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 }
135
136
137 // Creates a RuntimeBlob from a CodeBuffer
138 // and copy code and relocation info.
139 RuntimeBlob::RuntimeBlob(
140 const char* name,
141 CodeBuffer* cb,
142 int header_size,
143 int size,
144 int frame_complete,
145 int frame_size,
146 OopMapSet* oop_maps,
147 bool caller_must_gc_arguments
148 ) : CodeBlob(name, compiler_none, CodeBlobLayout((address) this, size, header_size, cb), cb, frame_complete, frame_size, oop_maps, caller_must_gc_arguments) {
149 cb->copy_code_and_locs_to(this);
150 }
151
152 void CodeBlob::flush() {
153 if (_oop_maps) {
154 FREE_C_HEAP_ARRAY(unsigned char, _oop_maps);
155 _oop_maps = NULL;
156 }
157 _strings.free();
158 }
159
160 void CodeBlob::set_oop_maps(OopMapSet* p) {
161 // Danger Will Robinson! This method allocates a big
162 // chunk of memory, its your job to free it.
163 if (p != NULL) {
164 _oop_maps = ImmutableOopMapSet::build_from(p);
165 } else {
166 _oop_maps = NULL;
167 }
168 }
169
170
171 void RuntimeBlob::trace_new_stub(RuntimeBlob* stub, const char* name1, const char* name2) {
172 // Do not hold the CodeCache lock during name formatting.
173 assert(!CodeCache_lock->owned_by_self(), "release CodeCache before registering the stub");
174
175 if (stub != NULL) {
176 char stub_id[256];
177 assert(strlen(name1) + strlen(name2) < sizeof(stub_id), "");
178 jio_snprintf(stub_id, sizeof(stub_id), "%s%s", name1, name2);
179 if (PrintStubCode) {
180 ttyLocker ttyl;
181 tty->print_cr("Decoding %s " INTPTR_FORMAT, stub_id, (intptr_t) stub);
182 Disassembler::decode(stub->code_begin(), stub->code_end());
183 tty->cr();
184 }
185 Forte::register_stub(stub_id, stub->code_begin(), stub->code_end());
186
187 if (JvmtiExport::should_post_dynamic_code_generated()) {
188 const char* stub_name = name2;
189 if (name2[0] == '\0') stub_name = name1;
190 JvmtiExport::post_dynamic_code_generated(stub_name, stub->code_begin(), stub->code_end());
191 }
192 }
193
194 // Track memory usage statistic after releasing CodeCache_lock
195 MemoryService::track_code_cache_memory_usage();
196 }
197
198 const ImmutableOopMap* CodeBlob::oop_map_for_return_address(address return_address) {
199 assert(_oop_maps != NULL, "nope");
200 return _oop_maps->find_map_at_offset((intptr_t) return_address - (intptr_t) code_begin());
201 }
202
203 void CodeBlob::print_code() {
204 ResourceMark m;
205 Disassembler::decode(this, tty);
206 }
207
208 //----------------------------------------------------------------------------------------------------
209 // Implementation of BufferBlob
210
211
212 BufferBlob::BufferBlob(const char* name, int size)
213 : RuntimeBlob(name, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, /*locs_size:*/ 0)
214 {}
215
216 BufferBlob* BufferBlob::create(const char* name, int buffer_size) {
217 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
218
219 BufferBlob* blob = NULL;
220 unsigned int size = sizeof(BufferBlob);
221 // align the size to CodeEntryAlignment
222 size = CodeBlob::align_code_offset(size);
223 size += round_to(buffer_size, oopSize);
224 assert(name != NULL, "must provide a name");
225 {
226 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
227 blob = new (size) BufferBlob(name, size);
228 }
229 // Track memory usage statistic after releasing CodeCache_lock
230 MemoryService::track_code_cache_memory_usage();
231
232 return blob;
233 }
234
235
236 BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb)
237 : RuntimeBlob(name, cb, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, 0, NULL)
238 {}
239
240 BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) {
241 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
242
243 BufferBlob* blob = NULL;
244 unsigned int size = CodeBlob::allocation_size(cb, sizeof(BufferBlob));
245 assert(name != NULL, "must provide a name");
246 {
247 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
248 blob = new (size) BufferBlob(name, size, cb);
249 }
250 // Track memory usage statistic after releasing CodeCache_lock
251 MemoryService::track_code_cache_memory_usage();
252
253 return blob;
254 }
255
256 void* BufferBlob::operator new(size_t s, unsigned size) throw() {
257 return CodeCache::allocate(size, CodeBlobType::NonNMethod);
258 }
259
260 void BufferBlob::free(BufferBlob *blob) {
261 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
262 blob->flush();
263 {
264 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
265 CodeCache::free((RuntimeBlob*)blob);
266 }
267 // Track memory usage statistic after releasing CodeCache_lock
268 MemoryService::track_code_cache_memory_usage();
269 }
270
271
272 //----------------------------------------------------------------------------------------------------
273 // Implementation of AdapterBlob
274
275 AdapterBlob::AdapterBlob(int size, CodeBuffer* cb) :
276 BufferBlob("I2C/C2I adapters", size, cb) {
277 CodeCache::commit(this);
278 }
279
280 AdapterBlob* AdapterBlob::create(CodeBuffer* cb) {
281 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
282
283 AdapterBlob* blob = NULL;
284 unsigned int size = CodeBlob::allocation_size(cb, sizeof(AdapterBlob));
285 {
286 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
287 blob = new (size) AdapterBlob(size, cb);
288 }
289 // Track memory usage statistic after releasing CodeCache_lock
290 MemoryService::track_code_cache_memory_usage();
291
292 return blob;
293 }
294
295
296 //----------------------------------------------------------------------------------------------------
297 // Implementation of MethodHandlesAdapterBlob
298
299 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
300 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
301
302 MethodHandlesAdapterBlob* blob = NULL;
303 unsigned int size = sizeof(MethodHandlesAdapterBlob);
304 // align the size to CodeEntryAlignment
305 size = CodeBlob::align_code_offset(size);
306 size += round_to(buffer_size, oopSize);
307 {
308 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
309 blob = new (size) MethodHandlesAdapterBlob(size);
310 if (blob == NULL) {
311 vm_exit_out_of_memory(size, OOM_MALLOC_ERROR, "CodeCache: no room for method handle adapter blob");
312 }
313 }
314 // Track memory usage statistic after releasing CodeCache_lock
315 MemoryService::track_code_cache_memory_usage();
316
317 return blob;
318 }
319
320 //----------------------------------------------------------------------------------------------------
321 // Implementation of RuntimeStub
322
323 RuntimeStub::RuntimeStub(
324 const char* name,
325 CodeBuffer* cb,
326 int size,
327 int frame_complete,
328 int frame_size,
329 OopMapSet* oop_maps,
330 bool caller_must_gc_arguments
331 )
332 : RuntimeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments)
333 {
334 }
335
336 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
337 CodeBuffer* cb,
338 int frame_complete,
339 int frame_size,
340 OopMapSet* oop_maps,
341 bool caller_must_gc_arguments)
342 {
343 RuntimeStub* stub = NULL;
344 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
345 {
346 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
347 unsigned int size = CodeBlob::allocation_size(cb, sizeof(RuntimeStub));
348 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
349 }
350
351 trace_new_stub(stub, "RuntimeStub - ", stub_name);
352
353 return stub;
354 }
355
356
357 void* RuntimeStub::operator new(size_t s, unsigned size) throw() {
358 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
359 if (!p) fatal("Initial size of CodeCache is too small");
360 return p;
361 }
362
363 // operator new shared by all singletons:
364 void* SingletonBlob::operator new(size_t s, unsigned size) throw() {
365 void* p = CodeCache::allocate(size, CodeBlobType::NonNMethod);
366 if (!p) fatal("Initial size of CodeCache is too small");
367 return p;
368 }
369
370
371 //----------------------------------------------------------------------------------------------------
372 // Implementation of DeoptimizationBlob
373
374 DeoptimizationBlob::DeoptimizationBlob(
375 CodeBuffer* cb,
376 int size,
377 OopMapSet* oop_maps,
378 int unpack_offset,
379 int unpack_with_exception_offset,
380 int unpack_with_reexecution_offset,
381 int frame_size
382 )
383 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps)
384 {
385 _unpack_offset = unpack_offset;
386 _unpack_with_exception = unpack_with_exception_offset;
387 _unpack_with_reexecution = unpack_with_reexecution_offset;
388 #ifdef COMPILER1
389 _unpack_with_exception_in_tls = -1;
390 #endif
391 }
392
393
394 DeoptimizationBlob* DeoptimizationBlob::create(
395 CodeBuffer* cb,
396 OopMapSet* oop_maps,
397 int unpack_offset,
398 int unpack_with_exception_offset,
399 int unpack_with_reexecution_offset,
400 int frame_size)
401 {
402 DeoptimizationBlob* blob = NULL;
403 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
404 {
405 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
406 unsigned int size = CodeBlob::allocation_size(cb, sizeof(DeoptimizationBlob));
407 blob = new (size) DeoptimizationBlob(cb,
408 size,
409 oop_maps,
410 unpack_offset,
411 unpack_with_exception_offset,
412 unpack_with_reexecution_offset,
413 frame_size);
414 }
415
416 trace_new_stub(blob, "DeoptimizationBlob");
417
418 return blob;
419 }
420
421
422 //----------------------------------------------------------------------------------------------------
423 // Implementation of UncommonTrapBlob
424
425 #ifdef COMPILER2
426 UncommonTrapBlob::UncommonTrapBlob(
427 CodeBuffer* cb,
428 int size,
429 OopMapSet* oop_maps,
430 int frame_size
431 )
432 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps)
433 {}
434
435
436 UncommonTrapBlob* UncommonTrapBlob::create(
437 CodeBuffer* cb,
438 OopMapSet* oop_maps,
439 int frame_size)
440 {
441 UncommonTrapBlob* blob = NULL;
442 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
443 {
444 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
445 unsigned int size = CodeBlob::allocation_size(cb, sizeof(UncommonTrapBlob));
446 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
447 }
448
449 trace_new_stub(blob, "UncommonTrapBlob");
450
451 return blob;
452 }
453
454
455 #endif // COMPILER2
456
457
458 //----------------------------------------------------------------------------------------------------
459 // Implementation of ExceptionBlob
460
461 #ifdef COMPILER2
462 ExceptionBlob::ExceptionBlob(
463 CodeBuffer* cb,
464 int size,
465 OopMapSet* oop_maps,
466 int frame_size
467 )
468 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps)
469 {}
470
471
472 ExceptionBlob* ExceptionBlob::create(
473 CodeBuffer* cb,
474 OopMapSet* oop_maps,
475 int frame_size)
476 {
477 ExceptionBlob* blob = NULL;
478 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
479 {
480 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
481 unsigned int size = CodeBlob::allocation_size(cb, sizeof(ExceptionBlob));
482 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
483 }
484
485 trace_new_stub(blob, "ExceptionBlob");
486
487 return blob;
488 }
489
490
491 #endif // COMPILER2
492
493
494 //----------------------------------------------------------------------------------------------------
495 // Implementation of SafepointBlob
496
497 SafepointBlob::SafepointBlob(
498 CodeBuffer* cb,
499 int size,
500 OopMapSet* oop_maps,
501 int frame_size
502 )
503 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps)
504 {}
505
506
507 SafepointBlob* SafepointBlob::create(
508 CodeBuffer* cb,
509 OopMapSet* oop_maps,
510 int frame_size)
511 {
512 SafepointBlob* blob = NULL;
513 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
514 {
515 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
516 unsigned int size = CodeBlob::allocation_size(cb, sizeof(SafepointBlob));
517 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
518 }
519
520 trace_new_stub(blob, "SafepointBlob");
521
522 return blob;
523 }
524
525
526 //----------------------------------------------------------------------------------------------------
527 // Verification and printing
528
529 void CodeBlob::print_on(outputStream* st) const {
530 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", p2i(this));
531 st->print_cr("Framesize: %d", _frame_size);
532 }
533
534 void CodeBlob::print_value_on(outputStream* st) const {
535 st->print_cr("[CodeBlob]");
536 }
537
538 void RuntimeBlob::verify() {
539 ShouldNotReachHere();
540 }
541
542 void BufferBlob::verify() {
543 // unimplemented
544 }
545
546 void BufferBlob::print_on(outputStream* st) const {
547 RuntimeBlob::print_on(st);
548 print_value_on(st);
549 }
550
551 void BufferBlob::print_value_on(outputStream* st) const {
552 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", p2i(this), name());
553 }
554
555 void RuntimeStub::verify() {
556 // unimplemented
557 }
558
559 void RuntimeStub::print_on(outputStream* st) const {
560 ttyLocker ttyl;
561 RuntimeBlob::print_on(st);
562 st->print("Runtime Stub (" INTPTR_FORMAT "): ", p2i(this));
563 st->print_cr("%s", name());
564 Disassembler::decode((RuntimeBlob*)this, st);
565 }
566
567 void RuntimeStub::print_value_on(outputStream* st) const {
568 st->print("RuntimeStub (" INTPTR_FORMAT "): ", p2i(this)); st->print("%s", name());
569 }
570
571 void SingletonBlob::verify() {
572 // unimplemented
573 }
574
575 void SingletonBlob::print_on(outputStream* st) const {
576 ttyLocker ttyl;
577 RuntimeBlob::print_on(st);
578 st->print_cr("%s", name());
579 Disassembler::decode((RuntimeBlob*)this, st);
580 }
581
582 void SingletonBlob::print_value_on(outputStream* st) const {
583 st->print_cr("%s", name());
584 }
585
586 void DeoptimizationBlob::print_value_on(outputStream* st) const {
587 st->print_cr("Deoptimization (frame not available)");
588 }