1 /*
2 * Copyright (c) 1998, 2024, 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 "code/codeBlob.hpp"
27 #include "code/codeCache.hpp"
28 #include "code/relocInfo.hpp"
29 #include "code/vtableStubs.hpp"
30 #include "compiler/disassembler.hpp"
31 #include "compiler/oopMap.hpp"
32 #include "interpreter/bytecode.hpp"
33 #include "interpreter/interpreter.hpp"
34 #include "jvm.h"
35 #include "memory/allocation.inline.hpp"
36 #include "memory/heap.hpp"
37 #include "memory/resourceArea.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "prims/forte.hpp"
40 #include "prims/jvmtiExport.hpp"
41 #include "runtime/handles.inline.hpp"
42 #include "runtime/interfaceSupport.inline.hpp"
43 #include "runtime/javaFrameAnchor.hpp"
44 #include "runtime/jniHandles.inline.hpp"
45 #include "runtime/mutexLocker.hpp"
46 #include "runtime/safepoint.hpp"
47 #include "runtime/sharedRuntime.hpp"
48 #include "runtime/stubCodeGenerator.hpp"
49 #include "runtime/stubRoutines.hpp"
50 #include "runtime/vframe.hpp"
51 #include "services/memoryService.hpp"
52 #include "utilities/align.hpp"
53 #ifdef COMPILER1
54 #include "c1/c1_Runtime1.hpp"
55 #endif
56
57
58 unsigned int CodeBlob::align_code_offset(int offset) {
59 // align the size to CodeEntryAlignment
60 int header_size = (int)CodeHeap::header_size();
61 return align_up(offset + header_size, CodeEntryAlignment) - header_size;
62 }
63
64 // This must be consistent with the CodeBlob constructor's layout actions.
65 unsigned int CodeBlob::allocation_size(CodeBuffer* cb, int header_size) {
66 unsigned int size = header_size;
67 size += align_up(cb->total_relocation_size(), oopSize);
68 // align the size to CodeEntryAlignment
69 size = align_code_offset(size);
70 size += align_up(cb->total_content_size(), oopSize);
71 size += align_up(cb->total_oop_size(), oopSize);
72 size += align_up(cb->total_metadata_size(), oopSize);
73 return size;
74 }
75
76 CodeBlob::CodeBlob(const char* name, CodeBlobKind kind, CodeBuffer* cb, int size, uint16_t header_size,
77 int16_t frame_complete_offset, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments) :
78 _oop_maps(nullptr), // will be set by set_oop_maps() call
79 _name(name),
80 _size(size),
81 _relocation_size(align_up(cb->total_relocation_size(), oopSize)),
82 _content_offset(CodeBlob::align_code_offset(header_size + _relocation_size)),
83 _code_offset(_content_offset + cb->total_offset_of(cb->insts())),
84 _data_offset(_content_offset + align_up(cb->total_content_size(), oopSize)),
85 _frame_size(frame_size),
86 S390_ONLY(_ctable_offset(0) COMMA)
87 _header_size(header_size),
88 _frame_complete_offset(frame_complete_offset),
89 _kind(kind),
90 _caller_must_gc_arguments(caller_must_gc_arguments)
91 {
92 assert(is_aligned(_size, oopSize), "unaligned size");
93 assert(is_aligned(header_size, oopSize), "unaligned size");
94 assert(is_aligned(_relocation_size, oopSize), "unaligned size");
95 assert(_data_offset <= _size, "codeBlob is too small: %d > %d", _data_offset, _size);
96 assert(code_end() == content_end(), "must be the same - see code_end()");
97 #ifdef COMPILER1
98 // probably wrong for tiered
99 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs");
100 #endif // COMPILER1
101
102 set_oop_maps(oop_maps);
103 }
104
105 // Simple CodeBlob used for simple BufferBlob.
106 CodeBlob::CodeBlob(const char* name, CodeBlobKind kind, int size, uint16_t header_size) :
107 _oop_maps(nullptr),
108 _name(name),
109 _size(size),
110 _relocation_size(0),
111 _content_offset(CodeBlob::align_code_offset(header_size)),
112 _code_offset(_content_offset),
113 _data_offset(size),
114 _frame_size(0),
115 S390_ONLY(_ctable_offset(0) COMMA)
116 _header_size(header_size),
117 _frame_complete_offset(CodeOffsets::frame_never_safe),
118 _kind(kind),
119 _caller_must_gc_arguments(false)
120 {
121 assert(is_aligned(size, oopSize), "unaligned size");
122 assert(is_aligned(header_size, oopSize), "unaligned size");
123 }
124
125 void CodeBlob::purge() {
126 if (_oop_maps != nullptr) {
127 delete _oop_maps;
128 _oop_maps = nullptr;
129 }
130 NOT_PRODUCT(_asm_remarks.clear());
131 NOT_PRODUCT(_dbg_strings.clear());
132 }
133
134 void CodeBlob::set_oop_maps(OopMapSet* p) {
135 // Danger Will Robinson! This method allocates a big
136 // chunk of memory, its your job to free it.
137 if (p != nullptr) {
138 _oop_maps = ImmutableOopMapSet::build_from(p);
139 } else {
140 _oop_maps = nullptr;
141 }
142 }
143
144 const ImmutableOopMap* CodeBlob::oop_map_for_return_address(address return_address) const {
145 assert(_oop_maps != nullptr, "nope");
146 return _oop_maps->find_map_at_offset((intptr_t) return_address - (intptr_t) code_begin());
147 }
148
149 void CodeBlob::print_code_on(outputStream* st) {
150 ResourceMark m;
151 Disassembler::decode(this, st);
152 }
153
154 //-----------------------------------------------------------------------------------------
155 // Creates a RuntimeBlob from a CodeBuffer and copy code and relocation info.
156
157 RuntimeBlob::RuntimeBlob(
158 const char* name,
159 CodeBlobKind kind,
160 CodeBuffer* cb,
161 int size,
162 uint16_t header_size,
163 int16_t frame_complete,
164 int frame_size,
165 OopMapSet* oop_maps,
166 bool caller_must_gc_arguments)
167 : CodeBlob(name, kind, cb, size, header_size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments)
168 {
169 cb->copy_code_and_locs_to(this);
170 }
171
172 void RuntimeBlob::free(RuntimeBlob* blob) {
173 assert(blob != nullptr, "caller must check for nullptr");
174 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
175 blob->purge();
176 {
177 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
178 CodeCache::free(blob);
179 }
180 // Track memory usage statistic after releasing CodeCache_lock
181 MemoryService::track_code_cache_memory_usage();
182 }
183
184 void RuntimeBlob::trace_new_stub(RuntimeBlob* stub, const char* name1, const char* name2) {
185 // Do not hold the CodeCache lock during name formatting.
186 assert(!CodeCache_lock->owned_by_self(), "release CodeCache before registering the stub");
187
188 if (stub != nullptr && (PrintStubCode ||
189 Forte::is_enabled() ||
190 JvmtiExport::should_post_dynamic_code_generated())) {
191 char stub_id[256];
192 assert(strlen(name1) + strlen(name2) < sizeof(stub_id), "");
193 jio_snprintf(stub_id, sizeof(stub_id), "%s%s", name1, name2);
194 if (PrintStubCode) {
195 ttyLocker ttyl;
196 tty->print_cr("- - - [BEGIN] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -");
197 tty->print_cr("Decoding %s " PTR_FORMAT " [" PTR_FORMAT ", " PTR_FORMAT "] (%d bytes)",
198 stub_id, p2i(stub), p2i(stub->code_begin()), p2i(stub->code_end()), stub->code_size());
199 Disassembler::decode(stub->code_begin(), stub->code_end(), tty
200 NOT_PRODUCT(COMMA &stub->asm_remarks()));
201 if ((stub->oop_maps() != nullptr) && AbstractDisassembler::show_structs()) {
202 tty->print_cr("- - - [OOP MAPS]- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -");
203 stub->oop_maps()->print();
204 }
205 tty->print_cr("- - - [END] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -");
206 tty->cr();
207 }
208 if (Forte::is_enabled()) {
209 Forte::register_stub(stub_id, stub->code_begin(), stub->code_end());
210 }
211
212 if (JvmtiExport::should_post_dynamic_code_generated()) {
213 const char* stub_name = name2;
214 if (name2[0] == '\0') stub_name = name1;
215 JvmtiExport::post_dynamic_code_generated(stub_name, stub->code_begin(), stub->code_end());
216 }
217 }
218
219 // Track memory usage statistic after releasing CodeCache_lock
220 MemoryService::track_code_cache_memory_usage();
221 }
222
223 //----------------------------------------------------------------------------------------------------
224 // Implementation of BufferBlob
225
226 BufferBlob::BufferBlob(const char* name, CodeBlobKind kind, int size)
227 : RuntimeBlob(name, kind, size, sizeof(BufferBlob))
228 {}
229
230 BufferBlob* BufferBlob::create(const char* name, uint buffer_size) {
231 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
232
233 BufferBlob* blob = nullptr;
234 unsigned int size = sizeof(BufferBlob);
235 // align the size to CodeEntryAlignment
236 size = CodeBlob::align_code_offset(size);
237 size += align_up(buffer_size, oopSize);
238 assert(name != nullptr, "must provide a name");
239 {
240 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
241 blob = new (size) BufferBlob(name, CodeBlobKind::Buffer, size);
242 }
243 // Track memory usage statistic after releasing CodeCache_lock
244 MemoryService::track_code_cache_memory_usage();
245
246 return blob;
247 }
248
249
250 BufferBlob::BufferBlob(const char* name, CodeBlobKind kind, CodeBuffer* cb, int size)
251 : RuntimeBlob(name, kind, cb, size, sizeof(BufferBlob), CodeOffsets::frame_never_safe, 0, nullptr)
252 {}
253
254 // Used by gtest
255 BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) {
256 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
257
258 BufferBlob* blob = nullptr;
259 unsigned int size = CodeBlob::allocation_size(cb, sizeof(BufferBlob));
260 assert(name != nullptr, "must provide a name");
261 {
262 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
263 blob = new (size) BufferBlob(name, CodeBlobKind::Buffer, cb, size);
264 }
265 // Track memory usage statistic after releasing CodeCache_lock
266 MemoryService::track_code_cache_memory_usage();
267
268 return blob;
269 }
270
271 void* BufferBlob::operator new(size_t s, unsigned size) throw() {
272 return CodeCache::allocate(size, CodeBlobType::NonNMethod);
273 }
274
275 void BufferBlob::free(BufferBlob *blob) {
276 RuntimeBlob::free(blob);
277 }
278
279
280 //----------------------------------------------------------------------------------------------------
281 // Implementation of AdapterBlob
282
283 AdapterBlob::AdapterBlob(int size, CodeBuffer* cb) :
284 BufferBlob("I2C/C2I adapters", CodeBlobKind::Adapter, cb, size) {
285 CodeCache::commit(this);
286 }
287
288 AdapterBlob* AdapterBlob::create(CodeBuffer* cb) {
289 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
290
291 CodeCache::gc_on_allocation();
292
293 AdapterBlob* blob = nullptr;
294 unsigned int size = CodeBlob::allocation_size(cb, sizeof(AdapterBlob));
295 {
296 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
297 blob = new (size) AdapterBlob(size, cb);
298 }
299 // Track memory usage statistic after releasing CodeCache_lock
300 MemoryService::track_code_cache_memory_usage();
301
302 return blob;
303 }
304
305 //----------------------------------------------------------------------------------------------------
306 // Implementation of VtableBlob
307
308 void* VtableBlob::operator new(size_t s, unsigned size) throw() {
309 // Handling of allocation failure stops compilation and prints a bunch of
310 // stuff, which requires unlocking the CodeCache_lock, so that the Compile_lock
311 // can be locked, and then re-locking the CodeCache_lock. That is not safe in
312 // this context as we hold the CompiledICLocker. So we just don't handle code
313 // cache exhaustion here; we leave that for a later allocation that does not
314 // hold the CompiledICLocker.
315 return CodeCache::allocate(size, CodeBlobType::NonNMethod, false /* handle_alloc_failure */);
316 }
317
318 VtableBlob::VtableBlob(const char* name, int size) :
319 BufferBlob(name, CodeBlobKind::Vtable, size) {
320 }
321
322 VtableBlob* VtableBlob::create(const char* name, int buffer_size) {
323 assert(JavaThread::current()->thread_state() == _thread_in_vm, "called with the wrong state");
324
325 VtableBlob* blob = nullptr;
326 unsigned int size = sizeof(VtableBlob);
327 // align the size to CodeEntryAlignment
328 size = align_code_offset(size);
329 size += align_up(buffer_size, oopSize);
330 assert(name != nullptr, "must provide a name");
331 {
332 if (!CodeCache_lock->try_lock()) {
333 // If we can't take the CodeCache_lock, then this is a bad time to perform the ongoing
334 // IC transition to megamorphic, for which this stub will be needed. It is better to
335 // bail out the transition, and wait for a more opportune moment. Not only is it not
336 // worth waiting for the lock blockingly for the megamorphic transition, it might
337 // also result in a deadlock to blockingly wait, when concurrent class unloading is
338 // performed. At this point in time, the CompiledICLocker is taken, so we are not
339 // allowed to blockingly wait for the CodeCache_lock, as these two locks are otherwise
340 // consistently taken in the opposite order. Bailing out results in an IC transition to
341 // the clean state instead, which will cause subsequent calls to retry the transitioning
342 // eventually.
343 return nullptr;
344 }
345 blob = new (size) VtableBlob(name, size);
346 CodeCache_lock->unlock();
347 }
348 // Track memory usage statistic after releasing CodeCache_lock
349 MemoryService::track_code_cache_memory_usage();
350
351 return blob;
352 }
353
354 //----------------------------------------------------------------------------------------------------
355 // Implementation of MethodHandlesAdapterBlob
356
357 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
358 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
359
360 MethodHandlesAdapterBlob* blob = nullptr;
361 unsigned int size = sizeof(MethodHandlesAdapterBlob);
362 // align the size to CodeEntryAlignment
363 size = CodeBlob::align_code_offset(size);
364 size += align_up(buffer_size, oopSize);
365 {
366 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
367 blob = new (size) MethodHandlesAdapterBlob(size);
368 if (blob == nullptr) {
369 vm_exit_out_of_memory(size, OOM_MALLOC_ERROR, "CodeCache: no room for method handle adapter blob");
370 }
371 }
372 // Track memory usage statistic after releasing CodeCache_lock
373 MemoryService::track_code_cache_memory_usage();
374
375 return blob;
376 }
377
378 //----------------------------------------------------------------------------------------------------
379 // Implementation of RuntimeStub
380
381 RuntimeStub::RuntimeStub(
382 const char* name,
383 CodeBuffer* cb,
384 int size,
385 int16_t frame_complete,
386 int frame_size,
387 OopMapSet* oop_maps,
388 bool caller_must_gc_arguments
389 )
390 : RuntimeBlob(name, CodeBlobKind::Runtime_Stub, cb, size, sizeof(RuntimeStub),
391 frame_complete, frame_size, oop_maps, caller_must_gc_arguments)
392 {
393 }
394
395 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
396 CodeBuffer* cb,
397 int16_t frame_complete,
398 int frame_size,
399 OopMapSet* oop_maps,
400 bool caller_must_gc_arguments,
401 bool alloc_fail_is_fatal)
402 {
403 RuntimeStub* stub = nullptr;
404 unsigned int size = CodeBlob::allocation_size(cb, sizeof(RuntimeStub));
405 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
406 {
407 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
408 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
409 if (stub == nullptr) {
410 if (!alloc_fail_is_fatal) {
411 return nullptr;
412 }
413 fatal("Initial size of CodeCache is too small");
414 }
415 }
416
417 trace_new_stub(stub, "RuntimeStub - ", stub_name);
418
419 return stub;
420 }
421
422
423 void* RuntimeStub::operator new(size_t s, unsigned size) throw() {
424 return CodeCache::allocate(size, CodeBlobType::NonNMethod);
425 }
426
427 // operator new shared by all singletons:
428 void* SingletonBlob::operator new(size_t s, unsigned size) throw() {
429 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
430 if (!p) fatal("Initial size of CodeCache is too small");
431 return p;
432 }
433
434
435 //----------------------------------------------------------------------------------------------------
436 // Implementation of DeoptimizationBlob
437
438 DeoptimizationBlob::DeoptimizationBlob(
439 CodeBuffer* cb,
440 int size,
441 OopMapSet* oop_maps,
442 int unpack_offset,
443 int unpack_with_exception_offset,
444 int unpack_with_reexecution_offset,
445 int frame_size
446 )
447 : SingletonBlob("DeoptimizationBlob", CodeBlobKind::Deoptimization, cb,
448 size, sizeof(DeoptimizationBlob), frame_size, oop_maps)
449 {
450 _unpack_offset = unpack_offset;
451 _unpack_with_exception = unpack_with_exception_offset;
452 _unpack_with_reexecution = unpack_with_reexecution_offset;
453 #ifdef COMPILER1
454 _unpack_with_exception_in_tls = -1;
455 #endif
456 }
457
458
459 DeoptimizationBlob* DeoptimizationBlob::create(
460 CodeBuffer* cb,
461 OopMapSet* oop_maps,
462 int unpack_offset,
463 int unpack_with_exception_offset,
464 int unpack_with_reexecution_offset,
465 int frame_size)
466 {
467 DeoptimizationBlob* blob = nullptr;
468 unsigned int size = CodeBlob::allocation_size(cb, sizeof(DeoptimizationBlob));
469 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
470 {
471 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
472 blob = new (size) DeoptimizationBlob(cb,
473 size,
474 oop_maps,
475 unpack_offset,
476 unpack_with_exception_offset,
477 unpack_with_reexecution_offset,
478 frame_size);
479 }
480
481 trace_new_stub(blob, "DeoptimizationBlob");
482
483 return blob;
484 }
485
486
487 //----------------------------------------------------------------------------------------------------
488 // Implementation of UncommonTrapBlob
489
490 #ifdef COMPILER2
491 UncommonTrapBlob::UncommonTrapBlob(
492 CodeBuffer* cb,
493 int size,
494 OopMapSet* oop_maps,
495 int frame_size
496 )
497 : SingletonBlob("UncommonTrapBlob", CodeBlobKind::Uncommon_Trap, cb,
498 size, sizeof(UncommonTrapBlob), frame_size, oop_maps)
499 {}
500
501
502 UncommonTrapBlob* UncommonTrapBlob::create(
503 CodeBuffer* cb,
504 OopMapSet* oop_maps,
505 int frame_size)
506 {
507 UncommonTrapBlob* blob = nullptr;
508 unsigned int size = CodeBlob::allocation_size(cb, sizeof(UncommonTrapBlob));
509 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
510 {
511 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
512 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
513 }
514
515 trace_new_stub(blob, "UncommonTrapBlob");
516
517 return blob;
518 }
519
520
521 #endif // COMPILER2
522
523
524 //----------------------------------------------------------------------------------------------------
525 // Implementation of ExceptionBlob
526
527 #ifdef COMPILER2
528 ExceptionBlob::ExceptionBlob(
529 CodeBuffer* cb,
530 int size,
531 OopMapSet* oop_maps,
532 int frame_size
533 )
534 : SingletonBlob("ExceptionBlob", CodeBlobKind::Exception, cb,
535 size, sizeof(ExceptionBlob), frame_size, oop_maps)
536 {}
537
538
539 ExceptionBlob* ExceptionBlob::create(
540 CodeBuffer* cb,
541 OopMapSet* oop_maps,
542 int frame_size)
543 {
544 ExceptionBlob* blob = nullptr;
545 unsigned int size = CodeBlob::allocation_size(cb, sizeof(ExceptionBlob));
546 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
547 {
548 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
549 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
550 }
551
552 trace_new_stub(blob, "ExceptionBlob");
553
554 return blob;
555 }
556
557
558 #endif // COMPILER2
559
560
561 //----------------------------------------------------------------------------------------------------
562 // Implementation of SafepointBlob
563
564 SafepointBlob::SafepointBlob(
565 CodeBuffer* cb,
566 int size,
567 OopMapSet* oop_maps,
568 int frame_size
569 )
570 : SingletonBlob("SafepointBlob", CodeBlobKind::Safepoint, cb,
571 size, sizeof(SafepointBlob), frame_size, oop_maps)
572 {}
573
574
575 SafepointBlob* SafepointBlob::create(
576 CodeBuffer* cb,
577 OopMapSet* oop_maps,
578 int frame_size)
579 {
580 SafepointBlob* blob = nullptr;
581 unsigned int size = CodeBlob::allocation_size(cb, sizeof(SafepointBlob));
582 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
583 {
584 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
585 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
586 }
587
588 trace_new_stub(blob, "SafepointBlob");
589
590 return blob;
591 }
592
593 //----------------------------------------------------------------------------------------------------
594 // Implementation of UpcallStub
595
596 UpcallStub::UpcallStub(const char* name, CodeBuffer* cb, int size, jobject receiver, ByteSize frame_data_offset) :
597 RuntimeBlob(name, CodeBlobKind::Upcall, cb, size, sizeof(UpcallStub),
598 CodeOffsets::frame_never_safe, 0 /* no frame size */,
599 /* oop maps = */ nullptr, /* caller must gc arguments = */ false),
600 _receiver(receiver),
601 _frame_data_offset(frame_data_offset)
602 {
603 CodeCache::commit(this);
604 }
605
606 void* UpcallStub::operator new(size_t s, unsigned size) throw() {
607 return CodeCache::allocate(size, CodeBlobType::NonNMethod);
608 }
609
610 UpcallStub* UpcallStub::create(const char* name, CodeBuffer* cb, jobject receiver, ByteSize frame_data_offset) {
611 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
612
613 UpcallStub* blob = nullptr;
614 unsigned int size = CodeBlob::allocation_size(cb, sizeof(UpcallStub));
615 {
616 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
617 blob = new (size) UpcallStub(name, cb, size, receiver, frame_data_offset);
618 }
619 if (blob == nullptr) {
620 return nullptr; // caller must handle this
621 }
622
623 // Track memory usage statistic after releasing CodeCache_lock
624 MemoryService::track_code_cache_memory_usage();
625
626 trace_new_stub(blob, "UpcallStub - ", name);
627
628 return blob;
629 }
630
631 void UpcallStub::oops_do(OopClosure* f, const frame& frame) {
632 frame_data_for_frame(frame)->old_handles->oops_do(f);
633 }
634
635 JavaFrameAnchor* UpcallStub::jfa_for_frame(const frame& frame) const {
636 return &frame_data_for_frame(frame)->jfa;
637 }
638
639 void UpcallStub::free(UpcallStub* blob) {
640 assert(blob != nullptr, "caller must check for nullptr");
641 JNIHandles::destroy_global(blob->receiver());
642 RuntimeBlob::free(blob);
643 }
644
645 //----------------------------------------------------------------------------------------------------
646 // Verification and printing
647
648 void CodeBlob::print_on(outputStream* st) const {
649 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", p2i(this));
650 st->print_cr("Framesize: %d", _frame_size);
651 }
652
653 void CodeBlob::print() const { print_on(tty); }
654
655 void CodeBlob::print_value_on(outputStream* st) const {
656 st->print_cr("[CodeBlob]");
657 }
658
659 void CodeBlob::dump_for_addr(address addr, outputStream* st, bool verbose) const {
660 if (is_buffer_blob()) {
661 // the interpreter is generated into a buffer blob
662 InterpreterCodelet* i = Interpreter::codelet_containing(addr);
663 if (i != nullptr) {
664 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in an Interpreter codelet", p2i(addr), (int)(addr - i->code_begin()));
665 i->print_on(st);
666 return;
667 }
668 if (Interpreter::contains(addr)) {
669 st->print_cr(INTPTR_FORMAT " is pointing into interpreter code"
670 " (not bytecode specific)", p2i(addr));
671 return;
672 }
673 //
674 if (AdapterHandlerLibrary::contains(this)) {
675 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in an AdapterHandler", p2i(addr), (int)(addr - code_begin()));
676 AdapterHandlerLibrary::print_handler_on(st, this);
677 }
678 // the stubroutines are generated into a buffer blob
679 StubCodeDesc* d = StubCodeDesc::desc_for(addr);
680 if (d != nullptr) {
681 st->print_cr(INTPTR_FORMAT " is at begin+%d in a stub", p2i(addr), (int)(addr - d->begin()));
682 d->print_on(st);
683 st->cr();
684 return;
685 }
686 if (StubRoutines::contains(addr)) {
687 st->print_cr(INTPTR_FORMAT " is pointing to an (unnamed) stub routine", p2i(addr));
688 return;
689 }
690 VtableStub* v = VtableStubs::stub_containing(addr);
691 if (v != nullptr) {
692 st->print_cr(INTPTR_FORMAT " is at entry_point+%d in a vtable stub", p2i(addr), (int)(addr - v->entry_point()));
693 v->print_on(st);
694 st->cr();
695 return;
696 }
697 }
698 if (is_nmethod()) {
699 nmethod* nm = (nmethod*)this;
700 ResourceMark rm;
701 st->print(INTPTR_FORMAT " is at entry_point+%d in (nmethod*)" INTPTR_FORMAT,
702 p2i(addr), (int)(addr - nm->entry_point()), p2i(nm));
703 if (verbose) {
704 st->print(" for ");
705 nm->method()->print_value_on(st);
706 }
707 st->cr();
708 if (verbose && st == tty) {
709 // verbose is only ever true when called from findpc in debug.cpp
710 nm->print_nmethod(true);
711 } else {
712 nm->print(st);
713 }
714 return;
715 }
716 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in ", p2i(addr), (int)(addr - code_begin()));
717 print_on(st);
718 }
719
720 void BufferBlob::verify() {
721 // unimplemented
722 }
723
724 void BufferBlob::print_on(outputStream* st) const {
725 RuntimeBlob::print_on(st);
726 print_value_on(st);
727 }
728
729 void BufferBlob::print_value_on(outputStream* st) const {
730 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", p2i(this), name());
731 }
732
733 void RuntimeStub::verify() {
734 // unimplemented
735 }
736
737 void RuntimeStub::print_on(outputStream* st) const {
738 ttyLocker ttyl;
739 RuntimeBlob::print_on(st);
740 st->print("Runtime Stub (" INTPTR_FORMAT "): ", p2i(this));
741 st->print_cr("%s", name());
742 Disassembler::decode((RuntimeBlob*)this, st);
743 }
744
745 void RuntimeStub::print_value_on(outputStream* st) const {
746 st->print("RuntimeStub (" INTPTR_FORMAT "): ", p2i(this)); st->print("%s", name());
747 }
748
749 void SingletonBlob::verify() {
750 // unimplemented
751 }
752
753 void SingletonBlob::print_on(outputStream* st) const {
754 ttyLocker ttyl;
755 RuntimeBlob::print_on(st);
756 st->print_cr("%s", name());
757 Disassembler::decode((RuntimeBlob*)this, st);
758 }
759
760 void SingletonBlob::print_value_on(outputStream* st) const {
761 st->print_cr("%s", name());
762 }
763
764 void DeoptimizationBlob::print_value_on(outputStream* st) const {
765 st->print_cr("Deoptimization (frame not available)");
766 }
767
768 void UpcallStub::verify() {
769 // unimplemented
770 }
771
772 void UpcallStub::print_on(outputStream* st) const {
773 RuntimeBlob::print_on(st);
774 print_value_on(st);
775 st->print_cr("Frame data offset: %d", (int) _frame_data_offset);
776 oop recv = JNIHandles::resolve(_receiver);
777 st->print("Receiver MH=");
778 recv->print_on(st);
779 Disassembler::decode((RuntimeBlob*)this, st);
780 }
781
782 void UpcallStub::print_value_on(outputStream* st) const {
783 st->print_cr("UpcallStub (" INTPTR_FORMAT ") used for %s", p2i(this), name());
784 }