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 "memory/resourceArea.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "oops/objArrayOop.inline.hpp"
40 #include "prims/jvm.h"
41 #include "runtime/biasedLocking.hpp"
42 #include "runtime/interfaceSupport.hpp"
43 #include "runtime/reflection.hpp"
44 #include "runtime/sharedRuntime.hpp"
45 #include "utilities/debug.hpp"
46 #include "utilities/defaultStream.hpp"
47
48 #if defined(_MSC_VER)
49 #define strtoll _strtoi64
50 #endif
51
52 jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL;
53 bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false;
54 bool JVMCIRuntime::_well_known_classes_initialized = false;
55 int JVMCIRuntime::_trivial_prefixes_count = 0;
56 char** JVMCIRuntime::_trivial_prefixes = NULL;
57 JVMCIRuntime::CompLevelAdjustment JVMCIRuntime::_comp_level_adjustment = JVMCIRuntime::none;
58 bool JVMCIRuntime::_shutdown_called = false;
59
60 BasicType JVMCIRuntime::kindToBasicType(Handle kind, TRAPS) {
61 if (kind.is_null()) {
62 THROW_(vmSymbols::java_lang_NullPointerException(), T_ILLEGAL);
63 }
64 jchar ch = JavaKind::typeChar(kind);
65 switch(ch) {
66 case 'Z': return T_BOOLEAN;
67 case 'B': return T_BYTE;
68 case 'S': return T_SHORT;
69 case 'C': return T_CHAR;
70 case 'I': return T_INT;
71 case 'F': return T_FLOAT;
72 case 'J': return T_LONG;
73 case 'D': return T_DOUBLE;
74 case 'A': return T_OBJECT;
75 case '-': return T_ILLEGAL;
76 default:
77 JVMCI_ERROR_(T_ILLEGAL, "unexpected Kind: %c", ch);
78 }
79 }
80
81 // Simple helper to see if the caller of a runtime stub which
82 // entered the VM has been deoptimized
83
84 static bool caller_is_deopted() {
85 JavaThread* thread = JavaThread::current();
86 RegisterMap reg_map(thread, false);
87 frame runtime_frame = thread->last_frame();
88 frame caller_frame = runtime_frame.sender(®_map);
89 assert(caller_frame.is_compiled_frame(), "must be compiled");
90 return caller_frame.is_deoptimized_frame();
91 }
92
93 // Stress deoptimization
94 static void deopt_caller() {
95 if ( !caller_is_deopted()) {
96 JavaThread* thread = JavaThread::current();
97 RegisterMap reg_map(thread, false);
98 frame runtime_frame = thread->last_frame();
99 frame caller_frame = runtime_frame.sender(®_map);
100 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
101 assert(caller_is_deopted(), "Must be deoptimized");
102 }
103 }
104
105 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass))
106 JRT_BLOCK;
107 assert(klass->is_klass(), "not a class");
108 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
109 instanceKlassHandle h(thread, klass);
110 h->check_valid_for_instantiation(true, CHECK);
111 // make sure klass is initialized
112 h->initialize(CHECK);
113 // allocate instance and return via TLS
114 oop obj = h->allocate_instance(CHECK);
115 thread->set_vm_result(obj);
116 JRT_BLOCK_END;
117
118 if (ReduceInitialCardMarks) {
119 new_store_pre_barrier(thread);
120 }
121 JRT_END
122
123 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
124 JRT_BLOCK;
125 // Note: no handle for klass needed since they are not used
126 // anymore after new_objArray() and no GC can happen before.
127 // (This may have to change if this code changes!)
128 assert(array_klass->is_klass(), "not a class");
129 oop obj;
130 if (array_klass->is_typeArray_klass()) {
131 BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type();
132 obj = oopFactory::new_typeArray(elt_type, length, CHECK);
133 } else {
134 Handle holder(THREAD, array_klass->klass_holder()); // keep the klass alive
135 Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass();
136 obj = oopFactory::new_objArray(elem_klass, length, CHECK);
137 }
138 thread->set_vm_result(obj);
139 // This is pretty rare but this runtime patch is stressful to deoptimization
140 // if we deoptimize here so force a deopt to stress the path.
141 if (DeoptimizeALot) {
142 static int deopts = 0;
143 // Alternate between deoptimizing and raising an error (which will also cause a deopt)
144 if (deopts++ % 2 == 0) {
145 ResourceMark rm(THREAD);
146 THROW(vmSymbols::java_lang_OutOfMemoryError());
147 } else {
148 deopt_caller();
149 }
150 }
151 JRT_BLOCK_END;
152
153 if (ReduceInitialCardMarks) {
154 new_store_pre_barrier(thread);
155 }
156 JRT_END
157
158 void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) {
159 // After any safepoint, just before going back to compiled code,
160 // we inform the GC that we will be doing initializing writes to
161 // this object in the future without emitting card-marks, so
162 // GC may take any compensating steps.
163 // NOTE: Keep this code consistent with GraphKit::store_barrier.
164
165 oop new_obj = thread->vm_result();
166 if (new_obj == NULL) return;
167
168 assert(Universe::heap()->can_elide_tlab_store_barriers(),
169 "compiler must check this first");
170 // GC may decide to give back a safer copy of new_obj.
171 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
172 thread->set_vm_result(new_obj);
173 }
174
175 JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
176 assert(klass->is_klass(), "not a class");
177 assert(rank >= 1, "rank must be nonzero");
178 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
179 oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
180 thread->set_vm_result(obj);
181 JRT_END
182
183 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length))
184 oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK);
185 thread->set_vm_result(obj);
186 JRT_END
187
188 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror))
189 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror));
190
191 if (klass == NULL) {
192 ResourceMark rm(THREAD);
193 THROW(vmSymbols::java_lang_InstantiationException());
194 }
195
196 // Create new instance (the receiver)
197 klass->check_valid_for_instantiation(false, CHECK);
198
199 // Make sure klass gets initialized
200 klass->initialize(CHECK);
201
202 oop obj = klass->allocate_instance(CHECK);
203 thread->set_vm_result(obj);
204 JRT_END
205
206 extern void vm_exit(int code);
207
208 // Enter this method from compiled code handler below. This is where we transition
209 // to VM mode. This is done as a helper routine so that the method called directly
210 // from compiled code does not have to transition to VM. This allows the entry
211 // method to see if the nmethod that we have just looked up a handler for has
212 // been deoptimized while we were in the vm. This simplifies the assembly code
213 // cpu directories.
214 //
215 // We are entering here from exception stub (via the entry method below)
216 // If there is a compiled exception handler in this method, we will continue there;
217 // otherwise we will unwind the stack and continue at the caller of top frame method
218 // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to
219 // control the area where we can allow a safepoint. After we exit the safepoint area we can
220 // check to see if the handler we are going to return is now in a nmethod that has
221 // been deoptimized. If that is the case we return the deopt blob
222 // unpack_with_exception entry instead. This makes life for the exception blob easier
223 // because making that same check and diverting is painful from assembly language.
224 JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, CompiledMethod*& cm))
225 // Reset method handle flag.
226 thread->set_is_method_handle_return(false);
227
228 Handle exception(thread, ex);
229 cm = CodeCache::find_compiled(pc);
230 assert(cm != NULL, "this is not a compiled method");
231 // Adjust the pc as needed/
232 if (cm->is_deopt_pc(pc)) {
233 RegisterMap map(thread, false);
234 frame exception_frame = thread->last_frame().sender(&map);
235 // if the frame isn't deopted then pc must not correspond to the caller of last_frame
236 assert(exception_frame.is_deoptimized_frame(), "must be deopted");
237 pc = exception_frame.pc();
238 }
239 #ifdef ASSERT
240 assert(exception.not_null(), "NULL exceptions should be handled by throw_exception");
241 assert(exception->is_oop(), "just checking");
242 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError
243 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
244 if (ExitVMOnVerifyError) vm_exit(-1);
245 ShouldNotReachHere();
246 }
247 #endif
248
249 // Check the stack guard pages and reenable them if necessary and there is
250 // enough space on the stack to do so. Use fast exceptions only if the guard
251 // pages are enabled.
252 bool guard_pages_enabled = thread->stack_guards_enabled();
253 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack();
254
255 if (JvmtiExport::can_post_on_exceptions()) {
256 // To ensure correct notification of exception catches and throws
257 // we have to deoptimize here. If we attempted to notify the
258 // catches and throws during this exception lookup it's possible
259 // we could deoptimize on the way out of the VM and end back in
260 // the interpreter at the throw site. This would result in double
261 // notifications since the interpreter would also notify about
262 // these same catches and throws as it unwound the frame.
263
264 RegisterMap reg_map(thread);
265 frame stub_frame = thread->last_frame();
266 frame caller_frame = stub_frame.sender(®_map);
267
268 // We don't really want to deoptimize the nmethod itself since we
269 // can actually continue in the exception handler ourselves but I
270 // don't see an easy way to have the desired effect.
271 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
272 assert(caller_is_deopted(), "Must be deoptimized");
273
274 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
275 }
276
277 // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions
278 if (guard_pages_enabled) {
279 address fast_continuation = cm->handler_for_exception_and_pc(exception, pc);
280 if (fast_continuation != NULL) {
281 // Set flag if return address is a method handle call site.
282 thread->set_is_method_handle_return(cm->is_method_handle_return(pc));
283 return fast_continuation;
284 }
285 }
286
287 // If the stack guard pages are enabled, check whether there is a handler in
288 // the current method. Otherwise (guard pages disabled), force an unwind and
289 // skip the exception cache update (i.e., just leave continuation==NULL).
290 address continuation = NULL;
291 if (guard_pages_enabled) {
292
293 // New exception handling mechanism can support inlined methods
294 // with exception handlers since the mappings are from PC to PC
295
296 // debugging support
297 // tracing
298 if (log_is_enabled(Info, exceptions)) {
299 ResourceMark rm;
300 stringStream tempst;
301 tempst.print("compiled method <%s>\n"
302 " at PC" INTPTR_FORMAT " for thread " INTPTR_FORMAT,
303 cm->method()->print_value_string(), p2i(pc), p2i(thread));
304 Exceptions::log_exception(exception, tempst);
305 }
306 // for AbortVMOnException flag
307 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
308
309 // Clear out the exception oop and pc since looking up an
310 // exception handler can cause class loading, which might throw an
311 // exception and those fields are expected to be clear during
312 // normal bytecode execution.
313 thread->clear_exception_oop_and_pc();
314
315 continuation = SharedRuntime::compute_compiled_exc_handler(cm, pc, exception, false, false);
316 // If an exception was thrown during exception dispatch, the exception oop may have changed
317 thread->set_exception_oop(exception());
318 thread->set_exception_pc(pc);
319
320 // the exception cache is used only by non-implicit exceptions
321 if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) {
322 cm->add_handler_for_exception_and_pc(exception, pc, continuation);
323 }
324 }
325
326 // Set flag if return address is a method handle call site.
327 thread->set_is_method_handle_return(cm->is_method_handle_return(pc));
328
329 if (log_is_enabled(Info, exceptions)) {
330 ResourceMark rm;
331 log_info(exceptions)("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT
332 " for exception thrown at PC " PTR_FORMAT,
333 p2i(thread), p2i(continuation), p2i(pc));
334 }
335
336 return continuation;
337 JRT_END
338
339 // Enter this method from compiled code only if there is a Java exception handler
340 // in the method handling the exception.
341 // We are entering here from exception stub. We don't do a normal VM transition here.
342 // We do it in a helper. This is so we can check to see if the nmethod we have just
343 // searched for an exception handler has been deoptimized in the meantime.
344 address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) {
345 oop exception = thread->exception_oop();
346 address pc = thread->exception_pc();
347 // Still in Java mode
348 DEBUG_ONLY(ResetNoHandleMark rnhm);
349 CompiledMethod* cm = NULL;
350 address continuation = NULL;
351 {
352 // Enter VM mode by calling the helper
353 ResetNoHandleMark rnhm;
354 continuation = exception_handler_for_pc_helper(thread, exception, pc, cm);
355 }
356 // Back in JAVA, use no oops DON'T safepoint
357
358 // Now check to see if the compiled method we were called from is now deoptimized.
359 // If so we must return to the deopt blob and deoptimize the nmethod
360 if (cm != NULL && caller_is_deopted()) {
361 continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
362 }
363
364 assert(continuation != NULL, "no handler found");
365 return continuation;
366 }
367
368 JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock))
369 IF_TRACE_jvmci_3 {
370 char type[O_BUFLEN];
371 obj->klass()->name()->as_C_string(type, O_BUFLEN);
372 markOop mark = obj->mark();
373 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));
374 tty->flush();
375 }
376 #ifdef ASSERT
377 if (PrintBiasedLockingStatistics) {
378 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
379 }
380 #endif
381 Handle h_obj(thread, obj);
382 assert(h_obj()->is_oop(), "must be NULL or an object");
383 if (UseBiasedLocking) {
384 // Retry fast entry if bias is revoked to avoid unnecessary inflation
385 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
386 } else {
387 if (JVMCIUseFastLocking) {
388 // When using fast locking, the compiled code has already tried the fast case
389 ObjectSynchronizer::slow_enter(h_obj, lock, THREAD);
390 } else {
391 ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD);
392 }
393 }
394 TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj));
395 JRT_END
396
397 JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock))
398 assert(thread == JavaThread::current(), "threads must correspond");
399 assert(thread->last_Java_sp(), "last_Java_sp must be set");
400 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
401 EXCEPTION_MARK;
402
403 #ifdef DEBUG
404 if (!obj->is_oop()) {
405 ResetNoHandleMark rhm;
406 nmethod* method = thread->last_frame().cb()->as_nmethod_or_null();
407 if (method != NULL) {
408 tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj));
409 }
410 thread->print_stack_on(tty);
411 assert(false, "invalid lock object pointer dected");
412 }
413 #endif
414
415 if (JVMCIUseFastLocking) {
416 // When using fast locking, the compiled code has already tried the fast case
417 ObjectSynchronizer::slow_exit(obj, lock, THREAD);
418 } else {
419 ObjectSynchronizer::fast_exit(obj, lock, THREAD);
420 }
421 IF_TRACE_jvmci_3 {
422 char type[O_BUFLEN];
423 obj->klass()->name()->as_C_string(type, O_BUFLEN);
424 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));
425 tty->flush();
426 }
427 JRT_END
428
429 JRT_ENTRY(void, JVMCIRuntime::throw_and_post_jvmti_exception(JavaThread* thread, const char* exception, const char* message))
430 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
431 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);
432 JRT_END
433
434 JRT_ENTRY(void, JVMCIRuntime::throw_klass_external_name_exception(JavaThread* thread, const char* exception, Klass* klass))
435 ResourceMark rm(thread);
436 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
437 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, klass->external_name());
438 JRT_END
439
440 JRT_ENTRY(void, JVMCIRuntime::throw_class_cast_exception(JavaThread* thread, const char* exception, Klass* caster_klass, Klass* target_klass))
441 ResourceMark rm(thread);
442 const char* message = SharedRuntime::generate_class_cast_message(caster_klass, target_klass);
443 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
444 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);
445 JRT_END
446
447 JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, bool as_string, bool newline))
448 ttyLocker ttyl;
449
450 if (obj == NULL) {
451 tty->print("NULL");
452 } else if (obj->is_oop_or_null(true) && (!as_string || !java_lang_String::is_instance(obj))) {
453 if (obj->is_oop_or_null(true)) {
454 char buf[O_BUFLEN];
455 tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj));
456 } else {
457 tty->print(INTPTR_FORMAT, p2i(obj));
458 }
459 } else {
460 ResourceMark rm;
461 assert(obj != NULL && java_lang_String::is_instance(obj), "must be");
462 char *buf = java_lang_String::as_utf8_string(obj);
463 tty->print_raw(buf);
464 }
465 if (newline) {
466 tty->cr();
467 }
468 JRT_END
469
470 JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj))
471 thread->satb_mark_queue().enqueue(obj);
472 JRT_END
473
474 JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr))
475 thread->dirty_card_queue().enqueue(card_addr);
476 JRT_END
477
478 JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child))
479 bool ret = true;
480 if(!Universe::heap()->is_in_closed_subset(parent)) {
481 tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent));
482 parent->print();
483 ret=false;
484 }
485 if(!Universe::heap()->is_in_closed_subset(child)) {
486 tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child));
487 child->print();
488 ret=false;
489 }
490 return (jint)ret;
491 JRT_END
492
493 JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value))
494 ResourceMark rm;
495 const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where;
496 char *detail_msg = NULL;
497 if (format != 0L) {
498 const char* buf = (char*) (address) format;
499 size_t detail_msg_length = strlen(buf) * 2;
500 detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length);
501 jio_snprintf(detail_msg, detail_msg_length, buf, value);
502 report_vm_error(__FILE__, __LINE__, error_msg, "%s", detail_msg);
503 } else {
504 report_vm_error(__FILE__, __LINE__, error_msg);
505 }
506 JRT_END
507
508 JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread))
509 oop exception = thread->exception_oop();
510 assert(exception != NULL, "npe");
511 thread->set_exception_oop(NULL);
512 thread->set_exception_pc(0);
513 return exception;
514 JRT_END
515
516 PRAGMA_DIAG_PUSH
517 PRAGMA_FORMAT_NONLITERAL_IGNORED
518 JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3))
519 ResourceMark rm;
520 assert(format != NULL && java_lang_String::is_instance(format), "must be");
521 char *buf = java_lang_String::as_utf8_string(format);
522 tty->print((const char*)buf, v1, v2, v3);
523 JRT_END
524 PRAGMA_DIAG_POP
525
526 static void decipher(jlong v, bool ignoreZero) {
527 if (v != 0 || !ignoreZero) {
528 void* p = (void *)(address) v;
529 CodeBlob* cb = CodeCache::find_blob(p);
530 if (cb) {
531 if (cb->is_nmethod()) {
532 char buf[O_BUFLEN];
533 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()));
534 return;
535 }
536 cb->print_value_on(tty);
537 return;
538 }
539 if (Universe::heap()->is_in(p)) {
540 oop obj = oop(p);
541 obj->print_value_on(tty);
542 return;
543 }
544 tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v);
545 }
546 }
547
548 PRAGMA_DIAG_PUSH
549 PRAGMA_FORMAT_NONLITERAL_IGNORED
550 JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3))
551 ResourceMark rm;
552 const char *buf = (const char*) (address) format;
553 if (vmError) {
554 if (buf != NULL) {
555 fatal(buf, v1, v2, v3);
556 } else {
557 fatal("<anonymous error>");
558 }
559 } else if (buf != NULL) {
560 tty->print(buf, v1, v2, v3);
561 } else {
562 assert(v2 == 0, "v2 != 0");
563 assert(v3 == 0, "v3 != 0");
564 decipher(v1, false);
565 }
566 JRT_END
567 PRAGMA_DIAG_POP
568
569 JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline))
570 union {
571 jlong l;
572 jdouble d;
573 jfloat f;
574 } uu;
575 uu.l = value;
576 switch (typeChar) {
577 case 'Z': tty->print(value == 0 ? "false" : "true"); break;
578 case 'B': tty->print("%d", (jbyte) value); break;
579 case 'C': tty->print("%c", (jchar) value); break;
580 case 'S': tty->print("%d", (jshort) value); break;
581 case 'I': tty->print("%d", (jint) value); break;
582 case 'F': tty->print("%f", uu.f); break;
583 case 'J': tty->print(JLONG_FORMAT, value); break;
584 case 'D': tty->print("%lf", uu.d); break;
585 default: assert(false, "unknown typeChar"); break;
586 }
587 if (newline) {
588 tty->cr();
589 }
590 JRT_END
591
592 JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj))
593 return (jint) obj->identity_hash();
594 JRT_END
595
596 JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted))
597 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate.
598 // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF.
599 Handle receiverHandle(thread, receiver);
600 MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock);
601 JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle());
602 if (receiverThread == NULL) {
603 // The other thread may exit during this process, which is ok so return false.
604 return JNI_FALSE;
605 } else {
606 return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0);
607 }
608 JRT_END
609
610 JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value))
611 deopt_caller();
612 return value;
613 JRT_END
614
615 void JVMCIRuntime::force_initialization(TRAPS) {
616 JVMCIRuntime::initialize_well_known_classes(CHECK);
617
618 ResourceMark rm;
619 TempNewSymbol getCompiler = SymbolTable::new_symbol("getCompiler", CHECK);
620 TempNewSymbol sig = SymbolTable::new_symbol("()Ljdk/vm/ci/runtime/JVMCICompiler;", CHECK);
621 Handle jvmciRuntime = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK);
622 JavaValue result(T_OBJECT);
623 JavaCalls::call_virtual(&result, jvmciRuntime, HotSpotJVMCIRuntime::klass(), getCompiler, sig, CHECK);
624 }
625
626 // private static JVMCIRuntime JVMCI.initializeRuntime()
627 JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c))
628 if (!EnableJVMCI) {
629 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
630 }
631 JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL);
632 jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL);
633 return ret;
634 JVM_END
635
636 Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) {
637 guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime");
638
639 TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle()));
640 KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle()));
641 TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle()));
642 TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle()));
643 JavaValue result(T_OBJECT);
644 if (args == NULL) {
645 JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle()));
646 } else {
647 JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle()));
648 }
649 return Handle((oop)result.get_jobject());
650 }
651
652 void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) {
653 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
654 ResourceMark rm;
655 #ifdef ASSERT
656 // This should only be called in the context of the JVMCI class being initialized
657 TempNewSymbol name = SymbolTable::new_symbol("jdk/vm/ci/runtime/JVMCI", CHECK);
658 Klass* k = SystemDictionary::resolve_or_null(name, CHECK);
659 instanceKlassHandle klass = InstanceKlass::cast(k);
660 assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD),
661 "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization");
662 #endif
663
664 Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime",
665 "runtime",
666 "()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK);
667 objArrayOop trivial_prefixes = HotSpotJVMCIRuntime::trivialPrefixes(result);
668 if (trivial_prefixes != NULL) {
669 char** prefixes = NEW_C_HEAP_ARRAY(char*, trivial_prefixes->length(), mtCompiler);
670 for (int i = 0; i < trivial_prefixes->length(); i++) {
671 oop str = trivial_prefixes->obj_at(i);
672 if (str == NULL) {
673 THROW(vmSymbols::java_lang_NullPointerException());
674 } else {
675 prefixes[i] = strdup(java_lang_String::as_utf8_string(str));
676 }
677 }
678 _trivial_prefixes = prefixes;
679 _trivial_prefixes_count = trivial_prefixes->length();
680 }
681 int adjustment = HotSpotJVMCIRuntime::compilationLevelAdjustment(result);
682 assert(adjustment >= JVMCIRuntime::none &&
683 adjustment <= JVMCIRuntime::by_full_signature,
684 "compilation level adjustment out of bounds");
685 _comp_level_adjustment = (CompLevelAdjustment) adjustment;
686 _HotSpotJVMCIRuntime_initialized = true;
687 _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result());
688 }
689 }
690
691 void JVMCIRuntime::initialize_JVMCI(TRAPS) {
692 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
693 callStatic("jdk/vm/ci/runtime/JVMCI",
694 "getRuntime",
695 "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK);
696 }
697 assert(_HotSpotJVMCIRuntime_initialized == true, "what?");
698 }
699
700 void JVMCIRuntime::initialize_well_known_classes(TRAPS) {
701 if (JVMCIRuntime::_well_known_classes_initialized == false) {
702 SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID;
703 SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK);
704 JVMCIJavaClasses::compute_offsets(CHECK);
705 JVMCIRuntime::_well_known_classes_initialized = true;
706 }
707 }
708
709 void JVMCIRuntime::metadata_do(void f(Metadata*)) {
710 // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in
711 // the SystemDictionary well known classes should ensure the other
712 // classes have already been loaded, so make sure their order in the
713 // table enforces that.
714 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) <
715 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
716 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) <
717 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
718 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) <
719 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
720
721 if (HotSpotJVMCIMetaAccessContext::klass() == NULL ||
722 !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) {
723 // Nothing could be registered yet
724 return;
725 }
726
727 // WeakReference<HotSpotJVMCIMetaAccessContext>[]
728 objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts();
729 if (allContexts == NULL) {
730 return;
731 }
732
733 // These must be loaded at this point but the linking state doesn't matter.
734 assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded");
735 assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded");
736 assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded");
737
738 for (int i = 0; i < allContexts->length(); i++) {
739 oop ref = allContexts->obj_at(i);
740 if (ref != NULL) {
741 oop referent = java_lang_ref_Reference::referent(ref);
742 if (referent != NULL) {
743 // Chunked Object[] with last element pointing to next chunk
744 objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent);
745 while (metadataRoots != NULL) {
746 for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) {
747 oop reference = metadataRoots->obj_at(typeIndex);
748 if (reference == NULL) {
749 continue;
750 }
751 oop metadataRoot = java_lang_ref_Reference::referent(reference);
752 if (metadataRoot == NULL) {
753 continue;
754 }
755 if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) {
756 Method* method = CompilerToVM::asMethod(metadataRoot);
757 f(method);
758 } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) {
759 ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot);
760 f(constantPool);
761 } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) {
762 Klass* klass = CompilerToVM::asKlass(metadataRoot);
763 f(klass);
764 } else {
765 metadataRoot->print();
766 ShouldNotReachHere();
767 }
768 }
769 metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1);
770 assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type");
771 }
772 }
773 }
774 }
775 }
776
777 // private static void CompilerToVM.registerNatives()
778 JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass))
779 if (!EnableJVMCI) {
780 THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled");
781 }
782
783 #ifdef _LP64
784 #ifndef TARGET_ARCH_sparc
785 uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end();
786 uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024;
787 guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)");
788 #endif // TARGET_ARCH_sparc
789 #else
790 fatal("check TLAB allocation code for address space conflicts");
791 #endif
792
793 JVMCIRuntime::initialize_well_known_classes(CHECK);
794
795 {
796 ThreadToNativeFromVM trans(thread);
797 env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count());
798 }
799 JVM_END
800
801 #define CHECK_WARN_ABORT_(message) THREAD); \
802 if (HAS_PENDING_EXCEPTION) { \
803 warning(message); \
804 char buf[512]; \
805 jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \
806 JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \
807 return; \
808 } \
809 (void)(0
810
811 void JVMCIRuntime::shutdown(TRAPS) {
812 if (_HotSpotJVMCIRuntime_instance != NULL) {
813 _shutdown_called = true;
814 HandleMark hm(THREAD);
815 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
816 JavaValue result(T_VOID);
817 JavaCallArguments args;
818 args.push_oop(receiver);
819 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
820 }
821 }
822
823 CompLevel JVMCIRuntime::adjust_comp_level_inner(methodHandle method, bool is_osr, CompLevel level, JavaThread* thread) {
824 JVMCICompiler* compiler = JVMCICompiler::instance(thread);
825 if (compiler != NULL && compiler->is_bootstrapping()) {
826 return level;
827 }
828 if (!is_HotSpotJVMCIRuntime_initialized() || !_comp_level_adjustment) {
829 // JVMCI cannot participate in compilation scheduling until
830 // JVMCI is initialized and indicates it wants to participate.
831 return level;
832 }
833
834 #define CHECK_RETURN THREAD); \
835 if (HAS_PENDING_EXCEPTION) { \
836 Handle exception(THREAD, PENDING_EXCEPTION); \
837 CLEAR_PENDING_EXCEPTION; \
838 \
839 java_lang_Throwable::java_printStackTrace(exception, THREAD); \
840 if (HAS_PENDING_EXCEPTION) { \
841 CLEAR_PENDING_EXCEPTION; \
842 } \
843 return level; \
844 } \
845 (void)(0
846
847
848 Thread* THREAD = thread;
849 HandleMark hm;
850 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_RETURN);
851 Handle name;
852 Handle sig;
853 if (_comp_level_adjustment == JVMCIRuntime::by_full_signature) {
854 name = java_lang_String::create_from_symbol(method->name(), CHECK_RETURN);
855 sig = java_lang_String::create_from_symbol(method->signature(), CHECK_RETURN);
856 } else {
857 name = Handle();
858 sig = Handle();
859 }
860
861 JavaValue result(T_INT);
862 JavaCallArguments args;
863 args.push_oop(receiver);
864 args.push_oop(method->method_holder()->java_mirror());
865 args.push_oop(name());
866 args.push_oop(sig());
867 args.push_int(is_osr);
868 args.push_int(level);
869 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::adjustCompilationLevel_name(),
870 vmSymbols::adjustCompilationLevel_signature(), &args, CHECK_RETURN);
871
872 int comp_level = result.get_jint();
873 if (comp_level < CompLevel_none || comp_level > CompLevel_full_optimization) {
874 assert(false, "compilation level out of bounds");
875 return level;
876 }
877 return (CompLevel) comp_level;
878 #undef CHECK_RETURN
879 }
880
881 void JVMCIRuntime::bootstrap_finished(TRAPS) {
882 HandleMark hm(THREAD);
883 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
884 JavaValue result(T_VOID);
885 JavaCallArguments args;
886 args.push_oop(receiver);
887 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::bootstrapFinished_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
888 }
889
890 bool JVMCIRuntime::treat_as_trivial(Method* method) {
891 if (_HotSpotJVMCIRuntime_initialized) {
892 for (int i = 0; i < _trivial_prefixes_count; i++) {
893 if (method->method_holder()->name()->starts_with(_trivial_prefixes[i])) {
894 return true;
895 }
896 }
897 }
898 return false;
899 }