1 /*
2 * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "code/codeBlob.hpp"
27 #include "code/codeCache.hpp"
28 #include "code/relocInfo.hpp"
29 #include "compiler/disassembler.hpp"
30 #include "interpreter/bytecode.hpp"
31 #include "memory/allocation.inline.hpp"
32 #include "memory/heap.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "prims/forte.hpp"
36 #include "runtime/handles.inline.hpp"
37 #include "runtime/interfaceSupport.hpp"
38 #include "runtime/mutexLocker.hpp"
39 #include "runtime/safepoint.hpp"
40 #include "runtime/sharedRuntime.hpp"
41 #include "runtime/vframe.hpp"
42 #include "services/memoryService.hpp"
43 #ifdef COMPILER1
44 #include "c1/c1_Runtime1.hpp"
45 #endif
46
47 const char* CodeBlob::compiler_name() const {
48 return compilertype2name(_type);
49 }
50
51 unsigned int CodeBlob::align_code_offset(int offset) {
52 // align the size to CodeEntryAlignment
53 return
54 ((offset + (int)CodeHeap::header_size() + (CodeEntryAlignment-1)) & ~(CodeEntryAlignment-1))
55 - (int)CodeHeap::header_size();
56 }
57
58
59 // This must be consistent with the CodeBlob constructor's layout actions.
60 unsigned int CodeBlob::allocation_size(CodeBuffer* cb, int header_size) {
61 unsigned int size = header_size;
62 size += round_to(cb->total_relocation_size(), oopSize);
63 // align the size to CodeEntryAlignment
64 size = align_code_offset(size);
65 size += round_to(cb->total_content_size(), oopSize);
66 size += round_to(cb->total_oop_size(), oopSize);
67 size += round_to(cb->total_metadata_size(), oopSize);
68 return size;
69 }
70
71 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) :
72 _name(name),
73 _size(layout.size()),
74 _header_size(layout.header_size()),
75 _frame_complete_offset(frame_complete_offset),
76 _data_offset(layout.data_offset()),
77 _frame_size(frame_size),
78 _strings(CodeStrings()),
79 _oop_maps(oop_maps),
80 _caller_must_gc_arguments(caller_must_gc_arguments),
81 _code_begin(layout.code_begin()),
82 _code_end(layout.code_end()),
83 _data_end(layout.data_end()),
84 _relocation_begin(layout.relocation_begin()),
85 _relocation_end(layout.relocation_end()),
86 _content_begin(layout.content_begin()),
87 _type(type)
88 {
89 assert(layout.size() == round_to(layout.size(), oopSize), "unaligned size");
90 assert(layout.header_size() == round_to(layout.header_size(), oopSize), "unaligned size");
91 assert(layout.relocation_size() == round_to(layout.relocation_size(), oopSize), "unaligned size");
92 assert(layout.code_end() == layout.content_end(), "must be the same - see code_end()");
93 #ifdef COMPILER1
94 // probably wrong for tiered
95 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs");
96 #endif // COMPILER1
97 }
98
99 CodeBlob::CodeBlob(const char* name, CompilerType type, const CodeBlobLayout& layout, CodeBuffer* cb, int frame_complete_offset, int frame_size, OopMapSet* oop_maps, bool caller_must_gc_arguments) :
100 _name(name),
101 _size(layout.size()),
102 _header_size(layout.header_size()),
103 _frame_complete_offset(frame_complete_offset),
104 _data_offset(layout.data_offset()),
105 _frame_size(frame_size),
106 _strings(CodeStrings()),
107 _caller_must_gc_arguments(caller_must_gc_arguments),
108 _code_begin(layout.code_begin()),
109 _code_end(layout.code_end()),
110 _data_end(layout.data_end()),
111 _relocation_begin(layout.relocation_begin()),
112 _relocation_end(layout.relocation_end()),
113 _content_begin(layout.content_begin()),
114 _type(type)
115 {
116 assert(_size == round_to(_size, oopSize), "unaligned size");
117 assert(_header_size == round_to(_header_size, oopSize), "unaligned size");
118 assert(_data_offset <= _size, "codeBlob is too small");
119 assert(layout.code_end() == layout.content_end(), "must be the same - see code_end()");
120
121 set_oop_maps(oop_maps);
122 #ifdef COMPILER1
123 // probably wrong for tiered
124 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs");
125 #endif // COMPILER1
126 }
127
128
129 // Creates a simple CodeBlob. Sets up the size of the different regions.
130 RuntimeBlob::RuntimeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size)
131 : CodeBlob(name, compiler_none, CodeBlobLayout((address) this, size, header_size, locs_size, size), frame_complete, 0, NULL, false /* caller_must_gc_arguments */)
132 {
133 assert(locs_size == round_to(locs_size, oopSize), "unaligned size");
134 assert(!UseRelocIndex, "no space allocated for reloc index yet");
135
136 // Note: If UseRelocIndex is enabled, there needs to be (at least) one
137 // extra word for the relocation information, containing the reloc
138 // index table length. Unfortunately, the reloc index table imple-
139 // mentation is not easily understandable and thus it is not clear
140 // what exactly the format is supposed to be. For now, we just turn
141 // off the use of this table (gri 7/6/2000).
142 }
143
144
145 // Creates a RuntimeBlob from a CodeBuffer
146 // and copy code and relocation info.
147 RuntimeBlob::RuntimeBlob(
148 const char* name,
149 CodeBuffer* cb,
150 int header_size,
151 int size,
152 int frame_complete,
153 int frame_size,
154 OopMapSet* oop_maps,
155 bool caller_must_gc_arguments
156 ) : CodeBlob(name, compiler_none, CodeBlobLayout((address) this, size, header_size, cb), cb, frame_complete, frame_size, oop_maps, caller_must_gc_arguments) {
157 cb->copy_code_and_locs_to(this);
158 }
159
160 void CodeBlob::flush() {
161 if (_oop_maps) {
162 FREE_C_HEAP_ARRAY(unsigned char, _oop_maps);
163 _oop_maps = NULL;
164 }
165 _strings.free();
166 }
167
168 void CodeBlob::set_oop_maps(OopMapSet* p) {
169 // Danger Will Robinson! This method allocates a big
170 // chunk of memory, its your job to free it.
171 if (p != NULL) {
172 _oop_maps = ImmutableOopMapSet::build_from(p);
173 } else {
174 _oop_maps = NULL;
175 }
176 }
177
178
179 void RuntimeBlob::trace_new_stub(RuntimeBlob* stub, const char* name1, const char* name2) {
180 // Do not hold the CodeCache lock during name formatting.
181 assert(!CodeCache_lock->owned_by_self(), "release CodeCache before registering the stub");
182
183 if (stub != NULL) {
184 char stub_id[256];
185 assert(strlen(name1) + strlen(name2) < sizeof(stub_id), "");
186 jio_snprintf(stub_id, sizeof(stub_id), "%s%s", name1, name2);
187 if (PrintStubCode) {
188 ttyLocker ttyl;
189 tty->print_cr("Decoding %s " INTPTR_FORMAT, stub_id, (intptr_t) stub);
190 Disassembler::decode(stub->code_begin(), stub->code_end());
191 tty->cr();
192 }
193 Forte::register_stub(stub_id, stub->code_begin(), stub->code_end());
194
195 if (JvmtiExport::should_post_dynamic_code_generated()) {
196 const char* stub_name = name2;
197 if (name2[0] == '\0') stub_name = name1;
198 JvmtiExport::post_dynamic_code_generated(stub_name, stub->code_begin(), stub->code_end());
199 }
200 }
201
202 // Track memory usage statistic after releasing CodeCache_lock
203 MemoryService::track_code_cache_memory_usage();
204 }
205
206 const ImmutableOopMap* CodeBlob::oop_map_for_return_address(address return_address) {
207 assert(_oop_maps != NULL, "nope");
208 return _oop_maps->find_map_at_offset((intptr_t) return_address - (intptr_t) code_begin());
209 }
210
211 void CodeBlob::print_code() {
212 ResourceMark m;
213 Disassembler::decode(this, tty);
214 }
215
216 //----------------------------------------------------------------------------------------------------
217 // Implementation of BufferBlob
218
219
220 BufferBlob::BufferBlob(const char* name, int size)
221 : RuntimeBlob(name, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, /*locs_size:*/ 0)
222 {}
223
224 BufferBlob* BufferBlob::create(const char* name, int buffer_size) {
225 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
226
227 BufferBlob* blob = NULL;
228 unsigned int size = sizeof(BufferBlob);
229 // align the size to CodeEntryAlignment
230 size = CodeBlob::align_code_offset(size);
231 size += round_to(buffer_size, oopSize);
232 assert(name != NULL, "must provide a name");
233 {
234 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
235 blob = new (size) BufferBlob(name, size);
236 }
237 // Track memory usage statistic after releasing CodeCache_lock
238 MemoryService::track_code_cache_memory_usage();
239
240 return blob;
241 }
242
243
244 BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb)
245 : RuntimeBlob(name, cb, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, 0, NULL)
246 {}
247
248 BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) {
249 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
250
251 BufferBlob* blob = NULL;
252 unsigned int size = CodeBlob::allocation_size(cb, sizeof(BufferBlob));
253 assert(name != NULL, "must provide a name");
254 {
255 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
256 blob = new (size) BufferBlob(name, size, cb);
257 }
258 // Track memory usage statistic after releasing CodeCache_lock
259 MemoryService::track_code_cache_memory_usage();
260
261 return blob;
262 }
263
264 void* BufferBlob::operator new(size_t s, unsigned size) throw() {
265 return CodeCache::allocate(size, CodeBlobType::NonNMethod);
266 }
267
268 void BufferBlob::free(BufferBlob *blob) {
269 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
270 blob->flush();
271 {
272 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
273 CodeCache::free((RuntimeBlob*)blob);
274 }
275 // Track memory usage statistic after releasing CodeCache_lock
276 MemoryService::track_code_cache_memory_usage();
277 }
278
279
280 //----------------------------------------------------------------------------------------------------
281 // Implementation of AdapterBlob
282
283 AdapterBlob::AdapterBlob(int size, CodeBuffer* cb) :
284 BufferBlob("I2C/C2I adapters", size, cb) {
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 AdapterBlob* blob = NULL;
292 unsigned int size = CodeBlob::allocation_size(cb, sizeof(AdapterBlob));
293 {
294 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
295 blob = new (size) AdapterBlob(size, cb);
296 }
297 // Track memory usage statistic after releasing CodeCache_lock
298 MemoryService::track_code_cache_memory_usage();
299
300 return blob;
301 }
302
303
304 //----------------------------------------------------------------------------------------------------
305 // Implementation of MethodHandlesAdapterBlob
306
307 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
308 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
309
310 MethodHandlesAdapterBlob* blob = NULL;
311 unsigned int size = sizeof(MethodHandlesAdapterBlob);
312 // align the size to CodeEntryAlignment
313 size = CodeBlob::align_code_offset(size);
314 size += round_to(buffer_size, oopSize);
315 {
316 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
317 blob = new (size) MethodHandlesAdapterBlob(size);
318 if (blob == NULL) {
319 vm_exit_out_of_memory(size, OOM_MALLOC_ERROR, "CodeCache: no room for method handle adapter blob");
320 }
321 }
322 // Track memory usage statistic after releasing CodeCache_lock
323 MemoryService::track_code_cache_memory_usage();
324
325 return blob;
326 }
327
328 //----------------------------------------------------------------------------------------------------
329 // Implementation of RuntimeStub
330
331 RuntimeStub::RuntimeStub(
332 const char* name,
333 CodeBuffer* cb,
334 int size,
335 int frame_complete,
336 int frame_size,
337 OopMapSet* oop_maps,
338 bool caller_must_gc_arguments
339 )
340 : RuntimeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments)
341 {
342 }
343
344 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
345 CodeBuffer* cb,
346 int frame_complete,
347 int frame_size,
348 OopMapSet* oop_maps,
349 bool caller_must_gc_arguments)
350 {
351 RuntimeStub* stub = NULL;
352 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
353 {
354 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
355 unsigned int size = CodeBlob::allocation_size(cb, sizeof(RuntimeStub));
356 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
357 }
358
359 trace_new_stub(stub, "RuntimeStub - ", stub_name);
360
361 return stub;
362 }
363
364
365 void* RuntimeStub::operator new(size_t s, unsigned size) throw() {
366 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
367 if (!p) fatal("Initial size of CodeCache is too small");
368 return p;
369 }
370
371 // operator new shared by all singletons:
372 void* SingletonBlob::operator new(size_t s, unsigned size) throw() {
373 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
374 if (!p) fatal("Initial size of CodeCache is too small");
375 return p;
376 }
377
378
379 //----------------------------------------------------------------------------------------------------
380 // Implementation of DeoptimizationBlob
381
382 DeoptimizationBlob::DeoptimizationBlob(
383 CodeBuffer* cb,
384 int size,
385 OopMapSet* oop_maps,
386 int unpack_offset,
387 int unpack_with_exception_offset,
388 int unpack_with_reexecution_offset,
389 int frame_size
390 )
391 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps)
392 {
393 _unpack_offset = unpack_offset;
394 _unpack_with_exception = unpack_with_exception_offset;
395 _unpack_with_reexecution = unpack_with_reexecution_offset;
396 #ifdef COMPILER1
397 _unpack_with_exception_in_tls = -1;
398 #endif
399 }
400
401
402 DeoptimizationBlob* DeoptimizationBlob::create(
403 CodeBuffer* cb,
404 OopMapSet* oop_maps,
405 int unpack_offset,
406 int unpack_with_exception_offset,
407 int unpack_with_reexecution_offset,
408 int frame_size)
409 {
410 DeoptimizationBlob* blob = NULL;
411 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
412 {
413 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
414 unsigned int size = CodeBlob::allocation_size(cb, sizeof(DeoptimizationBlob));
415 blob = new (size) DeoptimizationBlob(cb,
416 size,
417 oop_maps,
418 unpack_offset,
419 unpack_with_exception_offset,
420 unpack_with_reexecution_offset,
421 frame_size);
422 }
423
424 trace_new_stub(blob, "DeoptimizationBlob");
425
426 return blob;
427 }
428
429
430 //----------------------------------------------------------------------------------------------------
431 // Implementation of UncommonTrapBlob
432
433 #ifdef COMPILER2
434 UncommonTrapBlob::UncommonTrapBlob(
435 CodeBuffer* cb,
436 int size,
437 OopMapSet* oop_maps,
438 int frame_size
439 )
440 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps)
441 {}
442
443
444 UncommonTrapBlob* UncommonTrapBlob::create(
445 CodeBuffer* cb,
446 OopMapSet* oop_maps,
447 int frame_size)
448 {
449 UncommonTrapBlob* blob = NULL;
450 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
451 {
452 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
453 unsigned int size = CodeBlob::allocation_size(cb, sizeof(UncommonTrapBlob));
454 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
455 }
456
457 trace_new_stub(blob, "UncommonTrapBlob");
458
459 return blob;
460 }
461
462
463 #endif // COMPILER2
464
465
466 //----------------------------------------------------------------------------------------------------
467 // Implementation of ExceptionBlob
468
469 #ifdef COMPILER2
470 ExceptionBlob::ExceptionBlob(
471 CodeBuffer* cb,
472 int size,
473 OopMapSet* oop_maps,
474 int frame_size
475 )
476 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps)
477 {}
478
479
480 ExceptionBlob* ExceptionBlob::create(
481 CodeBuffer* cb,
482 OopMapSet* oop_maps,
483 int frame_size)
484 {
485 ExceptionBlob* blob = NULL;
486 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
487 {
488 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
489 unsigned int size = CodeBlob::allocation_size(cb, sizeof(ExceptionBlob));
490 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
491 }
492
493 trace_new_stub(blob, "ExceptionBlob");
494
495 return blob;
496 }
497
498
499 #endif // COMPILER2
500
501
502 //----------------------------------------------------------------------------------------------------
503 // Implementation of SafepointBlob
504
505 SafepointBlob::SafepointBlob(
506 CodeBuffer* cb,
507 int size,
508 OopMapSet* oop_maps,
509 int frame_size
510 )
511 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps)
512 {}
513
514
515 SafepointBlob* SafepointBlob::create(
516 CodeBuffer* cb,
517 OopMapSet* oop_maps,
518 int frame_size)
519 {
520 SafepointBlob* blob = NULL;
521 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
522 {
523 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
524 unsigned int size = CodeBlob::allocation_size(cb, sizeof(SafepointBlob));
525 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
526 }
527
528 trace_new_stub(blob, "SafepointBlob");
529
530 return blob;
531 }
532
533
534 //----------------------------------------------------------------------------------------------------
535 // Verification and printing
536
537 void CodeBlob::print_on(outputStream* st) const {
538 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", p2i(this));
539 st->print_cr("Framesize: %d", _frame_size);
540 }
541
542 void CodeBlob::print_value_on(outputStream* st) const {
543 st->print_cr("[CodeBlob]");
544 }
545
546 void RuntimeBlob::verify() {
547 ShouldNotReachHere();
548 }
549
550 void BufferBlob::verify() {
551 // unimplemented
552 }
553
554 void BufferBlob::print_on(outputStream* st) const {
555 RuntimeBlob::print_on(st);
556 print_value_on(st);
557 }
558
559 void BufferBlob::print_value_on(outputStream* st) const {
560 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", p2i(this), name());
561 }
562
563 void RuntimeStub::verify() {
564 // unimplemented
565 }
566
567 void RuntimeStub::print_on(outputStream* st) const {
568 ttyLocker ttyl;
569 RuntimeBlob::print_on(st);
570 st->print("Runtime Stub (" INTPTR_FORMAT "): ", p2i(this));
571 st->print_cr("%s", name());
572 Disassembler::decode((RuntimeBlob*)this, st);
573 }
574
575 void RuntimeStub::print_value_on(outputStream* st) const {
576 st->print("RuntimeStub (" INTPTR_FORMAT "): ", p2i(this)); st->print("%s", name());
577 }
578
579 void SingletonBlob::verify() {
580 // unimplemented
581 }
582
583 void SingletonBlob::print_on(outputStream* st) const {
584 ttyLocker ttyl;
585 RuntimeBlob::print_on(st);
586 st->print_cr("%s", name());
587 Disassembler::decode((RuntimeBlob*)this, st);
588 }
589
590 void SingletonBlob::print_value_on(outputStream* st) const {
591 st->print_cr("%s", name());
592 }
593
594 void DeoptimizationBlob::print_value_on(outputStream* st) const {
595 st->print_cr("Deoptimization (frame not available)");
596 }