 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3068 EntryProbe; \
3069 Return ret = 0;\
3070 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3071 (const Return&)ret);\
3072 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3073 assert(id->is_static_field_id(), "invalid static field id"); \
3074 /* Keep JVMTI addition small and only check enabled flag here. */ \
3075 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3076 if (JvmtiExport::should_post_field_access()) { \
3077 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3078 } \
3079 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3080 return ret;\
3081 JNI_END
3082
3083 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3084 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3085 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3086 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3087 DEFINE_GETSTATICFIELD(jchar, char, Char
3088 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3089 DEFINE_GETSTATICFIELD(jshort, short, Short
3090 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3091 DEFINE_GETSTATICFIELD(jint, int, Int
3092 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3093 DEFINE_GETSTATICFIELD(jlong, long, Long
3094 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3095 // Float and double probes don't return value because dtrace doesn't currently support it
3096 DEFINE_GETSTATICFIELD(jfloat, float, Float
3097 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3098 DEFINE_GETSTATICFIELD(jdouble, double, Double
3099 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3100 #endif /* USDT2 */
3101
3102 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3103 JNIWrapper("SetStaticObjectField");
3104 #ifndef USDT2
3105 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3106 #else /* USDT2 */
3107 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3108 env, clazz, (uintptr_t) fieldID, value);
3109 #endif /* USDT2 */
3110 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3111 assert(id->is_static_field_id(), "invalid static field id");
3112 // Keep JVMTI addition small and only check enabled flag here.
3113 // jni_SetField_probe() assumes that is okay to create handles.
3114 if (JvmtiExport::should_post_field_modification()) {
3115 jvalue field_value;
3116 field_value.l = value;
3117 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3118 }
3119 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3120 #ifndef USDT2
3121 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3122 #else /* USDT2 */
3123 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3124 );
3125 #endif /* USDT2 */
3126 JNI_END
3127
3128
3129 #ifndef USDT2
3130 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3131 \
3132 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3133 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3134 FP_SELECT_##Result( \
3135 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3136 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3137 \
3138 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3139 assert(id->is_static_field_id(), "invalid static field id"); \
3140 /* Keep JVMTI addition small and only check enabled flag here. */ \
3141 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3142 if (JvmtiExport::should_post_field_modification()) { \
3143 jvalue field_value; \
3144 field_value.unionType = value; \
3145 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3146 } \
3147 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3148 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3149 JNI_END
3150
3151 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3152 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3153 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3154 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3155 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3156 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3157 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3158 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3159
3160 #else /* USDT2 */
3161
3162 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3163 , EntryProbe, ReturnProbe) \
3164 \
3165 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3166 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3167 EntryProbe; \
3168 \
3169 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3170 assert(id->is_static_field_id(), "invalid static field id"); \
3171 /* Keep JVMTI addition small and only check enabled flag here. */ \
3172 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3173 if (JvmtiExport::should_post_field_modification()) { \
3174 jvalue field_value; \
3175 field_value.unionType = value; \
3176 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3177 } \
3178 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3179 ReturnProbe;\
3180 JNI_END
3181
3182 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3183 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3184 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3185 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3186 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3187 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3188 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3189 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3190 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3191 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3192 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3193 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3194 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3195 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3196 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3197 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3198 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3199 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3200 // Float and double probes don't return value because dtrace doesn't currently support it
3201 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3202 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3203 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3204 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3205 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3206 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3207 #endif /* USDT2 */
3208
3209 //
3210 // String Operations
3211 //
3212
3213 // Unicode Interface
3214
3215 #ifndef USDT2
3216 DT_RETURN_MARK_DECL(NewString, jstring);
3217 #else /* USDT2 */
3218 DT_RETURN_MARK_DECL(NewString, jstring
3219 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3220 #endif /* USDT2 */
3221
3222 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3223 JNIWrapper("NewString");
3224 #ifndef USDT2
3225 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3226 #else /* USDT2 */
3227 HOTSPOT_JNI_NEWSTRING_ENTRY(
3228 env, (uint16_t *) unicodeChars, len);
3229 #endif /* USDT2 */
3230 jstring ret = NULL;
3231 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3232 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3233 ret = (jstring) JNIHandles::make_local(env, string);
3234 return ret;
3235 JNI_END
3236
3237
3238 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3239 JNIWrapper("GetStringLength");
3240 #ifndef USDT2
3241 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3242 #else /* USDT2 */
3243 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3244 env, string);
3245 #endif /* USDT2 */
3246 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3247 #ifndef USDT2
3248 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3249 #else /* USDT2 */
3250 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3251 ret);
3252 #endif /* USDT2 */
3253 return ret;
3254 JNI_END
3255
3256
3257 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3258 JNIEnv *env, jstring string, jboolean *isCopy))
3259 JNIWrapper("GetStringChars");
3260 #ifndef USDT2
3261 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3262 #else /* USDT2 */
3263 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3264 env, string, (uintptr_t *) isCopy);
3265 #endif /* USDT2 */
3266 //%note jni_5
3267 if (isCopy != NULL) {
3268 *isCopy = JNI_TRUE;
3269 }
3270 oop s = JNIHandles::resolve_non_null(string);
3271 int s_len = java_lang_String::length(s);
3272 typeArrayOop s_value = java_lang_String::value(s);
3273 int s_offset = java_lang_String::offset(s);
3274 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination
3275 if (s_len > 0) {
3276 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3277 }
3278 buf[s_len] = 0;
3279 #ifndef USDT2
3280 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3281 #else /* USDT2 */
3282 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3283 buf);
3284 #endif /* USDT2 */
3285 return buf;
3286 JNI_END
3287
3288
3289 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3290 JNIWrapper("ReleaseStringChars");
3291 #ifndef USDT2
3292 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3293 #else /* USDT2 */
3294 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3295 env, str, (uint16_t *) chars);
3296 #endif /* USDT2 */
3297 //%note jni_6
3298 if (chars != NULL) {
3299 // Since String objects are supposed to be immutable, don't copy any
3300 // new data back. A bad user will have to go after the char array.
3301 FreeHeap((void*) chars);
3302 }
3303 #ifndef USDT2
3304 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3305 #else /* USDT2 */
3306 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3307 );
3308 #endif /* USDT2 */
3309 JNI_END
3310
3311
3312 // UTF Interface
3313
3314 #ifndef USDT2
3315 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3316 #else /* USDT2 */
3317 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3318 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3319 #endif /* USDT2 */
3320
3321 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3322 JNIWrapper("NewStringUTF");
3323 #ifndef USDT2
3324 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3325 #else /* USDT2 */
3326 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3327 env, (char *) bytes);
3328 #endif /* USDT2 */
3329 jstring ret;
3330 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3331
3332 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3333 ret = (jstring) JNIHandles::make_local(env, result);
3334 return ret;
3335 JNI_END
3336
3337
3338 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3339 JNIWrapper("GetStringUTFLength");
3340 #ifndef USDT2
3341 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3342 #else /* USDT2 */
3343 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3344 env, string);
3345 #endif /* USDT2 */
3346 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3347 #ifndef USDT2
3348 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3349 #else /* USDT2 */
3350 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3351 ret);
3352 #endif /* USDT2 */
3353 return ret;
3354 JNI_END
3355
3356
3357 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3358 JNIWrapper("GetStringUTFChars");
3359 #ifndef USDT2
3360 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3361 #else /* USDT2 */
3362 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3363 env, string, (uintptr_t *) isCopy);
3364 #endif /* USDT2 */
3365 oop java_string = JNIHandles::resolve_non_null(string);
3366 size_t length = java_lang_String::utf8_length(java_string);
3367 char* result = AllocateHeap(length + 1, mtInternal);
3368 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3369 if (isCopy != NULL) *isCopy = JNI_TRUE;
3370 #ifndef USDT2
3371 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3372 #else /* USDT2 */
3373 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3374 result);
3375 #endif /* USDT2 */
3376 return result;
3377 JNI_END
3378
3379
3380 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3381 JNIWrapper("ReleaseStringUTFChars");
3382 #ifndef USDT2
3383 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3384 #else /* USDT2 */
3385 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3386 env, str, (char *) chars);
3387 #endif /* USDT2 */
3388 if (chars != NULL) {
3389 FreeHeap((char*) chars);
3390 }
3391 #ifndef USDT2
3392 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3393 #else /* USDT2 */
3394 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3395 );
3396 #endif /* USDT2 */
3397 JNI_END
3398
3399
3400 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3401 JNIWrapper("GetArrayLength");
3402 #ifndef USDT2
3403 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3404 #else /* USDT2 */
3405 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3406 env, array);
3407 #endif /* USDT2 */
3408 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3409 assert(a->is_array(), "must be array");
3410 jsize ret = a->length();
3411 #ifndef USDT2
3412 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3413 #else /* USDT2 */
3414 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3415 ret);
3416 #endif /* USDT2 */
3417 return ret;
3418 JNI_END
3419
3420
3421 //
3422 // Object Array Operations
3423 //
3424
3425 #ifndef USDT2
3426 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3427 #else /* USDT2 */
3428 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3429 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3430 #endif /* USDT2 */
3431
3432 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3433 JNIWrapper("NewObjectArray");
3434 #ifndef USDT2
3435 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3436 #else /* USDT2 */
3437 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3438 env, length, elementClass, initialElement);
3439 #endif /* USDT2 */
3440 jobjectArray ret = NULL;
3441 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3442 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3443 Klass* ako = ek()->array_klass(CHECK_NULL);
3444 KlassHandle ak = KlassHandle(THREAD, ako);
3445 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3446 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3447 oop initial_value = JNIHandles::resolve(initialElement);
3448 if (initial_value != NULL) { // array already initialized with NULL
3449 for (int index = 0; index < length; index++) {
3450 result->obj_at_put(index, initial_value);
3451 }
3452 }
3453 ret = (jobjectArray) JNIHandles::make_local(env, result);
3454 return ret;
3455 JNI_END
3456
3457 #ifndef USDT2
3458 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3459 #else /* USDT2 */
3460 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3461 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3462 #endif /* USDT2 */
3463
3464 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3465 JNIWrapper("GetObjectArrayElement");
3466 #ifndef USDT2
3467 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3468 #else /* USDT2 */
3469 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3470 env, array, index);
3471 #endif /* USDT2 */
3472 jobject ret = NULL;
3473 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3474 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3475 if (a->is_within_bounds(index)) {
3476 ret = JNIHandles::make_local(env, a->obj_at(index));
3477 return ret;
3478 } else {
3479 char buf[jintAsStringSize];
3480 sprintf(buf, "%d", index);
3481 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3482 }
3483 JNI_END
3484
3485 #ifndef USDT2
3486 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3487 #else /* USDT2 */
3488 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3489 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3490 #endif /* USDT2 */
3491
3492 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3493 JNIWrapper("SetObjectArrayElement");
3494 #ifndef USDT2
3495 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3496 #else /* USDT2 */
3497 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3498 env, array, index, value);
3499 #endif /* USDT2 */
3500 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3501
3502 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3503 oop v = JNIHandles::resolve(value);
3504 if (a->is_within_bounds(index)) {
3505 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3506 a->obj_at_put(index, v);
3507 } else {
3508 THROW(vmSymbols::java_lang_ArrayStoreException());
3509 }
3510 } else {
3511 char buf[jintAsStringSize];
3512 sprintf(buf, "%d", index);
3513 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3514 }
3515 JNI_END
3516
3517
3518 #ifndef USDT2
3519 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3520 \
3521 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3522 \
3523 JNI_ENTRY(Return, \
3524 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3525 JNIWrapper("New" XSTR(Result) "Array"); \
3526 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3527 Return ret = NULL;\
3528 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3529 \
3530 oop obj= oopFactory::Allocator(len, CHECK_0); \
3531 ret = (Return) JNIHandles::make_local(env, obj); \
3532 return ret;\
3533 JNI_END
3534
3535 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3536 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3537 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3538 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3539 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3540 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3541 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3542 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3543
3544 #else /* USDT2 */
3545
3546 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3547 ,EntryProbe,ReturnProbe) \
3548 \
3549 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3550 , ReturnProbe); \
3551 \
3552 JNI_ENTRY(Return, \
3553 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3554 JNIWrapper("New" XSTR(Result) "Array"); \
3555 EntryProbe; \
3556 Return ret = NULL;\
3557 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3558 \
3559 oop obj= oopFactory::Allocator(len, CHECK_0); \
3560 ret = (Return) JNIHandles::make_local(env, obj); \
3561 return ret;\
3562 JNI_END
3563
3564 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3565 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3566 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3567 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3568 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3569 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3570 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3571 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3572 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3573 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3574 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3575 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3576 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3577 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3578 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3579 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3580 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3581 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3582 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3583 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3584 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3585 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3586 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3587 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3588 #endif /* USDT2 */
3589
3590 // Return an address which will fault if the caller writes to it.
3591
3592 static char* get_bad_address() {
3593 static char* bad_address = NULL;
3594 if (bad_address == NULL) {
3595 size_t size = os::vm_allocation_granularity();
3596 bad_address = os::reserve_memory(size);
3597 if (bad_address != NULL) {
3598 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3599 /*is_committed*/false);
3600 }
3601 }
3602 return bad_address;
3603 }
3604
3605
3606 #ifndef USDT2
3607 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3608 \
3609 JNI_QUICK_ENTRY(ElementType*, \
3610 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3611 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3612 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3613 /* allocate an chunk of memory in c land */ \
3614 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3615 ElementType* result; \
3616 int len = a->length(); \
3617 if (len == 0) { \
3618 /* Empty array: legal but useless, can't return NULL. \
3619 * Return a pointer to something useless. \
3620 * Avoid asserts in typeArrayOop. */ \
3621 result = (ElementType*)get_bad_address(); \
3622 } else { \
3623 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3624 /* copy the array to the c chunk */ \
3625 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3626 } \
3627 if (isCopy) *isCopy = JNI_TRUE; \
3628 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3629 return result; \
3630 JNI_END
3631
3632 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3633 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3634 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3635 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3636 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3637 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3638 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3639 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3640
3641 #else /* USDT2 */
3642
3643 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3644 , EntryProbe, ReturnProbe) \
3645 \
3646 JNI_QUICK_ENTRY(ElementType*, \
3647 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3648 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3649 EntryProbe; \
3650 /* allocate an chunk of memory in c land */ \
3651 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3652 ElementType* result; \
3653 int len = a->length(); \
3654 if (len == 0) { \
3655 /* Empty array: legal but useless, can't return NULL. \
3656 * Return a pointer to something useless. \
3657 * Avoid asserts in typeArrayOop. */ \
3658 result = (ElementType*)get_bad_address(); \
3659 } else { \
3660 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3661 /* copy the array to the c chunk */ \
3662 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3663 } \
3664 if (isCopy) *isCopy = JNI_TRUE; \
3665 ReturnProbe; \
3666 return result; \
3667 JNI_END
3668
3669 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3670 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3671 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3672 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3673 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3674 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3675 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3676 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3677 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3678 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3679 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3680 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3681 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3682 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3683 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3684 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3685 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3686 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3687 // Float and double probes don't return value because dtrace doesn't currently support it
3688 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3689 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3690 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3691 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3692 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3693 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3694 #endif /* USDT2 */
3695
3696 #ifndef USDT2
3697 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3698 \
3699 JNI_QUICK_ENTRY(void, \
3700 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3701 ElementType *buf, jint mode)) \
3702 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3703 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3704 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3705 int len = a->length(); \
3706 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3707 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3708 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3709 } \
3710 if ((mode == 0) || (mode == JNI_ABORT)) { \
3711 FreeHeap(buf); \
3712 } \
3713 } \
3714 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3715 JNI_END
3716
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3722 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3723 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3724 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3725
3726 #else /* USDT2 */
3727
3728 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3729 , EntryProbe, ReturnProbe);\
3730 \
3731 JNI_QUICK_ENTRY(void, \
3732 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3733 ElementType *buf, jint mode)) \
3734 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3735 EntryProbe; \
3736 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3737 int len = a->length(); \
3738 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3739 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3740 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3741 } \
3742 if ((mode == 0) || (mode == JNI_ABORT)) { \
3743 FreeHeap(buf); \
3744 } \
3745 } \
3746 ReturnProbe; \
3747 JNI_END
3748
3749 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3750 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3751 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3752 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3753 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3754 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3755 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3756 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3757 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3758 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3759 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3760 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3761 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3762 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3763 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3764 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3765 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3766 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3767 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3768 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3769 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3770 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3771 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3772 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3773 #endif /* USDT2 */
3774
3775 #ifndef USDT2
3776 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3777 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3778 \
3779 JNI_ENTRY(void, \
3780 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3781 jsize len, ElementType *buf)) \
3782 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3783 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3784 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3785 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3786 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3787 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3788 } else { \
3789 if (len > 0) { \
3790 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3791 memcpy((u_char*) buf, \
3792 (u_char*) src->Tag##_at_addr(start), \
3793 len << sc); \
3794 } \
3795 } \
3796 JNI_END
3797
3798 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3799 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3800 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3801 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3802 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3803 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3804 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3805 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3806
3807 #else /* USDT2 */
3808
3809 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3810 , EntryProbe, ReturnProbe); \
3811 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3812 , ReturnProbe); \
3813 \
3814 JNI_ENTRY(void, \
3815 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3816 jsize len, ElementType *buf)) \
3817 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3818 EntryProbe; \
3819 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3820 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3821 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3822 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3823 } else { \
3824 if (len > 0) { \
3825 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3826 memcpy((u_char*) buf, \
3827 (u_char*) src->Tag##_at_addr(start), \
3828 len << sc); \
3829 } \
3830 } \
3831 JNI_END
3832
3833 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3834 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3835 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3836 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3837 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3838 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3839 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3840 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3841 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3842 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3843 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3844 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3845 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3846 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3847 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3848 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3849 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3850 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3851 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3852 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3853 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3854 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3855 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3856 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3857 #endif /* USDT2 */
3858
3859 #ifndef USDT2
3860 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3861 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3862 \
3863 JNI_ENTRY(void, \
3864 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3865 jsize len, const ElementType *buf)) \
3866 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3867 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3868 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3869 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3870 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3871 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3872 } else { \
3873 if (len > 0) { \
3874 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3875 memcpy((u_char*) dst->Tag##_at_addr(start), \
3876 (u_char*) buf, \
3877 len << sc); \
3878 } \
3879 } \
3880 JNI_END
3881
3882 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3883 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3884 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3885 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3886 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3887 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3888 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3889 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3890
3891 #else /* USDT2 */
3892
3893 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3894 , EntryProbe, ReturnProbe); \
3895 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3896 ,ReturnProbe); \
3897 \
3898 JNI_ENTRY(void, \
3899 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3900 jsize len, const ElementType *buf)) \
3901 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3902 EntryProbe; \
3903 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3904 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3905 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3906 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3907 } else { \
3908 if (len > 0) { \
3909 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3910 memcpy((u_char*) dst->Tag##_at_addr(start), \
3911 (u_char*) buf, \
3912 len << sc); \
3913 } \
3914 } \
3915 JNI_END
3916
3917 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3918 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3919 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3920 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3921 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3922 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3923 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3924 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3925 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3926 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3927 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3928 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3929 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3930 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3931 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3932 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3933 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3934 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3935 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3936 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3937 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3938 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3939 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3940 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3941 #endif /* USDT2 */
3942
3943
3944 //
3945 // Interception of natives
3946 //
3947
3948 // The RegisterNatives call being attempted tried to register with a method that
3949 // is not native. Ask JVM TI what prefixes have been specified. Then check
3950 // to see if the native method is now wrapped with the prefixes. See the
3951 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3952 static Method* find_prefixed_native(KlassHandle k,
3953 Symbol* name, Symbol* signature, TRAPS) {
3954 #if INCLUDE_JVMTI
3955 ResourceMark rm(THREAD);
3956 Method* method;
3957 int name_len = name->utf8_length();
3958 char* name_str = name->as_utf8();
3959 int prefix_count;
3960 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3961 for (int i = 0; i < prefix_count; i++) {
3962 char* prefix = prefixes[i];
3963 int prefix_len = (int)strlen(prefix);
3964
3965 // try adding this prefix to the method name and see if it matches another method name
3966 int trial_len = name_len + prefix_len;
3967 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3968 strcpy(trial_name_str, prefix);
3969 strcat(trial_name_str, name_str);
3970 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3971 if (trial_name == NULL) {
3972 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3973 }
3974 method = k()->lookup_method(trial_name, signature);
3975 if (method == NULL) {
3976 continue; // signature doesn't match, try the next prefix
3977 }
3978 if (method->is_native()) {
3979 method->set_is_prefixed_native();
3980 return method; // wahoo, we found a prefixed version of the method, return it
3981 }
3982 // found as non-native, so prefix is good, add it, probably just need more prefixes
3983 name_len = trial_len;
3984 name_str = trial_name_str;
3985 }
3986 #endif // INCLUDE_JVMTI
3987 return NULL; // not found
3988 }
3989
3990 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3991 Method* method = k()->lookup_method(name, signature);
3992 if (method == NULL) {
3993 ResourceMark rm;
3994 stringStream st;
3995 st.print("Method %s name or signature does not match",
3996 Method::name_and_sig_as_C_string(k(), name, signature));
3997 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3998 }
3999 if (!method->is_native()) {
4000 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
4001 method = find_prefixed_native(k, name, signature, THREAD);
4002 if (method == NULL) {
4003 ResourceMark rm;
4004 stringStream st;
4005 st.print("Method %s is not declared as native",
4006 Method::name_and_sig_as_C_string(k(), name, signature));
4007 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4008 }
4009 }
4010
4011 if (entry != NULL) {
4012 method->set_native_function(entry,
4013 Method::native_bind_event_is_interesting);
4014 } else {
4015 method->clear_native_function();
4016 }
4017 if (PrintJNIResolving) {
4018 ResourceMark rm(THREAD);
4019 tty->print_cr("[Registering JNI native method %s.%s]",
4020 method->method_holder()->external_name(),
4021 method->name()->as_C_string());
4022 }
4023 return true;
4024 }
4025
4026 #ifndef USDT2
4027 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4028 #else /* USDT2 */
4029 DT_RETURN_MARK_DECL(RegisterNatives, jint
4030 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4031 #endif /* USDT2 */
4032
4033 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4034 const JNINativeMethod *methods,
4035 jint nMethods))
4036 JNIWrapper("RegisterNatives");
4037 #ifndef USDT2
4038 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4039 #else /* USDT2 */
4040 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4041 env, clazz, (void *) methods, nMethods);
4042 #endif /* USDT2 */
4043 jint ret = 0;
4044 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4045
4046 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4047
4048 for (int index = 0; index < nMethods; index++) {
4049 const char* meth_name = methods[index].name;
4050 const char* meth_sig = methods[index].signature;
4051 int meth_name_len = (int)strlen(meth_name);
4052
4053 // The class should have been loaded (we have an instance of the class
4054 // passed in) so the method and signature should already be in the symbol
4055 // table. If they're not there, the method doesn't exist.
4056 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4057 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4058
4059 if (name == NULL || signature == NULL) {
4060 ResourceMark rm;
4061 stringStream st;
4062 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4063 // Must return negative value on failure
4064 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4065 }
4066
4067 bool res = register_native(h_k, name, signature,
4068 (address) methods[index].fnPtr, THREAD);
4069 if (!res) {
4070 ret = -1;
4071 break;
4072 }
4073 }
4074 return ret;
4075 JNI_END
4076
4077
4078 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4079 JNIWrapper("UnregisterNatives");
4080 #ifndef USDT2
4081 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4082 #else /* USDT2 */
4083 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4084 env, clazz);
4085 #endif /* USDT2 */
4086 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4087 //%note jni_2
4088 if (k->oop_is_instance()) {
4089 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4090 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4091 if (m->is_native()) {
4092 m->clear_native_function();
4093 m->set_signature_handler(NULL);
4094 }
4095 }
4096 }
4097 #ifndef USDT2
4098 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4099 #else /* USDT2 */
4100 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4101 0);
4102 #endif /* USDT2 */
4103 return 0;
4104 JNI_END
4105
4106 //
4107 // Monitor functions
4108 //
4109
4110 #ifndef USDT2
4111 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4112 #else /* USDT2 */
4113 DT_RETURN_MARK_DECL(MonitorEnter, jint
4114 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4115 #endif /* USDT2 */
4116
4117 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4118 #ifndef USDT2
4119 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4120 #else /* USDT2 */
4121 HOTSPOT_JNI_MONITORENTER_ENTRY(
4122 env, jobj);
4123 #endif /* USDT2 */
4124 jint ret = JNI_ERR;
4125 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4126
4127 // If the object is null, we can't do anything with it
4128 if (jobj == NULL) {
4129 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4130 }
4131
4132 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4133 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4134 ret = JNI_OK;
4135 return ret;
4136 JNI_END
4137
4138 #ifndef USDT2
4139 DT_RETURN_MARK_DECL(MonitorExit, jint);
4140 #else /* USDT2 */
4141 DT_RETURN_MARK_DECL(MonitorExit, jint
4142 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4143 #endif /* USDT2 */
4144
4145 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4146 #ifndef USDT2
4147 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4148 #else /* USDT2 */
4149 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4150 env, jobj);
4151 #endif /* USDT2 */
4152 jint ret = JNI_ERR;
4153 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4154
4155 // Don't do anything with a null object
4156 if (jobj == NULL) {
4157 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4158 }
4159
4160 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4161 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4162
4163 ret = JNI_OK;
4164 return ret;
4165 JNI_END
4166
4167 //
4168 // Extensions
4169 //
4170
4171 #ifndef USDT2
4172 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4173 #else /* USDT2 */
4174 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4175 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4176 #endif /* USDT2 */
4177
4178 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4179 JNIWrapper("GetStringRegion");
4180 #ifndef USDT2
4181 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4182 #else /* USDT2 */
4183 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4184 env, string, start, len, buf);
4185 #endif /* USDT2 */
4186 DT_VOID_RETURN_MARK(GetStringRegion);
4187 oop s = JNIHandles::resolve_non_null(string);
4188 int s_len = java_lang_String::length(s);
4189 if (start < 0 || len < 0 || start + len > s_len) {
4190 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4191 } else {
4192 if (len > 0) {
4193 int s_offset = java_lang_String::offset(s);
4194 typeArrayOop s_value = java_lang_String::value(s);
4195 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4196 }
4197 }
4198 JNI_END
4199
4200 #ifndef USDT2
4201 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4202 #else /* USDT2 */
4203 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4204 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4205 #endif /* USDT2 */
4206
4207 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4208 JNIWrapper("GetStringUTFRegion");
4209 #ifndef USDT2
4210 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4211 #else /* USDT2 */
4212 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4213 env, string, start, len, buf);
4214 #endif /* USDT2 */
4215 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4216 oop s = JNIHandles::resolve_non_null(string);
4217 int s_len = java_lang_String::length(s);
4218 if (start < 0 || len < 0 || start + len > s_len) {
4219 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4220 } else {
4221 //%note jni_7
4222 if (len > 0) {
4223 ResourceMark rm(THREAD);
4224 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4225 int utf_len = (int)strlen(utf_region);
4226 memcpy(buf, utf_region, utf_len);
4227 buf[utf_len] = 0;
4228 } else {
4229 // JDK null-terminates the buffer even in len is zero
4230 if (buf != NULL) {
4231 buf[0] = 0;
4232 }
4233 }
4234 }
4235 JNI_END
4236
4237
4238 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4239 JNIWrapper("GetPrimitiveArrayCritical");
4240 #ifndef USDT2
4241 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4242 #else /* USDT2 */
4243 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4244 env, array, (uintptr_t *) isCopy);
4245 #endif /* USDT2 */
4246 GC_locker::lock_critical(thread);
4247 if (isCopy != NULL) {
4248 *isCopy = JNI_FALSE;
4249 }
4250 oop a = JNIHandles::resolve_non_null(array);
4251 assert(a->is_array(), "just checking");
4252 BasicType type;
4253 if (a->is_objArray()) {
4254 type = T_OBJECT;
4255 } else {
4256 type = TypeArrayKlass::cast(a->klass())->element_type();
4257 }
4258 void* ret = arrayOop(a)->base(type);
4259 #ifndef USDT2
4260 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4261 #else /* USDT2 */
4262 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4263 ret);
4264 #endif /* USDT2 */
4265 return ret;
4266 JNI_END
4267
4268
4269 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4270 JNIWrapper("ReleasePrimitiveArrayCritical");
4271 #ifndef USDT2
4272 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4273 #else /* USDT2 */
4274 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4275 env, array, carray, mode);
4276 #endif /* USDT2 */
4277 // The array, carray and mode arguments are ignored
4278 GC_locker::unlock_critical(thread);
4279 #ifndef USDT2
4280 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4281 #else /* USDT2 */
4282 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4283 );
4284 #endif /* USDT2 */
4285 JNI_END
4286
4287
4288 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4289 JNIWrapper("GetStringCritical");
4290 #ifndef USDT2
4291 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4292 #else /* USDT2 */
4293 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4294 env, string, (uintptr_t *) isCopy);
4295 #endif /* USDT2 */
4296 GC_locker::lock_critical(thread);
4297 if (isCopy != NULL) {
4298 *isCopy = JNI_FALSE;
4299 }
4300 oop s = JNIHandles::resolve_non_null(string);
4301 int s_len = java_lang_String::length(s);
4302 typeArrayOop s_value = java_lang_String::value(s);
4303 int s_offset = java_lang_String::offset(s);
4304 const jchar* ret;
4305 if (s_len > 0) {
4306 ret = s_value->char_at_addr(s_offset);
4307 } else {
4308 ret = (jchar*) s_value->base(T_CHAR);
4309 }
4310 #ifndef USDT2
4311 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4312 #else /* USDT2 */
4313 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4314 (uint16_t *) ret);
4315 #endif /* USDT2 */
4316 return ret;
4317 JNI_END
4318
4319
4320 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4321 JNIWrapper("ReleaseStringCritical");
4322 #ifndef USDT2
4323 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4324 #else /* USDT2 */
4325 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4326 env, str, (uint16_t *) chars);
4327 #endif /* USDT2 */
4328 // The str and chars arguments are ignored
4329 GC_locker::unlock_critical(thread);
4330 #ifndef USDT2
4331 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4332 #else /* USDT2 */
4333 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4334 );
4335 #endif /* USDT2 */
4336 JNI_END
4337
4338
4339 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4340 JNIWrapper("jni_NewWeakGlobalRef");
4341 #ifndef USDT2
4342 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4343 #else /* USDT2 */
4344 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4345 env, ref);
4346 #endif /* USDT2 */
4347 Handle ref_handle(thread, JNIHandles::resolve(ref));
4348 jweak ret = JNIHandles::make_weak_global(ref_handle);
4349 #ifndef USDT2
4350 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4351 #else /* USDT2 */
4352 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4353 ret);
4354 #endif /* USDT2 */
4355 return ret;
4356 JNI_END
4357
4358 // Must be JNI_ENTRY (with HandleMark)
4359 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4360 JNIWrapper("jni_DeleteWeakGlobalRef");
4361 #ifndef USDT2
4362 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4363 #else /* USDT2 */
4364 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4365 env, ref);
4366 #endif /* USDT2 */
4367 JNIHandles::destroy_weak_global(ref);
4368 #ifndef USDT2
4369 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4370 #else /* USDT2 */
4371 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4372 );
4373 #endif /* USDT2 */
4374 JNI_END
4375
4376
4377 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4378 JNIWrapper("jni_ExceptionCheck");
4379 #ifndef USDT2
4380 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4381 #else /* USDT2 */
4382 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4383 env);
4384 #endif /* USDT2 */
4385 jni_check_async_exceptions(thread);
4386 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4387 #ifndef USDT2
4388 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4389 #else /* USDT2 */
4390 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4391 ret);
4392 #endif /* USDT2 */
4393 return ret;
4394 JNI_END
4395
4396
4397 // Initialization state for three routines below relating to
4398 // java.nio.DirectBuffers
4399 static jint directBufferSupportInitializeStarted = 0;
4400 static volatile jint directBufferSupportInitializeEnded = 0;
4401 static volatile jint directBufferSupportInitializeFailed = 0;
4402 static jclass bufferClass = NULL;
4403 static jclass directBufferClass = NULL;
4404 static jclass directByteBufferClass = NULL;
4405 static jmethodID directByteBufferConstructor = NULL;
4406 static jfieldID directBufferAddressField = NULL;
4407 static jfieldID bufferCapacityField = NULL;
4408
4409 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4410 Handle loader; // null (bootstrap) loader
4411 Handle protection_domain; // null protection domain
4412
4413 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4414 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4415
4416 if (TraceClassResolution && result != NULL) {
4417 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4418 }
4419 return result;
4420 }
4421
4422 // These lookups are done with the NULL (bootstrap) ClassLoader to
4423 // circumvent any security checks that would be done by jni_FindClass.
4424 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4425 {
4426 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4427 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4428 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4429 return true;
4430 }
4431 JNI_END
4432
4433
4434 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4435 if (directBufferSupportInitializeFailed) {
4436 return false;
4437 }
4438
4439 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4440 if (!lookupDirectBufferClasses(env)) {
4441 directBufferSupportInitializeFailed = 1;
4442 return false;
4443 }
4444
4445 // Make global references for these
4446 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4447 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4448 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4449
4450 // Get needed field and method IDs
4451 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4452 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4453 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4454
4455 if ((directByteBufferConstructor == NULL) ||
4456 (directBufferAddressField == NULL) ||
4457 (bufferCapacityField == NULL)) {
4458 directBufferSupportInitializeFailed = 1;
4459 return false;
4460 }
4461
4462 directBufferSupportInitializeEnded = 1;
4463 } else {
4464 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4465 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4466 // os::sleep which requires the VM state transition. On other platforms, it
4467 // is not necessary. The following call to change the VM state is purposely
4468 // put inside the loop to avoid potential deadlock when multiple threads
4469 // try to call this method. See 6791815 for more details.
4470 ThreadInVMfromNative tivn(thread);
4471 os::yield_all();
4472 }
4473 }
4474
4475 return !directBufferSupportInitializeFailed;
4476 }
4477
4478 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4479 {
4480 // thread_from_jni_environment() will block if VM is gone.
4481 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4482
4483 JNIWrapper("jni_NewDirectByteBuffer");
4484 #ifndef USDT2
4485 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4486 #else /* USDT2 */
4487 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4488 env, address, capacity);
4489 #endif /* USDT2 */
4490
4491 if (!directBufferSupportInitializeEnded) {
4492 if (!initializeDirectBufferSupport(env, thread)) {
4493 #ifndef USDT2
4494 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4495 #else /* USDT2 */
4496 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4497 NULL);
4498 #endif /* USDT2 */
4499 return NULL;
4500 }
4501 }
4502
4503 // Being paranoid about accidental sign extension on address
4504 jlong addr = (jlong) ((uintptr_t) address);
4505 // NOTE that package-private DirectByteBuffer constructor currently
4506 // takes int capacity
4507 jint cap = (jint) capacity;
4508 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4509 #ifndef USDT2
4510 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4511 #else /* USDT2 */
4512 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4513 ret);
4514 #endif /* USDT2 */
4515 return ret;
4516 }
4517
4518 #ifndef USDT2
4519 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4520 #else /* USDT2 */
4521 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4522 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4523 #endif /* USDT2 */
4524
4525 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4526 {
4527 // thread_from_jni_environment() will block if VM is gone.
4528 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4529
4530 JNIWrapper("jni_GetDirectBufferAddress");
4531 #ifndef USDT2
4532 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4533 #else /* USDT2 */
4534 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4535 env, buf);
4536 #endif /* USDT2 */
4537 void* ret = NULL;
4538 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4539
4540 if (!directBufferSupportInitializeEnded) {
4541 if (!initializeDirectBufferSupport(env, thread)) {
4542 return 0;
4543 }
4544 }
4545
4546 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4547 return 0;
4548 }
4549
4550 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4551 return ret;
4552 }
4553
4554 #ifndef USDT2
4555 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4556 #else /* USDT2 */
4557 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4558 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4559 #endif /* USDT2 */
4560
4561 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4562 {
4563 // thread_from_jni_environment() will block if VM is gone.
4564 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4565
4566 JNIWrapper("jni_GetDirectBufferCapacity");
4567 #ifndef USDT2
4568 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4569 #else /* USDT2 */
4570 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4571 env, buf);
4572 #endif /* USDT2 */
4573 jlong ret = -1;
4574 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4575
4576 if (!directBufferSupportInitializeEnded) {
4577 if (!initializeDirectBufferSupport(env, thread)) {
4578 ret = 0;
4579 return ret;
4580 }
4581 }
4582
4583 if (buf == NULL) {
4584 return -1;
4585 }
4586
4587 if (!env->IsInstanceOf(buf, directBufferClass)) {
4588 return -1;
4589 }
4590
4591 // NOTE that capacity is currently an int in the implementation
4592 ret = env->GetIntField(buf, bufferCapacityField);
4593 return ret;
4594 }
4595
4596
4597 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4598 JNIWrapper("GetVersion");
4599 #ifndef USDT2
4600 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4601 #else /* USDT2 */
4602 HOTSPOT_JNI_GETVERSION_ENTRY(
4603 env);
4604 #endif /* USDT2 */
4605 #ifndef USDT2
4606 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4607 #else /* USDT2 */
4608 HOTSPOT_JNI_GETVERSION_RETURN(
4609 CurrentVersion);
4610 #endif /* USDT2 */
4611 return CurrentVersion;
4612 JNI_END
4613
4614 extern struct JavaVM_ main_vm;
4615
4616 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4617 JNIWrapper("jni_GetJavaVM");
4618 #ifndef USDT2
4619 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4620 #else /* USDT2 */
4621 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4622 env, (void **) vm);
4623 #endif /* USDT2 */
4624 *vm = (JavaVM *)(&main_vm);
4625 #ifndef USDT2
4626 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4627 #else /* USDT2 */
4628 HOTSPOT_JNI_GETJAVAVM_RETURN(
4629 JNI_OK);
4630 #endif /* USDT2 */
4631 return JNI_OK;
4632 JNI_END
4633
4634 // Structure containing all jni functions
4635 struct JNINativeInterface_ jni_NativeInterface = {
4636 NULL,
4637 NULL,
4638 NULL,
4639
4640 NULL,
4641
4642 jni_GetVersion,
4643
4644 jni_DefineClass,
4645 jni_FindClass,
4646
4647 jni_FromReflectedMethod,
4648 jni_FromReflectedField,
4649
4650 jni_ToReflectedMethod,
4651
4652 jni_GetSuperclass,
4653 jni_IsAssignableFrom,
4654
4655 jni_ToReflectedField,
4656
4657 jni_Throw,
4658 jni_ThrowNew,
4659 jni_ExceptionOccurred,
4660 jni_ExceptionDescribe,
4661 jni_ExceptionClear,
4662 jni_FatalError,
4663
4664 jni_PushLocalFrame,
4665 jni_PopLocalFrame,
4666
4667 jni_NewGlobalRef,
4668 jni_DeleteGlobalRef,
4669 jni_DeleteLocalRef,
4670 jni_IsSameObject,
4671
4672 jni_NewLocalRef,
4673 jni_EnsureLocalCapacity,
4674
4675 jni_AllocObject,
4676 jni_NewObject,
4677 jni_NewObjectV,
4678 jni_NewObjectA,
4679
4680 jni_GetObjectClass,
4681 jni_IsInstanceOf,
4682
4683 jni_GetMethodID,
4684
4685 jni_CallObjectMethod,
4686 jni_CallObjectMethodV,
4687 jni_CallObjectMethodA,
4688 jni_CallBooleanMethod,
4689 jni_CallBooleanMethodV,
4690 jni_CallBooleanMethodA,
4691 jni_CallByteMethod,
4692 jni_CallByteMethodV,
4693 jni_CallByteMethodA,
4694 jni_CallCharMethod,
4695 jni_CallCharMethodV,
4696 jni_CallCharMethodA,
4697 jni_CallShortMethod,
4698 jni_CallShortMethodV,
4699 jni_CallShortMethodA,
4700 jni_CallIntMethod,
4701 jni_CallIntMethodV,
4702 jni_CallIntMethodA,
4703 jni_CallLongMethod,
4704 jni_CallLongMethodV,
4705 jni_CallLongMethodA,
4706 jni_CallFloatMethod,
4707 jni_CallFloatMethodV,
4708 jni_CallFloatMethodA,
4709 jni_CallDoubleMethod,
4710 jni_CallDoubleMethodV,
4711 jni_CallDoubleMethodA,
4712 jni_CallVoidMethod,
4713 jni_CallVoidMethodV,
4714 jni_CallVoidMethodA,
4715
4716 jni_CallNonvirtualObjectMethod,
4717 jni_CallNonvirtualObjectMethodV,
4718 jni_CallNonvirtualObjectMethodA,
4719 jni_CallNonvirtualBooleanMethod,
4720 jni_CallNonvirtualBooleanMethodV,
4721 jni_CallNonvirtualBooleanMethodA,
4722 jni_CallNonvirtualByteMethod,
4723 jni_CallNonvirtualByteMethodV,
4724 jni_CallNonvirtualByteMethodA,
4725 jni_CallNonvirtualCharMethod,
4726 jni_CallNonvirtualCharMethodV,
4727 jni_CallNonvirtualCharMethodA,
4728 jni_CallNonvirtualShortMethod,
4729 jni_CallNonvirtualShortMethodV,
4730 jni_CallNonvirtualShortMethodA,
4731 jni_CallNonvirtualIntMethod,
4732 jni_CallNonvirtualIntMethodV,
4733 jni_CallNonvirtualIntMethodA,
4734 jni_CallNonvirtualLongMethod,
4735 jni_CallNonvirtualLongMethodV,
4736 jni_CallNonvirtualLongMethodA,
4737 jni_CallNonvirtualFloatMethod,
4738 jni_CallNonvirtualFloatMethodV,
4739 jni_CallNonvirtualFloatMethodA,
4740 jni_CallNonvirtualDoubleMethod,
4741 jni_CallNonvirtualDoubleMethodV,
4742 jni_CallNonvirtualDoubleMethodA,
4743 jni_CallNonvirtualVoidMethod,
4744 jni_CallNonvirtualVoidMethodV,
4745 jni_CallNonvirtualVoidMethodA,
4746
4747 jni_GetFieldID,
4748
4749 jni_GetObjectField,
4750 jni_GetBooleanField,
4751 jni_GetByteField,
4752 jni_GetCharField,
4753 jni_GetShortField,
4754 jni_GetIntField,
4755 jni_GetLongField,
4756 jni_GetFloatField,
4757 jni_GetDoubleField,
4758
4759 jni_SetObjectField,
4760 jni_SetBooleanField,
4761 jni_SetByteField,
4762 jni_SetCharField,
4763 jni_SetShortField,
4764 jni_SetIntField,
4765 jni_SetLongField,
4766 jni_SetFloatField,
4767 jni_SetDoubleField,
4768
4769 jni_GetStaticMethodID,
4770
4771 jni_CallStaticObjectMethod,
4772 jni_CallStaticObjectMethodV,
4773 jni_CallStaticObjectMethodA,
4774 jni_CallStaticBooleanMethod,
4775 jni_CallStaticBooleanMethodV,
4776 jni_CallStaticBooleanMethodA,
4777 jni_CallStaticByteMethod,
4778 jni_CallStaticByteMethodV,
4779 jni_CallStaticByteMethodA,
4780 jni_CallStaticCharMethod,
4781 jni_CallStaticCharMethodV,
4782 jni_CallStaticCharMethodA,
4783 jni_CallStaticShortMethod,
4784 jni_CallStaticShortMethodV,
4785 jni_CallStaticShortMethodA,
4786 jni_CallStaticIntMethod,
4787 jni_CallStaticIntMethodV,
4788 jni_CallStaticIntMethodA,
4789 jni_CallStaticLongMethod,
4790 jni_CallStaticLongMethodV,
4791 jni_CallStaticLongMethodA,
4792 jni_CallStaticFloatMethod,
4793 jni_CallStaticFloatMethodV,
4794 jni_CallStaticFloatMethodA,
4795 jni_CallStaticDoubleMethod,
4796 jni_CallStaticDoubleMethodV,
4797 jni_CallStaticDoubleMethodA,
4798 jni_CallStaticVoidMethod,
4799 jni_CallStaticVoidMethodV,
4800 jni_CallStaticVoidMethodA,
4801
4802 jni_GetStaticFieldID,
4803
4804 jni_GetStaticObjectField,
4805 jni_GetStaticBooleanField,
4806 jni_GetStaticByteField,
4807 jni_GetStaticCharField,
4808 jni_GetStaticShortField,
4809 jni_GetStaticIntField,
4810 jni_GetStaticLongField,
4811 jni_GetStaticFloatField,
4812 jni_GetStaticDoubleField,
4813
4814 jni_SetStaticObjectField,
4815 jni_SetStaticBooleanField,
4816 jni_SetStaticByteField,
4817 jni_SetStaticCharField,
4818 jni_SetStaticShortField,
4819 jni_SetStaticIntField,
4820 jni_SetStaticLongField,
4821 jni_SetStaticFloatField,
4822 jni_SetStaticDoubleField,
4823
4824 jni_NewString,
4825 jni_GetStringLength,
4826 jni_GetStringChars,
4827 jni_ReleaseStringChars,
4828
4829 jni_NewStringUTF,
4830 jni_GetStringUTFLength,
4831 jni_GetStringUTFChars,
4832 jni_ReleaseStringUTFChars,
4833
4834 jni_GetArrayLength,
4835
4836 jni_NewObjectArray,
4837 jni_GetObjectArrayElement,
4838 jni_SetObjectArrayElement,
4839
4840 jni_NewBooleanArray,
4841 jni_NewByteArray,
4842 jni_NewCharArray,
4843 jni_NewShortArray,
4844 jni_NewIntArray,
4845 jni_NewLongArray,
4846 jni_NewFloatArray,
4847 jni_NewDoubleArray,
4848
4849 jni_GetBooleanArrayElements,
4850 jni_GetByteArrayElements,
4851 jni_GetCharArrayElements,
4852 jni_GetShortArrayElements,
4853 jni_GetIntArrayElements,
4854 jni_GetLongArrayElements,
4855 jni_GetFloatArrayElements,
4856 jni_GetDoubleArrayElements,
4857
4858 jni_ReleaseBooleanArrayElements,
4859 jni_ReleaseByteArrayElements,
4860 jni_ReleaseCharArrayElements,
4861 jni_ReleaseShortArrayElements,
4862 jni_ReleaseIntArrayElements,
4863 jni_ReleaseLongArrayElements,
4864 jni_ReleaseFloatArrayElements,
4865 jni_ReleaseDoubleArrayElements,
4866
4867 jni_GetBooleanArrayRegion,
4868 jni_GetByteArrayRegion,
4869 jni_GetCharArrayRegion,
4870 jni_GetShortArrayRegion,
4871 jni_GetIntArrayRegion,
4872 jni_GetLongArrayRegion,
4873 jni_GetFloatArrayRegion,
4874 jni_GetDoubleArrayRegion,
4875
4876 jni_SetBooleanArrayRegion,
4877 jni_SetByteArrayRegion,
4878 jni_SetCharArrayRegion,
4879 jni_SetShortArrayRegion,
4880 jni_SetIntArrayRegion,
4881 jni_SetLongArrayRegion,
4882 jni_SetFloatArrayRegion,
4883 jni_SetDoubleArrayRegion,
4884
4885 jni_RegisterNatives,
4886 jni_UnregisterNatives,
4887
4888 jni_MonitorEnter,
4889 jni_MonitorExit,
4890
4891 jni_GetJavaVM,
4892
4893 jni_GetStringRegion,
4894 jni_GetStringUTFRegion,
4895
4896 jni_GetPrimitiveArrayCritical,
4897 jni_ReleasePrimitiveArrayCritical,
4898
4899 jni_GetStringCritical,
4900 jni_ReleaseStringCritical,
4901
4902 jni_NewWeakGlobalRef,
4903 jni_DeleteWeakGlobalRef,
4904
4905 jni_ExceptionCheck,
4906
4907 jni_NewDirectByteBuffer,
4908 jni_GetDirectBufferAddress,
4909 jni_GetDirectBufferCapacity,
4910
4911 // New 1_6 features
4912
4913 jni_GetObjectRefType
4914 };
4915
4916
4917 // For jvmti use to modify jni function table.
4918 // Java threads in native contiues to run until it is transitioned
4919 // to VM at safepoint. Before the transition or before it is blocked
4920 // for safepoint it may access jni function table. VM could crash if
4921 // any java thread access the jni function table in the middle of memcpy.
4922 // To avoid this each function pointers are copied automically.
4923 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4924 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4925 intptr_t *a = (intptr_t *) jni_functions();
4926 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4927 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4928 Atomic::store_ptr(*b++, a++);
4929 }
4930 }
4931
4932 void quicken_jni_functions() {
4933 // Replace Get<Primitive>Field with fast versions
4934 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4935 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4936 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4937 // windows x86 currently needs SEH wrapper and the gain of the fast
4938 // versions currently isn't certain for server vm on uniprocessor.
4939 && os::is_MP()
4940 #endif
4941 ) {
4942 address func;
4943 func = JNI_FastGetField::generate_fast_get_boolean_field();
4944 if (func != (address)-1) {
4945 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4946 }
4947 func = JNI_FastGetField::generate_fast_get_byte_field();
4948 if (func != (address)-1) {
4949 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4950 }
4951 func = JNI_FastGetField::generate_fast_get_char_field();
4952 if (func != (address)-1) {
4953 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4954 }
4955 func = JNI_FastGetField::generate_fast_get_short_field();
4956 if (func != (address)-1) {
4957 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4958 }
4959 func = JNI_FastGetField::generate_fast_get_int_field();
4960 if (func != (address)-1) {
4961 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4962 }
4963 func = JNI_FastGetField::generate_fast_get_long_field();
4964 if (func != (address)-1) {
4965 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4966 }
4967 func = JNI_FastGetField::generate_fast_get_float_field();
4968 if (func != (address)-1) {
4969 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4970 }
4971 func = JNI_FastGetField::generate_fast_get_double_field();
4972 if (func != (address)-1) {
4973 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4974 }
4975 }
4976 }
4977
4978 // Returns the function structure
4979 struct JNINativeInterface_* jni_functions() {
4980 #if INCLUDE_JNI_CHECK
4981 if (CheckJNICalls) return jni_functions_check();
4982 #endif // INCLUDE_JNI_CHECK
4983 return &jni_NativeInterface;
4984 }
4985
4986 // Returns the function structure
4987 struct JNINativeInterface_* jni_functions_nocheck() {
4988 return &jni_NativeInterface;
4989 }
4990
4991
4992 // Invocation API
4993
4994
4995 // Forward declaration
4996 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4997
4998 // Global invocation API vars
4999 volatile jint vm_created = 0;
5000 // Indicate whether it is safe to recreate VM
5001 volatile jint safe_to_recreate_vm = 1;
5002 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5003
5004
5005 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
5006 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5007
5008 #ifndef USDT2
5009 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5010 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5011 #else /* USDT2 */
5012 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5013 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5014 #endif /* USDT2 */
5015
5016 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5017 #ifndef USDT2
5018 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5019 #else /* USDT2 */
5020 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5021 args_);
5022 #endif /* USDT2 */
5023 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5024 jint ret = JNI_ERR;
5025 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5026
5027 if (Threads::is_supported_jni_version(args->version)) {
5028 ret = JNI_OK;
5029 }
5030 // 1.1 style no longer supported in hotspot.
5031 // According the JNI spec, we should update args->version on return.
5032 // We also use the structure to communicate with launcher about default
5033 // stack size.
5034 if (args->version == JNI_VERSION_1_1) {
5035 args->version = JNI_VERSION_1_2;
5036 // javaStackSize is int in arguments structure
5037 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5038 args->javaStackSize = (jint)(ThreadStackSize * K);
5039 }
5040 return ret;
5041 }
5042
5043 #ifndef PRODUCT
5044
5045 #include "gc_interface/collectedHeap.hpp"
5046 #include "utilities/quickSort.hpp"
5047
5048 #define run_unit_test(unit_test_function_call) \
5049 tty->print_cr("Running test: " #unit_test_function_call); \
5050 unit_test_function_call
5051
5052 void execute_internal_vm_tests() {
5053 if (ExecuteInternalVMTests) {
5054 tty->print_cr("Running internal VM tests");
5055 run_unit_test(arrayOopDesc::test_max_array_length());
5056 run_unit_test(CollectedHeap::test_is_in());
5057 run_unit_test(QuickSort::test_quick_sort());
5058 run_unit_test(AltHashing::test_alt_hash());
5059 tty->print_cr("All internal VM tests passed");
5060 }
5061 }
5062
5063 #undef run_unit_test
5064
5065 #endif
5066
5067 #ifndef USDT2
5068 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5069 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5070 #else /* USDT2 */
5071 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5072 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5073 #endif /* USDT2 */
5074
5075 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5076 #ifndef USDT2
5077 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5078 #else /* USDT2 */
5079 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5080 (void **) vm, penv, args);
5081 #endif /* USDT2 */
5082
5083 jint result = JNI_ERR;
5084 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5085
5086 // We're about to use Atomic::xchg for synchronization. Some Zero
5087 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5088 // but __sync_lock_test_and_set is not guaranteed to do what we want
5089 // on all architectures. So we check it works before relying on it.
5090 #if defined(ZERO) && defined(ASSERT)
5091 {
5092 jint a = 0xcafebabe;
5093 jint b = Atomic::xchg(0xdeadbeef, &a);
5094 void *c = &a;
5095 void *d = Atomic::xchg_ptr(&b, &c);
5096 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5097 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5098 }
5099 #endif // ZERO && ASSERT
5100
5101 // At the moment it's only possible to have one Java VM,
5102 // since some of the runtime state is in global variables.
5103
5104 // We cannot use our mutex locks here, since they only work on
5105 // Threads. We do an atomic compare and exchange to ensure only
5106 // one thread can call this method at a time
5107
5108 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5109 // the add/dec implementations are dependent on whether we are running
5110 // on a multiprocessor, and at this stage of initialization the os::is_MP
5111 // function used to determine this will always return false. Atomic::xchg
5112 // does not have this problem.
5113 if (Atomic::xchg(1, &vm_created) == 1) {
5114 return JNI_ERR; // already created, or create attempt in progress
5115 }
5116 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5117 return JNI_ERR; // someone tried and failed and retry not allowed.
5118 }
5119
5120 assert(vm_created == 1, "vm_created is true during the creation");
5121
5122 /**
5123 * Certain errors during initialization are recoverable and do not
5124 * prevent this method from being called again at a later time
5125 * (perhaps with different arguments). However, at a certain
5126 * point during initialization if an error occurs we cannot allow
5127 * this function to be called again (or it will crash). In those
5128 * situations, the 'canTryAgain' flag is set to false, which atomically
5129 * sets safe_to_recreate_vm to 1, such that any new call to
5130 * JNI_CreateJavaVM will immediately fail using the above logic.
5131 */
5132 bool can_try_again = true;
5133
5134 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5135 if (result == JNI_OK) {
5136 JavaThread *thread = JavaThread::current();
5137 /* thread is thread_in_vm here */
5138 *vm = (JavaVM *)(&main_vm);
5139 *(JNIEnv**)penv = thread->jni_environment();
5140
5141 // Tracks the time application was running before GC
5142 RuntimeService::record_application_start();
5143
5144 // Notify JVMTI
5145 if (JvmtiExport::should_post_thread_life()) {
5146 JvmtiExport::post_thread_start(thread);
5147 }
5148
5149 EVENT_BEGIN(TraceEventThreadStart, event);
5150 EVENT_COMMIT(event,
5151 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5152
5153 // Check if we should compile all classes on bootclasspath
5154 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
5155 NOT_PRODUCT(if (ReplayCompiles) ciReplay::replay(thread);)
5156 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5157 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5158 } else {
5159 if (can_try_again) {
5160 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5161 safe_to_recreate_vm = 1;
5162 }
5163
5164 // Creation failed. We must reset vm_created
5165 *vm = 0;
5166 *(JNIEnv**)penv = 0;
5167 // reset vm_created last to avoid race condition. Use OrderAccess to
5168 // control both compiler and architectural-based reordering.
5169 OrderAccess::release_store(&vm_created, 0);
5170 }
5171
5172 NOT_PRODUCT(test_error_handler(ErrorHandlerTest));
5173 NOT_PRODUCT(execute_internal_vm_tests());
5174 return result;
5175 }
5176
5177 #ifndef USDT2
5178 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5179 JavaVM**, jsize, jsize*);
5180 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5181 #endif /* !USDT2 */
5182
5183 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5184 // See bug 4367188, the wrapper can sometimes cause VM crashes
5185 // JNIWrapper("GetCreatedJavaVMs");
5186 #ifndef USDT2
5187 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5188 vm_buf, bufLen, numVMs);
5189 #else /* USDT2 */
5190 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5191 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5192 #endif /* USDT2 */
5193 if (vm_created) {
5194 if (numVMs != NULL) *numVMs = 1;
5195 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5196 } else {
5197 if (numVMs != NULL) *numVMs = 0;
5198 }
5199 #ifndef USDT2
5200 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5201 #else /* USDT2 */
5202 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5203 JNI_OK);
5204 #endif /* USDT2 */
5205 return JNI_OK;
5206 }
5207
5208 extern "C" {
5209
5210 #ifndef USDT2
5211 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5212 #else /* USDT2 */
5213 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5214 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5215 #endif /* USDT2 */
5216
5217 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5218 #ifndef USDT2
5219 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5220 #else /* USDT2 */
5221 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5222 vm);
5223 #endif /* USDT2 */
5224 jint res = JNI_ERR;
5225 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5226
5227 if (!vm_created) {
5228 res = JNI_ERR;
5229 return res;
5230 }
5231
5232 JNIWrapper("DestroyJavaVM");
5233 JNIEnv *env;
5234 JavaVMAttachArgs destroyargs;
5235 destroyargs.version = CurrentVersion;
5236 destroyargs.name = (char *)"DestroyJavaVM";
5237 destroyargs.group = NULL;
5238 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5239 if (res != JNI_OK) {
5240 return res;
5241 }
5242
5243 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5244 JavaThread* thread = JavaThread::current();
5245 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5246 if (Threads::destroy_vm()) {
5247 // Should not change thread state, VM is gone
5248 vm_created = false;
5249 res = JNI_OK;
5250 return res;
5251 } else {
5252 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5253 res = JNI_ERR;
5254 return res;
5255 }
5256 }
5257
5258
5259 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5260 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5261
5262 // Check below commented out from JDK1.2fcs as well
5263 /*
5264 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5265 return JNI_EVERSION;
5266 }
5267 */
5268
5269 Thread* t = ThreadLocalStorage::get_thread_slow();
5270 if (t != NULL) {
5271 // If the thread has been attached this operation is a no-op
5272 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5273 return JNI_OK;
5274 }
5275
5276 // Create a thread and mark it as attaching so it will be skipped by the
5277 // ThreadsListEnumerator - see CR 6404306
5278 JavaThread* thread = new JavaThread(true);
5279
5280 // Set correct safepoint info. The thread is going to call into Java when
5281 // initializing the Java level thread object. Hence, the correct state must
5282 // be set in order for the Safepoint code to deal with it correctly.
5283 thread->set_thread_state(_thread_in_vm);
5284 // Must do this before initialize_thread_local_storage
5285 thread->record_stack_base_and_size();
5286
5287 thread->initialize_thread_local_storage();
5288
5289 if (!os::create_attached_thread(thread)) {
5290 delete thread;
5291 return JNI_ERR;
5292 }
5293 // Enable stack overflow checks
5294 thread->create_stack_guard_pages();
5295
5296 thread->initialize_tlab();
5297
5298 thread->cache_global_variables();
5299
5300 // Crucial that we do not have a safepoint check for this thread, since it has
5301 // not been added to the Thread list yet.
5302 { Threads_lock->lock_without_safepoint_check();
5303 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5304 // avoid this thread trying to do a GC before it is added to the thread-list
5305 thread->set_active_handles(JNIHandleBlock::allocate_block());
5306 Threads::add(thread, daemon);
5307 Threads_lock->unlock();
5308 }
5309 // Create thread group and name info from attach arguments
5310 oop group = NULL;
5311 char* thread_name = NULL;
5312 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5313 group = JNIHandles::resolve(args->group);
5314 thread_name = args->name; // may be NULL
5315 }
5316 if (group == NULL) group = Universe::main_thread_group();
5317
5318 // Create Java level thread object and attach it to this thread
5319 bool attach_failed = false;
5320 {
5321 EXCEPTION_MARK;
5322 HandleMark hm(THREAD);
5323 Handle thread_group(THREAD, group);
5324 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5325 if (HAS_PENDING_EXCEPTION) {
5326 CLEAR_PENDING_EXCEPTION;
5327 // cleanup outside the handle mark.
5328 attach_failed = true;
5329 }
5330 }
5331
5332 if (attach_failed) {
5333 // Added missing cleanup
5334 thread->cleanup_failed_attach_current_thread();
5335 return JNI_ERR;
5336 }
5337
5338 // mark the thread as no longer attaching
5339 // this uses a fence to push the change through so we don't have
5340 // to regrab the threads_lock
5341 thread->set_done_attaching_via_jni();
5342
5343 // Set java thread status.
5344 java_lang_Thread::set_thread_status(thread->threadObj(),
5345 java_lang_Thread::RUNNABLE);
5346
5347 // Notify the debugger
5348 if (JvmtiExport::should_post_thread_life()) {
5349 JvmtiExport::post_thread_start(thread);
5350 }
5351
5352 EVENT_BEGIN(TraceEventThreadStart, event);
5353 EVENT_COMMIT(event,
5354 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5355
5356 *(JNIEnv**)penv = thread->jni_environment();
5357
5358 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5359 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5360 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5361 // needed.
5362
5363 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5364
5365 // Perform any platform dependent FPU setup
5366 os::setup_fpu();
5367
5368 return JNI_OK;
5369 }
5370
5371
5372 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5373 #ifndef USDT2
5374 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5375 #else /* USDT2 */
5376 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5377 vm, penv, _args);
5378 #endif /* USDT2 */
5379 if (!vm_created) {
5380 #ifndef USDT2
5381 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5382 #else /* USDT2 */
5383 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5384 (uint32_t) JNI_ERR);
5385 #endif /* USDT2 */
5386 return JNI_ERR;
5387 }
5388
5389 JNIWrapper("AttachCurrentThread");
5390 jint ret = attach_current_thread(vm, penv, _args, false);
5391 #ifndef USDT2
5392 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5393 #else /* USDT2 */
5394 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5395 ret);
5396 #endif /* USDT2 */
5397 return ret;
5398 }
5399
5400
5401 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5402 #ifndef USDT2
5403 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5404 #else /* USDT2 */
5405 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5406 vm);
5407 #endif /* USDT2 */
5408 VM_Exit::block_if_vm_exited();
5409
5410 JNIWrapper("DetachCurrentThread");
5411
5412 // If the thread has been deattacted the operations is a no-op
5413 if (ThreadLocalStorage::thread() == NULL) {
5414 #ifndef USDT2
5415 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5416 #else /* USDT2 */
5417 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5418 JNI_OK);
5419 #endif /* USDT2 */
5420 return JNI_OK;
5421 }
5422
5423 JavaThread* thread = JavaThread::current();
5424 if (thread->has_last_Java_frame()) {
5425 #ifndef USDT2
5426 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5427 #else /* USDT2 */
5428 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5429 (uint32_t) JNI_ERR);
5430 #endif /* USDT2 */
5431 // Can't detach a thread that's running java, that can't work.
5432 return JNI_ERR;
5433 }
5434
5435 // Safepoint support. Have to do call-back to safepoint code, if in the
5436 // middel of a safepoint operation
5437 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5438
5439 // XXX: Note that JavaThread::exit() call below removes the guards on the
5440 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5441 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5442 // of the guards is visible in jni_AttachCurrentThread above,
5443 // the removal of the guards is buried below in JavaThread::exit()
5444 // here. The abstraction should be more symmetrically either exposed
5445 // or hidden (e.g. it could probably be hidden in the same
5446 // (platform-dependent) methods where we do alternate stack
5447 // maintenance work?)
5448 thread->exit(false, JavaThread::jni_detach);
5449 delete thread;
5450
5451 #ifndef USDT2
5452 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5453 #else /* USDT2 */
5454 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5455 JNI_OK);
5456 #endif /* USDT2 */
5457 return JNI_OK;
5458 }
5459
5460 #ifndef USDT2
5461 DT_RETURN_MARK_DECL(GetEnv, jint);
5462 #else /* USDT2 */
5463 DT_RETURN_MARK_DECL(GetEnv, jint
5464 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5465 #endif /* USDT2 */
5466
5467 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5468 #ifndef USDT2
5469 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5470 #else /* USDT2 */
5471 HOTSPOT_JNI_GETENV_ENTRY(
5472 vm, penv, version);
5473 #endif /* USDT2 */
5474 jint ret = JNI_ERR;
5475 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5476
5477 if (!vm_created) {
5478 *penv = NULL;
5479 ret = JNI_EDETACHED;
5480 return ret;
5481 }
5482
5483 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5484 return ret;
5485 }
5486
5487 #ifndef JVMPI_VERSION_1
5488 // need these in order to be polite about older agents
5489 #define JVMPI_VERSION_1 ((jint)0x10000001)
5490 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5491 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5492 #endif // !JVMPI_VERSION_1
5493
5494 Thread* thread = ThreadLocalStorage::thread();
5495 if (thread != NULL && thread->is_Java_thread()) {
5496 if (Threads::is_supported_jni_version_including_1_1(version)) {
5497 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5498 ret = JNI_OK;
5499 return ret;
5500
5501 } else if (version == JVMPI_VERSION_1 ||
5502 version == JVMPI_VERSION_1_1 ||
5503 version == JVMPI_VERSION_1_2) {
5504 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5505 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5506 ret = JNI_EVERSION;
5507 return ret;
5508 } else if (JvmtiExport::is_jvmdi_version(version)) {
5509 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5510 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5511 ret = JNI_EVERSION;
5512 return ret;
5513 } else {
5514 *penv = NULL;
5515 ret = JNI_EVERSION;
5516 return ret;
5517 }
5518 } else {
5519 *penv = NULL;
5520 ret = JNI_EDETACHED;
5521 return ret;
5522 }
5523 }
5524
5525
5526 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5527 #ifndef USDT2
5528 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5529 #else /* USDT2 */
5530 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5531 vm, penv, _args);
5532 #endif /* USDT2 */
5533 if (!vm_created) {
5534 #ifndef USDT2
5535 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5536 #else /* USDT2 */
5537 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5538 (uint32_t) JNI_ERR);
5539 #endif /* USDT2 */
5540 return JNI_ERR;
5541 }
5542
5543 JNIWrapper("AttachCurrentThreadAsDaemon");
5544 jint ret = attach_current_thread(vm, penv, _args, true);
5545 #ifndef USDT2
5546 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5547 #else /* USDT2 */
5548 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5549 ret);
5550 #endif /* USDT2 */
5551 return ret;
5552 }
5553
5554
5555 } // End extern "C"
5556
5557 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5558 NULL,
5559 NULL,
5560 NULL,
5561
5562 jni_DestroyJavaVM,
5563 jni_AttachCurrentThread,
5564 jni_DetachCurrentThread,
5565 jni_GetEnv,
5566 jni_AttachCurrentThreadAsDaemon
5567 };