Mercurial > hg > graal-compiler
annotate src/share/vm/code/codeBlob.hpp @ 1751:2528b5bd749c
6980262: Memory leak when exception is thrown in static initializer
Summary: Use resource memory instead of c-heap for the exception message
Reviewed-by: phh, jmasa
author | kamg |
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date | Fri, 27 Aug 2010 15:05:28 -0400 |
parents | 126ea7725993 |
children | 3e8fbc61cee8 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // CodeBlob - superclass for all entries in the CodeCache. | |
26 // | |
27 // Suptypes are: | |
28 // nmethod : Compiled Java methods (include method that calls to native code) | |
29 // RuntimeStub : Call to VM runtime methods | |
30 // DeoptimizationBlob : Used for deoptimizatation | |
31 // ExceptionBlob : Used for stack unrolling | |
32 // SafepointBlob : Used to handle illegal instruction exceptions | |
33 // | |
34 // | |
35 // Layout: | |
36 // - header | |
37 // - relocation | |
38 // - instruction space | |
39 // - data space | |
40 class DeoptimizationBlob; | |
41 | |
42 class CodeBlob VALUE_OBJ_CLASS_SPEC { | |
43 | |
44 friend class VMStructs; | |
45 | |
46 private: | |
47 const char* _name; | |
48 int _size; // total size of CodeBlob in bytes | |
49 int _header_size; // size of header (depends on subclass) | |
50 int _relocation_size; // size of relocation | |
51 int _instructions_offset; // offset to where instructions region begins | |
52 int _frame_complete_offset; // instruction offsets in [0.._frame_complete_offset) have | |
53 // not finished setting up their frame. Beware of pc's in | |
54 // that range. There is a similar range(s) on returns | |
55 // which we don't detect. | |
56 int _data_offset; // offset to where data region begins | |
57 int _frame_size; // size of stack frame | |
58 OopMapSet* _oop_maps; // OopMap for this CodeBlob | |
59 CodeComments _comments; | |
60 | |
61 friend class OopRecorder; | |
62 | |
63 public: | |
64 // Returns the space needed for CodeBlob | |
65 static unsigned int allocation_size(CodeBuffer* cb, int header_size); | |
66 | |
67 // Creation | |
68 // a) simple CodeBlob | |
69 // frame_complete is the offset from the beginning of the instructions | |
70 // to where the frame setup (from stackwalk viewpoint) is complete. | |
71 CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); | |
72 | |
73 // b) full CodeBlob | |
74 CodeBlob( | |
75 const char* name, | |
76 CodeBuffer* cb, | |
77 int header_size, | |
78 int size, | |
79 int frame_complete, | |
80 int frame_size, | |
81 OopMapSet* oop_maps | |
82 ); | |
83 | |
84 // Deletion | |
85 void flush(); | |
86 | |
87 // Typing | |
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88 virtual bool is_buffer_blob() const { return false; } |
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89 virtual bool is_nmethod() const { return false; } |
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90 virtual bool is_runtime_stub() const { return false; } |
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91 virtual bool is_deoptimization_stub() const { return false; } |
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92 virtual bool is_uncommon_trap_stub() const { return false; } |
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93 virtual bool is_exception_stub() const { return false; } |
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94 virtual bool is_safepoint_stub() const { return false; } |
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95 virtual bool is_adapter_blob() const { return false; } |
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96 virtual bool is_method_handles_adapter_blob() const { return false; } |
0 | 97 |
98 virtual bool is_compiled_by_c2() const { return false; } | |
99 virtual bool is_compiled_by_c1() const { return false; } | |
100 | |
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101 // Casting |
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102 nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
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103 |
0 | 104 // Boundaries |
105 address header_begin() const { return (address) this; } | |
106 address header_end() const { return ((address) this) + _header_size; }; | |
107 relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; | |
108 relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } | |
109 address instructions_begin() const { return (address) header_begin() + _instructions_offset; } | |
110 address instructions_end() const { return (address) header_begin() + _data_offset; } | |
111 address data_begin() const { return (address) header_begin() + _data_offset; } | |
112 address data_end() const { return (address) header_begin() + _size; } | |
113 | |
114 // Offsets | |
115 int relocation_offset() const { return _header_size; } | |
116 int instructions_offset() const { return _instructions_offset; } | |
117 int data_offset() const { return _data_offset; } | |
118 | |
119 // Sizes | |
120 int size() const { return _size; } | |
121 int header_size() const { return _header_size; } | |
122 int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } | |
123 int instructions_size() const { return instructions_end() - instructions_begin(); } | |
124 int data_size() const { return data_end() - data_begin(); } | |
125 | |
126 // Containment | |
127 bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } | |
128 bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } | |
129 bool instructions_contains(address addr) const { return instructions_begin() <= addr && addr < instructions_end(); } | |
130 bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } | |
131 bool contains(address addr) const { return instructions_contains(addr); } | |
132 bool is_frame_complete_at(address addr) const { return instructions_contains(addr) && | |
133 addr >= instructions_begin() + _frame_complete_offset; } | |
134 | |
135 // CodeCache support: really only used by the nmethods, but in order to get | |
136 // asserts and certain bookkeeping to work in the CodeCache they are defined | |
137 // virtual here. | |
138 virtual bool is_zombie() const { return false; } | |
139 virtual bool is_locked_by_vm() const { return false; } | |
140 | |
141 virtual bool is_unloaded() const { return false; } | |
142 virtual bool is_not_entrant() const { return false; } | |
143 | |
144 // GC support | |
145 virtual bool is_alive() const = 0; | |
146 | |
147 // OopMap for frame | |
148 OopMapSet* oop_maps() const { return _oop_maps; } | |
149 void set_oop_maps(OopMapSet* p); | |
150 OopMap* oop_map_for_return_address(address return_address); | |
151 virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } | |
152 | |
153 // Frame support | |
154 int frame_size() const { return _frame_size; } | |
155 void set_frame_size(int size) { _frame_size = size; } | |
156 | |
157 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
158 virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } | |
159 | |
160 // Naming | |
161 const char* name() const { return _name; } | |
162 void set_name(const char* name) { _name = name; } | |
163 | |
164 // Debugging | |
165 virtual void verify(); | |
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166 void print() const { print_on(tty); } |
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167 virtual void print_on(outputStream* st) const; |
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168 virtual void print_value_on(outputStream* st) const; |
0 | 169 |
170 // Print the comment associated with offset on stream, if there is one | |
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171 virtual void print_block_comment(outputStream* stream, address block_begin) { |
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172 intptr_t offset = (intptr_t)(block_begin - instructions_begin()); |
0 | 173 _comments.print_block_comment(stream, offset); |
174 } | |
175 | |
176 // Transfer ownership of comments to this CodeBlob | |
177 void set_comments(CodeComments& comments) { | |
178 _comments.assign(comments); | |
179 } | |
180 }; | |
181 | |
182 | |
183 //---------------------------------------------------------------------------------------------------- | |
184 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. | |
185 | |
186 class BufferBlob: public CodeBlob { | |
187 friend class VMStructs; | |
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188 friend class AdapterBlob; |
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189 friend class MethodHandlesAdapterBlob; |
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190 |
0 | 191 private: |
192 // Creation support | |
193 BufferBlob(const char* name, int size); | |
194 BufferBlob(const char* name, int size, CodeBuffer* cb); | |
195 | |
196 void* operator new(size_t s, unsigned size); | |
197 | |
198 public: | |
199 // Creation | |
200 static BufferBlob* create(const char* name, int buffer_size); | |
201 static BufferBlob* create(const char* name, CodeBuffer* cb); | |
202 | |
203 static void free(BufferBlob* buf); | |
204 | |
205 // Typing | |
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206 virtual bool is_buffer_blob() const { return true; } |
0 | 207 |
208 // GC/Verification support | |
209 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
210 bool is_alive() const { return true; } | |
211 | |
212 void verify(); | |
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213 void print_on(outputStream* st) const; |
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214 void print_value_on(outputStream* st) const; |
0 | 215 }; |
216 | |
217 | |
218 //---------------------------------------------------------------------------------------------------- | |
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219 // AdapterBlob: used to hold C2I/I2C adapters |
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220 |
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221 class AdapterBlob: public BufferBlob { |
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222 private: |
1663 | 223 AdapterBlob(int size, CodeBuffer* cb); |
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224 |
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225 public: |
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226 // Creation |
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227 static AdapterBlob* create(CodeBuffer* cb); |
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228 |
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229 // Typing |
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230 virtual bool is_adapter_blob() const { return true; } |
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231 }; |
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232 |
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233 |
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234 //---------------------------------------------------------------------------------------------------- |
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235 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters |
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236 |
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237 class MethodHandlesAdapterBlob: public BufferBlob { |
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238 private: |
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239 MethodHandlesAdapterBlob(int size) : BufferBlob("MethodHandles adapters", size) {} |
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240 MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {} |
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241 |
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242 public: |
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243 // Creation |
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244 static MethodHandlesAdapterBlob* create(int buffer_size); |
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245 |
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246 // Typing |
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247 virtual bool is_method_handles_adapter_blob() const { return true; } |
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248 }; |
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249 |
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250 |
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251 //---------------------------------------------------------------------------------------------------- |
0 | 252 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
253 | |
254 class RuntimeStub: public CodeBlob { | |
255 friend class VMStructs; | |
256 private: | |
257 bool _caller_must_gc_arguments; | |
258 | |
259 // Creation support | |
260 RuntimeStub( | |
261 const char* name, | |
262 CodeBuffer* cb, | |
263 int size, | |
264 int frame_complete, | |
265 int frame_size, | |
266 OopMapSet* oop_maps, | |
267 bool caller_must_gc_arguments | |
268 ); | |
269 | |
270 void* operator new(size_t s, unsigned size); | |
271 | |
272 public: | |
273 // Creation | |
274 static RuntimeStub* new_runtime_stub( | |
275 const char* stub_name, | |
276 CodeBuffer* cb, | |
277 int frame_complete, | |
278 int frame_size, | |
279 OopMapSet* oop_maps, | |
280 bool caller_must_gc_arguments | |
281 ); | |
282 | |
283 // Typing | |
284 bool is_runtime_stub() const { return true; } | |
285 | |
286 // GC support | |
287 bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } | |
288 | |
289 address entry_point() { return instructions_begin(); } | |
290 | |
291 // GC/Verification support | |
292 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
293 bool is_alive() const { return true; } | |
294 | |
295 void verify(); | |
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296 void print_on(outputStream* st) const; |
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297 void print_value_on(outputStream* st) const; |
0 | 298 }; |
299 | |
300 | |
301 //---------------------------------------------------------------------------------------------------- | |
302 // Super-class for all blobs that exist in only one instance. Implements default behaviour. | |
303 | |
304 class SingletonBlob: public CodeBlob { | |
305 friend class VMStructs; | |
306 public: | |
307 SingletonBlob( | |
308 const char* name, | |
309 CodeBuffer* cb, | |
310 int header_size, | |
311 int size, | |
312 int frame_size, | |
313 OopMapSet* oop_maps | |
314 ) | |
315 : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) | |
316 {}; | |
317 | |
318 bool is_alive() const { return true; } | |
319 | |
320 void verify(); // does nothing | |
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321 void print_on(outputStream* st) const; |
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322 void print_value_on(outputStream* st) const; |
0 | 323 }; |
324 | |
325 | |
326 //---------------------------------------------------------------------------------------------------- | |
327 // DeoptimizationBlob | |
328 | |
329 class DeoptimizationBlob: public SingletonBlob { | |
330 friend class VMStructs; | |
331 private: | |
332 int _unpack_offset; | |
333 int _unpack_with_exception; | |
334 int _unpack_with_reexecution; | |
335 | |
336 int _unpack_with_exception_in_tls; | |
337 | |
338 // Creation support | |
339 DeoptimizationBlob( | |
340 CodeBuffer* cb, | |
341 int size, | |
342 OopMapSet* oop_maps, | |
343 int unpack_offset, | |
344 int unpack_with_exception_offset, | |
345 int unpack_with_reexecution_offset, | |
346 int frame_size | |
347 ); | |
348 | |
349 void* operator new(size_t s, unsigned size); | |
350 | |
351 public: | |
352 // Creation | |
353 static DeoptimizationBlob* create( | |
354 CodeBuffer* cb, | |
355 OopMapSet* oop_maps, | |
356 int unpack_offset, | |
357 int unpack_with_exception_offset, | |
358 int unpack_with_reexecution_offset, | |
359 int frame_size | |
360 ); | |
361 | |
362 // Typing | |
363 bool is_deoptimization_stub() const { return true; } | |
364 const DeoptimizationBlob *as_deoptimization_stub() const { return this; } | |
365 bool exception_address_is_unpack_entry(address pc) const { | |
366 address unpack_pc = unpack(); | |
367 return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); | |
368 } | |
369 | |
370 | |
371 | |
372 | |
373 // GC for args | |
374 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } | |
375 | |
376 // Printing | |
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377 void print_value_on(outputStream* st) const; |
0 | 378 |
379 address unpack() const { return instructions_begin() + _unpack_offset; } | |
380 address unpack_with_exception() const { return instructions_begin() + _unpack_with_exception; } | |
381 address unpack_with_reexecution() const { return instructions_begin() + _unpack_with_reexecution; } | |
382 | |
383 // Alternate entry point for C1 where the exception and issuing pc | |
384 // are in JavaThread::_exception_oop and JavaThread::_exception_pc | |
385 // instead of being in registers. This is needed because C1 doesn't | |
386 // model exception paths in a way that keeps these registers free so | |
387 // there may be live values in those registers during deopt. | |
388 void set_unpack_with_exception_in_tls_offset(int offset) { | |
389 _unpack_with_exception_in_tls = offset; | |
390 assert(contains(instructions_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); | |
391 } | |
392 address unpack_with_exception_in_tls() const { return instructions_begin() + _unpack_with_exception_in_tls; } | |
393 }; | |
394 | |
395 | |
396 //---------------------------------------------------------------------------------------------------- | |
397 // UncommonTrapBlob (currently only used by Compiler 2) | |
398 | |
399 #ifdef COMPILER2 | |
400 | |
401 class UncommonTrapBlob: public SingletonBlob { | |
402 friend class VMStructs; | |
403 private: | |
404 // Creation support | |
405 UncommonTrapBlob( | |
406 CodeBuffer* cb, | |
407 int size, | |
408 OopMapSet* oop_maps, | |
409 int frame_size | |
410 ); | |
411 | |
412 void* operator new(size_t s, unsigned size); | |
413 | |
414 public: | |
415 // Creation | |
416 static UncommonTrapBlob* create( | |
417 CodeBuffer* cb, | |
418 OopMapSet* oop_maps, | |
419 int frame_size | |
420 ); | |
421 | |
422 // GC for args | |
423 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
424 | |
425 // Typing | |
426 bool is_uncommon_trap_stub() const { return true; } | |
427 }; | |
428 | |
429 | |
430 //---------------------------------------------------------------------------------------------------- | |
431 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) | |
432 | |
433 class ExceptionBlob: public SingletonBlob { | |
434 friend class VMStructs; | |
435 private: | |
436 // Creation support | |
437 ExceptionBlob( | |
438 CodeBuffer* cb, | |
439 int size, | |
440 OopMapSet* oop_maps, | |
441 int frame_size | |
442 ); | |
443 | |
444 void* operator new(size_t s, unsigned size); | |
445 | |
446 public: | |
447 // Creation | |
448 static ExceptionBlob* create( | |
449 CodeBuffer* cb, | |
450 OopMapSet* oop_maps, | |
451 int frame_size | |
452 ); | |
453 | |
454 // GC for args | |
455 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
456 | |
457 // Typing | |
458 bool is_exception_stub() const { return true; } | |
459 }; | |
460 #endif // COMPILER2 | |
461 | |
462 | |
463 //---------------------------------------------------------------------------------------------------- | |
464 // SafepointBlob: handles illegal_instruction exceptions during a safepoint | |
465 | |
466 class SafepointBlob: public SingletonBlob { | |
467 friend class VMStructs; | |
468 private: | |
469 // Creation support | |
470 SafepointBlob( | |
471 CodeBuffer* cb, | |
472 int size, | |
473 OopMapSet* oop_maps, | |
474 int frame_size | |
475 ); | |
476 | |
477 void* operator new(size_t s, unsigned size); | |
478 | |
479 public: | |
480 // Creation | |
481 static SafepointBlob* create( | |
482 CodeBuffer* cb, | |
483 OopMapSet* oop_maps, | |
484 int frame_size | |
485 ); | |
486 | |
487 // GC for args | |
488 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
489 | |
490 // Typing | |
491 bool is_safepoint_stub() const { return true; } | |
492 }; |