1 /*
2 * Copyright (c) 2012, 2017, 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 "jvm.h"
26 #include "asm/codeBuffer.hpp"
27 #include "classfile/javaClasses.inline.hpp"
28 #include "code/codeCache.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/disassembler.hpp"
31 #include "jvmci/jvmciRuntime.hpp"
32 #include "jvmci/jvmciCompilerToVM.hpp"
33 #include "jvmci/jvmciCompiler.hpp"
34 #include "jvmci/jvmciJavaClasses.hpp"
35 #include "jvmci/jvmciEnv.hpp"
36 #include "logging/log.hpp"
37 #include "memory/oopFactory.hpp"
38 #include "memory/resourceArea.hpp"
39 #include "oops/oop.inline.hpp"
40 #include "oops/objArrayOop.inline.hpp"
41 #include "runtime/biasedLocking.hpp"
42 #include "runtime/interfaceSupport.hpp"
43 #include "runtime/reflection.hpp"
44 #include "runtime/sharedRuntime.hpp"
45 #include "runtime/threadSMR.hpp"
46 #include "utilities/debug.hpp"
47 #include "utilities/defaultStream.hpp"
48 #include "utilities/macros.hpp"
49
50 #if defined(_MSC_VER)
51 #define strtoll _strtoi64
52 #endif
53
54 jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL;
55 bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false;
56 bool JVMCIRuntime::_well_known_classes_initialized = false;
57 int JVMCIRuntime::_trivial_prefixes_count = 0;
58 char** JVMCIRuntime::_trivial_prefixes = NULL;
59 JVMCIRuntime::CompLevelAdjustment JVMCIRuntime::_comp_level_adjustment = JVMCIRuntime::none;
60 bool JVMCIRuntime::_shutdown_called = false;
61
62 BasicType JVMCIRuntime::kindToBasicType(Handle kind, TRAPS) {
63 if (kind.is_null()) {
64 THROW_(vmSymbols::java_lang_NullPointerException(), T_ILLEGAL);
65 }
66 jchar ch = JavaKind::typeChar(kind);
67 switch(ch) {
68 case 'Z': return T_BOOLEAN;
69 case 'B': return T_BYTE;
70 case 'S': return T_SHORT;
71 case 'C': return T_CHAR;
72 case 'I': return T_INT;
73 case 'F': return T_FLOAT;
74 case 'J': return T_LONG;
75 case 'D': return T_DOUBLE;
76 case 'A': return T_OBJECT;
77 case '-': return T_ILLEGAL;
78 default:
79 JVMCI_ERROR_(T_ILLEGAL, "unexpected Kind: %c", ch);
80 }
81 }
82
83 // Simple helper to see if the caller of a runtime stub which
84 // entered the VM has been deoptimized
85
86 static bool caller_is_deopted() {
87 JavaThread* thread = JavaThread::current();
88 RegisterMap reg_map(thread, false);
89 frame runtime_frame = thread->last_frame();
90 frame caller_frame = runtime_frame.sender(®_map);
91 assert(caller_frame.is_compiled_frame(), "must be compiled");
92 return caller_frame.is_deoptimized_frame();
93 }
94
95 // Stress deoptimization
96 static void deopt_caller() {
97 if ( !caller_is_deopted()) {
98 JavaThread* thread = JavaThread::current();
99 RegisterMap reg_map(thread, false);
100 frame runtime_frame = thread->last_frame();
101 frame caller_frame = runtime_frame.sender(®_map);
102 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
103 assert(caller_is_deopted(), "Must be deoptimized");
104 }
105 }
106
107 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass))
108 JRT_BLOCK;
109 assert(klass->is_klass(), "not a class");
110 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
111 InstanceKlass* ik = InstanceKlass::cast(klass);
112 ik->check_valid_for_instantiation(true, CHECK);
113 // make sure klass is initialized
114 ik->initialize(CHECK);
115 // allocate instance and return via TLS
116 oop obj = ik->allocate_instance(CHECK);
117 thread->set_vm_result(obj);
118 JRT_BLOCK_END;
119
120 if (ReduceInitialCardMarks) {
121 new_store_pre_barrier(thread);
122 }
123 JRT_END
124
125 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
126 JRT_BLOCK;
127 // Note: no handle for klass needed since they are not used
128 // anymore after new_objArray() and no GC can happen before.
129 // (This may have to change if this code changes!)
130 assert(array_klass->is_klass(), "not a class");
131 oop obj;
132 if (array_klass->is_typeArray_klass()) {
133 BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type();
134 obj = oopFactory::new_typeArray(elt_type, length, CHECK);
135 } else {
136 Handle holder(THREAD, array_klass->klass_holder()); // keep the klass alive
137 Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass();
138 obj = oopFactory::new_objArray(elem_klass, length, CHECK);
139 }
140 thread->set_vm_result(obj);
141 // This is pretty rare but this runtime patch is stressful to deoptimization
142 // if we deoptimize here so force a deopt to stress the path.
143 if (DeoptimizeALot) {
144 static int deopts = 0;
145 // Alternate between deoptimizing and raising an error (which will also cause a deopt)
146 if (deopts++ % 2 == 0) {
147 ResourceMark rm(THREAD);
148 THROW(vmSymbols::java_lang_OutOfMemoryError());
149 } else {
150 deopt_caller();
151 }
152 }
153 JRT_BLOCK_END;
154
155 if (ReduceInitialCardMarks) {
156 new_store_pre_barrier(thread);
157 }
158 JRT_END
159
160 void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) {
161 // After any safepoint, just before going back to compiled code,
162 // we inform the GC that we will be doing initializing writes to
163 // this object in the future without emitting card-marks, so
164 // GC may take any compensating steps.
165 // NOTE: Keep this code consistent with GraphKit::store_barrier.
166
167 oop new_obj = thread->vm_result();
168 if (new_obj == NULL) return;
169
170 assert(Universe::heap()->can_elide_tlab_store_barriers(),
171 "compiler must check this first");
172 // GC may decide to give back a safer copy of new_obj.
173 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
174 thread->set_vm_result(new_obj);
175 }
176
177 JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
178 assert(klass->is_klass(), "not a class");
179 assert(rank >= 1, "rank must be nonzero");
180 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
181 oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
182 thread->set_vm_result(obj);
183 JRT_END
184
185 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length))
186 oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK);
187 thread->set_vm_result(obj);
188 JRT_END
189
190 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror))
191 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(type_mirror));
192
193 if (klass == NULL) {
194 ResourceMark rm(THREAD);
195 THROW(vmSymbols::java_lang_InstantiationException());
196 }
197
198 // Create new instance (the receiver)
199 klass->check_valid_for_instantiation(false, CHECK);
200
201 // Make sure klass gets initialized
202 klass->initialize(CHECK);
203
204 oop obj = klass->allocate_instance(CHECK);
205 thread->set_vm_result(obj);
206 JRT_END
207
208 extern void vm_exit(int code);
209
210 // Enter this method from compiled code handler below. This is where we transition
211 // to VM mode. This is done as a helper routine so that the method called directly
212 // from compiled code does not have to transition to VM. This allows the entry
213 // method to see if the nmethod that we have just looked up a handler for has
214 // been deoptimized while we were in the vm. This simplifies the assembly code
215 // cpu directories.
216 //
217 // We are entering here from exception stub (via the entry method below)
218 // If there is a compiled exception handler in this method, we will continue there;
219 // otherwise we will unwind the stack and continue at the caller of top frame method
220 // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to
221 // control the area where we can allow a safepoint. After we exit the safepoint area we can
222 // check to see if the handler we are going to return is now in a nmethod that has
223 // been deoptimized. If that is the case we return the deopt blob
224 // unpack_with_exception entry instead. This makes life for the exception blob easier
225 // because making that same check and diverting is painful from assembly language.
226 JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, CompiledMethod*& cm))
227 // Reset method handle flag.
228 thread->set_is_method_handle_return(false);
229
230 Handle exception(thread, ex);
231 cm = CodeCache::find_compiled(pc);
232 assert(cm != NULL, "this is not a compiled method");
233 // Adjust the pc as needed/
234 if (cm->is_deopt_pc(pc)) {
235 RegisterMap map(thread, false);
236 frame exception_frame = thread->last_frame().sender(&map);
237 // if the frame isn't deopted then pc must not correspond to the caller of last_frame
238 assert(exception_frame.is_deoptimized_frame(), "must be deopted");
239 pc = exception_frame.pc();
240 }
241 #ifdef ASSERT
242 assert(exception.not_null(), "NULL exceptions should be handled by throw_exception");
243 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError
244 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
245 if (ExitVMOnVerifyError) vm_exit(-1);
246 ShouldNotReachHere();
247 }
248 #endif
249
250 // Check the stack guard pages and reenable them if necessary and there is
251 // enough space on the stack to do so. Use fast exceptions only if the guard
252 // pages are enabled.
253 bool guard_pages_enabled = thread->stack_guards_enabled();
254 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack();
255
256 if (JvmtiExport::can_post_on_exceptions()) {
257 // To ensure correct notification of exception catches and throws
258 // we have to deoptimize here. If we attempted to notify the
259 // catches and throws during this exception lookup it's possible
260 // we could deoptimize on the way out of the VM and end back in
261 // the interpreter at the throw site. This would result in double
262 // notifications since the interpreter would also notify about
263 // these same catches and throws as it unwound the frame.
264
265 RegisterMap reg_map(thread);
266 frame stub_frame = thread->last_frame();
267 frame caller_frame = stub_frame.sender(®_map);
268
269 // We don't really want to deoptimize the nmethod itself since we
270 // can actually continue in the exception handler ourselves but I
271 // don't see an easy way to have the desired effect.
272 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
273 assert(caller_is_deopted(), "Must be deoptimized");
274
275 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
276 }
277
278 // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions
279 if (guard_pages_enabled) {
280 address fast_continuation = cm->handler_for_exception_and_pc(exception, pc);
281 if (fast_continuation != NULL) {
282 // Set flag if return address is a method handle call site.
283 thread->set_is_method_handle_return(cm->is_method_handle_return(pc));
284 return fast_continuation;
285 }
286 }
287
288 // If the stack guard pages are enabled, check whether there is a handler in
289 // the current method. Otherwise (guard pages disabled), force an unwind and
290 // skip the exception cache update (i.e., just leave continuation==NULL).
291 address continuation = NULL;
292 if (guard_pages_enabled) {
293
294 // New exception handling mechanism can support inlined methods
295 // with exception handlers since the mappings are from PC to PC
296
297 // debugging support
298 // tracing
299 if (log_is_enabled(Info, exceptions)) {
300 ResourceMark rm;
301 stringStream tempst;
302 tempst.print("compiled method <%s>\n"
303 " at PC" INTPTR_FORMAT " for thread " INTPTR_FORMAT,
304 cm->method()->print_value_string(), p2i(pc), p2i(thread));
305 Exceptions::log_exception(exception, tempst);
306 }
307 // for AbortVMOnException flag
308 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
309
310 // Clear out the exception oop and pc since looking up an
311 // exception handler can cause class loading, which might throw an
312 // exception and those fields are expected to be clear during
313 // normal bytecode execution.
314 thread->clear_exception_oop_and_pc();
315
316 bool recursive_exception = false;
317 continuation = SharedRuntime::compute_compiled_exc_handler(cm, pc, exception, false, false, recursive_exception);
318 // If an exception was thrown during exception dispatch, the exception oop may have changed
319 thread->set_exception_oop(exception());
320 thread->set_exception_pc(pc);
321
322 // the exception cache is used only by non-implicit exceptions
323 // Update the exception cache only when there didn't happen
324 // another exception during the computation of the compiled
325 // exception handler. Checking for exception oop equality is not
326 // sufficient because some exceptions are pre-allocated and reused.
327 if (continuation != NULL && !recursive_exception && !SharedRuntime::deopt_blob()->contains(continuation)) {
328 cm->add_handler_for_exception_and_pc(exception, pc, continuation);
329 }
330 }
331
332 // Set flag if return address is a method handle call site.
333 thread->set_is_method_handle_return(cm->is_method_handle_return(pc));
334
335 if (log_is_enabled(Info, exceptions)) {
336 ResourceMark rm;
337 log_info(exceptions)("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT
338 " for exception thrown at PC " PTR_FORMAT,
339 p2i(thread), p2i(continuation), p2i(pc));
340 }
341
342 return continuation;
343 JRT_END
344
345 // Enter this method from compiled code only if there is a Java exception handler
346 // in the method handling the exception.
347 // We are entering here from exception stub. We don't do a normal VM transition here.
348 // We do it in a helper. This is so we can check to see if the nmethod we have just
349 // searched for an exception handler has been deoptimized in the meantime.
350 address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) {
351 oop exception = thread->exception_oop();
352 address pc = thread->exception_pc();
353 // Still in Java mode
354 DEBUG_ONLY(ResetNoHandleMark rnhm);
355 CompiledMethod* cm = NULL;
356 address continuation = NULL;
357 {
358 // Enter VM mode by calling the helper
359 ResetNoHandleMark rnhm;
360 continuation = exception_handler_for_pc_helper(thread, exception, pc, cm);
361 }
362 // Back in JAVA, use no oops DON'T safepoint
363
364 // Now check to see if the compiled method we were called from is now deoptimized.
365 // If so we must return to the deopt blob and deoptimize the nmethod
366 if (cm != NULL && caller_is_deopted()) {
367 continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
368 }
369
370 assert(continuation != NULL, "no handler found");
371 return continuation;
372 }
373
374 JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock))
375 IF_TRACE_jvmci_3 {
376 char type[O_BUFLEN];
377 obj->klass()->name()->as_C_string(type, O_BUFLEN);
378 markOop mark = obj->mark();
379 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));
380 tty->flush();
381 }
382 #ifdef ASSERT
383 if (PrintBiasedLockingStatistics) {
384 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
385 }
386 #endif
387 Handle h_obj(thread, obj);
388 if (UseBiasedLocking) {
389 // Retry fast entry if bias is revoked to avoid unnecessary inflation
390 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
391 } else {
392 if (JVMCIUseFastLocking) {
393 // When using fast locking, the compiled code has already tried the fast case
394 ObjectSynchronizer::slow_enter(h_obj, lock, THREAD);
395 } else {
396 ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD);
397 }
398 }
399 TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj));
400 JRT_END
401
402 JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock))
403 assert(thread == JavaThread::current(), "threads must correspond");
404 assert(thread->last_Java_sp(), "last_Java_sp must be set");
405 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
406 EXCEPTION_MARK;
407
408 #ifdef DEBUG
409 if (!oopDesc::is_oop(obj)) {
410 ResetNoHandleMark rhm;
411 nmethod* method = thread->last_frame().cb()->as_nmethod_or_null();
412 if (method != NULL) {
413 tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj));
414 }
415 thread->print_stack_on(tty);
416 assert(false, "invalid lock object pointer dected");
417 }
418 #endif
419
420 if (JVMCIUseFastLocking) {
421 // When using fast locking, the compiled code has already tried the fast case
422 ObjectSynchronizer::slow_exit(obj, lock, THREAD);
423 } else {
424 ObjectSynchronizer::fast_exit(obj, lock, THREAD);
425 }
426 IF_TRACE_jvmci_3 {
427 char type[O_BUFLEN];
428 obj->klass()->name()->as_C_string(type, O_BUFLEN);
429 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));
430 tty->flush();
431 }
432 JRT_END
433
434 JRT_ENTRY(void, JVMCIRuntime::throw_and_post_jvmti_exception(JavaThread* thread, const char* exception, const char* message))
435 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
436 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);
437 JRT_END
438
439 JRT_ENTRY(void, JVMCIRuntime::throw_klass_external_name_exception(JavaThread* thread, const char* exception, Klass* klass))
440 ResourceMark rm(thread);
441 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
442 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, klass->external_name());
443 JRT_END
444
445 JRT_ENTRY(void, JVMCIRuntime::throw_class_cast_exception(JavaThread* thread, const char* exception, Klass* caster_klass, Klass* target_klass))
446 ResourceMark rm(thread);
447 const char* message = SharedRuntime::generate_class_cast_message(caster_klass, target_klass);
448 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
449 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);
450 JRT_END
451
452 JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, bool as_string, bool newline))
453 ttyLocker ttyl;
454
455 if (obj == NULL) {
456 tty->print("NULL");
457 } else if (oopDesc::is_oop_or_null(obj, true) && (!as_string || !java_lang_String::is_instance(obj))) {
458 if (oopDesc::is_oop_or_null(obj, true)) {
459 char buf[O_BUFLEN];
460 tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj));
461 } else {
462 tty->print(INTPTR_FORMAT, p2i(obj));
463 }
464 } else {
465 ResourceMark rm;
466 assert(obj != NULL && java_lang_String::is_instance(obj), "must be");
467 char *buf = java_lang_String::as_utf8_string(obj);
468 tty->print_raw(buf);
469 }
470 if (newline) {
471 tty->cr();
472 }
473 JRT_END
474
475 JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj))
476 thread->satb_mark_queue().enqueue(obj);
477 JRT_END
478
479 JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr))
480 thread->dirty_card_queue().enqueue(card_addr);
481 JRT_END
482
483 JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child))
484 bool ret = true;
485 if(!Universe::heap()->is_in_closed_subset(parent)) {
486 tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent));
487 parent->print();
488 ret=false;
489 }
490 if(!Universe::heap()->is_in_closed_subset(child)) {
491 tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child));
492 child->print();
493 ret=false;
494 }
495 return (jint)ret;
496 JRT_END
497
498 JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value))
499 ResourceMark rm;
500 const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where;
501 char *detail_msg = NULL;
502 if (format != 0L) {
503 const char* buf = (char*) (address) format;
504 size_t detail_msg_length = strlen(buf) * 2;
505 detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length);
506 jio_snprintf(detail_msg, detail_msg_length, buf, value);
507 report_vm_error(__FILE__, __LINE__, error_msg, "%s", detail_msg);
508 } else {
509 report_vm_error(__FILE__, __LINE__, error_msg);
510 }
511 JRT_END
512
513 JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread))
514 oop exception = thread->exception_oop();
515 assert(exception != NULL, "npe");
516 thread->set_exception_oop(NULL);
517 thread->set_exception_pc(0);
518 return exception;
519 JRT_END
520
521 PRAGMA_DIAG_PUSH
522 PRAGMA_FORMAT_NONLITERAL_IGNORED
523 JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3))
524 ResourceMark rm;
525 assert(format != NULL && java_lang_String::is_instance(format), "must be");
526 char *buf = java_lang_String::as_utf8_string(format);
527 tty->print((const char*)buf, v1, v2, v3);
528 JRT_END
529 PRAGMA_DIAG_POP
530
531 static void decipher(jlong v, bool ignoreZero) {
532 if (v != 0 || !ignoreZero) {
533 void* p = (void *)(address) v;
534 CodeBlob* cb = CodeCache::find_blob(p);
535 if (cb) {
536 if (cb->is_nmethod()) {
537 char buf[O_BUFLEN];
538 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()));
539 return;
540 }
541 cb->print_value_on(tty);
542 return;
543 }
544 if (Universe::heap()->is_in(p)) {
545 oop obj = oop(p);
546 obj->print_value_on(tty);
547 return;
548 }
549 tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v);
550 }
551 }
552
553 PRAGMA_DIAG_PUSH
554 PRAGMA_FORMAT_NONLITERAL_IGNORED
555 JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3))
556 ResourceMark rm;
557 const char *buf = (const char*) (address) format;
558 if (vmError) {
559 if (buf != NULL) {
560 fatal(buf, v1, v2, v3);
561 } else {
562 fatal("<anonymous error>");
563 }
564 } else if (buf != NULL) {
565 tty->print(buf, v1, v2, v3);
566 } else {
567 assert(v2 == 0, "v2 != 0");
568 assert(v3 == 0, "v3 != 0");
569 decipher(v1, false);
570 }
571 JRT_END
572 PRAGMA_DIAG_POP
573
574 JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline))
575 union {
576 jlong l;
577 jdouble d;
578 jfloat f;
579 } uu;
580 uu.l = value;
581 switch (typeChar) {
582 case 'Z': tty->print(value == 0 ? "false" : "true"); break;
583 case 'B': tty->print("%d", (jbyte) value); break;
584 case 'C': tty->print("%c", (jchar) value); break;
585 case 'S': tty->print("%d", (jshort) value); break;
586 case 'I': tty->print("%d", (jint) value); break;
587 case 'F': tty->print("%f", uu.f); break;
588 case 'J': tty->print(JLONG_FORMAT, value); break;
589 case 'D': tty->print("%lf", uu.d); break;
590 default: assert(false, "unknown typeChar"); break;
591 }
592 if (newline) {
593 tty->cr();
594 }
595 JRT_END
596
597 JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj))
598 return (jint) obj->identity_hash();
599 JRT_END
600
601 JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted))
602 Handle receiverHandle(thread, receiver);
603 // A nested ThreadsListHandle may require the Threads_lock which
604 // requires thread_in_vm which is why this method cannot be JRT_LEAF.
605 ThreadsListHandle tlh;
606
607 JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle());
608 if (receiverThread == NULL || (EnableThreadSMRExtraValidityChecks && !tlh.includes(receiverThread))) {
609 // The other thread may exit during this process, which is ok so return false.
610 return JNI_FALSE;
611 } else {
612 return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0);
613 }
614 JRT_END
615
616 JRT_ENTRY(int, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value))
617 deopt_caller();
618 return value;
619 JRT_END
620
621 void JVMCIRuntime::force_initialization(TRAPS) {
622 JVMCIRuntime::initialize_well_known_classes(CHECK);
623
624 ResourceMark rm;
625 TempNewSymbol getCompiler = SymbolTable::new_symbol("getCompiler", CHECK);
626 TempNewSymbol sig = SymbolTable::new_symbol("()Ljdk/vm/ci/runtime/JVMCICompiler;", CHECK);
627 Handle jvmciRuntime = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK);
628 JavaValue result(T_OBJECT);
629 JavaCalls::call_virtual(&result, jvmciRuntime, HotSpotJVMCIRuntime::klass(), getCompiler, sig, CHECK);
630 }
631
632 // private static JVMCIRuntime JVMCI.initializeRuntime()
633 JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c))
634 if (!EnableJVMCI) {
635 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
636 }
637 JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL);
638 jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL);
639 return ret;
640 JVM_END
641
642 Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) {
643 TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle()));
644 Klass* klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle()));
645 TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle()));
646 TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle()));
647 JavaValue result(T_OBJECT);
648 if (args == NULL) {
649 JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle()));
650 } else {
651 JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle()));
652 }
653 return Handle(THREAD, (oop)result.get_jobject());
654 }
655
656 void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) {
657 guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime");
658 JVMCIRuntime::initialize_well_known_classes(CHECK);
659 // This should only be called in the context of the JVMCI class being initialized
660 InstanceKlass* klass = SystemDictionary::JVMCI_klass();
661 guarantee(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD),
662 "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization");
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 void JVMCIRuntime::initialize_JVMCI(TRAPS) {
691 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
692 callStatic("jdk/vm/ci/runtime/JVMCI",
693 "getRuntime",
694 "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK);
695 }
696 assert(_HotSpotJVMCIRuntime_initialized == true, "what?");
697 }
698
699 bool JVMCIRuntime::can_initialize_JVMCI() {
700 // Initializing JVMCI requires the module system to be initialized past phase 3.
701 // The JVMCI API itself isn't available until phase 2 and ServiceLoader (which
702 // JVMCI initialization requires) isn't usable until after phase 3. Testing
703 // whether the system loader is initialized satisfies all these invariants.
704 if (SystemDictionary::java_system_loader() == NULL) {
705 return false;
706 }
707 assert(Universe::is_module_initialized(), "must be");
708 return true;
709 }
710
711 void JVMCIRuntime::initialize_well_known_classes(TRAPS) {
712 if (JVMCIRuntime::_well_known_classes_initialized == false) {
713 guarantee(can_initialize_JVMCI(), "VM is not yet sufficiently booted to initialize JVMCI");
714 SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID;
715 SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK);
716 JVMCIJavaClasses::compute_offsets(CHECK);
717 JVMCIRuntime::_well_known_classes_initialized = true;
718 }
719 }
720
721 void JVMCIRuntime::metadata_do(void f(Metadata*)) {
722 // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in
723 // the SystemDictionary well known classes should ensure the other
724 // classes have already been loaded, so make sure their order in the
725 // table enforces that.
726 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) <
727 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
728 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) <
729 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
730 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) <
731 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
732
733 if (HotSpotJVMCIMetaAccessContext::klass() == NULL ||
734 !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) {
735 // Nothing could be registered yet
736 return;
737 }
738
739 // WeakReference<HotSpotJVMCIMetaAccessContext>[]
740 objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts();
741 if (allContexts == NULL) {
742 return;
743 }
744
745 // These must be loaded at this point but the linking state doesn't matter.
746 assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded");
747 assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded");
748 assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded");
749
750 for (int i = 0; i < allContexts->length(); i++) {
751 oop ref = allContexts->obj_at(i);
752 if (ref != NULL) {
753 oop referent = java_lang_ref_Reference::referent(ref);
754 if (referent != NULL) {
755 // Chunked Object[] with last element pointing to next chunk
756 objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent);
757 while (metadataRoots != NULL) {
758 for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) {
759 oop reference = metadataRoots->obj_at(typeIndex);
760 if (reference == NULL) {
761 continue;
762 }
763 oop metadataRoot = java_lang_ref_Reference::referent(reference);
764 if (metadataRoot == NULL) {
765 continue;
766 }
767 if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) {
768 Method* method = CompilerToVM::asMethod(metadataRoot);
769 f(method);
770 } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) {
771 ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot);
772 f(constantPool);
773 } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) {
774 Klass* klass = CompilerToVM::asKlass(metadataRoot);
775 f(klass);
776 } else {
777 metadataRoot->print();
778 ShouldNotReachHere();
779 }
780 }
781 metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1);
782 assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type");
783 }
784 }
785 }
786 }
787 }
788
789 // private static void CompilerToVM.registerNatives()
790 JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass))
791 if (!EnableJVMCI) {
792 THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled");
793 }
794
795 #ifdef _LP64
796 #ifndef SPARC
797 uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end();
798 uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024;
799 guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)");
800 #endif // !SPARC
801 #else
802 fatal("check TLAB allocation code for address space conflicts");
803 #endif // _LP64
804
805 JVMCIRuntime::initialize_well_known_classes(CHECK);
806
807 {
808 ThreadToNativeFromVM trans(thread);
809 env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count());
810 }
811 JVM_END
812
813 void JVMCIRuntime::shutdown(TRAPS) {
814 if (_HotSpotJVMCIRuntime_instance != NULL) {
815 _shutdown_called = true;
816 HandleMark hm(THREAD);
817 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
818 JavaValue result(T_VOID);
819 JavaCallArguments args;
820 args.push_oop(receiver);
821 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
822 }
823 }
824
825 CompLevel JVMCIRuntime::adjust_comp_level_inner(const methodHandle& method, bool is_osr, CompLevel level, JavaThread* thread) {
826 JVMCICompiler* compiler = JVMCICompiler::instance(false, thread);
827 if (compiler != NULL && compiler->is_bootstrapping()) {
828 return level;
829 }
830 if (!is_HotSpotJVMCIRuntime_initialized() || _comp_level_adjustment == JVMCIRuntime::none) {
831 // JVMCI cannot participate in compilation scheduling until
832 // JVMCI is initialized and indicates it wants to participate.
833 return level;
834 }
835
836 #define CHECK_RETURN THREAD); \
837 if (HAS_PENDING_EXCEPTION) { \
838 Handle exception(THREAD, PENDING_EXCEPTION); \
839 CLEAR_PENDING_EXCEPTION; \
840 \
841 if (exception->is_a(SystemDictionary::ThreadDeath_klass())) { \
842 /* In the special case of ThreadDeath, we need to reset the */ \
843 /* pending async exception so that it is propagated. */ \
844 thread->set_pending_async_exception(exception()); \
845 return level; \
846 } \
847 tty->print("Uncaught exception while adjusting compilation level: "); \
848 java_lang_Throwable::print(exception(), tty); \
849 tty->cr(); \
850 java_lang_Throwable::print_stack_trace(exception, tty); \
851 if (HAS_PENDING_EXCEPTION) { \
852 CLEAR_PENDING_EXCEPTION; \
853 } \
854 return level; \
855 } \
856 (void)(0
857
858
859 Thread* THREAD = thread;
860 HandleMark hm;
861 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_RETURN);
862 Handle name;
863 Handle sig;
864 if (_comp_level_adjustment == JVMCIRuntime::by_full_signature) {
865 name = java_lang_String::create_from_symbol(method->name(), CHECK_RETURN);
866 sig = java_lang_String::create_from_symbol(method->signature(), CHECK_RETURN);
867 } else {
868 name = Handle();
869 sig = Handle();
870 }
871
872 JavaValue result(T_INT);
873 JavaCallArguments args;
874 args.push_oop(receiver);
875 args.push_oop(Handle(THREAD, method->method_holder()->java_mirror()));
876 args.push_oop(name);
877 args.push_oop(sig);
878 args.push_int(is_osr);
879 args.push_int(level);
880 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::adjustCompilationLevel_name(),
881 vmSymbols::adjustCompilationLevel_signature(), &args, CHECK_RETURN);
882
883 int comp_level = result.get_jint();
884 if (comp_level < CompLevel_none || comp_level > CompLevel_full_optimization) {
885 assert(false, "compilation level out of bounds");
886 return level;
887 }
888 return (CompLevel) comp_level;
889 #undef CHECK_RETURN
890 }
891
892 void JVMCIRuntime::bootstrap_finished(TRAPS) {
893 HandleMark hm(THREAD);
894 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
895 JavaValue result(T_VOID);
896 JavaCallArguments args;
897 args.push_oop(receiver);
898 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::bootstrapFinished_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
899 }
900
901 bool JVMCIRuntime::treat_as_trivial(Method* method) {
902 if (_HotSpotJVMCIRuntime_initialized) {
903 for (int i = 0; i < _trivial_prefixes_count; i++) {
904 if (method->method_holder()->name()->starts_with(_trivial_prefixes[i])) {
905 return true;
906 }
907 }
908 }
909 return false;
910 }