1 /*
2 * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include "precompiled.hpp"
25 #include "asm/codeBuffer.hpp"
26 #include "classfile/javaClasses.inline.hpp"
27 #include "code/codeCache.hpp"
28 #include "compiler/compileBroker.hpp"
29 #include "compiler/disassembler.hpp"
30 #include "jvmci/jvmciRuntime.hpp"
31 #include "jvmci/jvmciCompilerToVM.hpp"
32 #include "jvmci/jvmciCompiler.hpp"
33 #include "jvmci/jvmciJavaClasses.hpp"
34 #include "jvmci/jvmciEnv.hpp"
35 #include "logging/log.hpp"
36 #include "memory/oopFactory.hpp"
37 #include "oops/oop.inline.hpp"
38 #include "oops/objArrayOop.inline.hpp"
39 #include "prims/jvm.h"
40 #include "runtime/biasedLocking.hpp"
41 #include "runtime/interfaceSupport.hpp"
42 #include "runtime/reflection.hpp"
43 #include "runtime/sharedRuntime.hpp"
44 #include "utilities/debug.hpp"
45 #include "utilities/defaultStream.hpp"
46
47 #if defined(_MSC_VER)
48 #define strtoll _strtoi64
49 #endif
50
51 jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL;
52 bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false;
53 bool JVMCIRuntime::_well_known_classes_initialized = false;
54 int JVMCIRuntime::_trivial_prefixes_count = 0;
55 char** JVMCIRuntime::_trivial_prefixes = NULL;
56 bool JVMCIRuntime::_shutdown_called = false;
57
58 BasicType JVMCIRuntime::kindToBasicType(Handle kind, TRAPS) {
59 if (kind.is_null()) {
60 THROW_(vmSymbols::java_lang_NullPointerException(), T_ILLEGAL);
61 }
62 jchar ch = JavaKind::typeChar(kind);
63 switch(ch) {
64 case 'z': return T_BOOLEAN;
65 case 'b': return T_BYTE;
66 case 's': return T_SHORT;
67 case 'c': return T_CHAR;
68 case 'i': return T_INT;
69 case 'f': return T_FLOAT;
70 case 'j': return T_LONG;
71 case 'd': return T_DOUBLE;
72 case 'a': return T_OBJECT;
73 case '-': return T_ILLEGAL;
74 default:
75 JVMCI_ERROR_(T_ILLEGAL, "unexpected Kind: %c", ch);
76 }
77 }
78
79 // Simple helper to see if the caller of a runtime stub which
80 // entered the VM has been deoptimized
81
82 static bool caller_is_deopted() {
83 JavaThread* thread = JavaThread::current();
84 RegisterMap reg_map(thread, false);
85 frame runtime_frame = thread->last_frame();
86 frame caller_frame = runtime_frame.sender(®_map);
87 assert(caller_frame.is_compiled_frame(), "must be compiled");
88 return caller_frame.is_deoptimized_frame();
89 }
90
91 // Stress deoptimization
92 static void deopt_caller() {
93 if ( !caller_is_deopted()) {
94 JavaThread* thread = JavaThread::current();
95 RegisterMap reg_map(thread, false);
96 frame runtime_frame = thread->last_frame();
97 frame caller_frame = runtime_frame.sender(®_map);
98 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
99 assert(caller_is_deopted(), "Must be deoptimized");
100 }
101 }
102
103 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass))
104 JRT_BLOCK;
105 assert(klass->is_klass(), "not a class");
106 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
107 instanceKlassHandle h(thread, klass);
108 h->check_valid_for_instantiation(true, CHECK);
109 // make sure klass is initialized
110 h->initialize(CHECK);
111 // allocate instance and return via TLS
112 oop obj = h->allocate_instance(CHECK);
113 thread->set_vm_result(obj);
114 JRT_BLOCK_END;
115
116 if (ReduceInitialCardMarks) {
117 new_store_pre_barrier(thread);
118 }
119 JRT_END
120
121 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
122 JRT_BLOCK;
123 // Note: no handle for klass needed since they are not used
124 // anymore after new_objArray() and no GC can happen before.
125 // (This may have to change if this code changes!)
126 assert(array_klass->is_klass(), "not a class");
127 oop obj;
128 if (array_klass->is_typeArray_klass()) {
129 BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type();
130 obj = oopFactory::new_typeArray(elt_type, length, CHECK);
131 } else {
132 Handle holder(THREAD, array_klass->klass_holder()); // keep the klass alive
133 Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass();
134 obj = oopFactory::new_objArray(elem_klass, length, CHECK);
135 }
136 thread->set_vm_result(obj);
137 // This is pretty rare but this runtime patch is stressful to deoptimization
138 // if we deoptimize here so force a deopt to stress the path.
139 if (DeoptimizeALot) {
140 static int deopts = 0;
141 // Alternate between deoptimizing and raising an error (which will also cause a deopt)
142 if (deopts++ % 2 == 0) {
143 ResourceMark rm(THREAD);
144 THROW(vmSymbols::java_lang_OutOfMemoryError());
145 } else {
146 deopt_caller();
147 }
148 }
149 JRT_BLOCK_END;
150
151 if (ReduceInitialCardMarks) {
152 new_store_pre_barrier(thread);
153 }
154 JRT_END
155
156 void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) {
157 // After any safepoint, just before going back to compiled code,
158 // we inform the GC that we will be doing initializing writes to
159 // this object in the future without emitting card-marks, so
160 // GC may take any compensating steps.
161 // NOTE: Keep this code consistent with GraphKit::store_barrier.
162
163 oop new_obj = thread->vm_result();
164 if (new_obj == NULL) return;
165
166 assert(Universe::heap()->can_elide_tlab_store_barriers(),
167 "compiler must check this first");
168 // GC may decide to give back a safer copy of new_obj.
169 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
170 thread->set_vm_result(new_obj);
171 }
172
173 JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
174 assert(klass->is_klass(), "not a class");
175 assert(rank >= 1, "rank must be nonzero");
176 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
177 oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
178 thread->set_vm_result(obj);
179 JRT_END
180
181 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length))
182 oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK);
183 thread->set_vm_result(obj);
184 JRT_END
185
186 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror))
187 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror));
188
189 if (klass == NULL) {
190 ResourceMark rm(THREAD);
191 THROW(vmSymbols::java_lang_InstantiationException());
192 }
193
194 // Create new instance (the receiver)
195 klass->check_valid_for_instantiation(false, CHECK);
196
197 // Make sure klass gets initialized
198 klass->initialize(CHECK);
199
200 oop obj = klass->allocate_instance(CHECK);
201 thread->set_vm_result(obj);
202 JRT_END
203
204 extern void vm_exit(int code);
205
206 // Enter this method from compiled code handler below. This is where we transition
207 // to VM mode. This is done as a helper routine so that the method called directly
208 // from compiled code does not have to transition to VM. This allows the entry
209 // method to see if the nmethod that we have just looked up a handler for has
210 // been deoptimized while we were in the vm. This simplifies the assembly code
211 // cpu directories.
212 //
213 // We are entering here from exception stub (via the entry method below)
214 // If there is a compiled exception handler in this method, we will continue there;
215 // otherwise we will unwind the stack and continue at the caller of top frame method
216 // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to
217 // control the area where we can allow a safepoint. After we exit the safepoint area we can
218 // check to see if the handler we are going to return is now in a nmethod that has
219 // been deoptimized. If that is the case we return the deopt blob
220 // unpack_with_exception entry instead. This makes life for the exception blob easier
221 // because making that same check and diverting is painful from assembly language.
222 JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm))
223 // Reset method handle flag.
224 thread->set_is_method_handle_return(false);
225
226 Handle exception(thread, ex);
227 nm = CodeCache::find_nmethod(pc);
228 assert(nm != NULL, "this is not a compiled method");
229 // Adjust the pc as needed/
230 if (nm->is_deopt_pc(pc)) {
231 RegisterMap map(thread, false);
232 frame exception_frame = thread->last_frame().sender(&map);
233 // if the frame isn't deopted then pc must not correspond to the caller of last_frame
234 assert(exception_frame.is_deoptimized_frame(), "must be deopted");
235 pc = exception_frame.pc();
236 }
237 #ifdef ASSERT
238 assert(exception.not_null(), "NULL exceptions should be handled by throw_exception");
239 assert(exception->is_oop(), "just checking");
240 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError
241 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
242 if (ExitVMOnVerifyError) vm_exit(-1);
243 ShouldNotReachHere();
244 }
245 #endif
246
247 // Check the stack guard pages and reenable them if necessary and there is
248 // enough space on the stack to do so. Use fast exceptions only if the guard
249 // pages are enabled.
250 bool guard_pages_enabled = thread->stack_guards_enabled();
251 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack();
252
253 if (JvmtiExport::can_post_on_exceptions()) {
254 // To ensure correct notification of exception catches and throws
255 // we have to deoptimize here. If we attempted to notify the
256 // catches and throws during this exception lookup it's possible
257 // we could deoptimize on the way out of the VM and end back in
258 // the interpreter at the throw site. This would result in double
259 // notifications since the interpreter would also notify about
260 // these same catches and throws as it unwound the frame.
261
262 RegisterMap reg_map(thread);
263 frame stub_frame = thread->last_frame();
264 frame caller_frame = stub_frame.sender(®_map);
265
266 // We don't really want to deoptimize the nmethod itself since we
267 // can actually continue in the exception handler ourselves but I
268 // don't see an easy way to have the desired effect.
269 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
270 assert(caller_is_deopted(), "Must be deoptimized");
271
272 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
273 }
274
275 // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions
276 if (guard_pages_enabled) {
277 address fast_continuation = nm->handler_for_exception_and_pc(exception, pc);
278 if (fast_continuation != NULL) {
279 // Set flag if return address is a method handle call site.
280 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
281 return fast_continuation;
282 }
283 }
284
285 // If the stack guard pages are enabled, check whether there is a handler in
286 // the current method. Otherwise (guard pages disabled), force an unwind and
287 // skip the exception cache update (i.e., just leave continuation==NULL).
288 address continuation = NULL;
289 if (guard_pages_enabled) {
290
291 // New exception handling mechanism can support inlined methods
292 // with exception handlers since the mappings are from PC to PC
293
294 // debugging support
295 // tracing
296 if (log_is_enabled(Info, exceptions)) {
297 ResourceMark rm;
298 stringStream tempst;
299 tempst.print("compiled method <%s>\n"
300 " at PC" INTPTR_FORMAT " for thread " INTPTR_FORMAT,
301 nm->method()->print_value_string(), p2i(pc), p2i(thread));
302 Exceptions::log_exception(exception, tempst);
303 }
304 // for AbortVMOnException flag
305 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
306
307 // Clear out the exception oop and pc since looking up an
308 // exception handler can cause class loading, which might throw an
309 // exception and those fields are expected to be clear during
310 // normal bytecode execution.
311 thread->clear_exception_oop_and_pc();
312
313 continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false);
314 // If an exception was thrown during exception dispatch, the exception oop may have changed
315 thread->set_exception_oop(exception());
316 thread->set_exception_pc(pc);
317
318 // the exception cache is used only by non-implicit exceptions
319 if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) {
320 nm->add_handler_for_exception_and_pc(exception, pc, continuation);
321 }
322 }
323
324 // Set flag if return address is a method handle call site.
325 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
326
327 if (log_is_enabled(Info, exceptions)) {
328 ResourceMark rm;
329 log_info(exceptions)("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT
330 " for exception thrown at PC " PTR_FORMAT,
331 p2i(thread), p2i(continuation), p2i(pc));
332 }
333
334 return continuation;
335 JRT_END
336
337 // Enter this method from compiled code only if there is a Java exception handler
338 // in the method handling the exception.
339 // We are entering here from exception stub. We don't do a normal VM transition here.
340 // We do it in a helper. This is so we can check to see if the nmethod we have just
341 // searched for an exception handler has been deoptimized in the meantime.
342 address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) {
343 oop exception = thread->exception_oop();
344 address pc = thread->exception_pc();
345 // Still in Java mode
346 DEBUG_ONLY(ResetNoHandleMark rnhm);
347 nmethod* nm = NULL;
348 address continuation = NULL;
349 {
350 // Enter VM mode by calling the helper
351 ResetNoHandleMark rnhm;
352 continuation = exception_handler_for_pc_helper(thread, exception, pc, nm);
353 }
354 // Back in JAVA, use no oops DON'T safepoint
355
356 // Now check to see if the compiled method we were called from is now deoptimized.
357 // If so we must return to the deopt blob and deoptimize the nmethod
358 if (nm != NULL && caller_is_deopted()) {
359 continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
360 }
361
362 assert(continuation != NULL, "no handler found");
363 return continuation;
364 }
365
366 JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock))
367 IF_TRACE_jvmci_3 {
368 char type[O_BUFLEN];
369 obj->klass()->name()->as_C_string(type, O_BUFLEN);
370 markOop mark = obj->mark();
371 TRACE_jvmci_3("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(mark), p2i(lock));
372 tty->flush();
373 }
374 #ifdef ASSERT
375 if (PrintBiasedLockingStatistics) {
376 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
377 }
378 #endif
379 Handle h_obj(thread, obj);
380 assert(h_obj()->is_oop(), "must be NULL or an object");
381 if (UseBiasedLocking) {
382 // Retry fast entry if bias is revoked to avoid unnecessary inflation
383 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
384 } else {
385 if (JVMCIUseFastLocking) {
386 // When using fast locking, the compiled code has already tried the fast case
387 ObjectSynchronizer::slow_enter(h_obj, lock, THREAD);
388 } else {
389 ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD);
390 }
391 }
392 TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj));
393 JRT_END
394
395 JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock))
396 assert(thread == JavaThread::current(), "threads must correspond");
397 assert(thread->last_Java_sp(), "last_Java_sp must be set");
398 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
399 EXCEPTION_MARK;
400
401 #ifdef DEBUG
402 if (!obj->is_oop()) {
403 ResetNoHandleMark rhm;
404 nmethod* method = thread->last_frame().cb()->as_nmethod_or_null();
405 if (method != NULL) {
406 tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj));
407 }
408 thread->print_stack_on(tty);
409 assert(false, "invalid lock object pointer dected");
410 }
411 #endif
412
413 if (JVMCIUseFastLocking) {
414 // When using fast locking, the compiled code has already tried the fast case
415 ObjectSynchronizer::slow_exit(obj, lock, THREAD);
416 } else {
417 ObjectSynchronizer::fast_exit(obj, lock, THREAD);
418 }
419 IF_TRACE_jvmci_3 {
420 char type[O_BUFLEN];
421 obj->klass()->name()->as_C_string(type, O_BUFLEN);
422 TRACE_jvmci_3("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(obj->mark()), p2i(lock));
423 tty->flush();
424 }
425 JRT_END
426
427 JRT_ENTRY(void, JVMCIRuntime::throw_and_post_jvmti_exception(JavaThread* thread, Symbol* name, const char* message))
428 SharedRuntime::throw_and_post_jvmti_exception(thread, name, message);
429 JRT_END
430
431 JRT_ENTRY(void, JVMCIRuntime::throw_klass_external_name_exception(JavaThread* thread, Symbol* exception, Klass* klass))
432 ResourceMark rm(thread);
433 SharedRuntime::throw_and_post_jvmti_exception(thread, exception, klass->external_name());
434 JRT_END
435
436 JRT_ENTRY(void, JVMCIRuntime::throw_class_cast_exception(JavaThread* thread, Symbol* exception, Klass* objKlass, Klass* targetKlass, const char* desc))
437 ResourceMark rm(thread);
438 const char* message = SharedRuntime::generate_class_cast_message(objKlass->external_name(), targetKlass->external_name(), desc);
439 SharedRuntime::throw_and_post_jvmti_exception(thread, exception, message);
440 JRT_END
441
442 JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, bool as_string, bool newline))
443 ttyLocker ttyl;
444
445 if (obj == NULL) {
446 tty->print("NULL");
447 } else if (obj->is_oop_or_null(true) && (!as_string || !java_lang_String::is_instance(obj))) {
448 if (obj->is_oop_or_null(true)) {
449 char buf[O_BUFLEN];
450 tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj));
451 } else {
452 tty->print(INTPTR_FORMAT, p2i(obj));
453 }
454 } else {
455 ResourceMark rm;
456 assert(obj != NULL && java_lang_String::is_instance(obj), "must be");
457 char *buf = java_lang_String::as_utf8_string(obj);
458 tty->print_raw(buf);
459 }
460 if (newline) {
461 tty->cr();
462 }
463 JRT_END
464
465 JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj))
466 thread->satb_mark_queue().enqueue(obj);
467 JRT_END
468
469 JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr))
470 thread->dirty_card_queue().enqueue(card_addr);
471 JRT_END
472
473 JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child))
474 bool ret = true;
475 if(!Universe::heap()->is_in_closed_subset(parent)) {
476 tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent));
477 parent->print();
478 ret=false;
479 }
480 if(!Universe::heap()->is_in_closed_subset(child)) {
481 tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child));
482 child->print();
483 ret=false;
484 }
485 return (jint)ret;
486 JRT_END
487
488 JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value))
489 ResourceMark rm;
490 const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where;
491 char *detail_msg = NULL;
492 if (format != 0L) {
493 const char* buf = (char*) (address) format;
494 size_t detail_msg_length = strlen(buf) * 2;
495 detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length);
496 jio_snprintf(detail_msg, detail_msg_length, buf, value);
497 report_vm_error(__FILE__, __LINE__, error_msg, "%s", detail_msg);
498 } else {
499 report_vm_error(__FILE__, __LINE__, error_msg);
500 }
501 JRT_END
502
503 JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread))
504 oop exception = thread->exception_oop();
505 assert(exception != NULL, "npe");
506 thread->set_exception_oop(NULL);
507 thread->set_exception_pc(0);
508 return exception;
509 JRT_END
510
511 PRAGMA_DIAG_PUSH
512 PRAGMA_FORMAT_NONLITERAL_IGNORED
513 JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3))
514 ResourceMark rm;
515 assert(format != NULL && java_lang_String::is_instance(format), "must be");
516 char *buf = java_lang_String::as_utf8_string(format);
517 tty->print((const char*)buf, v1, v2, v3);
518 JRT_END
519 PRAGMA_DIAG_POP
520
521 static void decipher(jlong v, bool ignoreZero) {
522 if (v != 0 || !ignoreZero) {
523 void* p = (void *)(address) v;
524 CodeBlob* cb = CodeCache::find_blob(p);
525 if (cb) {
526 if (cb->is_nmethod()) {
527 char buf[O_BUFLEN];
528 tty->print("%s [" INTPTR_FORMAT "+" JLONG_FORMAT "]", cb->as_nmethod_or_null()->method()->name_and_sig_as_C_string(buf, O_BUFLEN), p2i(cb->code_begin()), (jlong)((address)v - cb->code_begin()));
529 return;
530 }
531 cb->print_value_on(tty);
532 return;
533 }
534 if (Universe::heap()->is_in(p)) {
535 oop obj = oop(p);
536 obj->print_value_on(tty);
537 return;
538 }
539 tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v);
540 }
541 }
542
543 PRAGMA_DIAG_PUSH
544 PRAGMA_FORMAT_NONLITERAL_IGNORED
545 JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3))
546 ResourceMark rm;
547 const char *buf = (const char*) (address) format;
548 if (vmError) {
549 if (buf != NULL) {
550 fatal(buf, v1, v2, v3);
551 } else {
552 fatal("<anonymous error>");
553 }
554 } else if (buf != NULL) {
555 tty->print(buf, v1, v2, v3);
556 } else {
557 assert(v2 == 0, "v2 != 0");
558 assert(v3 == 0, "v3 != 0");
559 decipher(v1, false);
560 }
561 JRT_END
562 PRAGMA_DIAG_POP
563
564 JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline))
565 union {
566 jlong l;
567 jdouble d;
568 jfloat f;
569 } uu;
570 uu.l = value;
571 switch (typeChar) {
572 case 'z': tty->print(value == 0 ? "false" : "true"); break;
573 case 'b': tty->print("%d", (jbyte) value); break;
574 case 'c': tty->print("%c", (jchar) value); break;
575 case 's': tty->print("%d", (jshort) value); break;
576 case 'i': tty->print("%d", (jint) value); break;
577 case 'f': tty->print("%f", uu.f); break;
578 case 'j': tty->print(JLONG_FORMAT, value); break;
579 case 'd': tty->print("%lf", uu.d); break;
580 default: assert(false, "unknown typeChar"); break;
581 }
582 if (newline) {
583 tty->cr();
584 }
585 JRT_END
586
587 JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj))
588 return (jint) obj->identity_hash();
589 JRT_END
590
591 JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted))
592 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate.
593 // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF.
594 Handle receiverHandle(thread, receiver);
595 MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock);
596 JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle());
597 if (receiverThread == NULL) {
598 // The other thread may exit during this process, which is ok so return false.
599 return JNI_FALSE;
600 } else {
601 return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0);
602 }
603 JRT_END
604
605 JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value))
606 deopt_caller();
607 return value;
608 JRT_END
609
610 // private static JVMCIRuntime JVMCI.initializeRuntime()
611 JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c))
612 if (!EnableJVMCI) {
613 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
614 }
615 JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL);
616 jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL);
617 return ret;
618 JVM_END
619
620 Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) {
621 guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime");
622
623 TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle()));
624 KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle()));
625 TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle()));
626 TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle()));
627 JavaValue result(T_OBJECT);
628 if (args == NULL) {
629 JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle()));
630 } else {
631 JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle()));
632 }
633 return Handle((oop)result.get_jobject());
634 }
635
636 void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) {
637 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
638 ResourceMark rm;
639 #ifdef ASSERT
640 // This should only be called in the context of the JVMCI class being initialized
641 TempNewSymbol name = SymbolTable::new_symbol("jdk/vm/ci/runtime/JVMCI", CHECK);
642 Klass* k = SystemDictionary::resolve_or_null(name, CHECK);
643 instanceKlassHandle klass = InstanceKlass::cast(k);
644 assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD),
645 "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization");
646 #endif
647
648 Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime",
649 "runtime",
650 "()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK);
651 objArrayOop trivial_prefixes = HotSpotJVMCIRuntime::trivialPrefixes(result);
652 if (trivial_prefixes != NULL) {
653 char** prefixes = NEW_C_HEAP_ARRAY(char*, trivial_prefixes->length(), mtCompiler);
654 for (int i = 0; i < trivial_prefixes->length(); i++) {
655 oop str = trivial_prefixes->obj_at(i);
656 if (str == NULL) {
657 THROW(vmSymbols::java_lang_NullPointerException());
658 } else {
659 prefixes[i] = strdup(java_lang_String::as_utf8_string(str));
660 }
661 }
662 _trivial_prefixes = prefixes;
663 _trivial_prefixes_count = trivial_prefixes->length();
664 }
665 _HotSpotJVMCIRuntime_initialized = true;
666 _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result());
667 }
668 }
669
670 void JVMCIRuntime::initialize_JVMCI(TRAPS) {
671 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
672 callStatic("jdk/vm/ci/runtime/JVMCI",
673 "getRuntime",
674 "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK);
675 }
676 assert(_HotSpotJVMCIRuntime_initialized == true, "what?");
677 }
678
679 void JVMCIRuntime::initialize_well_known_classes(TRAPS) {
680 if (JVMCIRuntime::_well_known_classes_initialized == false) {
681 SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID;
682 SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK);
683 JVMCIJavaClasses::compute_offsets(CHECK);
684 JVMCIRuntime::_well_known_classes_initialized = true;
685 }
686 }
687
688 void JVMCIRuntime::metadata_do(void f(Metadata*)) {
689 // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in
690 // the SystemDictionary well known classes should ensure the other
691 // classes have already been loaded, so make sure their order in the
692 // table enforces that.
693 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) <
694 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
695 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) <
696 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
697 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) <
698 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
699
700 if (HotSpotJVMCIMetaAccessContext::klass() == NULL ||
701 !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) {
702 // Nothing could be registered yet
703 return;
704 }
705
706 // WeakReference<HotSpotJVMCIMetaAccessContext>[]
707 objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts();
708 if (allContexts == NULL) {
709 return;
710 }
711
712 // These must be loaded at this point but the linking state doesn't matter.
713 assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded");
714 assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded");
715 assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded");
716
717 for (int i = 0; i < allContexts->length(); i++) {
718 oop ref = allContexts->obj_at(i);
719 if (ref != NULL) {
720 oop referent = java_lang_ref_Reference::referent(ref);
721 if (referent != NULL) {
722 // Chunked Object[] with last element pointing to next chunk
723 objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent);
724 while (metadataRoots != NULL) {
725 for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) {
726 oop reference = metadataRoots->obj_at(typeIndex);
727 if (reference == NULL) {
728 continue;
729 }
730 oop metadataRoot = java_lang_ref_Reference::referent(reference);
731 if (metadataRoot == NULL) {
732 continue;
733 }
734 if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) {
735 Method* method = CompilerToVM::asMethod(metadataRoot);
736 f(method);
737 } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) {
738 ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot);
739 f(constantPool);
740 } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) {
741 Klass* klass = CompilerToVM::asKlass(metadataRoot);
742 f(klass);
743 } else {
744 metadataRoot->print();
745 ShouldNotReachHere();
746 }
747 }
748 metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1);
749 assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type");
750 }
751 }
752 }
753 }
754 }
755
756 // private static void CompilerToVM.registerNatives()
757 JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass))
758 if (!EnableJVMCI) {
759 THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled");
760 }
761
762 #ifdef _LP64
763 #ifndef TARGET_ARCH_sparc
764 uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end();
765 uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024;
766 guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)");
767 #endif // TARGET_ARCH_sparc
768 #else
769 fatal("check TLAB allocation code for address space conflicts");
770 #endif
771
772 JVMCIRuntime::initialize_well_known_classes(CHECK);
773
774 {
775 ThreadToNativeFromVM trans(thread);
776 env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count());
777 }
778 JVM_END
779
780 #define CHECK_WARN_ABORT_(message) THREAD); \
781 if (HAS_PENDING_EXCEPTION) { \
782 warning(message); \
783 char buf[512]; \
784 jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \
785 JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \
786 return; \
787 } \
788 (void)(0
789
790 void JVMCIRuntime::shutdown(TRAPS) {
791 if (_HotSpotJVMCIRuntime_instance != NULL) {
792 _shutdown_called = true;
793 HandleMark hm(THREAD);
794 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
795 JavaValue result(T_VOID);
796 JavaCallArguments args;
797 args.push_oop(receiver);
798 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
799 }
800 }
801
802 bool JVMCIRuntime::treat_as_trivial(Method* method) {
803 if (_HotSpotJVMCIRuntime_initialized) {
804 for (int i = 0; i < _trivial_prefixes_count; i++) {
805 if (method->method_holder()->name()->starts_with(_trivial_prefixes[i])) {
806 return true;
807 }
808 }
809 }
810 return false;
811 }