Mercurial > hg > truffle
annotate src/share/vm/code/codeBlob.cpp @ 1359:23b1b27ac76c
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
Summary: Make sure that two marking cycles do not overlap, i.e., a new one can only start after the concurrent marking thread finishes all its work. In the fix I piggy-back a couple of minor extra fixes: some general code reformatting for consistency (only around the code I modified), the removal of a field (G1CollectorPolicy::_should_initiate_conc_mark) which doesn't seem to be used at all (it's only set but never read), as well as moving the "is GC locker active" test earlier into the G1 pause / Full GC and using a more appropriate method for it.
Reviewed-by: johnc, jmasa, jcoomes, ysr
author | tonyp |
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date | Tue, 06 Apr 2010 10:59:45 -0400 |
parents | 9eba43136cb5 |
children | c18cbe5936b8 1a5913bf5e19 |
rev | line source |
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0 | 1 /* |
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2 * Copyright 1998-2010 Sun Microsystems, Inc. All Rights Reserved. |
0 | 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_codeBlob.cpp.incl" | |
27 | |
28 unsigned int align_code_offset(int offset) { | |
29 // align the size to CodeEntryAlignment | |
30 return | |
31 ((offset + (int)CodeHeap::header_size() + (CodeEntryAlignment-1)) & ~(CodeEntryAlignment-1)) | |
32 - (int)CodeHeap::header_size(); | |
33 } | |
34 | |
35 | |
36 // This must be consistent with the CodeBlob constructor's layout actions. | |
37 unsigned int CodeBlob::allocation_size(CodeBuffer* cb, int header_size) { | |
38 unsigned int size = header_size; | |
39 size += round_to(cb->total_relocation_size(), oopSize); | |
40 // align the size to CodeEntryAlignment | |
41 size = align_code_offset(size); | |
42 size += round_to(cb->total_code_size(), oopSize); | |
43 size += round_to(cb->total_oop_size(), oopSize); | |
44 return size; | |
45 } | |
46 | |
47 | |
48 // Creates a simple CodeBlob. Sets up the size of the different regions. | |
49 CodeBlob::CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size) { | |
50 assert(size == round_to(size, oopSize), "unaligned size"); | |
51 assert(locs_size == round_to(locs_size, oopSize), "unaligned size"); | |
52 assert(header_size == round_to(header_size, oopSize), "unaligned size"); | |
53 assert(!UseRelocIndex, "no space allocated for reloc index yet"); | |
54 | |
55 // Note: If UseRelocIndex is enabled, there needs to be (at least) one | |
56 // extra word for the relocation information, containing the reloc | |
57 // index table length. Unfortunately, the reloc index table imple- | |
58 // mentation is not easily understandable and thus it is not clear | |
59 // what exactly the format is supposed to be. For now, we just turn | |
60 // off the use of this table (gri 7/6/2000). | |
61 | |
62 _name = name; | |
63 _size = size; | |
64 _frame_complete_offset = frame_complete; | |
65 _header_size = header_size; | |
66 _relocation_size = locs_size; | |
67 _instructions_offset = align_code_offset(header_size + locs_size); | |
68 _data_offset = size; | |
69 _oops_offset = size; | |
70 _oops_length = 0; | |
71 _frame_size = 0; | |
72 set_oop_maps(NULL); | |
73 } | |
74 | |
75 | |
76 // Creates a CodeBlob from a CodeBuffer. Sets up the size of the different regions, | |
77 // and copy code and relocation info. | |
78 CodeBlob::CodeBlob( | |
79 const char* name, | |
80 CodeBuffer* cb, | |
81 int header_size, | |
82 int size, | |
83 int frame_complete, | |
84 int frame_size, | |
85 OopMapSet* oop_maps | |
86 ) { | |
87 assert(size == round_to(size, oopSize), "unaligned size"); | |
88 assert(header_size == round_to(header_size, oopSize), "unaligned size"); | |
89 | |
90 _name = name; | |
91 _size = size; | |
92 _frame_complete_offset = frame_complete; | |
93 _header_size = header_size; | |
94 _relocation_size = round_to(cb->total_relocation_size(), oopSize); | |
95 _instructions_offset = align_code_offset(header_size + _relocation_size); | |
96 _data_offset = _instructions_offset + round_to(cb->total_code_size(), oopSize); | |
97 _oops_offset = _size - round_to(cb->total_oop_size(), oopSize); | |
98 _oops_length = 0; // temporary, until the copy_oops handshake | |
99 assert(_oops_offset >= _data_offset, "codeBlob is too small"); | |
100 assert(_data_offset <= size, "codeBlob is too small"); | |
101 | |
102 cb->copy_code_and_locs_to(this); | |
103 set_oop_maps(oop_maps); | |
104 _frame_size = frame_size; | |
105 #ifdef COMPILER1 | |
106 // probably wrong for tiered | |
107 assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs"); | |
108 #endif // COMPILER1 | |
109 } | |
110 | |
111 | |
112 void CodeBlob::set_oop_maps(OopMapSet* p) { | |
113 // Danger Will Robinson! This method allocates a big | |
114 // chunk of memory, its your job to free it. | |
115 if (p != NULL) { | |
116 // We need to allocate a chunk big enough to hold the OopMapSet and all of its OopMaps | |
117 _oop_maps = (OopMapSet* )NEW_C_HEAP_ARRAY(unsigned char, p->heap_size()); | |
118 p->copy_to((address)_oop_maps); | |
119 } else { | |
120 _oop_maps = NULL; | |
121 } | |
122 } | |
123 | |
124 | |
125 void CodeBlob::flush() { | |
126 if (_oop_maps) { | |
127 FREE_C_HEAP_ARRAY(unsigned char, _oop_maps); | |
128 _oop_maps = NULL; | |
129 } | |
130 _comments.free(); | |
131 } | |
132 | |
133 | |
134 // Promote one word from an assembly-time handle to a live embedded oop. | |
135 inline void CodeBlob::initialize_immediate_oop(oop* dest, jobject handle) { | |
136 if (handle == NULL || | |
137 // As a special case, IC oops are initialized to 1 or -1. | |
138 handle == (jobject) Universe::non_oop_word()) { | |
139 (*dest) = (oop)handle; | |
140 } else { | |
141 (*dest) = JNIHandles::resolve_non_null(handle); | |
142 } | |
143 } | |
144 | |
145 | |
146 void CodeBlob::copy_oops(GrowableArray<jobject>* array) { | |
147 assert(_oops_length == 0, "do this handshake just once, please"); | |
148 int length = array->length(); | |
149 assert((address)(oops_begin() + length) <= data_end(), "oops big enough"); | |
150 oop* dest = oops_begin(); | |
151 for (int index = 0 ; index < length; index++) { | |
152 initialize_immediate_oop(&dest[index], array->at(index)); | |
153 } | |
154 _oops_length = length; | |
155 | |
156 // Now we can fix up all the oops in the code. | |
157 // We need to do this in the code because | |
158 // the assembler uses jobjects as placeholders. | |
159 // The code and relocations have already been | |
160 // initialized by the CodeBlob constructor, | |
161 // so it is valid even at this early point to | |
162 // iterate over relocations and patch the code. | |
163 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); | |
164 } | |
165 | |
166 | |
167 relocInfo::relocType CodeBlob::reloc_type_for_address(address pc) { | |
168 RelocIterator iter(this, pc, pc+1); | |
169 while (iter.next()) { | |
170 return (relocInfo::relocType) iter.type(); | |
171 } | |
172 // No relocation info found for pc | |
173 ShouldNotReachHere(); | |
174 return relocInfo::none; // dummy return value | |
175 } | |
176 | |
177 | |
178 bool CodeBlob::is_at_poll_return(address pc) { | |
179 RelocIterator iter(this, pc, pc+1); | |
180 while (iter.next()) { | |
181 if (iter.type() == relocInfo::poll_return_type) | |
182 return true; | |
183 } | |
184 return false; | |
185 } | |
186 | |
187 | |
188 bool CodeBlob::is_at_poll_or_poll_return(address pc) { | |
189 RelocIterator iter(this, pc, pc+1); | |
190 while (iter.next()) { | |
191 relocInfo::relocType t = iter.type(); | |
192 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) | |
193 return true; | |
194 } | |
195 return false; | |
196 } | |
197 | |
198 | |
199 void CodeBlob::fix_oop_relocations(address begin, address end, | |
200 bool initialize_immediates) { | |
201 // re-patch all oop-bearing instructions, just in case some oops moved | |
202 RelocIterator iter(this, begin, end); | |
203 while (iter.next()) { | |
204 if (iter.type() == relocInfo::oop_type) { | |
205 oop_Relocation* reloc = iter.oop_reloc(); | |
206 if (initialize_immediates && reloc->oop_is_immediate()) { | |
207 oop* dest = reloc->oop_addr(); | |
208 initialize_immediate_oop(dest, (jobject) *dest); | |
209 } | |
210 // Refresh the oop-related bits of this instruction. | |
211 reloc->fix_oop_relocation(); | |
212 } | |
213 | |
214 // There must not be any interfering patches or breakpoints. | |
215 assert(!(iter.type() == relocInfo::breakpoint_type | |
216 && iter.breakpoint_reloc()->active()), | |
217 "no active breakpoint"); | |
218 } | |
219 } | |
220 | |
221 void CodeBlob::do_unloading(BoolObjectClosure* is_alive, | |
222 OopClosure* keep_alive, | |
223 bool unloading_occurred) { | |
224 ShouldNotReachHere(); | |
225 } | |
226 | |
227 OopMap* CodeBlob::oop_map_for_return_address(address return_address) { | |
228 address pc = return_address ; | |
229 assert (oop_maps() != NULL, "nope"); | |
230 return oop_maps()->find_map_at_offset ((intptr_t) pc - (intptr_t) instructions_begin()); | |
231 } | |
232 | |
233 | |
234 //---------------------------------------------------------------------------------------------------- | |
235 // Implementation of BufferBlob | |
236 | |
237 | |
238 BufferBlob::BufferBlob(const char* name, int size) | |
239 : CodeBlob(name, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, /*locs_size:*/ 0) | |
240 {} | |
241 | |
242 BufferBlob* BufferBlob::create(const char* name, int buffer_size) { | |
243 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock | |
244 | |
245 BufferBlob* blob = NULL; | |
246 unsigned int size = sizeof(BufferBlob); | |
247 // align the size to CodeEntryAlignment | |
248 size = align_code_offset(size); | |
249 size += round_to(buffer_size, oopSize); | |
250 assert(name != NULL, "must provide a name"); | |
251 { | |
252 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
253 blob = new (size) BufferBlob(name, size); | |
254 } | |
255 // Track memory usage statistic after releasing CodeCache_lock | |
256 MemoryService::track_code_cache_memory_usage(); | |
257 | |
258 return blob; | |
259 } | |
260 | |
261 | |
262 BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb) | |
263 : CodeBlob(name, cb, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, 0, NULL) | |
264 {} | |
265 | |
266 BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) { | |
267 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock | |
268 | |
269 BufferBlob* blob = NULL; | |
270 unsigned int size = allocation_size(cb, sizeof(BufferBlob)); | |
271 assert(name != NULL, "must provide a name"); | |
272 { | |
273 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
274 blob = new (size) BufferBlob(name, size, cb); | |
275 } | |
276 // Track memory usage statistic after releasing CodeCache_lock | |
277 MemoryService::track_code_cache_memory_usage(); | |
278 | |
279 return blob; | |
280 } | |
281 | |
282 | |
283 void* BufferBlob::operator new(size_t s, unsigned size) { | |
284 void* p = CodeCache::allocate(size); | |
285 return p; | |
286 } | |
287 | |
288 | |
289 void BufferBlob::free( BufferBlob *blob ) { | |
290 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock | |
291 { | |
292 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
293 CodeCache::free((CodeBlob*)blob); | |
294 } | |
295 // Track memory usage statistic after releasing CodeCache_lock | |
296 MemoryService::track_code_cache_memory_usage(); | |
297 } | |
298 | |
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299 |
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300 //---------------------------------------------------------------------------------------------------- |
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301 // Implementation of AdapterBlob |
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302 |
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303 AdapterBlob* AdapterBlob::create(CodeBuffer* cb) { |
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304 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock |
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305 |
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306 AdapterBlob* blob = NULL; |
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307 unsigned int size = allocation_size(cb, sizeof(AdapterBlob)); |
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308 { |
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309 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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310 blob = new (size) AdapterBlob(size, cb); |
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311 } |
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312 // Track memory usage statistic after releasing CodeCache_lock |
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313 MemoryService::track_code_cache_memory_usage(); |
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314 |
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315 return blob; |
0 | 316 } |
317 | |
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318 |
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319 //---------------------------------------------------------------------------------------------------- |
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320 // Implementation of MethodHandlesAdapterBlob |
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321 |
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322 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) { |
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323 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock |
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324 |
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325 MethodHandlesAdapterBlob* blob = NULL; |
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326 unsigned int size = sizeof(MethodHandlesAdapterBlob); |
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327 // align the size to CodeEntryAlignment |
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328 size = align_code_offset(size); |
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329 size += round_to(buffer_size, oopSize); |
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330 { |
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331 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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332 blob = new (size) MethodHandlesAdapterBlob(size); |
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333 } |
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334 // Track memory usage statistic after releasing CodeCache_lock |
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335 MemoryService::track_code_cache_memory_usage(); |
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336 |
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337 return blob; |
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338 } |
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339 |
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340 |
0 | 341 //---------------------------------------------------------------------------------------------------- |
342 // Implementation of RuntimeStub | |
343 | |
344 RuntimeStub::RuntimeStub( | |
345 const char* name, | |
346 CodeBuffer* cb, | |
347 int size, | |
348 int frame_complete, | |
349 int frame_size, | |
350 OopMapSet* oop_maps, | |
351 bool caller_must_gc_arguments | |
352 ) | |
353 : CodeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps) | |
354 { | |
355 _caller_must_gc_arguments = caller_must_gc_arguments; | |
356 } | |
357 | |
358 | |
359 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name, | |
360 CodeBuffer* cb, | |
361 int frame_complete, | |
362 int frame_size, | |
363 OopMapSet* oop_maps, | |
364 bool caller_must_gc_arguments) | |
365 { | |
366 RuntimeStub* stub = NULL; | |
367 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock | |
368 { | |
369 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
370 unsigned int size = allocation_size(cb, sizeof(RuntimeStub)); | |
371 stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments); | |
372 } | |
373 | |
374 // Do not hold the CodeCache lock during name formatting. | |
375 if (stub != NULL) { | |
376 char stub_id[256]; | |
377 jio_snprintf(stub_id, sizeof(stub_id), "RuntimeStub - %s", stub_name); | |
378 if (PrintStubCode) { | |
379 tty->print_cr("Decoding %s " INTPTR_FORMAT, stub_id, stub); | |
380 Disassembler::decode(stub->instructions_begin(), stub->instructions_end()); | |
381 } | |
382 VTune::register_stub(stub_id, stub->instructions_begin(), stub->instructions_end()); | |
383 Forte::register_stub(stub_id, stub->instructions_begin(), stub->instructions_end()); | |
384 | |
385 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
386 JvmtiExport::post_dynamic_code_generated(stub_name, stub->instructions_begin(), stub->instructions_end()); | |
387 } | |
388 } | |
389 | |
390 // Track memory usage statistic after releasing CodeCache_lock | |
391 MemoryService::track_code_cache_memory_usage(); | |
392 | |
393 return stub; | |
394 } | |
395 | |
396 | |
397 void* RuntimeStub::operator new(size_t s, unsigned size) { | |
398 void* p = CodeCache::allocate(size); | |
399 if (!p) fatal("Initial size of CodeCache is too small"); | |
400 return p; | |
401 } | |
402 | |
403 | |
404 //---------------------------------------------------------------------------------------------------- | |
405 // Implementation of DeoptimizationBlob | |
406 | |
407 DeoptimizationBlob::DeoptimizationBlob( | |
408 CodeBuffer* cb, | |
409 int size, | |
410 OopMapSet* oop_maps, | |
411 int unpack_offset, | |
412 int unpack_with_exception_offset, | |
413 int unpack_with_reexecution_offset, | |
414 int frame_size | |
415 ) | |
416 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps) | |
417 { | |
418 _unpack_offset = unpack_offset; | |
419 _unpack_with_exception = unpack_with_exception_offset; | |
420 _unpack_with_reexecution = unpack_with_reexecution_offset; | |
421 #ifdef COMPILER1 | |
422 _unpack_with_exception_in_tls = -1; | |
423 #endif | |
424 } | |
425 | |
426 | |
427 DeoptimizationBlob* DeoptimizationBlob::create( | |
428 CodeBuffer* cb, | |
429 OopMapSet* oop_maps, | |
430 int unpack_offset, | |
431 int unpack_with_exception_offset, | |
432 int unpack_with_reexecution_offset, | |
433 int frame_size) | |
434 { | |
435 DeoptimizationBlob* blob = NULL; | |
436 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock | |
437 { | |
438 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
439 unsigned int size = allocation_size(cb, sizeof(DeoptimizationBlob)); | |
440 blob = new (size) DeoptimizationBlob(cb, | |
441 size, | |
442 oop_maps, | |
443 unpack_offset, | |
444 unpack_with_exception_offset, | |
445 unpack_with_reexecution_offset, | |
446 frame_size); | |
447 } | |
448 | |
449 // Do not hold the CodeCache lock during name formatting. | |
450 if (blob != NULL) { | |
451 char blob_id[256]; | |
452 jio_snprintf(blob_id, sizeof(blob_id), "DeoptimizationBlob@" PTR_FORMAT, blob->instructions_begin()); | |
453 if (PrintStubCode) { | |
454 tty->print_cr("Decoding %s " INTPTR_FORMAT, blob_id, blob); | |
455 Disassembler::decode(blob->instructions_begin(), blob->instructions_end()); | |
456 } | |
457 VTune::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end()); | |
458 Forte::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end()); | |
459 | |
460 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
461 JvmtiExport::post_dynamic_code_generated("DeoptimizationBlob", | |
462 blob->instructions_begin(), | |
463 blob->instructions_end()); | |
464 } | |
465 } | |
466 | |
467 // Track memory usage statistic after releasing CodeCache_lock | |
468 MemoryService::track_code_cache_memory_usage(); | |
469 | |
470 return blob; | |
471 } | |
472 | |
473 | |
474 void* DeoptimizationBlob::operator new(size_t s, unsigned size) { | |
475 void* p = CodeCache::allocate(size); | |
476 if (!p) fatal("Initial size of CodeCache is too small"); | |
477 return p; | |
478 } | |
479 | |
480 //---------------------------------------------------------------------------------------------------- | |
481 // Implementation of UncommonTrapBlob | |
482 | |
483 #ifdef COMPILER2 | |
484 UncommonTrapBlob::UncommonTrapBlob( | |
485 CodeBuffer* cb, | |
486 int size, | |
487 OopMapSet* oop_maps, | |
488 int frame_size | |
489 ) | |
490 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps) | |
491 {} | |
492 | |
493 | |
494 UncommonTrapBlob* UncommonTrapBlob::create( | |
495 CodeBuffer* cb, | |
496 OopMapSet* oop_maps, | |
497 int frame_size) | |
498 { | |
499 UncommonTrapBlob* blob = NULL; | |
500 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock | |
501 { | |
502 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
503 unsigned int size = allocation_size(cb, sizeof(UncommonTrapBlob)); | |
504 blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size); | |
505 } | |
506 | |
507 // Do not hold the CodeCache lock during name formatting. | |
508 if (blob != NULL) { | |
509 char blob_id[256]; | |
510 jio_snprintf(blob_id, sizeof(blob_id), "UncommonTrapBlob@" PTR_FORMAT, blob->instructions_begin()); | |
511 if (PrintStubCode) { | |
512 tty->print_cr("Decoding %s " INTPTR_FORMAT, blob_id, blob); | |
513 Disassembler::decode(blob->instructions_begin(), blob->instructions_end()); | |
514 } | |
515 VTune::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end()); | |
516 Forte::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end()); | |
517 | |
518 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
519 JvmtiExport::post_dynamic_code_generated("UncommonTrapBlob", | |
520 blob->instructions_begin(), | |
521 blob->instructions_end()); | |
522 } | |
523 } | |
524 | |
525 // Track memory usage statistic after releasing CodeCache_lock | |
526 MemoryService::track_code_cache_memory_usage(); | |
527 | |
528 return blob; | |
529 } | |
530 | |
531 | |
532 void* UncommonTrapBlob::operator new(size_t s, unsigned size) { | |
533 void* p = CodeCache::allocate(size); | |
534 if (!p) fatal("Initial size of CodeCache is too small"); | |
535 return p; | |
536 } | |
537 #endif // COMPILER2 | |
538 | |
539 | |
540 //---------------------------------------------------------------------------------------------------- | |
541 // Implementation of ExceptionBlob | |
542 | |
543 #ifdef COMPILER2 | |
544 ExceptionBlob::ExceptionBlob( | |
545 CodeBuffer* cb, | |
546 int size, | |
547 OopMapSet* oop_maps, | |
548 int frame_size | |
549 ) | |
550 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps) | |
551 {} | |
552 | |
553 | |
554 ExceptionBlob* ExceptionBlob::create( | |
555 CodeBuffer* cb, | |
556 OopMapSet* oop_maps, | |
557 int frame_size) | |
558 { | |
559 ExceptionBlob* blob = NULL; | |
560 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock | |
561 { | |
562 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
563 unsigned int size = allocation_size(cb, sizeof(ExceptionBlob)); | |
564 blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size); | |
565 } | |
566 | |
567 // We do not need to hold the CodeCache lock during name formatting | |
568 if (blob != NULL) { | |
569 char blob_id[256]; | |
570 jio_snprintf(blob_id, sizeof(blob_id), "ExceptionBlob@" PTR_FORMAT, blob->instructions_begin()); | |
571 if (PrintStubCode) { | |
572 tty->print_cr("Decoding %s " INTPTR_FORMAT, blob_id, blob); | |
573 Disassembler::decode(blob->instructions_begin(), blob->instructions_end()); | |
574 } | |
575 VTune::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end()); | |
576 Forte::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end()); | |
577 | |
578 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
579 JvmtiExport::post_dynamic_code_generated("ExceptionBlob", | |
580 blob->instructions_begin(), | |
581 blob->instructions_end()); | |
582 } | |
583 } | |
584 | |
585 // Track memory usage statistic after releasing CodeCache_lock | |
586 MemoryService::track_code_cache_memory_usage(); | |
587 | |
588 return blob; | |
589 } | |
590 | |
591 | |
592 void* ExceptionBlob::operator new(size_t s, unsigned size) { | |
593 void* p = CodeCache::allocate(size); | |
594 if (!p) fatal("Initial size of CodeCache is too small"); | |
595 return p; | |
596 } | |
597 #endif // COMPILER2 | |
598 | |
599 | |
600 //---------------------------------------------------------------------------------------------------- | |
601 // Implementation of SafepointBlob | |
602 | |
603 SafepointBlob::SafepointBlob( | |
604 CodeBuffer* cb, | |
605 int size, | |
606 OopMapSet* oop_maps, | |
607 int frame_size | |
608 ) | |
609 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps) | |
610 {} | |
611 | |
612 | |
613 SafepointBlob* SafepointBlob::create( | |
614 CodeBuffer* cb, | |
615 OopMapSet* oop_maps, | |
616 int frame_size) | |
617 { | |
618 SafepointBlob* blob = NULL; | |
619 ThreadInVMfromUnknown __tiv; // get to VM state in case we block on CodeCache_lock | |
620 { | |
621 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
622 unsigned int size = allocation_size(cb, sizeof(SafepointBlob)); | |
623 blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size); | |
624 } | |
625 | |
626 // We do not need to hold the CodeCache lock during name formatting. | |
627 if (blob != NULL) { | |
628 char blob_id[256]; | |
629 jio_snprintf(blob_id, sizeof(blob_id), "SafepointBlob@" PTR_FORMAT, blob->instructions_begin()); | |
630 if (PrintStubCode) { | |
631 tty->print_cr("Decoding %s " INTPTR_FORMAT, blob_id, blob); | |
632 Disassembler::decode(blob->instructions_begin(), blob->instructions_end()); | |
633 } | |
634 VTune::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end()); | |
635 Forte::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end()); | |
636 | |
637 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
638 JvmtiExport::post_dynamic_code_generated("SafepointBlob", | |
639 blob->instructions_begin(), | |
640 blob->instructions_end()); | |
641 } | |
642 } | |
643 | |
644 // Track memory usage statistic after releasing CodeCache_lock | |
645 MemoryService::track_code_cache_memory_usage(); | |
646 | |
647 return blob; | |
648 } | |
649 | |
650 | |
651 void* SafepointBlob::operator new(size_t s, unsigned size) { | |
652 void* p = CodeCache::allocate(size); | |
653 if (!p) fatal("Initial size of CodeCache is too small"); | |
654 return p; | |
655 } | |
656 | |
657 | |
658 //---------------------------------------------------------------------------------------------------- | |
659 // Verification and printing | |
660 | |
661 void CodeBlob::verify() { | |
662 ShouldNotReachHere(); | |
663 } | |
664 | |
665 #ifndef PRODUCT | |
666 | |
667 void CodeBlob::print() const { | |
668 tty->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", this); | |
669 tty->print_cr("Framesize: %d", _frame_size); | |
670 } | |
671 | |
672 | |
673 void CodeBlob::print_value_on(outputStream* st) const { | |
674 st->print_cr("[CodeBlob]"); | |
675 } | |
676 | |
677 #endif | |
678 | |
679 void BufferBlob::verify() { | |
680 // unimplemented | |
681 } | |
682 | |
683 #ifndef PRODUCT | |
684 | |
685 void BufferBlob::print() const { | |
686 CodeBlob::print(); | |
687 print_value_on(tty); | |
688 } | |
689 | |
690 | |
691 void BufferBlob::print_value_on(outputStream* st) const { | |
692 st->print_cr("BufferBlob (" INTPTR_FORMAT ") used for %s", this, name()); | |
693 } | |
694 | |
695 | |
696 #endif | |
697 | |
698 void RuntimeStub::verify() { | |
699 // unimplemented | |
700 } | |
701 | |
702 #ifndef PRODUCT | |
703 | |
704 void RuntimeStub::print() const { | |
705 CodeBlob::print(); | |
706 tty->print("Runtime Stub (" INTPTR_FORMAT "): ", this); | |
707 tty->print_cr(name()); | |
708 Disassembler::decode((CodeBlob*)this); | |
709 } | |
710 | |
711 | |
712 void RuntimeStub::print_value_on(outputStream* st) const { | |
713 st->print("RuntimeStub (" INTPTR_FORMAT "): ", this); st->print(name()); | |
714 } | |
715 | |
716 #endif | |
717 | |
718 void SingletonBlob::verify() { | |
719 // unimplemented | |
720 } | |
721 | |
722 #ifndef PRODUCT | |
723 | |
724 void SingletonBlob::print() const { | |
725 CodeBlob::print(); | |
726 tty->print_cr(name()); | |
727 Disassembler::decode((CodeBlob*)this); | |
728 } | |
729 | |
730 | |
731 void SingletonBlob::print_value_on(outputStream* st) const { | |
732 st->print_cr(name()); | |
733 } | |
734 | |
735 void DeoptimizationBlob::print_value_on(outputStream* st) const { | |
736 st->print_cr("Deoptimization (frame not available)"); | |
737 } | |
738 | |
739 #endif // PRODUCT |