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