Mon, 25 Jun 2012 21:33:35 -0400
7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table
Summary: Cannot delete _buckets and HashtableEntries in shared space (CDS)
Reviewed-by: acorn, kvn, dlong, dcubed, kamg
1 /*
2 * Copyright (c) 1998, 2011, 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 */
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 "oops/oop.inline.hpp"
34 #include "prims/forte.hpp"
35 #include "runtime/handles.inline.hpp"
36 #include "runtime/interfaceSupport.hpp"
37 #include "runtime/mutexLocker.hpp"
38 #include "runtime/safepoint.hpp"
39 #include "runtime/sharedRuntime.hpp"
40 #include "runtime/vframe.hpp"
41 #include "services/memoryService.hpp"
42 #ifdef TARGET_ARCH_x86
43 # include "nativeInst_x86.hpp"
44 #endif
45 #ifdef TARGET_ARCH_sparc
46 # include "nativeInst_sparc.hpp"
47 #endif
48 #ifdef TARGET_ARCH_zero
49 # include "nativeInst_zero.hpp"
50 #endif
51 #ifdef TARGET_ARCH_arm
52 # include "nativeInst_arm.hpp"
53 #endif
54 #ifdef TARGET_ARCH_ppc
55 # include "nativeInst_ppc.hpp"
56 #endif
57 #ifdef COMPILER1
58 #include "c1/c1_Runtime1.hpp"
59 #endif
61 unsigned int align_code_offset(int offset) {
62 // align the size to CodeEntryAlignment
63 return
64 ((offset + (int)CodeHeap::header_size() + (CodeEntryAlignment-1)) & ~(CodeEntryAlignment-1))
65 - (int)CodeHeap::header_size();
66 }
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 += round_to(cb->total_relocation_size(), oopSize);
73 // align the size to CodeEntryAlignment
74 size = align_code_offset(size);
75 size += round_to(cb->total_content_size(), oopSize);
76 size += round_to(cb->total_oop_size(), oopSize);
77 return size;
78 }
81 // Creates a simple CodeBlob. Sets up the size of the different regions.
82 CodeBlob::CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size) {
83 assert(size == round_to(size, oopSize), "unaligned size");
84 assert(locs_size == round_to(locs_size, oopSize), "unaligned size");
85 assert(header_size == round_to(header_size, oopSize), "unaligned size");
86 assert(!UseRelocIndex, "no space allocated for reloc index yet");
88 // Note: If UseRelocIndex is enabled, there needs to be (at least) one
89 // extra word for the relocation information, containing the reloc
90 // index table length. Unfortunately, the reloc index table imple-
91 // mentation is not easily understandable and thus it is not clear
92 // what exactly the format is supposed to be. For now, we just turn
93 // off the use of this table (gri 7/6/2000).
95 _name = name;
96 _size = size;
97 _frame_complete_offset = frame_complete;
98 _header_size = header_size;
99 _relocation_size = locs_size;
100 _content_offset = align_code_offset(header_size + _relocation_size);
101 _code_offset = _content_offset;
102 _data_offset = size;
103 _frame_size = 0;
104 set_oop_maps(NULL);
105 }
108 // Creates a CodeBlob from a CodeBuffer. Sets up the size of the different regions,
109 // and copy code and relocation info.
110 CodeBlob::CodeBlob(
111 const char* name,
112 CodeBuffer* cb,
113 int header_size,
114 int size,
115 int frame_complete,
116 int frame_size,
117 OopMapSet* oop_maps
118 ) {
119 assert(size == round_to(size, oopSize), "unaligned size");
120 assert(header_size == round_to(header_size, oopSize), "unaligned size");
122 _name = name;
123 _size = size;
124 _frame_complete_offset = frame_complete;
125 _header_size = header_size;
126 _relocation_size = round_to(cb->total_relocation_size(), oopSize);
127 _content_offset = align_code_offset(header_size + _relocation_size);
128 _code_offset = _content_offset + cb->total_offset_of(cb->insts());
129 _data_offset = _content_offset + round_to(cb->total_content_size(), oopSize);
130 assert(_data_offset <= size, "codeBlob is too small");
132 cb->copy_code_and_locs_to(this);
133 set_oop_maps(oop_maps);
134 _frame_size = frame_size;
135 #ifdef COMPILER1
136 // probably wrong for tiered
137 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs");
138 #endif // COMPILER1
139 }
142 void CodeBlob::set_oop_maps(OopMapSet* p) {
143 // Danger Will Robinson! This method allocates a big
144 // chunk of memory, its your job to free it.
145 if (p != NULL) {
146 // We need to allocate a chunk big enough to hold the OopMapSet and all of its OopMaps
147 _oop_maps = (OopMapSet* )NEW_C_HEAP_ARRAY(unsigned char, p->heap_size());
148 p->copy_to((address)_oop_maps);
149 } else {
150 _oop_maps = NULL;
151 }
152 }
155 void CodeBlob::trace_new_stub(CodeBlob* stub, const char* name1, const char* name2) {
156 // Do not hold the CodeCache lock during name formatting.
157 assert(!CodeCache_lock->owned_by_self(), "release CodeCache before registering the stub");
159 if (stub != NULL) {
160 char stub_id[256];
161 assert(strlen(name1) + strlen(name2) < sizeof(stub_id), "");
162 jio_snprintf(stub_id, sizeof(stub_id), "%s%s", name1, name2);
163 if (PrintStubCode) {
164 tty->print_cr("Decoding %s " INTPTR_FORMAT, stub_id, (intptr_t) stub);
165 Disassembler::decode(stub->code_begin(), stub->code_end());
166 }
167 Forte::register_stub(stub_id, stub->code_begin(), stub->code_end());
169 if (JvmtiExport::should_post_dynamic_code_generated()) {
170 const char* stub_name = name2;
171 if (name2[0] == '\0') stub_name = name1;
172 JvmtiExport::post_dynamic_code_generated(stub_name, stub->code_begin(), stub->code_end());
173 }
174 }
176 // Track memory usage statistic after releasing CodeCache_lock
177 MemoryService::track_code_cache_memory_usage();
178 }
181 void CodeBlob::flush() {
182 if (_oop_maps) {
183 FREE_C_HEAP_ARRAY(unsigned char, _oop_maps);
184 _oop_maps = NULL;
185 }
186 _comments.free();
187 }
190 OopMap* CodeBlob::oop_map_for_return_address(address return_address) {
191 assert(oop_maps() != NULL, "nope");
192 return oop_maps()->find_map_at_offset((intptr_t) return_address - (intptr_t) code_begin());
193 }
196 //----------------------------------------------------------------------------------------------------
197 // Implementation of BufferBlob
200 BufferBlob::BufferBlob(const char* name, int size)
201 : CodeBlob(name, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, /*locs_size:*/ 0)
202 {}
204 BufferBlob* BufferBlob::create(const char* name, int buffer_size) {
205 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
207 BufferBlob* blob = NULL;
208 unsigned int size = sizeof(BufferBlob);
209 // align the size to CodeEntryAlignment
210 size = align_code_offset(size);
211 size += round_to(buffer_size, oopSize);
212 assert(name != NULL, "must provide a name");
213 {
214 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
215 blob = new (size) BufferBlob(name, size);
216 }
217 // Track memory usage statistic after releasing CodeCache_lock
218 MemoryService::track_code_cache_memory_usage();
220 return blob;
221 }
224 BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb)
225 : CodeBlob(name, cb, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, 0, NULL)
226 {}
228 BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) {
229 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
231 BufferBlob* blob = NULL;
232 unsigned int size = allocation_size(cb, sizeof(BufferBlob));
233 assert(name != NULL, "must provide a name");
234 {
235 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
236 blob = new (size) BufferBlob(name, size, cb);
237 }
238 // Track memory usage statistic after releasing CodeCache_lock
239 MemoryService::track_code_cache_memory_usage();
241 return blob;
242 }
245 void* BufferBlob::operator new(size_t s, unsigned size) {
246 void* p = CodeCache::allocate(size);
247 return p;
248 }
251 void BufferBlob::free( BufferBlob *blob ) {
252 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
253 {
254 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
255 CodeCache::free((CodeBlob*)blob);
256 }
257 // Track memory usage statistic after releasing CodeCache_lock
258 MemoryService::track_code_cache_memory_usage();
259 }
262 //----------------------------------------------------------------------------------------------------
263 // Implementation of AdapterBlob
265 AdapterBlob::AdapterBlob(int size, CodeBuffer* cb) :
266 BufferBlob("I2C/C2I adapters", size, cb) {
267 CodeCache::commit(this);
268 }
270 AdapterBlob* AdapterBlob::create(CodeBuffer* cb) {
271 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
273 AdapterBlob* blob = NULL;
274 unsigned int size = allocation_size(cb, sizeof(AdapterBlob));
275 {
276 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
277 blob = new (size) AdapterBlob(size, cb);
278 }
279 // Track memory usage statistic after releasing CodeCache_lock
280 MemoryService::track_code_cache_memory_usage();
282 return blob;
283 }
286 //----------------------------------------------------------------------------------------------------
287 // Implementation of MethodHandlesAdapterBlob
289 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
290 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
292 MethodHandlesAdapterBlob* blob = NULL;
293 unsigned int size = sizeof(MethodHandlesAdapterBlob);
294 // align the size to CodeEntryAlignment
295 size = align_code_offset(size);
296 size += round_to(buffer_size, oopSize);
297 {
298 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
299 blob = new (size) MethodHandlesAdapterBlob(size);
300 }
301 // Track memory usage statistic after releasing CodeCache_lock
302 MemoryService::track_code_cache_memory_usage();
304 return blob;
305 }
308 //----------------------------------------------------------------------------------------------------
309 // Implementation of RuntimeStub
311 RuntimeStub::RuntimeStub(
312 const char* name,
313 CodeBuffer* cb,
314 int size,
315 int frame_complete,
316 int frame_size,
317 OopMapSet* oop_maps,
318 bool caller_must_gc_arguments
319 )
320 : CodeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps)
321 {
322 _caller_must_gc_arguments = caller_must_gc_arguments;
323 }
326 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
327 CodeBuffer* cb,
328 int frame_complete,
329 int frame_size,
330 OopMapSet* oop_maps,
331 bool caller_must_gc_arguments)
332 {
333 RuntimeStub* stub = NULL;
334 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
335 {
336 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
337 unsigned int size = allocation_size(cb, sizeof(RuntimeStub));
338 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
339 }
341 trace_new_stub(stub, "RuntimeStub - ", stub_name);
343 return stub;
344 }
347 void* RuntimeStub::operator new(size_t s, unsigned size) {
348 void* p = CodeCache::allocate(size);
349 if (!p) fatal("Initial size of CodeCache is too small");
350 return p;
351 }
353 // operator new shared by all singletons:
354 void* SingletonBlob::operator new(size_t s, unsigned size) {
355 void* p = CodeCache::allocate(size);
356 if (!p) fatal("Initial size of CodeCache is too small");
357 return p;
358 }
361 //----------------------------------------------------------------------------------------------------
362 // Implementation of RicochetBlob
364 RicochetBlob::RicochetBlob(
365 CodeBuffer* cb,
366 int size,
367 int bounce_offset,
368 int exception_offset,
369 int frame_size
370 )
371 : SingletonBlob("RicochetBlob", cb, sizeof(RicochetBlob), size, frame_size, (OopMapSet*) NULL)
372 {
373 _bounce_offset = bounce_offset;
374 _exception_offset = exception_offset;
375 }
378 RicochetBlob* RicochetBlob::create(
379 CodeBuffer* cb,
380 int bounce_offset,
381 int exception_offset,
382 int frame_size)
383 {
384 RicochetBlob* blob = NULL;
385 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
386 {
387 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
388 unsigned int size = allocation_size(cb, sizeof(RicochetBlob));
389 blob = new (size) RicochetBlob(cb, size, bounce_offset, exception_offset, frame_size);
390 }
392 trace_new_stub(blob, "RicochetBlob");
394 return blob;
395 }
398 //----------------------------------------------------------------------------------------------------
399 // Implementation of DeoptimizationBlob
401 DeoptimizationBlob::DeoptimizationBlob(
402 CodeBuffer* cb,
403 int size,
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 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps)
411 {
412 _unpack_offset = unpack_offset;
413 _unpack_with_exception = unpack_with_exception_offset;
414 _unpack_with_reexecution = unpack_with_reexecution_offset;
415 #ifdef COMPILER1
416 _unpack_with_exception_in_tls = -1;
417 #endif
418 }
421 DeoptimizationBlob* DeoptimizationBlob::create(
422 CodeBuffer* cb,
423 OopMapSet* oop_maps,
424 int unpack_offset,
425 int unpack_with_exception_offset,
426 int unpack_with_reexecution_offset,
427 int frame_size)
428 {
429 DeoptimizationBlob* blob = NULL;
430 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
431 {
432 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
433 unsigned int size = allocation_size(cb, sizeof(DeoptimizationBlob));
434 blob = new (size) DeoptimizationBlob(cb,
435 size,
436 oop_maps,
437 unpack_offset,
438 unpack_with_exception_offset,
439 unpack_with_reexecution_offset,
440 frame_size);
441 }
443 trace_new_stub(blob, "DeoptimizationBlob");
445 return blob;
446 }
449 //----------------------------------------------------------------------------------------------------
450 // Implementation of UncommonTrapBlob
452 #ifdef COMPILER2
453 UncommonTrapBlob::UncommonTrapBlob(
454 CodeBuffer* cb,
455 int size,
456 OopMapSet* oop_maps,
457 int frame_size
458 )
459 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps)
460 {}
463 UncommonTrapBlob* UncommonTrapBlob::create(
464 CodeBuffer* cb,
465 OopMapSet* oop_maps,
466 int frame_size)
467 {
468 UncommonTrapBlob* blob = NULL;
469 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
470 {
471 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
472 unsigned int size = allocation_size(cb, sizeof(UncommonTrapBlob));
473 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
474 }
476 trace_new_stub(blob, "UncommonTrapBlob");
478 return blob;
479 }
482 #endif // COMPILER2
485 //----------------------------------------------------------------------------------------------------
486 // Implementation of ExceptionBlob
488 #ifdef COMPILER2
489 ExceptionBlob::ExceptionBlob(
490 CodeBuffer* cb,
491 int size,
492 OopMapSet* oop_maps,
493 int frame_size
494 )
495 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps)
496 {}
499 ExceptionBlob* ExceptionBlob::create(
500 CodeBuffer* cb,
501 OopMapSet* oop_maps,
502 int frame_size)
503 {
504 ExceptionBlob* blob = NULL;
505 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
506 {
507 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
508 unsigned int size = allocation_size(cb, sizeof(ExceptionBlob));
509 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
510 }
512 trace_new_stub(blob, "ExceptionBlob");
514 return blob;
515 }
518 #endif // COMPILER2
521 //----------------------------------------------------------------------------------------------------
522 // Implementation of SafepointBlob
524 SafepointBlob::SafepointBlob(
525 CodeBuffer* cb,
526 int size,
527 OopMapSet* oop_maps,
528 int frame_size
529 )
530 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps)
531 {}
534 SafepointBlob* SafepointBlob::create(
535 CodeBuffer* cb,
536 OopMapSet* oop_maps,
537 int frame_size)
538 {
539 SafepointBlob* blob = NULL;
540 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock
541 {
542 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
543 unsigned int size = allocation_size(cb, sizeof(SafepointBlob));
544 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
545 }
547 trace_new_stub(blob, "SafepointBlob");
549 return blob;
550 }
553 //----------------------------------------------------------------------------------------------------
554 // Verification and printing
556 void CodeBlob::verify() {
557 ShouldNotReachHere();
558 }
560 void CodeBlob::print_on(outputStream* st) const {
561 st->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", this);
562 st->print_cr("Framesize: %d", _frame_size);
563 }
565 void CodeBlob::print_value_on(outputStream* st) const {
566 st->print_cr("[CodeBlob]");
567 }
569 void BufferBlob::verify() {
570 // unimplemented
571 }
573 void BufferBlob::print_on(outputStream* st) const {
574 CodeBlob::print_on(st);
575 print_value_on(st);
576 }
578 void BufferBlob::print_value_on(outputStream* st) const {
579 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", this, name());
580 }
582 void RuntimeStub::verify() {
583 // unimplemented
584 }
586 void RuntimeStub::print_on(outputStream* st) const {
587 CodeBlob::print_on(st);
588 st->print("Runtime Stub (" INTPTR_FORMAT "): ", this);
589 st->print_cr(name());
590 Disassembler::decode((CodeBlob*)this, st);
591 }
593 void RuntimeStub::print_value_on(outputStream* st) const {
594 st->print("RuntimeStub (" INTPTR_FORMAT "): ", this); st->print(name());
595 }
597 void SingletonBlob::verify() {
598 // unimplemented
599 }
601 void SingletonBlob::print_on(outputStream* st) const {
602 CodeBlob::print_on(st);
603 st->print_cr(name());
604 Disassembler::decode((CodeBlob*)this, st);
605 }
607 void SingletonBlob::print_value_on(outputStream* st) const {
608 st->print_cr(name());
609 }
611 void DeoptimizationBlob::print_value_on(outputStream* st) const {
612 st->print_cr("Deoptimization (frame not available)");
613 }