1 /*
2 * Copyright (c) 1998, 2021, 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
25 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "code/codeBlob.hpp"
28 #include "code/codeCache.hpp"
29 #include "code/icBuffer.hpp"
30 #include "code/relocInfo.hpp"
31 #include "code/vtableStubs.hpp"
32 #include "compiler/disassembler.hpp"
33 #include "compiler/oopMap.hpp"
34 #include "interpreter/bytecode.hpp"
35 #include "interpreter/interpreter.hpp"
36 #include "memory/allocation.inline.hpp"
37 #include "memory/heap.hpp"
38 #include "memory/resourceArea.hpp"
39 #include "oops/oop.inline.hpp"
40 #include "prims/forte.hpp"
41 #include "prims/jvmtiExport.hpp"
42 #include "runtime/handles.inline.hpp"
43 #include "runtime/interfaceSupport.inline.hpp"
44 #include "runtime/javaFrameAnchor.hpp"
45 #include "runtime/jniHandles.hpp"
46 #include "runtime/mutexLocker.hpp"
47 #include "runtime/safepoint.hpp"
48 #include "runtime/sharedRuntime.hpp"
49 #include "runtime/stubCodeGenerator.hpp"
50 #include "runtime/stubRoutines.hpp"
51 #include "runtime/vframe.hpp"
52 #include "services/memoryService.hpp"
53 #include "utilities/align.hpp"
54 #ifdef COMPILER1
55 #include "c1/c1_Runtime1.hpp"
56 #endif
57
58 const char* CodeBlob::compiler_name() const {
59 return compilertype2name(_type);
60 }
61
62 unsigned int CodeBlob::align_code_offset(int offset) {
63 // align the size to CodeEntryAlignment
64 int header_size = (int)CodeHeap::header_size();
65 return align_up(offset + header_size, CodeEntryAlignment) - header_size;
66 }
67
68
69 // This must be consistent with the CodeBlob constructor's layout actions.
70 unsigned int CodeBlob::allocation_size(CodeBuffer* cb, int header_size) {
71 unsigned int size = header_size;
72 size += align_up(cb->total_relocation_size(), oopSize);
73 // align the size to CodeEntryAlignment
74 size = align_code_offset(size);
75 size += align_up(cb->total_content_size(), oopSize);
76 size += align_up(cb->total_oop_size(), oopSize);
77 size += align_up(cb->total_metadata_size(), oopSize);
78 return size;
79 }
80
81 CodeBlob::CodeBlob(const char* name, CompilerType type, const CodeBlobLayout& layout, int frame_complete_offset, int frame_size, ImmutableOopMapSet* oop_maps, bool caller_must_gc_arguments) :
82 _type(type),
83 _size(layout.size()),
84 _header_size(layout.header_size()),
85 _frame_complete_offset(frame_complete_offset),
86 _data_offset(layout.data_offset()),
87 _frame_size(frame_size),
88 _code_begin(layout.code_begin()),
89 _code_end(layout.code_end()),
90 _content_begin(layout.content_begin()),
91 _data_end(layout.data_end()),
92 _relocation_begin(layout.relocation_begin()),
93 _relocation_end(layout.relocation_end()),
94 _oop_maps(oop_maps),
95 _caller_must_gc_arguments(caller_must_gc_arguments),
96 _name(name)
97 {
98 assert(is_aligned(layout.size(), oopSize), "unaligned size");
99 assert(is_aligned(layout.header_size(), oopSize), "unaligned size");
100 assert(is_aligned(layout.relocation_size(), oopSize), "unaligned size");
101 assert(layout.code_end() == layout.content_end(), "must be the same - see code_end()");
102 #ifdef COMPILER1
103 // probably wrong for tiered
104 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs");
105 #endif // COMPILER1
106 S390_ONLY(_ctable_offset = 0;) // avoid uninitialized fields
107 }
108
109 CodeBlob::CodeBlob(const char* name, CompilerType type, const CodeBlobLayout& layout, CodeBuffer* cb /*UNUSED*/, int frame_complete_offset, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments) :
110 _type(type),
111 _size(layout.size()),
112 _header_size(layout.header_size()),
113 _frame_complete_offset(frame_complete_offset),
114 _data_offset(layout.data_offset()),
115 _frame_size(frame_size),
116 _code_begin(layout.code_begin()),
117 _code_end(layout.code_end()),
118 _content_begin(layout.content_begin()),
119 _data_end(layout.data_end()),
120 _relocation_begin(layout.relocation_begin()),
121 _relocation_end(layout.relocation_end()),
122 _caller_must_gc_arguments(caller_must_gc_arguments),
123 _name(name)
124 {
125 assert(is_aligned(_size, oopSize), "unaligned size");
126 assert(is_aligned(_header_size, oopSize), "unaligned size");
127 assert(_data_offset <= _size, "codeBlob is too small");
128 assert(layout.code_end() == layout.content_end(), "must be the same - see code_end()");
129
130 set_oop_maps(oop_maps);
131 #ifdef COMPILER1
132 // probably wrong for tiered
133 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs");
134 #endif // COMPILER1
135 S390_ONLY(_ctable_offset = 0;) // avoid uninitialized fields
136 }
137
138
139 // Creates a simple CodeBlob. Sets up the size of the different regions.
140 RuntimeBlob::RuntimeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size)
141 : CodeBlob(name, compiler_none, CodeBlobLayout((address) this, size, header_size, locs_size, size), frame_complete, 0, NULL, false /* caller_must_gc_arguments */)
142 {
143 assert(is_aligned(locs_size, oopSize), "unaligned size");
144 }
145
146
147 // Creates a RuntimeBlob from a CodeBuffer
148 // and copy code and relocation info.
149 RuntimeBlob::RuntimeBlob(
150 const char* name,
151 CodeBuffer* cb,
152 int header_size,
153 int size,
154 int frame_complete,
155 int frame_size,
156 OopMapSet* oop_maps,
157 bool caller_must_gc_arguments
158 ) : CodeBlob(name, compiler_none, CodeBlobLayout((address) this, size, header_size, cb), cb, frame_complete, frame_size, oop_maps, caller_must_gc_arguments) {
159 cb->copy_code_and_locs_to(this);
160 }
161
162 void CodeBlob::flush() {
163 FREE_C_HEAP_ARRAY(unsigned char, _oop_maps);
164 _oop_maps = NULL;
165 NOT_PRODUCT(_asm_remarks.clear());
166 NOT_PRODUCT(_dbg_strings.clear());
167 }
168
169 void CodeBlob::set_oop_maps(OopMapSet* p) {
170 // Danger Will Robinson! This method allocates a big
171 // chunk of memory, its your job to free it.
172 if (p != NULL) {
173 _oop_maps = ImmutableOopMapSet::build_from(p);
174 } else {
175 _oop_maps = NULL;
176 }
177 }
178
179
180 void RuntimeBlob::trace_new_stub(RuntimeBlob* stub, const char* name1, const char* name2) {
181 // Do not hold the CodeCache lock during name formatting.
182 assert(!CodeCache_lock->owned_by_self(), "release CodeCache before registering the stub");
183
184 if (stub != NULL) {
185 char stub_id[256];
186 assert(strlen(name1) + strlen(name2) < sizeof(stub_id), "");
187 jio_snprintf(stub_id, sizeof(stub_id), "%s%s", name1, name2);
188 if (PrintStubCode) {
189 ttyLocker ttyl;
190 tty->print_cr("- - - [BEGIN] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -");
191 tty->print_cr("Decoding %s " INTPTR_FORMAT, stub_id, (intptr_t) stub);
192 Disassembler::decode(stub->code_begin(), stub->code_end(), tty
193 NOT_PRODUCT(COMMA &stub->asm_remarks()));
194 if ((stub->oop_maps() != NULL) && AbstractDisassembler::show_structs()) {
195 tty->print_cr("- - - [OOP MAPS]- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -");
196 stub->oop_maps()->print();
197 }
198 tty->print_cr("- - - [END] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -");
199 tty->cr();
200 }
201 Forte::register_stub(stub_id, stub->code_begin(), stub->code_end());
202
203 if (JvmtiExport::should_post_dynamic_code_generated()) {
204 const char* stub_name = name2;
205 if (name2[0] == '\0') stub_name = name1;
206 JvmtiExport::post_dynamic_code_generated(stub_name, stub->code_begin(), stub->code_end());
207 }
208 }
209
210 // Track memory usage statistic after releasing CodeCache_lock
211 MemoryService::track_code_cache_memory_usage();
212 }
213
214 const ImmutableOopMap* CodeBlob::oop_map_for_return_address(address return_address) {
215 assert(_oop_maps != NULL, "nope");
216 return _oop_maps->find_map_at_offset((intptr_t) return_address - (intptr_t) code_begin());
217 }
218
219 void CodeBlob::print_code() {
220 ResourceMark m;
221 Disassembler::decode(this, tty);
222 }
223
224 //----------------------------------------------------------------------------------------------------
225 // Implementation of BufferBlob
226
227
228 BufferBlob::BufferBlob(const char* name, int size)
229 : RuntimeBlob(name, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, /*locs_size:*/ 0)
230 {}
231
232 BufferBlob* BufferBlob::create(const char* name, int buffer_size) {
233 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
234
235 BufferBlob* blob = NULL;
236 unsigned int size = sizeof(BufferBlob);
237 // align the size to CodeEntryAlignment
238 size = CodeBlob::align_code_offset(size);
239 size += align_up(buffer_size, oopSize);
240 assert(name != NULL, "must provide a name");
241 {
242 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
243 blob = new (size) BufferBlob(name, size);
244 }
245 // Track memory usage statistic after releasing CodeCache_lock
246 MemoryService::track_code_cache_memory_usage();
247
248 return blob;
249 }
250
251
252 BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb)
253 : RuntimeBlob(name, cb, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, 0, NULL)
254 {}
255
256 BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) {
257 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
258
259 BufferBlob* blob = NULL;
260 unsigned int size = CodeBlob::allocation_size(cb, sizeof(BufferBlob));
261 assert(name != NULL, "must provide a name");
262 {
263 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
264 blob = new (size) BufferBlob(name, size, cb);
265 }
266 // Track memory usage statistic after releasing CodeCache_lock
267 MemoryService::track_code_cache_memory_usage();
268
269 return blob;
270 }
271
272 void* BufferBlob::operator new(size_t s, unsigned size) throw() {
273 return CodeCache::allocate(size, CodeBlobType::NonNMethod);
274 }
275
276 void BufferBlob::free(BufferBlob *blob) {
277 assert(blob != NULL, "caller must check for NULL");
278 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
279 blob->flush();
280 {
281 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
282 CodeCache::free((RuntimeBlob*)blob);
283 }
284 // Track memory usage statistic after releasing CodeCache_lock
285 MemoryService::track_code_cache_memory_usage();
286 }
287
288
289 //----------------------------------------------------------------------------------------------------
290 // Implementation of AdapterBlob
291
292 AdapterBlob::AdapterBlob(int size, CodeBuffer* cb) :
293 BufferBlob("I2C/C2I adapters", size, cb) {
294 CodeCache::commit(this);
295 }
296
297 AdapterBlob* AdapterBlob::create(CodeBuffer* cb) {
298 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
299
300 AdapterBlob* blob = NULL;
301 unsigned int size = CodeBlob::allocation_size(cb, sizeof(AdapterBlob));
302 {
303 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
304 blob = new (size) AdapterBlob(size, cb);
305 }
306 // Track memory usage statistic after releasing CodeCache_lock
307 MemoryService::track_code_cache_memory_usage();
308
309 return blob;
310 }
311
312 void* VtableBlob::operator new(size_t s, unsigned size) throw() {
313 // Handling of allocation failure stops compilation and prints a bunch of
314 // stuff, which requires unlocking the CodeCache_lock, so that the Compile_lock
315 // can be locked, and then re-locking the CodeCache_lock. That is not safe in
316 // this context as we hold the CompiledICLocker. So we just don't handle code
317 // cache exhaustion here; we leave that for a later allocation that does not
318 // hold the CompiledICLocker.
319 return CodeCache::allocate(size, CodeBlobType::NonNMethod, false /* handle_alloc_failure */);
320 }
321
322 VtableBlob::VtableBlob(const char* name, int size) :
323 BufferBlob(name, size) {
324 }
325
326 VtableBlob* VtableBlob::create(const char* name, int buffer_size) {
327 assert(JavaThread::current()->thread_state() == _thread_in_vm, "called with the wrong state");
328
329 VtableBlob* blob = NULL;
330 unsigned int size = sizeof(VtableBlob);
331 // align the size to CodeEntryAlignment
332 size = align_code_offset(size);
333 size += align_up(buffer_size, oopSize);
334 assert(name != NULL, "must provide a name");
335 {
336 if (!CodeCache_lock->try_lock()) {
337 // If we can't take the CodeCache_lock, then this is a bad time to perform the ongoing
338 // IC transition to megamorphic, for which this stub will be needed. It is better to
339 // bail out the transition, and wait for a more opportune moment. Not only is it not
340 // worth waiting for the lock blockingly for the megamorphic transition, it might
341 // also result in a deadlock to blockingly wait, when concurrent class unloading is
342 // performed. At this point in time, the CompiledICLocker is taken, so we are not
343 // allowed to blockingly wait for the CodeCache_lock, as these two locks are otherwise
344 // consistently taken in the opposite order. Bailing out results in an IC transition to
345 // the clean state instead, which will cause subsequent calls to retry the transitioning
346 // eventually.
347 return NULL;
348 }
349 blob = new (size) VtableBlob(name, size);
350 CodeCache_lock->unlock();
351 }
352 // Track memory usage statistic after releasing CodeCache_lock
353 MemoryService::track_code_cache_memory_usage();
354
355 return blob;
356 }
357
358 //----------------------------------------------------------------------------------------------------
359 // Implementation of MethodHandlesAdapterBlob
360
361 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
362 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
363
364 MethodHandlesAdapterBlob* blob = NULL;
365 unsigned int size = sizeof(MethodHandlesAdapterBlob);
366 // align the size to CodeEntryAlignment
367 size = CodeBlob::align_code_offset(size);
368 size += align_up(buffer_size, oopSize);
369 {
370 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
371 blob = new (size) MethodHandlesAdapterBlob(size);
372 if (blob == NULL) {
373 vm_exit_out_of_memory(size, OOM_MALLOC_ERROR, "CodeCache: no room for method handle adapter blob");
374 }
375 }
376 // Track memory usage statistic after releasing CodeCache_lock
377 MemoryService::track_code_cache_memory_usage();
378
379 return blob;
380 }
381
382 //----------------------------------------------------------------------------------------------------
383 // Implementation of RuntimeStub
384
385 RuntimeStub::RuntimeStub(
386 const char* name,
387 CodeBuffer* cb,
388 int size,
389 int frame_complete,
390 int frame_size,
391 OopMapSet* oop_maps,
392 bool caller_must_gc_arguments
393 )
394 : RuntimeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments)
395 {
396 }
397
398 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
399 CodeBuffer* cb,
400 int frame_complete,
401 int frame_size,
402 OopMapSet* oop_maps,
403 bool caller_must_gc_arguments)
404 {
405 RuntimeStub* stub = NULL;
406 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
407 {
408 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
409 unsigned int size = CodeBlob::allocation_size(cb, sizeof(RuntimeStub));
410 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
411 }
412
413 trace_new_stub(stub, "RuntimeStub - ", stub_name);
414
415 return stub;
416 }
417
418
419 void* RuntimeStub::operator new(size_t s, unsigned size) throw() {
420 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
421 if (!p) fatal("Initial size of CodeCache is too small");
422 return p;
423 }
424
425 // operator new shared by all singletons:
426 void* SingletonBlob::operator new(size_t s, unsigned size) throw() {
427 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
428 if (!p) fatal("Initial size of CodeCache is too small");
429 return p;
430 }
431
432
433 //----------------------------------------------------------------------------------------------------
434 // Implementation of DeoptimizationBlob
435
436 DeoptimizationBlob::DeoptimizationBlob(
437 CodeBuffer* cb,
438 int size,
439 OopMapSet* oop_maps,
440 int unpack_offset,
441 int unpack_with_exception_offset,
442 int unpack_with_reexecution_offset,
443 int frame_size
444 )
445 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps)
446 {
447 _unpack_offset = unpack_offset;
448 _unpack_with_exception = unpack_with_exception_offset;
449 _unpack_with_reexecution = unpack_with_reexecution_offset;
450 #ifdef COMPILER1
451 _unpack_with_exception_in_tls = -1;
452 #endif
453 }
454
455
456 DeoptimizationBlob* DeoptimizationBlob::create(
457 CodeBuffer* cb,
458 OopMapSet* oop_maps,
459 int unpack_offset,
460 int unpack_with_exception_offset,
461 int unpack_with_reexecution_offset,
462 int frame_size)
463 {
464 DeoptimizationBlob* blob = NULL;
465 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
466 {
467 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
468 unsigned int size = CodeBlob::allocation_size(cb, sizeof(DeoptimizationBlob));
469 blob = new (size) DeoptimizationBlob(cb,
470 size,
471 oop_maps,
472 unpack_offset,
473 unpack_with_exception_offset,
474 unpack_with_reexecution_offset,
475 frame_size);
476 }
477
478 trace_new_stub(blob, "DeoptimizationBlob");
479
480 return blob;
481 }
482
483
484 //----------------------------------------------------------------------------------------------------
485 // Implementation of UncommonTrapBlob
486
487 #ifdef COMPILER2
488 UncommonTrapBlob::UncommonTrapBlob(
489 CodeBuffer* cb,
490 int size,
491 OopMapSet* oop_maps,
492 int frame_size
493 )
494 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps)
495 {}
496
497
498 UncommonTrapBlob* UncommonTrapBlob::create(
499 CodeBuffer* cb,
500 OopMapSet* oop_maps,
501 int frame_size)
502 {
503 UncommonTrapBlob* blob = NULL;
504 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
505 {
506 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
507 unsigned int size = CodeBlob::allocation_size(cb, sizeof(UncommonTrapBlob));
508 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
509 }
510
511 trace_new_stub(blob, "UncommonTrapBlob");
512
513 return blob;
514 }
515
516
517 #endif // COMPILER2
518
519
520 //----------------------------------------------------------------------------------------------------
521 // Implementation of ExceptionBlob
522
523 #ifdef COMPILER2
524 ExceptionBlob::ExceptionBlob(
525 CodeBuffer* cb,
526 int size,
527 OopMapSet* oop_maps,
528 int frame_size
529 )
530 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps)
531 {}
532
533
534 ExceptionBlob* ExceptionBlob::create(
535 CodeBuffer* cb,
536 OopMapSet* oop_maps,
537 int frame_size)
538 {
539 ExceptionBlob* blob = NULL;
540 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
541 {
542 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
543 unsigned int size = CodeBlob::allocation_size(cb, sizeof(ExceptionBlob));
544 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
545 }
546
547 trace_new_stub(blob, "ExceptionBlob");
548
549 return blob;
550 }
551
552
553 #endif // COMPILER2
554
555
556 //----------------------------------------------------------------------------------------------------
557 // Implementation of SafepointBlob
558
559 SafepointBlob::SafepointBlob(
560 CodeBuffer* cb,
561 int size,
562 OopMapSet* oop_maps,
563 int frame_size
564 )
565 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps)
566 {}
567
568
569 SafepointBlob* SafepointBlob::create(
570 CodeBuffer* cb,
571 OopMapSet* oop_maps,
572 int frame_size)
573 {
574 SafepointBlob* blob = NULL;
575 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
576 {
577 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
578 unsigned int size = CodeBlob::allocation_size(cb, sizeof(SafepointBlob));
579 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
580 }
581
582 trace_new_stub(blob, "SafepointBlob");
583
584 return blob;
585 }
586
587
588 //----------------------------------------------------------------------------------------------------
589 // Verification and printing
590
591 void CodeBlob::print_on(outputStream* st) const {
592 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", p2i(this));
593 st->print_cr("Framesize: %d", _frame_size);
594 }
595
596 void CodeBlob::print() const { print_on(tty); }
597
598 void CodeBlob::print_value_on(outputStream* st) const {
599 st->print_cr("[CodeBlob]");
600 }
601
602 void CodeBlob::dump_for_addr(address addr, outputStream* st, bool verbose) const {
603 if (is_buffer_blob()) {
604 // the interpreter is generated into a buffer blob
605 InterpreterCodelet* i = Interpreter::codelet_containing(addr);
606 if (i != NULL) {
607 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in an Interpreter codelet", p2i(addr), (int)(addr - i->code_begin()));
608 i->print_on(st);
609 return;
610 }
611 if (Interpreter::contains(addr)) {
612 st->print_cr(INTPTR_FORMAT " is pointing into interpreter code"
613 " (not bytecode specific)", p2i(addr));
614 return;
615 }
616 //
617 if (AdapterHandlerLibrary::contains(this)) {
618 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in an AdapterHandler", p2i(addr), (int)(addr - code_begin()));
619 AdapterHandlerLibrary::print_handler_on(st, this);
620 }
621 // the stubroutines are generated into a buffer blob
622 StubCodeDesc* d = StubCodeDesc::desc_for(addr);
623 if (d != NULL) {
624 st->print_cr(INTPTR_FORMAT " is at begin+%d in a stub", p2i(addr), (int)(addr - d->begin()));
625 d->print_on(st);
626 st->cr();
627 return;
628 }
629 if (StubRoutines::contains(addr)) {
630 st->print_cr(INTPTR_FORMAT " is pointing to an (unnamed) stub routine", p2i(addr));
631 return;
632 }
633 // the InlineCacheBuffer is using stubs generated into a buffer blob
634 if (InlineCacheBuffer::contains(addr)) {
635 st->print_cr(INTPTR_FORMAT " is pointing into InlineCacheBuffer", p2i(addr));
636 return;
637 }
638 VtableStub* v = VtableStubs::stub_containing(addr);
639 if (v != NULL) {
640 st->print_cr(INTPTR_FORMAT " is at entry_point+%d in a vtable stub", p2i(addr), (int)(addr - v->entry_point()));
641 v->print_on(st);
642 st->cr();
643 return;
644 }
645 }
646 if (is_nmethod()) {
647 nmethod* nm = (nmethod*)this;
648 ResourceMark rm;
649 st->print(INTPTR_FORMAT " is at entry_point+%d in (nmethod*)" INTPTR_FORMAT,
650 p2i(addr), (int)(addr - nm->entry_point()), p2i(nm));
651 if (verbose) {
652 st->print(" for ");
653 nm->method()->print_value_on(st);
654 }
655 st->cr();
656 if (verbose && st == tty) {
657 // verbose is only ever true when called from findpc in debug.cpp
658 nm->print_nmethod(true);
659 } else {
660 nm->print(st);
661 }
662 return;
663 }
664 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in ", p2i(addr), (int)(addr - code_begin()));
665 print_on(st);
666 }
667
668 void RuntimeBlob::verify() {
669 ShouldNotReachHere();
670 }
671
672 void BufferBlob::verify() {
673 // unimplemented
674 }
675
676 void BufferBlob::print_on(outputStream* st) const {
677 RuntimeBlob::print_on(st);
678 print_value_on(st);
679 }
680
681 void BufferBlob::print_value_on(outputStream* st) const {
682 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", p2i(this), name());
683 }
684
685 void RuntimeStub::verify() {
686 // unimplemented
687 }
688
689 void RuntimeStub::print_on(outputStream* st) const {
690 ttyLocker ttyl;
691 RuntimeBlob::print_on(st);
692 st->print("Runtime Stub (" INTPTR_FORMAT "): ", p2i(this));
693 st->print_cr("%s", name());
694 Disassembler::decode((RuntimeBlob*)this, st);
695 }
696
697 void RuntimeStub::print_value_on(outputStream* st) const {
698 st->print("RuntimeStub (" INTPTR_FORMAT "): ", p2i(this)); st->print("%s", name());
699 }
700
701 void SingletonBlob::verify() {
702 // unimplemented
703 }
704
705 void SingletonBlob::print_on(outputStream* st) const {
706 ttyLocker ttyl;
707 RuntimeBlob::print_on(st);
708 st->print_cr("%s", name());
709 Disassembler::decode((RuntimeBlob*)this, st);
710 }
711
712 void SingletonBlob::print_value_on(outputStream* st) const {
713 st->print_cr("%s", name());
714 }
715
716 void DeoptimizationBlob::print_value_on(outputStream* st) const {
717 st->print_cr("Deoptimization (frame not available)");
718 }
719
720 // Implementation of OptimizedEntryBlob
721
722 OptimizedEntryBlob::OptimizedEntryBlob(const char* name, int size, CodeBuffer* cb, intptr_t exception_handler_offset,
723 jobject receiver, ByteSize frame_data_offset) :
724 BufferBlob(name, size, cb),
725 _exception_handler_offset(exception_handler_offset),
726 _receiver(receiver),
727 _frame_data_offset(frame_data_offset) {
728 CodeCache::commit(this);
729 }
730
731 OptimizedEntryBlob* OptimizedEntryBlob::create(const char* name, CodeBuffer* cb, intptr_t exception_handler_offset,
732 jobject receiver, ByteSize frame_data_offset) {
733 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
734
735 OptimizedEntryBlob* blob = nullptr;
736 unsigned int size = CodeBlob::allocation_size(cb, sizeof(OptimizedEntryBlob));
737 {
738 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
739 blob = new (size) OptimizedEntryBlob(name, size, cb, exception_handler_offset, receiver, frame_data_offset);
740 }
741 // Track memory usage statistic after releasing CodeCache_lock
742 MemoryService::track_code_cache_memory_usage();
743
744 return blob;
745 }
746
747 void OptimizedEntryBlob::oops_do(OopClosure* f, const frame& frame) {
748 frame_data_for_frame(frame)->old_handles->oops_do(f);
749 }
750
751 JavaFrameAnchor* OptimizedEntryBlob::jfa_for_frame(const frame& frame) const {
752 return &frame_data_for_frame(frame)->jfa;
753 }