1 /*
2 * Copyright (c) 2012, 2018, 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/allocation.inline.hpp"
38 #include "memory/oopFactory.hpp"
39 #include "memory/resourceArea.hpp"
40 #include "oops/oop.inline.hpp"
41 #include "oops/objArrayOop.inline.hpp"
42 #include "runtime/biasedLocking.hpp"
43 #include "runtime/interfaceSupport.hpp"
44 #include "runtime/jniHandles.inline.hpp"
45 #include "runtime/reflection.hpp"
46 #include "runtime/sharedRuntime.hpp"
47 #include "runtime/threadSMR.hpp"
48 #include "utilities/debug.hpp"
49 #include "utilities/defaultStream.hpp"
50 #include "utilities/macros.hpp"
51
52 #if defined(_MSC_VER)
53 #define strtoll _strtoi64
54 #endif
55
56 jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL;
57 bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false;
58 bool JVMCIRuntime::_well_known_classes_initialized = false;
59 int JVMCIRuntime::_trivial_prefixes_count = 0;
60 char** JVMCIRuntime::_trivial_prefixes = NULL;
61 JVMCIRuntime::CompLevelAdjustment JVMCIRuntime::_comp_level_adjustment = JVMCIRuntime::none;
62 bool JVMCIRuntime::_shutdown_called = false;
63
64 BasicType JVMCIRuntime::kindToBasicType(Handle kind, TRAPS) {
65 if (kind.is_null()) {
66 THROW_(vmSymbols::java_lang_NullPointerException(), T_ILLEGAL);
67 }
68 jchar ch = JavaKind::typeChar(kind);
69 switch(ch) {
70 case 'Z': return T_BOOLEAN;
71 case 'B': return T_BYTE;
72 case 'S': return T_SHORT;
73 case 'C': return T_CHAR;
74 case 'I': return T_INT;
75 case 'F': return T_FLOAT;
76 case 'J': return T_LONG;
77 case 'D': return T_DOUBLE;
78 case 'A': return T_OBJECT;
79 case '-': return T_ILLEGAL;
80 default:
81 JVMCI_ERROR_(T_ILLEGAL, "unexpected Kind: %c", ch);
82 }
83 }
84
85 // Simple helper to see if the caller of a runtime stub which
86 // entered the VM has been deoptimized
87
88 static bool caller_is_deopted() {
89 JavaThread* thread = JavaThread::current();
90 RegisterMap reg_map(thread, false);
91 frame runtime_frame = thread->last_frame();
92 frame caller_frame = runtime_frame.sender(®_map);
93 assert(caller_frame.is_compiled_frame(), "must be compiled");
94 return caller_frame.is_deoptimized_frame();
95 }
96
97 // Stress deoptimization
98 static void deopt_caller() {
99 if ( !caller_is_deopted()) {
100 JavaThread* thread = JavaThread::current();
101 RegisterMap reg_map(thread, false);
102 frame runtime_frame = thread->last_frame();
103 frame caller_frame = runtime_frame.sender(®_map);
104 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
105 assert(caller_is_deopted(), "Must be deoptimized");
106 }
107 }
108
109 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass))
110 JRT_BLOCK;
111 assert(klass->is_klass(), "not a class");
112 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
113 InstanceKlass* ik = InstanceKlass::cast(klass);
114 ik->check_valid_for_instantiation(true, CHECK);
115 // make sure klass is initialized
116 ik->initialize(CHECK);
117 // allocate instance and return via TLS
118 oop obj = ik->allocate_instance(CHECK);
119 thread->set_vm_result(obj);
120 JRT_BLOCK_END;
121 SharedRuntime::on_slowpath_allocation_exit(thread);
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 SharedRuntime::on_slowpath_allocation_exit(thread);
154 JRT_END
155
156 JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
157 assert(klass->is_klass(), "not a class");
158 assert(rank >= 1, "rank must be nonzero");
159 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
160 oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
161 thread->set_vm_result(obj);
162 JRT_END
163
164 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length))
165 oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK);
166 thread->set_vm_result(obj);
167 JRT_END
168
169 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror))
170 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(type_mirror));
171
172 if (klass == NULL) {
173 ResourceMark rm(THREAD);
174 THROW(vmSymbols::java_lang_InstantiationException());
175 }
176
177 // Create new instance (the receiver)
178 klass->check_valid_for_instantiation(false, CHECK);
179
180 // Make sure klass gets initialized
181 klass->initialize(CHECK);
182
183 oop obj = klass->allocate_instance(CHECK);
184 thread->set_vm_result(obj);
185 JRT_END
186
187 extern void vm_exit(int code);
188
189 // Enter this method from compiled code handler below. This is where we transition
190 // to VM mode. This is done as a helper routine so that the method called directly
191 // from compiled code does not have to transition to VM. This allows the entry
192 // method to see if the nmethod that we have just looked up a handler for has
193 // been deoptimized while we were in the vm. This simplifies the assembly code
194 // cpu directories.
195 //
196 // We are entering here from exception stub (via the entry method below)
197 // If there is a compiled exception handler in this method, we will continue there;
198 // otherwise we will unwind the stack and continue at the caller of top frame method
199 // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to
200 // control the area where we can allow a safepoint. After we exit the safepoint area we can
201 // check to see if the handler we are going to return is now in a nmethod that has
202 // been deoptimized. If that is the case we return the deopt blob
203 // unpack_with_exception entry instead. This makes life for the exception blob easier
204 // because making that same check and diverting is painful from assembly language.
205 JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, CompiledMethod*& cm))
206 // Reset method handle flag.
207 thread->set_is_method_handle_return(false);
208
209 Handle exception(thread, ex);
210 cm = CodeCache::find_compiled(pc);
211 assert(cm != NULL, "this is not a compiled method");
212 // Adjust the pc as needed/
213 if (cm->is_deopt_pc(pc)) {
214 RegisterMap map(thread, false);
215 frame exception_frame = thread->last_frame().sender(&map);
216 // if the frame isn't deopted then pc must not correspond to the caller of last_frame
217 assert(exception_frame.is_deoptimized_frame(), "must be deopted");
218 pc = exception_frame.pc();
219 }
220 #ifdef ASSERT
221 assert(exception.not_null(), "NULL exceptions should be handled by throw_exception");
222 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError
223 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
224 if (ExitVMOnVerifyError) vm_exit(-1);
225 ShouldNotReachHere();
226 }
227 #endif
228
229 // Check the stack guard pages and reenable them if necessary and there is
230 // enough space on the stack to do so. Use fast exceptions only if the guard
231 // pages are enabled.
232 bool guard_pages_enabled = thread->stack_guards_enabled();
233 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack();
234
235 if (JvmtiExport::can_post_on_exceptions()) {
236 // To ensure correct notification of exception catches and throws
237 // we have to deoptimize here. If we attempted to notify the
238 // catches and throws during this exception lookup it's possible
239 // we could deoptimize on the way out of the VM and end back in
240 // the interpreter at the throw site. This would result in double
241 // notifications since the interpreter would also notify about
242 // these same catches and throws as it unwound the frame.
243
244 RegisterMap reg_map(thread);
245 frame stub_frame = thread->last_frame();
246 frame caller_frame = stub_frame.sender(®_map);
247
248 // We don't really want to deoptimize the nmethod itself since we
249 // can actually continue in the exception handler ourselves but I
250 // don't see an easy way to have the desired effect.
251 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
252 assert(caller_is_deopted(), "Must be deoptimized");
253
254 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
255 }
256
257 // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions
258 if (guard_pages_enabled) {
259 address fast_continuation = cm->handler_for_exception_and_pc(exception, pc);
260 if (fast_continuation != NULL) {
261 // Set flag if return address is a method handle call site.
262 thread->set_is_method_handle_return(cm->is_method_handle_return(pc));
263 return fast_continuation;
264 }
265 }
266
267 // If the stack guard pages are enabled, check whether there is a handler in
268 // the current method. Otherwise (guard pages disabled), force an unwind and
269 // skip the exception cache update (i.e., just leave continuation==NULL).
270 address continuation = NULL;
271 if (guard_pages_enabled) {
272
273 // New exception handling mechanism can support inlined methods
274 // with exception handlers since the mappings are from PC to PC
275
276 // debugging support
277 // tracing
278 if (log_is_enabled(Info, exceptions)) {
279 ResourceMark rm;
280 stringStream tempst;
281 tempst.print("compiled method <%s>\n"
282 " at PC" INTPTR_FORMAT " for thread " INTPTR_FORMAT,
283 cm->method()->print_value_string(), p2i(pc), p2i(thread));
284 Exceptions::log_exception(exception, tempst);
285 }
286 // for AbortVMOnException flag
287 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
288
289 // Clear out the exception oop and pc since looking up an
290 // exception handler can cause class loading, which might throw an
291 // exception and those fields are expected to be clear during
292 // normal bytecode execution.
293 thread->clear_exception_oop_and_pc();
294
295 bool recursive_exception = false;
296 continuation = SharedRuntime::compute_compiled_exc_handler(cm, pc, exception, false, false, recursive_exception);
297 // If an exception was thrown during exception dispatch, the exception oop may have changed
298 thread->set_exception_oop(exception());
299 thread->set_exception_pc(pc);
300
301 // the exception cache is used only by non-implicit exceptions
302 // Update the exception cache only when there didn't happen
303 // another exception during the computation of the compiled
304 // exception handler. Checking for exception oop equality is not
305 // sufficient because some exceptions are pre-allocated and reused.
306 if (continuation != NULL && !recursive_exception && !SharedRuntime::deopt_blob()->contains(continuation)) {
307 cm->add_handler_for_exception_and_pc(exception, pc, continuation);
308 }
309 }
310
311 // Set flag if return address is a method handle call site.
312 thread->set_is_method_handle_return(cm->is_method_handle_return(pc));
313
314 if (log_is_enabled(Info, exceptions)) {
315 ResourceMark rm;
316 log_info(exceptions)("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT
317 " for exception thrown at PC " PTR_FORMAT,
318 p2i(thread), p2i(continuation), p2i(pc));
319 }
320
321 return continuation;
322 JRT_END
323
324 // Enter this method from compiled code only if there is a Java exception handler
325 // in the method handling the exception.
326 // We are entering here from exception stub. We don't do a normal VM transition here.
327 // We do it in a helper. This is so we can check to see if the nmethod we have just
328 // searched for an exception handler has been deoptimized in the meantime.
329 address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) {
330 oop exception = thread->exception_oop();
331 address pc = thread->exception_pc();
332 // Still in Java mode
333 DEBUG_ONLY(ResetNoHandleMark rnhm);
334 CompiledMethod* cm = NULL;
335 address continuation = NULL;
336 {
337 // Enter VM mode by calling the helper
338 ResetNoHandleMark rnhm;
339 continuation = exception_handler_for_pc_helper(thread, exception, pc, cm);
340 }
341 // Back in JAVA, use no oops DON'T safepoint
342
343 // Now check to see if the compiled method we were called from is now deoptimized.
344 // If so we must return to the deopt blob and deoptimize the nmethod
345 if (cm != NULL && caller_is_deopted()) {
346 continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
347 }
348
349 assert(continuation != NULL, "no handler found");
350 return continuation;
351 }
352
353 JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock))
354 IF_TRACE_jvmci_3 {
355 char type[O_BUFLEN];
356 obj->klass()->name()->as_C_string(type, O_BUFLEN);
357 markOop mark = obj->mark();
358 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));
359 tty->flush();
360 }
361 #ifdef ASSERT
362 if (PrintBiasedLockingStatistics) {
363 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
364 }
365 #endif
366 Handle h_obj(thread, obj);
367 if (UseBiasedLocking) {
368 // Retry fast entry if bias is revoked to avoid unnecessary inflation
369 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
370 } else {
371 if (JVMCIUseFastLocking) {
372 // When using fast locking, the compiled code has already tried the fast case
373 ObjectSynchronizer::slow_enter(h_obj, lock, THREAD);
374 } else {
375 ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD);
376 }
377 }
378 TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj));
379 JRT_END
380
381 JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock))
382 assert(thread == JavaThread::current(), "threads must correspond");
383 assert(thread->last_Java_sp(), "last_Java_sp must be set");
384 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
385 EXCEPTION_MARK;
386
387 #ifdef DEBUG
388 if (!oopDesc::is_oop(obj)) {
389 ResetNoHandleMark rhm;
390 nmethod* method = thread->last_frame().cb()->as_nmethod_or_null();
391 if (method != NULL) {
392 tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj));
393 }
394 thread->print_stack_on(tty);
395 assert(false, "invalid lock object pointer dected");
396 }
397 #endif
398
399 if (JVMCIUseFastLocking) {
400 // When using fast locking, the compiled code has already tried the fast case
401 ObjectSynchronizer::slow_exit(obj, lock, THREAD);
402 } else {
403 ObjectSynchronizer::fast_exit(obj, lock, THREAD);
404 }
405 IF_TRACE_jvmci_3 {
406 char type[O_BUFLEN];
407 obj->klass()->name()->as_C_string(type, O_BUFLEN);
408 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));
409 tty->flush();
410 }
411 JRT_END
412
413 JRT_ENTRY(void, JVMCIRuntime::throw_and_post_jvmti_exception(JavaThread* thread, const char* exception, const char* message))
414 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
415 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);
416 JRT_END
417
418 JRT_ENTRY(void, JVMCIRuntime::throw_klass_external_name_exception(JavaThread* thread, const char* exception, Klass* klass))
419 ResourceMark rm(thread);
420 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
421 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, klass->external_name());
422 JRT_END
423
424 JRT_ENTRY(void, JVMCIRuntime::throw_class_cast_exception(JavaThread* thread, const char* exception, Klass* caster_klass, Klass* target_klass))
425 ResourceMark rm(thread);
426 const char* message = SharedRuntime::generate_class_cast_message(caster_klass, target_klass);
427 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
428 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);
429 JRT_END
430
431 JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, bool as_string, bool newline))
432 ttyLocker ttyl;
433
434 if (obj == NULL) {
435 tty->print("NULL");
436 } else if (oopDesc::is_oop_or_null(obj, true) && (!as_string || !java_lang_String::is_instance(obj))) {
437 if (oopDesc::is_oop_or_null(obj, true)) {
438 char buf[O_BUFLEN];
439 tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj));
440 } else {
441 tty->print(INTPTR_FORMAT, p2i(obj));
442 }
443 } else {
444 ResourceMark rm;
445 assert(obj != NULL && java_lang_String::is_instance(obj), "must be");
446 char *buf = java_lang_String::as_utf8_string(obj);
447 tty->print_raw(buf);
448 }
449 if (newline) {
450 tty->cr();
451 }
452 JRT_END
453
454 JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj))
455 thread->satb_mark_queue().enqueue(obj);
456 JRT_END
457
458 JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr))
459 thread->dirty_card_queue().enqueue(card_addr);
460 JRT_END
461
462 JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child))
463 bool ret = true;
464 if(!Universe::heap()->is_in_closed_subset(parent)) {
465 tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent));
466 parent->print();
467 ret=false;
468 }
469 if(!Universe::heap()->is_in_closed_subset(child)) {
470 tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child));
471 child->print();
472 ret=false;
473 }
474 return (jint)ret;
475 JRT_END
476
477 JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value))
478 ResourceMark rm;
479 const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where;
480 char *detail_msg = NULL;
481 if (format != 0L) {
482 const char* buf = (char*) (address) format;
483 size_t detail_msg_length = strlen(buf) * 2;
484 detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length);
485 jio_snprintf(detail_msg, detail_msg_length, buf, value);
486 report_vm_error(__FILE__, __LINE__, error_msg, "%s", detail_msg);
487 } else {
488 report_vm_error(__FILE__, __LINE__, error_msg);
489 }
490 JRT_END
491
492 JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread))
493 oop exception = thread->exception_oop();
494 assert(exception != NULL, "npe");
495 thread->set_exception_oop(NULL);
496 thread->set_exception_pc(0);
497 return exception;
498 JRT_END
499
500 PRAGMA_DIAG_PUSH
501 PRAGMA_FORMAT_NONLITERAL_IGNORED
502 JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3))
503 ResourceMark rm;
504 assert(format != NULL && java_lang_String::is_instance(format), "must be");
505 char *buf = java_lang_String::as_utf8_string(format);
506 tty->print((const char*)buf, v1, v2, v3);
507 JRT_END
508 PRAGMA_DIAG_POP
509
510 static void decipher(jlong v, bool ignoreZero) {
511 if (v != 0 || !ignoreZero) {
512 void* p = (void *)(address) v;
513 CodeBlob* cb = CodeCache::find_blob(p);
514 if (cb) {
515 if (cb->is_nmethod()) {
516 char buf[O_BUFLEN];
517 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()));
518 return;
519 }
520 cb->print_value_on(tty);
521 return;
522 }
523 if (Universe::heap()->is_in(p)) {
524 oop obj = oop(p);
525 obj->print_value_on(tty);
526 return;
527 }
528 tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v);
529 }
530 }
531
532 PRAGMA_DIAG_PUSH
533 PRAGMA_FORMAT_NONLITERAL_IGNORED
534 JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3))
535 ResourceMark rm;
536 const char *buf = (const char*) (address) format;
537 if (vmError) {
538 if (buf != NULL) {
539 fatal(buf, v1, v2, v3);
540 } else {
541 fatal("<anonymous error>");
542 }
543 } else if (buf != NULL) {
544 tty->print(buf, v1, v2, v3);
545 } else {
546 assert(v2 == 0, "v2 != 0");
547 assert(v3 == 0, "v3 != 0");
548 decipher(v1, false);
549 }
550 JRT_END
551 PRAGMA_DIAG_POP
552
553 JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline))
554 union {
555 jlong l;
556 jdouble d;
557 jfloat f;
558 } uu;
559 uu.l = value;
560 switch (typeChar) {
561 case 'Z': tty->print(value == 0 ? "false" : "true"); break;
562 case 'B': tty->print("%d", (jbyte) value); break;
563 case 'C': tty->print("%c", (jchar) value); break;
564 case 'S': tty->print("%d", (jshort) value); break;
565 case 'I': tty->print("%d", (jint) value); break;
566 case 'F': tty->print("%f", uu.f); break;
567 case 'J': tty->print(JLONG_FORMAT, value); break;
568 case 'D': tty->print("%lf", uu.d); break;
569 default: assert(false, "unknown typeChar"); break;
570 }
571 if (newline) {
572 tty->cr();
573 }
574 JRT_END
575
576 JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj))
577 return (jint) obj->identity_hash();
578 JRT_END
579
580 JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted))
581 Handle receiverHandle(thread, receiver);
582 // A nested ThreadsListHandle may require the Threads_lock which
583 // requires thread_in_vm which is why this method cannot be JRT_LEAF.
584 ThreadsListHandle tlh;
585
586 JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle());
587 if (receiverThread == NULL || (EnableThreadSMRExtraValidityChecks && !tlh.includes(receiverThread))) {
588 // The other thread may exit during this process, which is ok so return false.
589 return JNI_FALSE;
590 } else {
591 return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0);
592 }
593 JRT_END
594
595 JRT_ENTRY(int, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value))
596 deopt_caller();
597 return value;
598 JRT_END
599
600 void JVMCIRuntime::force_initialization(TRAPS) {
601 JVMCIRuntime::initialize_well_known_classes(CHECK);
602
603 ResourceMark rm;
604 TempNewSymbol getCompiler = SymbolTable::new_symbol("getCompiler", CHECK);
605 TempNewSymbol sig = SymbolTable::new_symbol("()Ljdk/vm/ci/runtime/JVMCICompiler;", CHECK);
606 Handle jvmciRuntime = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK);
607 JavaValue result(T_OBJECT);
608 JavaCalls::call_virtual(&result, jvmciRuntime, HotSpotJVMCIRuntime::klass(), getCompiler, sig, CHECK);
609 }
610
611 // private static JVMCIRuntime JVMCI.initializeRuntime()
612 JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c))
613 if (!EnableJVMCI) {
614 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
615 }
616 JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL);
617 jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL);
618 return ret;
619 JVM_END
620
621 Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) {
622 TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle()));
623 Klass* klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle()));
624 TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle()));
625 TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle()));
626 JavaValue result(T_OBJECT);
627 if (args == NULL) {
628 JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle()));
629 } else {
630 JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle()));
631 }
632 return Handle(THREAD, (oop)result.get_jobject());
633 }
634
635 Handle JVMCIRuntime::get_HotSpotJVMCIRuntime(TRAPS) {
636 initialize_JVMCI(CHECK_(Handle()));
637 return Handle(THREAD, JNIHandles::resolve_non_null(_HotSpotJVMCIRuntime_instance));
638 }
639
640 void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) {
641 guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime");
642 JVMCIRuntime::initialize_well_known_classes(CHECK);
643 // This should only be called in the context of the JVMCI class being initialized
644 InstanceKlass* klass = SystemDictionary::JVMCI_klass();
645 guarantee(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD),
646 "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization");
647
648 Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime",
649 "runtime",
650 "()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK);
651 objArrayOop trivial_prefixes = HotSpotJVMCIRuntime::trivialPrefixes(result);
652 if (trivial_prefixes != NULL) {
653 char** prefixes = NEW_C_HEAP_ARRAY(char*, trivial_prefixes->length(), mtCompiler);
654 for (int i = 0; i < trivial_prefixes->length(); i++) {
655 oop str = trivial_prefixes->obj_at(i);
656 if (str == NULL) {
657 THROW(vmSymbols::java_lang_NullPointerException());
658 } else {
659 prefixes[i] = strdup(java_lang_String::as_utf8_string(str));
660 }
661 }
662 _trivial_prefixes = prefixes;
663 _trivial_prefixes_count = trivial_prefixes->length();
664 }
665 int adjustment = HotSpotJVMCIRuntime::compilationLevelAdjustment(result);
666 assert(adjustment >= JVMCIRuntime::none &&
667 adjustment <= JVMCIRuntime::by_full_signature,
668 "compilation level adjustment out of bounds");
669 _comp_level_adjustment = (CompLevelAdjustment) adjustment;
670 _HotSpotJVMCIRuntime_initialized = true;
671 _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result);
672 }
673
674 void JVMCIRuntime::initialize_JVMCI(TRAPS) {
675 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
676 callStatic("jdk/vm/ci/runtime/JVMCI",
677 "getRuntime",
678 "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK);
679 }
680 assert(_HotSpotJVMCIRuntime_initialized == true, "what?");
681 }
682
683 bool JVMCIRuntime::can_initialize_JVMCI() {
684 // Initializing JVMCI requires the module system to be initialized past phase 3.
685 // The JVMCI API itself isn't available until phase 2 and ServiceLoader (which
686 // JVMCI initialization requires) isn't usable until after phase 3. Testing
687 // whether the system loader is initialized satisfies all these invariants.
688 if (SystemDictionary::java_system_loader() == NULL) {
689 return false;
690 }
691 assert(Universe::is_module_initialized(), "must be");
692 return true;
693 }
694
695 void JVMCIRuntime::initialize_well_known_classes(TRAPS) {
696 if (JVMCIRuntime::_well_known_classes_initialized == false) {
697 guarantee(can_initialize_JVMCI(), "VM is not yet sufficiently booted to initialize JVMCI");
698 SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID;
699 SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK);
700 JVMCIJavaClasses::compute_offsets(CHECK);
701 JVMCIRuntime::_well_known_classes_initialized = true;
702 }
703 }
704
705 void JVMCIRuntime::metadata_do(void f(Metadata*)) {
706 // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in
707 // the SystemDictionary well known classes should ensure the other
708 // classes have already been loaded, so make sure their order in the
709 // table enforces that.
710 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) <
711 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
712 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) <
713 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
714 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) <
715 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
716
717 if (HotSpotJVMCIMetaAccessContext::klass() == NULL ||
718 !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) {
719 // Nothing could be registered yet
720 return;
721 }
722
723 // WeakReference<HotSpotJVMCIMetaAccessContext>[]
724 objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts();
725 if (allContexts == NULL) {
726 return;
727 }
728
729 // These must be loaded at this point but the linking state doesn't matter.
730 assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded");
731 assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded");
732 assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded");
733
734 for (int i = 0; i < allContexts->length(); i++) {
735 oop ref = allContexts->obj_at(i);
736 if (ref != NULL) {
737 oop referent = java_lang_ref_Reference::referent(ref);
738 if (referent != NULL) {
739 // Chunked Object[] with last element pointing to next chunk
740 objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent);
741 while (metadataRoots != NULL) {
742 for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) {
743 oop reference = metadataRoots->obj_at(typeIndex);
744 if (reference == NULL) {
745 continue;
746 }
747 oop metadataRoot = java_lang_ref_Reference::referent(reference);
748 if (metadataRoot == NULL) {
749 continue;
750 }
751 if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) {
752 Method* method = CompilerToVM::asMethod(metadataRoot);
753 f(method);
754 } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) {
755 ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot);
756 f(constantPool);
757 } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) {
758 Klass* klass = CompilerToVM::asKlass(metadataRoot);
759 f(klass);
760 } else {
761 metadataRoot->print();
762 ShouldNotReachHere();
763 }
764 }
765 metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1);
766 assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type");
767 }
768 }
769 }
770 }
771 }
772
773 // private static void CompilerToVM.registerNatives()
774 JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass))
775 if (!EnableJVMCI) {
776 THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled");
777 }
778
779 #ifdef _LP64
780 #ifndef SPARC
781 uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end();
782 uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024;
783 guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)");
784 #endif // !SPARC
785 #else
786 fatal("check TLAB allocation code for address space conflicts");
787 #endif // _LP64
788
789 JVMCIRuntime::initialize_well_known_classes(CHECK);
790
791 {
792 ThreadToNativeFromVM trans(thread);
793 env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count());
794 }
795 JVM_END
796
797 void JVMCIRuntime::shutdown(TRAPS) {
798 if (_HotSpotJVMCIRuntime_instance != NULL) {
799 _shutdown_called = true;
800 HandleMark hm(THREAD);
801 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
802 JavaValue result(T_VOID);
803 JavaCallArguments args;
804 args.push_oop(receiver);
805 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
806 }
807 }
808
809 CompLevel JVMCIRuntime::adjust_comp_level_inner(const methodHandle& method, bool is_osr, CompLevel level, JavaThread* thread) {
810 JVMCICompiler* compiler = JVMCICompiler::instance(false, thread);
811 if (compiler != NULL && compiler->is_bootstrapping()) {
812 return level;
813 }
814 if (!is_HotSpotJVMCIRuntime_initialized() || _comp_level_adjustment == JVMCIRuntime::none) {
815 // JVMCI cannot participate in compilation scheduling until
816 // JVMCI is initialized and indicates it wants to participate.
817 return level;
818 }
819
820 #define CHECK_RETURN THREAD); \
821 if (HAS_PENDING_EXCEPTION) { \
822 Handle exception(THREAD, PENDING_EXCEPTION); \
823 CLEAR_PENDING_EXCEPTION; \
824 \
825 if (exception->is_a(SystemDictionary::ThreadDeath_klass())) { \
826 /* In the special case of ThreadDeath, we need to reset the */ \
827 /* pending async exception so that it is propagated. */ \
828 thread->set_pending_async_exception(exception()); \
829 return level; \
830 } \
831 tty->print("Uncaught exception while adjusting compilation level: "); \
832 java_lang_Throwable::print(exception(), tty); \
833 tty->cr(); \
834 java_lang_Throwable::print_stack_trace(exception, tty); \
835 if (HAS_PENDING_EXCEPTION) { \
836 CLEAR_PENDING_EXCEPTION; \
837 } \
838 return level; \
839 } \
840 (void)(0
841
842
843 Thread* THREAD = thread;
844 HandleMark hm;
845 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_RETURN);
846 Handle name;
847 Handle sig;
848 if (_comp_level_adjustment == JVMCIRuntime::by_full_signature) {
849 name = java_lang_String::create_from_symbol(method->name(), CHECK_RETURN);
850 sig = java_lang_String::create_from_symbol(method->signature(), CHECK_RETURN);
851 } else {
852 name = Handle();
853 sig = Handle();
854 }
855
856 JavaValue result(T_INT);
857 JavaCallArguments args;
858 args.push_oop(receiver);
859 args.push_oop(Handle(THREAD, method->method_holder()->java_mirror()));
860 args.push_oop(name);
861 args.push_oop(sig);
862 args.push_int(is_osr);
863 args.push_int(level);
864 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::adjustCompilationLevel_name(),
865 vmSymbols::adjustCompilationLevel_signature(), &args, CHECK_RETURN);
866
867 int comp_level = result.get_jint();
868 if (comp_level < CompLevel_none || comp_level > CompLevel_full_optimization) {
869 assert(false, "compilation level out of bounds");
870 return level;
871 }
872 return (CompLevel) comp_level;
873 #undef CHECK_RETURN
874 }
875
876 void JVMCIRuntime::bootstrap_finished(TRAPS) {
877 HandleMark hm(THREAD);
878 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
879 JavaValue result(T_VOID);
880 JavaCallArguments args;
881 args.push_oop(receiver);
882 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::bootstrapFinished_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
883 }
884
885 bool JVMCIRuntime::treat_as_trivial(Method* method) {
886 if (_HotSpotJVMCIRuntime_initialized) {
887 for (int i = 0; i < _trivial_prefixes_count; i++) {
888 if (method->method_holder()->name()->starts_with(_trivial_prefixes[i])) {
889 return true;
890 }
891 }
892 }
893 return false;
894 }