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 "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 InstanceKlass* ik = InstanceKlass::cast(klass);
111 ik->check_valid_for_instantiation(true, CHECK);
112 // make sure klass is initialized
113 ik->initialize(CHECK);
114 // allocate instance and return via TLS
115 oop obj = ik->allocate_instance(CHECK);
116 thread->set_vm_result(obj);
117 JRT_BLOCK_END;
118
119 SharedRuntime::on_slowpath_allocation(thread);
120 JRT_END
121
122 JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
123 JRT_BLOCK;
124 // Note: no handle for klass needed since they are not used
125 // anymore after new_objArray() and no GC can happen before.
126 // (This may have to change if this code changes!)
127 assert(array_klass->is_klass(), "not a class");
128 oop obj;
129 if (array_klass->is_typeArray_klass()) {
130 BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type();
131 obj = oopFactory::new_typeArray(elt_type, length, CHECK);
132 } else {
133 Handle holder(THREAD, array_klass->klass_holder()); // keep the klass alive
134 Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass();
135 obj = oopFactory::new_objArray(elem_klass, length, CHECK);
136 }
137 thread->set_vm_result(obj);
138 // This is pretty rare but this runtime patch is stressful to deoptimization
139 // if we deoptimize here so force a deopt to stress the path.
140 if (DeoptimizeALot) {
141 static int deopts = 0;
142 // Alternate between deoptimizing and raising an error (which will also cause a deopt)
143 if (deopts++ % 2 == 0) {
144 ResourceMark rm(THREAD);
145 THROW(vmSymbols::java_lang_OutOfMemoryError());
146 } else {
147 deopt_caller();
148 }
149 }
150 JRT_BLOCK_END;
151
152 SharedRuntime::on_slowpath_allocation(thread);
153 JRT_END
154
155 JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
156 assert(klass->is_klass(), "not a class");
157 assert(rank >= 1, "rank must be nonzero");
158 Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
159 oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
160 thread->set_vm_result(obj);
161 JRT_END
162
163 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length))
164 oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK);
165 thread->set_vm_result(obj);
166 JRT_END
167
168 JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror))
169 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(type_mirror));
170
171 if (klass == NULL) {
172 ResourceMark rm(THREAD);
173 THROW(vmSymbols::java_lang_InstantiationException());
174 }
175
176 // Create new instance (the receiver)
177 klass->check_valid_for_instantiation(false, CHECK);
178
179 // Make sure klass gets initialized
180 klass->initialize(CHECK);
181
182 oop obj = klass->allocate_instance(CHECK);
183 thread->set_vm_result(obj);
184 JRT_END
185
186 extern void vm_exit(int code);
187
188 // Enter this method from compiled code handler below. This is where we transition
189 // to VM mode. This is done as a helper routine so that the method called directly
190 // from compiled code does not have to transition to VM. This allows the entry
191 // method to see if the nmethod that we have just looked up a handler for has
192 // been deoptimized while we were in the vm. This simplifies the assembly code
193 // cpu directories.
194 //
195 // We are entering here from exception stub (via the entry method below)
196 // If there is a compiled exception handler in this method, we will continue there;
197 // otherwise we will unwind the stack and continue at the caller of top frame method
198 // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to
199 // control the area where we can allow a safepoint. After we exit the safepoint area we can
200 // check to see if the handler we are going to return is now in a nmethod that has
201 // been deoptimized. If that is the case we return the deopt blob
202 // unpack_with_exception entry instead. This makes life for the exception blob easier
203 // because making that same check and diverting is painful from assembly language.
204 JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, CompiledMethod*& cm))
205 // Reset method handle flag.
206 thread->set_is_method_handle_return(false);
207
208 Handle exception(thread, ex);
209 cm = CodeCache::find_compiled(pc);
210 assert(cm != NULL, "this is not a compiled method");
211 // Adjust the pc as needed/
212 if (cm->is_deopt_pc(pc)) {
213 RegisterMap map(thread, false);
214 frame exception_frame = thread->last_frame().sender(&map);
215 // if the frame isn't deopted then pc must not correspond to the caller of last_frame
216 assert(exception_frame.is_deoptimized_frame(), "must be deopted");
217 pc = exception_frame.pc();
218 }
219 #ifdef ASSERT
220 assert(exception.not_null(), "NULL exceptions should be handled by throw_exception");
221 assert(exception->is_oop(), "just checking");
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 assert(h_obj()->is_oop(), "must be NULL or an object");
368 if (UseBiasedLocking) {
369 // Retry fast entry if bias is revoked to avoid unnecessary inflation
370 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
371 } else {
372 if (JVMCIUseFastLocking) {
373 // When using fast locking, the compiled code has already tried the fast case
374 ObjectSynchronizer::slow_enter(h_obj, lock, THREAD);
375 } else {
376 ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD);
377 }
378 }
379 TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj));
380 JRT_END
381
382 JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock))
383 assert(thread == JavaThread::current(), "threads must correspond");
384 assert(thread->last_Java_sp(), "last_Java_sp must be set");
385 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
386 EXCEPTION_MARK;
387
388 #ifdef DEBUG
389 if (!obj->is_oop()) {
390 ResetNoHandleMark rhm;
391 nmethod* method = thread->last_frame().cb()->as_nmethod_or_null();
392 if (method != NULL) {
393 tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj));
394 }
395 thread->print_stack_on(tty);
396 assert(false, "invalid lock object pointer dected");
397 }
398 #endif
399
400 if (JVMCIUseFastLocking) {
401 // When using fast locking, the compiled code has already tried the fast case
402 ObjectSynchronizer::slow_exit(obj, lock, THREAD);
403 } else {
404 ObjectSynchronizer::fast_exit(obj, lock, THREAD);
405 }
406 IF_TRACE_jvmci_3 {
407 char type[O_BUFLEN];
408 obj->klass()->name()->as_C_string(type, O_BUFLEN);
409 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));
410 tty->flush();
411 }
412 JRT_END
413
414 JRT_ENTRY(void, JVMCIRuntime::throw_and_post_jvmti_exception(JavaThread* thread, const char* exception, const char* message))
415 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
416 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);
417 JRT_END
418
419 JRT_ENTRY(void, JVMCIRuntime::throw_klass_external_name_exception(JavaThread* thread, const char* exception, Klass* klass))
420 ResourceMark rm(thread);
421 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
422 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, klass->external_name());
423 JRT_END
424
425 JRT_ENTRY(void, JVMCIRuntime::throw_class_cast_exception(JavaThread* thread, const char* exception, Klass* caster_klass, Klass* target_klass))
426 ResourceMark rm(thread);
427 const char* message = SharedRuntime::generate_class_cast_message(caster_klass, target_klass);
428 TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK);
429 SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message);
430 JRT_END
431
432 JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, bool as_string, bool newline))
433 ttyLocker ttyl;
434
435 if (obj == NULL) {
436 tty->print("NULL");
437 } else if (obj->is_oop_or_null(true) && (!as_string || !java_lang_String::is_instance(obj))) {
438 if (obj->is_oop_or_null(true)) {
439 char buf[O_BUFLEN];
440 tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj));
441 } else {
442 tty->print(INTPTR_FORMAT, p2i(obj));
443 }
444 } else {
445 ResourceMark rm;
446 assert(obj != NULL && java_lang_String::is_instance(obj), "must be");
447 char *buf = java_lang_String::as_utf8_string(obj);
448 tty->print_raw(buf);
449 }
450 if (newline) {
451 tty->cr();
452 }
453 JRT_END
454
455 JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj))
456 thread->satb_mark_queue().enqueue(obj);
457 JRT_END
458
459 JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr))
460 thread->dirty_card_queue().enqueue(card_addr);
461 JRT_END
462
463 JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child))
464 bool ret = true;
465 if(!Universe::heap()->is_in_closed_subset(parent)) {
466 tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent));
467 parent->print();
468 ret=false;
469 }
470 if(!Universe::heap()->is_in_closed_subset(child)) {
471 tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child));
472 child->print();
473 ret=false;
474 }
475 return (jint)ret;
476 JRT_END
477
478 JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value))
479 ResourceMark rm;
480 const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where;
481 char *detail_msg = NULL;
482 if (format != 0L) {
483 const char* buf = (char*) (address) format;
484 size_t detail_msg_length = strlen(buf) * 2;
485 detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length);
486 jio_snprintf(detail_msg, detail_msg_length, buf, value);
487 report_vm_error(__FILE__, __LINE__, error_msg, "%s", detail_msg);
488 } else {
489 report_vm_error(__FILE__, __LINE__, error_msg);
490 }
491 JRT_END
492
493 JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread))
494 oop exception = thread->exception_oop();
495 assert(exception != NULL, "npe");
496 thread->set_exception_oop(NULL);
497 thread->set_exception_pc(0);
498 return exception;
499 JRT_END
500
501 PRAGMA_DIAG_PUSH
502 PRAGMA_FORMAT_NONLITERAL_IGNORED
503 JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3))
504 ResourceMark rm;
505 assert(format != NULL && java_lang_String::is_instance(format), "must be");
506 char *buf = java_lang_String::as_utf8_string(format);
507 tty->print((const char*)buf, v1, v2, v3);
508 JRT_END
509 PRAGMA_DIAG_POP
510
511 static void decipher(jlong v, bool ignoreZero) {
512 if (v != 0 || !ignoreZero) {
513 void* p = (void *)(address) v;
514 CodeBlob* cb = CodeCache::find_blob(p);
515 if (cb) {
516 if (cb->is_nmethod()) {
517 char buf[O_BUFLEN];
518 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()));
519 return;
520 }
521 cb->print_value_on(tty);
522 return;
523 }
524 if (Universe::heap()->is_in(p)) {
525 oop obj = oop(p);
526 obj->print_value_on(tty);
527 return;
528 }
529 tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v);
530 }
531 }
532
533 PRAGMA_DIAG_PUSH
534 PRAGMA_FORMAT_NONLITERAL_IGNORED
535 JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3))
536 ResourceMark rm;
537 const char *buf = (const char*) (address) format;
538 if (vmError) {
539 if (buf != NULL) {
540 fatal(buf, v1, v2, v3);
541 } else {
542 fatal("<anonymous error>");
543 }
544 } else if (buf != NULL) {
545 tty->print(buf, v1, v2, v3);
546 } else {
547 assert(v2 == 0, "v2 != 0");
548 assert(v3 == 0, "v3 != 0");
549 decipher(v1, false);
550 }
551 JRT_END
552 PRAGMA_DIAG_POP
553
554 JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline))
555 union {
556 jlong l;
557 jdouble d;
558 jfloat f;
559 } uu;
560 uu.l = value;
561 switch (typeChar) {
562 case 'Z': tty->print(value == 0 ? "false" : "true"); break;
563 case 'B': tty->print("%d", (jbyte) value); break;
564 case 'C': tty->print("%c", (jchar) value); break;
565 case 'S': tty->print("%d", (jshort) value); break;
566 case 'I': tty->print("%d", (jint) value); break;
567 case 'F': tty->print("%f", uu.f); break;
568 case 'J': tty->print(JLONG_FORMAT, value); break;
569 case 'D': tty->print("%lf", uu.d); break;
570 default: assert(false, "unknown typeChar"); break;
571 }
572 if (newline) {
573 tty->cr();
574 }
575 JRT_END
576
577 JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj))
578 return (jint) obj->identity_hash();
579 JRT_END
580
581 JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted))
582 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate.
583 // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF.
584 Handle receiverHandle(thread, receiver);
585 MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock);
586 JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle());
587 if (receiverThread == NULL) {
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(jint, 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 void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) {
636 guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime");
637 JVMCIRuntime::initialize_well_known_classes(CHECK);
638 // This should only be called in the context of the JVMCI class being initialized
639 InstanceKlass* klass = SystemDictionary::JVMCI_klass();
640 guarantee(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD),
641 "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization");
642
643 Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime",
644 "runtime",
645 "()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK);
646 objArrayOop trivial_prefixes = HotSpotJVMCIRuntime::trivialPrefixes(result);
647 if (trivial_prefixes != NULL) {
648 char** prefixes = NEW_C_HEAP_ARRAY(char*, trivial_prefixes->length(), mtCompiler);
649 for (int i = 0; i < trivial_prefixes->length(); i++) {
650 oop str = trivial_prefixes->obj_at(i);
651 if (str == NULL) {
652 THROW(vmSymbols::java_lang_NullPointerException());
653 } else {
654 prefixes[i] = strdup(java_lang_String::as_utf8_string(str));
655 }
656 }
657 _trivial_prefixes = prefixes;
658 _trivial_prefixes_count = trivial_prefixes->length();
659 }
660 int adjustment = HotSpotJVMCIRuntime::compilationLevelAdjustment(result);
661 assert(adjustment >= JVMCIRuntime::none &&
662 adjustment <= JVMCIRuntime::by_full_signature,
663 "compilation level adjustment out of bounds");
664 _comp_level_adjustment = (CompLevelAdjustment) adjustment;
665 _HotSpotJVMCIRuntime_initialized = true;
666 _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result);
667 }
668
669 void JVMCIRuntime::initialize_JVMCI(TRAPS) {
670 if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
671 callStatic("jdk/vm/ci/runtime/JVMCI",
672 "getRuntime",
673 "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK);
674 }
675 assert(_HotSpotJVMCIRuntime_initialized == true, "what?");
676 }
677
678 bool JVMCIRuntime::can_initialize_JVMCI() {
679 // Initializing JVMCI requires the module system to be initialized past phase 3.
680 // The JVMCI API itself isn't available until phase 2 and ServiceLoader (which
681 // JVMCI initialization requires) isn't usable until after phase 3. Testing
682 // whether the system loader is initialized satisfies all these invariants.
683 if (SystemDictionary::java_system_loader() == NULL) {
684 return false;
685 }
686 assert(Universe::is_module_initialized(), "must be");
687 return true;
688 }
689
690 void JVMCIRuntime::initialize_well_known_classes(TRAPS) {
691 if (JVMCIRuntime::_well_known_classes_initialized == false) {
692 guarantee(can_initialize_JVMCI(), "VM is not yet sufficiently booted to initialize JVMCI");
693 SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID;
694 SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK);
695 JVMCIJavaClasses::compute_offsets(CHECK);
696 JVMCIRuntime::_well_known_classes_initialized = true;
697 }
698 }
699
700 void JVMCIRuntime::metadata_do(void f(Metadata*)) {
701 // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in
702 // the SystemDictionary well known classes should ensure the other
703 // classes have already been loaded, so make sure their order in the
704 // table enforces that.
705 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) <
706 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
707 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) <
708 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
709 assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) <
710 SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
711
712 if (HotSpotJVMCIMetaAccessContext::klass() == NULL ||
713 !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) {
714 // Nothing could be registered yet
715 return;
716 }
717
718 // WeakReference<HotSpotJVMCIMetaAccessContext>[]
719 objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts();
720 if (allContexts == NULL) {
721 return;
722 }
723
724 // These must be loaded at this point but the linking state doesn't matter.
725 assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded");
726 assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded");
727 assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded");
728
729 for (int i = 0; i < allContexts->length(); i++) {
730 oop ref = allContexts->obj_at(i);
731 if (ref != NULL) {
732 oop referent = java_lang_ref_Reference::referent(ref);
733 if (referent != NULL) {
734 // Chunked Object[] with last element pointing to next chunk
735 objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent);
736 while (metadataRoots != NULL) {
737 for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) {
738 oop reference = metadataRoots->obj_at(typeIndex);
739 if (reference == NULL) {
740 continue;
741 }
742 oop metadataRoot = java_lang_ref_Reference::referent(reference);
743 if (metadataRoot == NULL) {
744 continue;
745 }
746 if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) {
747 Method* method = CompilerToVM::asMethod(metadataRoot);
748 f(method);
749 } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) {
750 ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot);
751 f(constantPool);
752 } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) {
753 Klass* klass = CompilerToVM::asKlass(metadataRoot);
754 f(klass);
755 } else {
756 metadataRoot->print();
757 ShouldNotReachHere();
758 }
759 }
760 metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1);
761 assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type");
762 }
763 }
764 }
765 }
766 }
767
768 // private static void CompilerToVM.registerNatives()
769 JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass))
770 if (!EnableJVMCI) {
771 THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled");
772 }
773
774 #ifdef _LP64
775 #ifndef SPARC
776 uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end();
777 uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024;
778 guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)");
779 #endif // !SPARC
780 #else
781 fatal("check TLAB allocation code for address space conflicts");
782 #endif // _LP64
783
784 JVMCIRuntime::initialize_well_known_classes(CHECK);
785
786 {
787 ThreadToNativeFromVM trans(thread);
788 env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count());
789 }
790 JVM_END
791
792 void JVMCIRuntime::shutdown(TRAPS) {
793 if (_HotSpotJVMCIRuntime_instance != NULL) {
794 _shutdown_called = true;
795 HandleMark hm(THREAD);
796 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
797 JavaValue result(T_VOID);
798 JavaCallArguments args;
799 args.push_oop(receiver);
800 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
801 }
802 }
803
804 CompLevel JVMCIRuntime::adjust_comp_level_inner(methodHandle method, bool is_osr, CompLevel level, JavaThread* thread) {
805 JVMCICompiler* compiler = JVMCICompiler::instance(thread);
806 if (compiler != NULL && compiler->is_bootstrapping()) {
807 return level;
808 }
809 if (!is_HotSpotJVMCIRuntime_initialized() || !_comp_level_adjustment) {
810 // JVMCI cannot participate in compilation scheduling until
811 // JVMCI is initialized and indicates it wants to participate.
812 return level;
813 }
814
815 #define CHECK_RETURN THREAD); \
816 if (HAS_PENDING_EXCEPTION) { \
817 Handle exception(THREAD, PENDING_EXCEPTION); \
818 CLEAR_PENDING_EXCEPTION; \
819 \
820 java_lang_Throwable::java_printStackTrace(exception, THREAD); \
821 if (HAS_PENDING_EXCEPTION) { \
822 CLEAR_PENDING_EXCEPTION; \
823 } \
824 return level; \
825 } \
826 (void)(0
827
828
829 Thread* THREAD = thread;
830 HandleMark hm;
831 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_RETURN);
832 Handle name;
833 Handle sig;
834 if (_comp_level_adjustment == JVMCIRuntime::by_full_signature) {
835 name = java_lang_String::create_from_symbol(method->name(), CHECK_RETURN);
836 sig = java_lang_String::create_from_symbol(method->signature(), CHECK_RETURN);
837 } else {
838 name = Handle();
839 sig = Handle();
840 }
841
842 JavaValue result(T_INT);
843 JavaCallArguments args;
844 args.push_oop(receiver);
845 args.push_oop(Handle(THREAD, method->method_holder()->java_mirror()));
846 args.push_oop(name);
847 args.push_oop(sig);
848 args.push_int(is_osr);
849 args.push_int(level);
850 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::adjustCompilationLevel_name(),
851 vmSymbols::adjustCompilationLevel_signature(), &args, CHECK_RETURN);
852
853 int comp_level = result.get_jint();
854 if (comp_level < CompLevel_none || comp_level > CompLevel_full_optimization) {
855 assert(false, "compilation level out of bounds");
856 return level;
857 }
858 return (CompLevel) comp_level;
859 #undef CHECK_RETURN
860 }
861
862 void JVMCIRuntime::bootstrap_finished(TRAPS) {
863 HandleMark hm(THREAD);
864 Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
865 JavaValue result(T_VOID);
866 JavaCallArguments args;
867 args.push_oop(receiver);
868 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::bootstrapFinished_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
869 }
870
871 bool JVMCIRuntime::treat_as_trivial(Method* method) {
872 if (_HotSpotJVMCIRuntime_initialized) {
873 for (int i = 0; i < _trivial_prefixes_count; i++) {
874 if (method->method_holder()->name()->starts_with(_trivial_prefixes[i])) {
875 return true;
876 }
877 }
878 }
879 return false;
880 }