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 header_size, int size, CodeBuffer* cb)
253 : RuntimeBlob(name, cb, header_size, 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, sizeof(BufferBlob), 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 BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb, int frame_complete, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments)
289 : RuntimeBlob(name, cb, sizeof(BufferBlob), size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments)
290 {}
291
292
293 //----------------------------------------------------------------------------------------------------
294 // Implementation of AdapterBlob
295
296 AdapterBlob::AdapterBlob(int size, CodeBuffer* cb, int frame_complete, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments) :
297 BufferBlob("I2C/C2I adapters", size, cb, frame_complete, frame_size, oop_maps, caller_must_gc_arguments) {
298 CodeCache::commit(this);
299 }
300
301 AdapterBlob* AdapterBlob::create(CodeBuffer* cb, int frame_complete, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments) {
302 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
303
304 AdapterBlob* blob = NULL;
305 unsigned int size = CodeBlob::allocation_size(cb, sizeof(AdapterBlob));
306 {
307 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
308 blob = new (size) AdapterBlob(size, cb, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
309 }
310 // Track memory usage statistic after releasing CodeCache_lock
311 MemoryService::track_code_cache_memory_usage();
312
313 return blob;
314 }
315
316 void* VtableBlob::operator new(size_t s, unsigned size) throw() {
317 // Handling of allocation failure stops compilation and prints a bunch of
318 // stuff, which requires unlocking the CodeCache_lock, so that the Compile_lock
319 // can be locked, and then re-locking the CodeCache_lock. That is not safe in
320 // this context as we hold the CompiledICLocker. So we just don't handle code
321 // cache exhaustion here; we leave that for a later allocation that does not
322 // hold the CompiledICLocker.
323 return CodeCache::allocate(size, CodeBlobType::NonNMethod, false /* handle_alloc_failure */);
324 }
325
326 VtableBlob::VtableBlob(const char* name, int size) :
327 BufferBlob(name, size) {
328 }
329
330 VtableBlob* VtableBlob::create(const char* name, int buffer_size) {
331 assert(JavaThread::current()->thread_state() == _thread_in_vm, "called with the wrong state");
332
333 VtableBlob* blob = NULL;
334 unsigned int size = sizeof(VtableBlob);
335 // align the size to CodeEntryAlignment
336 size = align_code_offset(size);
337 size += align_up(buffer_size, oopSize);
338 assert(name != NULL, "must provide a name");
339 {
340 if (!CodeCache_lock->try_lock()) {
341 // If we can't take the CodeCache_lock, then this is a bad time to perform the ongoing
342 // IC transition to megamorphic, for which this stub will be needed. It is better to
343 // bail out the transition, and wait for a more opportune moment. Not only is it not
344 // worth waiting for the lock blockingly for the megamorphic transition, it might
345 // also result in a deadlock to blockingly wait, when concurrent class unloading is
346 // performed. At this point in time, the CompiledICLocker is taken, so we are not
347 // allowed to blockingly wait for the CodeCache_lock, as these two locks are otherwise
348 // consistently taken in the opposite order. Bailing out results in an IC transition to
349 // the clean state instead, which will cause subsequent calls to retry the transitioning
350 // eventually.
351 return NULL;
352 }
353 blob = new (size) VtableBlob(name, size);
354 CodeCache_lock->unlock();
355 }
356 // Track memory usage statistic after releasing CodeCache_lock
357 MemoryService::track_code_cache_memory_usage();
358
359 return blob;
360 }
361
362 //----------------------------------------------------------------------------------------------------
363 // Implementation of MethodHandlesAdapterBlob
364
365 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
366 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
367
368 MethodHandlesAdapterBlob* blob = NULL;
369 unsigned int size = sizeof(MethodHandlesAdapterBlob);
370 // align the size to CodeEntryAlignment
371 size = CodeBlob::align_code_offset(size);
372 size += align_up(buffer_size, oopSize);
373 {
374 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
375 blob = new (size) MethodHandlesAdapterBlob(size);
376 if (blob == NULL) {
377 vm_exit_out_of_memory(size, OOM_MALLOC_ERROR, "CodeCache: no room for method handle adapter blob");
378 }
379 }
380 // Track memory usage statistic after releasing CodeCache_lock
381 MemoryService::track_code_cache_memory_usage();
382
383 return blob;
384 }
385
386 //----------------------------------------------------------------------------------------------------
387 // Implementation of BufferedInlineTypeBlob
388 BufferedInlineTypeBlob::BufferedInlineTypeBlob(int size, CodeBuffer* cb, int pack_fields_off, int pack_fields_jobject_off, int unpack_fields_off) :
389 BufferBlob("buffered inline type", sizeof(BufferedInlineTypeBlob), size, cb),
390 _pack_fields_off(pack_fields_off),
391 _pack_fields_jobject_off(pack_fields_jobject_off),
392 _unpack_fields_off(unpack_fields_off) {
393 CodeCache::commit(this);
394 }
395
396 BufferedInlineTypeBlob* BufferedInlineTypeBlob::create(CodeBuffer* cb, int pack_fields_off, int pack_fields_jobject_off, int unpack_fields_off) {
397 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
398
399 BufferedInlineTypeBlob* blob = NULL;
400 unsigned int size = CodeBlob::allocation_size(cb, sizeof(BufferedInlineTypeBlob));
401 {
402 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
403 blob = new (size) BufferedInlineTypeBlob(size, cb, pack_fields_off, pack_fields_jobject_off, unpack_fields_off);
404 }
405 // Track memory usage statistic after releasing CodeCache_lock
406 MemoryService::track_code_cache_memory_usage();
407
408 return blob;
409 }
410
411 //----------------------------------------------------------------------------------------------------
412 // Implementation of RuntimeStub
413
414 RuntimeStub::RuntimeStub(
415 const char* name,
416 CodeBuffer* cb,
417 int size,
418 int frame_complete,
419 int frame_size,
420 OopMapSet* oop_maps,
421 bool caller_must_gc_arguments
422 )
423 : RuntimeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments)
424 {
425 }
426
427 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
428 CodeBuffer* cb,
429 int frame_complete,
430 int frame_size,
431 OopMapSet* oop_maps,
432 bool caller_must_gc_arguments)
433 {
434 RuntimeStub* stub = NULL;
435 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
436 {
437 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
438 unsigned int size = CodeBlob::allocation_size(cb, sizeof(RuntimeStub));
439 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
440 }
441
442 trace_new_stub(stub, "RuntimeStub - ", stub_name);
443
444 return stub;
445 }
446
447
448 void* RuntimeStub::operator new(size_t s, unsigned size) throw() {
449 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
450 if (!p) fatal("Initial size of CodeCache is too small");
451 return p;
452 }
453
454 // operator new shared by all singletons:
455 void* SingletonBlob::operator new(size_t s, unsigned size) throw() {
456 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
457 if (!p) fatal("Initial size of CodeCache is too small");
458 return p;
459 }
460
461
462 //----------------------------------------------------------------------------------------------------
463 // Implementation of DeoptimizationBlob
464
465 DeoptimizationBlob::DeoptimizationBlob(
466 CodeBuffer* cb,
467 int size,
468 OopMapSet* oop_maps,
469 int unpack_offset,
470 int unpack_with_exception_offset,
471 int unpack_with_reexecution_offset,
472 int frame_size
473 )
474 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps)
475 {
476 _unpack_offset = unpack_offset;
477 _unpack_with_exception = unpack_with_exception_offset;
478 _unpack_with_reexecution = unpack_with_reexecution_offset;
479 #ifdef COMPILER1
480 _unpack_with_exception_in_tls = -1;
481 #endif
482 }
483
484
485 DeoptimizationBlob* DeoptimizationBlob::create(
486 CodeBuffer* cb,
487 OopMapSet* oop_maps,
488 int unpack_offset,
489 int unpack_with_exception_offset,
490 int unpack_with_reexecution_offset,
491 int frame_size)
492 {
493 DeoptimizationBlob* blob = NULL;
494 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
495 {
496 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
497 unsigned int size = CodeBlob::allocation_size(cb, sizeof(DeoptimizationBlob));
498 blob = new (size) DeoptimizationBlob(cb,
499 size,
500 oop_maps,
501 unpack_offset,
502 unpack_with_exception_offset,
503 unpack_with_reexecution_offset,
504 frame_size);
505 }
506
507 trace_new_stub(blob, "DeoptimizationBlob");
508
509 return blob;
510 }
511
512
513 //----------------------------------------------------------------------------------------------------
514 // Implementation of UncommonTrapBlob
515
516 #ifdef COMPILER2
517 UncommonTrapBlob::UncommonTrapBlob(
518 CodeBuffer* cb,
519 int size,
520 OopMapSet* oop_maps,
521 int frame_size
522 )
523 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps)
524 {}
525
526
527 UncommonTrapBlob* UncommonTrapBlob::create(
528 CodeBuffer* cb,
529 OopMapSet* oop_maps,
530 int frame_size)
531 {
532 UncommonTrapBlob* blob = NULL;
533 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
534 {
535 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
536 unsigned int size = CodeBlob::allocation_size(cb, sizeof(UncommonTrapBlob));
537 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
538 }
539
540 trace_new_stub(blob, "UncommonTrapBlob");
541
542 return blob;
543 }
544
545
546 #endif // COMPILER2
547
548
549 //----------------------------------------------------------------------------------------------------
550 // Implementation of ExceptionBlob
551
552 #ifdef COMPILER2
553 ExceptionBlob::ExceptionBlob(
554 CodeBuffer* cb,
555 int size,
556 OopMapSet* oop_maps,
557 int frame_size
558 )
559 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps)
560 {}
561
562
563 ExceptionBlob* ExceptionBlob::create(
564 CodeBuffer* cb,
565 OopMapSet* oop_maps,
566 int frame_size)
567 {
568 ExceptionBlob* blob = NULL;
569 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
570 {
571 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
572 unsigned int size = CodeBlob::allocation_size(cb, sizeof(ExceptionBlob));
573 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
574 }
575
576 trace_new_stub(blob, "ExceptionBlob");
577
578 return blob;
579 }
580
581
582 #endif // COMPILER2
583
584
585 //----------------------------------------------------------------------------------------------------
586 // Implementation of SafepointBlob
587
588 SafepointBlob::SafepointBlob(
589 CodeBuffer* cb,
590 int size,
591 OopMapSet* oop_maps,
592 int frame_size
593 )
594 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps)
595 {}
596
597
598 SafepointBlob* SafepointBlob::create(
599 CodeBuffer* cb,
600 OopMapSet* oop_maps,
601 int frame_size)
602 {
603 SafepointBlob* blob = NULL;
604 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
605 {
606 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
607 unsigned int size = CodeBlob::allocation_size(cb, sizeof(SafepointBlob));
608 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
609 }
610
611 trace_new_stub(blob, "SafepointBlob");
612
613 return blob;
614 }
615
616
617 //----------------------------------------------------------------------------------------------------
618 // Verification and printing
619
620 void CodeBlob::print_on(outputStream* st) const {
621 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", p2i(this));
622 st->print_cr("Framesize: %d", _frame_size);
623 }
624
625 void CodeBlob::print() const { print_on(tty); }
626
627 void CodeBlob::print_value_on(outputStream* st) const {
628 st->print_cr("[CodeBlob]");
629 }
630
631 void CodeBlob::dump_for_addr(address addr, outputStream* st, bool verbose) const {
632 if (is_buffer_blob()) {
633 // the interpreter is generated into a buffer blob
634 InterpreterCodelet* i = Interpreter::codelet_containing(addr);
635 if (i != NULL) {
636 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in an Interpreter codelet", p2i(addr), (int)(addr - i->code_begin()));
637 i->print_on(st);
638 return;
639 }
640 if (Interpreter::contains(addr)) {
641 st->print_cr(INTPTR_FORMAT " is pointing into interpreter code"
642 " (not bytecode specific)", p2i(addr));
643 return;
644 }
645 //
646 if (AdapterHandlerLibrary::contains(this)) {
647 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in an AdapterHandler", p2i(addr), (int)(addr - code_begin()));
648 AdapterHandlerLibrary::print_handler_on(st, this);
649 }
650 // the stubroutines are generated into a buffer blob
651 StubCodeDesc* d = StubCodeDesc::desc_for(addr);
652 if (d != NULL) {
653 st->print_cr(INTPTR_FORMAT " is at begin+%d in a stub", p2i(addr), (int)(addr - d->begin()));
654 d->print_on(st);
655 st->cr();
656 return;
657 }
658 if (StubRoutines::contains(addr)) {
659 st->print_cr(INTPTR_FORMAT " is pointing to an (unnamed) stub routine", p2i(addr));
660 return;
661 }
662 // the InlineCacheBuffer is using stubs generated into a buffer blob
663 if (InlineCacheBuffer::contains(addr)) {
664 st->print_cr(INTPTR_FORMAT " is pointing into InlineCacheBuffer", p2i(addr));
665 return;
666 }
667 VtableStub* v = VtableStubs::stub_containing(addr);
668 if (v != NULL) {
669 st->print_cr(INTPTR_FORMAT " is at entry_point+%d in a vtable stub", p2i(addr), (int)(addr - v->entry_point()));
670 v->print_on(st);
671 st->cr();
672 return;
673 }
674 }
675 if (is_nmethod()) {
676 nmethod* nm = (nmethod*)this;
677 ResourceMark rm;
678 st->print(INTPTR_FORMAT " is at entry_point+%d in (nmethod*)" INTPTR_FORMAT,
679 p2i(addr), (int)(addr - nm->entry_point()), p2i(nm));
680 if (verbose) {
681 st->print(" for ");
682 nm->method()->print_value_on(st);
683 }
684 st->cr();
685 if (verbose && st == tty) {
686 // verbose is only ever true when called from findpc in debug.cpp
687 nm->print_nmethod(true);
688 } else {
689 nm->print(st);
690 }
691 return;
692 }
693 st->print_cr(INTPTR_FORMAT " is at code_begin+%d in ", p2i(addr), (int)(addr - code_begin()));
694 print_on(st);
695 }
696
697 void RuntimeBlob::verify() {
698 ShouldNotReachHere();
699 }
700
701 void BufferBlob::verify() {
702 // unimplemented
703 }
704
705 void BufferBlob::print_on(outputStream* st) const {
706 RuntimeBlob::print_on(st);
707 print_value_on(st);
708 }
709
710 void BufferBlob::print_value_on(outputStream* st) const {
711 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", p2i(this), name());
712 }
713
714 void RuntimeStub::verify() {
715 // unimplemented
716 }
717
718 void RuntimeStub::print_on(outputStream* st) const {
719 ttyLocker ttyl;
720 RuntimeBlob::print_on(st);
721 st->print("Runtime Stub (" INTPTR_FORMAT "): ", p2i(this));
722 st->print_cr("%s", name());
723 Disassembler::decode((RuntimeBlob*)this, st);
724 }
725
726 void RuntimeStub::print_value_on(outputStream* st) const {
727 st->print("RuntimeStub (" INTPTR_FORMAT "): ", p2i(this)); st->print("%s", name());
728 }
729
730 void SingletonBlob::verify() {
731 // unimplemented
732 }
733
734 void SingletonBlob::print_on(outputStream* st) const {
735 ttyLocker ttyl;
736 RuntimeBlob::print_on(st);
737 st->print_cr("%s", name());
738 Disassembler::decode((RuntimeBlob*)this, st);
739 }
740
741 void SingletonBlob::print_value_on(outputStream* st) const {
742 st->print_cr("%s", name());
743 }
744
745 void DeoptimizationBlob::print_value_on(outputStream* st) const {
746 st->print_cr("Deoptimization (frame not available)");
747 }
748
749 // Implementation of OptimizedEntryBlob
750
751 OptimizedEntryBlob::OptimizedEntryBlob(const char* name, int size, CodeBuffer* cb, intptr_t exception_handler_offset,
752 jobject receiver, ByteSize frame_data_offset) :
753 BufferBlob(name, sizeof(OptimizedEntryBlob), size, cb),
754 _exception_handler_offset(exception_handler_offset),
755 _receiver(receiver),
756 _frame_data_offset(frame_data_offset) {
757 CodeCache::commit(this);
758 }
759
760 OptimizedEntryBlob* OptimizedEntryBlob::create(const char* name, CodeBuffer* cb, intptr_t exception_handler_offset,
761 jobject receiver, ByteSize frame_data_offset) {
762 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
763
764 OptimizedEntryBlob* blob = nullptr;
765 unsigned int size = CodeBlob::allocation_size(cb, sizeof(OptimizedEntryBlob));
766 {
767 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
768 blob = new (size) OptimizedEntryBlob(name, size, cb, exception_handler_offset, receiver, frame_data_offset);
769 }
770 // Track memory usage statistic after releasing CodeCache_lock
771 MemoryService::track_code_cache_memory_usage();
772
773 return blob;
774 }
775
776 void OptimizedEntryBlob::oops_do(OopClosure* f, const frame& frame) {
777 frame_data_for_frame(frame)->old_handles->oops_do(f);
778 }
779
780 JavaFrameAnchor* OptimizedEntryBlob::jfa_for_frame(const frame& frame) const {
781 return &frame_data_for_frame(frame)->jfa;
782 }