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