Mercurial > hg > truffle
annotate src/share/vm/code/codeBlob.hpp @ 2428:5134fa1cfe63
7029036: Card-table verification hangs with all framework collectors, except G1, even before the first GC
Summary: When verifying clean card ranges, use memory-range-bounded iteration over oops of objects overlapping that range, thus avoiding the otherwise quadratic worst-case cost of scanning large object arrays.
Reviewed-by: jmasa, jwilhelm, tonyp
author | ysr |
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date | Thu, 24 Mar 2011 15:47:01 -0700 |
parents | f95d63e2154a |
children | 9508a52cbd32 167b70ff3abc |
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 | |
1972 | 25 #ifndef SHARE_VM_CODE_CODEBLOB_HPP |
26 #define SHARE_VM_CODE_CODEBLOB_HPP | |
27 | |
28 #include "asm/codeBuffer.hpp" | |
29 #include "compiler/oopMap.hpp" | |
30 #include "runtime/frame.hpp" | |
31 #include "runtime/handles.hpp" | |
32 | |
0 | 33 // CodeBlob - superclass for all entries in the CodeCache. |
34 // | |
35 // Suptypes are: | |
36 // nmethod : Compiled Java methods (include method that calls to native code) | |
37 // RuntimeStub : Call to VM runtime methods | |
38 // DeoptimizationBlob : Used for deoptimizatation | |
39 // ExceptionBlob : Used for stack unrolling | |
40 // SafepointBlob : Used to handle illegal instruction exceptions | |
41 // | |
42 // | |
43 // Layout: | |
44 // - header | |
45 // - relocation | |
1748 | 46 // - content space |
47 // - instruction space | |
0 | 48 // - data space |
49 class DeoptimizationBlob; | |
50 | |
51 class CodeBlob VALUE_OBJ_CLASS_SPEC { | |
52 | |
53 friend class VMStructs; | |
54 | |
55 private: | |
56 const char* _name; | |
57 int _size; // total size of CodeBlob in bytes | |
58 int _header_size; // size of header (depends on subclass) | |
59 int _relocation_size; // size of relocation | |
1748 | 60 int _content_offset; // offset to where content region begins (this includes consts, insts, stubs) |
61 int _code_offset; // offset to where instructions region begins (this includes insts, stubs) | |
0 | 62 int _frame_complete_offset; // instruction offsets in [0.._frame_complete_offset) have |
63 // not finished setting up their frame. Beware of pc's in | |
64 // that range. There is a similar range(s) on returns | |
65 // which we don't detect. | |
66 int _data_offset; // offset to where data region begins | |
67 int _frame_size; // size of stack frame | |
68 OopMapSet* _oop_maps; // OopMap for this CodeBlob | |
69 CodeComments _comments; | |
70 | |
71 friend class OopRecorder; | |
72 | |
73 public: | |
74 // Returns the space needed for CodeBlob | |
75 static unsigned int allocation_size(CodeBuffer* cb, int header_size); | |
76 | |
77 // Creation | |
78 // a) simple CodeBlob | |
79 // frame_complete is the offset from the beginning of the instructions | |
80 // to where the frame setup (from stackwalk viewpoint) is complete. | |
81 CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); | |
82 | |
83 // b) full CodeBlob | |
84 CodeBlob( | |
85 const char* name, | |
86 CodeBuffer* cb, | |
87 int header_size, | |
88 int size, | |
89 int frame_complete, | |
90 int frame_size, | |
91 OopMapSet* oop_maps | |
92 ); | |
93 | |
94 // Deletion | |
95 void flush(); | |
96 | |
97 // Typing | |
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98 virtual bool is_buffer_blob() const { return false; } |
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99 virtual bool is_nmethod() const { return false; } |
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100 virtual bool is_runtime_stub() const { return false; } |
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101 virtual bool is_deoptimization_stub() const { return false; } |
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102 virtual bool is_uncommon_trap_stub() const { return false; } |
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103 virtual bool is_exception_stub() const { return false; } |
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104 virtual bool is_safepoint_stub() const { return false; } |
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105 virtual bool is_adapter_blob() const { return false; } |
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106 virtual bool is_method_handles_adapter_blob() const { return false; } |
0 | 107 |
108 virtual bool is_compiled_by_c2() const { return false; } | |
109 virtual bool is_compiled_by_c1() const { return false; } | |
110 | |
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111 // Casting |
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112 nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
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113 |
0 | 114 // Boundaries |
115 address header_begin() const { return (address) this; } | |
116 address header_end() const { return ((address) this) + _header_size; }; | |
117 relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; | |
118 relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } | |
1748 | 119 address content_begin() const { return (address) header_begin() + _content_offset; } |
120 address content_end() const { return (address) header_begin() + _data_offset; } | |
121 address code_begin() const { return (address) header_begin() + _code_offset; } | |
122 address code_end() const { return (address) header_begin() + _data_offset; } | |
0 | 123 address data_begin() const { return (address) header_begin() + _data_offset; } |
124 address data_end() const { return (address) header_begin() + _size; } | |
125 | |
126 // Offsets | |
127 int relocation_offset() const { return _header_size; } | |
1748 | 128 int content_offset() const { return _content_offset; } |
129 int code_offset() const { return _code_offset; } | |
0 | 130 int data_offset() const { return _data_offset; } |
131 | |
132 // Sizes | |
133 int size() const { return _size; } | |
134 int header_size() const { return _header_size; } | |
135 int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } | |
1748 | 136 int content_size() const { return content_end() - content_begin(); } |
137 int code_size() const { return code_end() - code_begin(); } | |
138 int data_size() const { return data_end() - data_begin(); } | |
0 | 139 |
140 // Containment | |
1748 | 141 bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } |
0 | 142 bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } |
1748 | 143 bool content_contains(address addr) const { return content_begin() <= addr && addr < content_end(); } |
144 bool code_contains(address addr) const { return code_begin() <= addr && addr < code_end(); } | |
145 bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } | |
146 bool contains(address addr) const { return content_contains(addr); } | |
147 bool is_frame_complete_at(address addr) const { return code_contains(addr) && | |
148 addr >= code_begin() + _frame_complete_offset; } | |
0 | 149 |
150 // CodeCache support: really only used by the nmethods, but in order to get | |
151 // asserts and certain bookkeeping to work in the CodeCache they are defined | |
152 // virtual here. | |
153 virtual bool is_zombie() const { return false; } | |
154 virtual bool is_locked_by_vm() const { return false; } | |
155 | |
156 virtual bool is_unloaded() const { return false; } | |
157 virtual bool is_not_entrant() const { return false; } | |
158 | |
159 // GC support | |
160 virtual bool is_alive() const = 0; | |
161 | |
162 // OopMap for frame | |
163 OopMapSet* oop_maps() const { return _oop_maps; } | |
164 void set_oop_maps(OopMapSet* p); | |
165 OopMap* oop_map_for_return_address(address return_address); | |
166 virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } | |
167 | |
168 // Frame support | |
169 int frame_size() const { return _frame_size; } | |
170 void set_frame_size(int size) { _frame_size = size; } | |
171 | |
172 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
173 virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } | |
174 | |
175 // Naming | |
176 const char* name() const { return _name; } | |
177 void set_name(const char* name) { _name = name; } | |
178 | |
179 // Debugging | |
180 virtual void verify(); | |
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181 void print() const { print_on(tty); } |
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182 virtual void print_on(outputStream* st) const; |
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183 virtual void print_value_on(outputStream* st) const; |
0 | 184 |
185 // Print the comment associated with offset on stream, if there is one | |
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186 virtual void print_block_comment(outputStream* stream, address block_begin) { |
1748 | 187 intptr_t offset = (intptr_t)(block_begin - code_begin()); |
0 | 188 _comments.print_block_comment(stream, offset); |
189 } | |
190 | |
191 // Transfer ownership of comments to this CodeBlob | |
192 void set_comments(CodeComments& comments) { | |
193 _comments.assign(comments); | |
194 } | |
195 }; | |
196 | |
197 | |
198 //---------------------------------------------------------------------------------------------------- | |
199 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. | |
200 | |
201 class BufferBlob: public CodeBlob { | |
202 friend class VMStructs; | |
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203 friend class AdapterBlob; |
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204 friend class MethodHandlesAdapterBlob; |
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205 |
0 | 206 private: |
207 // Creation support | |
208 BufferBlob(const char* name, int size); | |
209 BufferBlob(const char* name, int size, CodeBuffer* cb); | |
210 | |
211 void* operator new(size_t s, unsigned size); | |
212 | |
213 public: | |
214 // Creation | |
215 static BufferBlob* create(const char* name, int buffer_size); | |
216 static BufferBlob* create(const char* name, CodeBuffer* cb); | |
217 | |
218 static void free(BufferBlob* buf); | |
219 | |
220 // Typing | |
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221 virtual bool is_buffer_blob() const { return true; } |
0 | 222 |
223 // GC/Verification support | |
224 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
225 bool is_alive() const { return true; } | |
226 | |
227 void verify(); | |
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228 void print_on(outputStream* st) const; |
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229 void print_value_on(outputStream* st) const; |
0 | 230 }; |
231 | |
232 | |
233 //---------------------------------------------------------------------------------------------------- | |
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234 // AdapterBlob: used to hold C2I/I2C adapters |
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235 |
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236 class AdapterBlob: public BufferBlob { |
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237 private: |
1663 | 238 AdapterBlob(int size, CodeBuffer* cb); |
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239 |
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240 public: |
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241 // Creation |
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242 static AdapterBlob* create(CodeBuffer* cb); |
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243 |
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244 // Typing |
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245 virtual bool is_adapter_blob() const { return true; } |
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246 }; |
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247 |
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248 |
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249 //---------------------------------------------------------------------------------------------------- |
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250 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters |
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251 |
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252 class MethodHandlesAdapterBlob: public BufferBlob { |
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253 private: |
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254 MethodHandlesAdapterBlob(int size) : BufferBlob("MethodHandles adapters", size) {} |
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255 MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {} |
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256 |
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257 public: |
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258 // Creation |
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259 static MethodHandlesAdapterBlob* create(int buffer_size); |
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260 |
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261 // Typing |
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262 virtual bool is_method_handles_adapter_blob() const { return true; } |
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263 }; |
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264 |
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265 |
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266 //---------------------------------------------------------------------------------------------------- |
0 | 267 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
268 | |
269 class RuntimeStub: public CodeBlob { | |
270 friend class VMStructs; | |
271 private: | |
272 bool _caller_must_gc_arguments; | |
273 | |
274 // Creation support | |
275 RuntimeStub( | |
276 const char* name, | |
277 CodeBuffer* cb, | |
278 int size, | |
279 int frame_complete, | |
280 int frame_size, | |
281 OopMapSet* oop_maps, | |
282 bool caller_must_gc_arguments | |
283 ); | |
284 | |
285 void* operator new(size_t s, unsigned size); | |
286 | |
287 public: | |
288 // Creation | |
289 static RuntimeStub* new_runtime_stub( | |
290 const char* stub_name, | |
291 CodeBuffer* cb, | |
292 int frame_complete, | |
293 int frame_size, | |
294 OopMapSet* oop_maps, | |
295 bool caller_must_gc_arguments | |
296 ); | |
297 | |
298 // Typing | |
299 bool is_runtime_stub() const { return true; } | |
300 | |
301 // GC support | |
302 bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } | |
303 | |
1748 | 304 address entry_point() { return code_begin(); } |
0 | 305 |
306 // GC/Verification support | |
307 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
308 bool is_alive() const { return true; } | |
309 | |
310 void verify(); | |
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311 void print_on(outputStream* st) const; |
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312 void print_value_on(outputStream* st) const; |
0 | 313 }; |
314 | |
315 | |
316 //---------------------------------------------------------------------------------------------------- | |
317 // Super-class for all blobs that exist in only one instance. Implements default behaviour. | |
318 | |
319 class SingletonBlob: public CodeBlob { | |
320 friend class VMStructs; | |
321 public: | |
322 SingletonBlob( | |
323 const char* name, | |
324 CodeBuffer* cb, | |
325 int header_size, | |
326 int size, | |
327 int frame_size, | |
328 OopMapSet* oop_maps | |
329 ) | |
330 : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) | |
1748 | 331 {}; |
0 | 332 |
1748 | 333 address entry_point() { return code_begin(); } |
0 | 334 |
1748 | 335 bool is_alive() const { return true; } |
336 | |
337 void verify(); // does nothing | |
338 void print_on(outputStream* st) const; | |
339 void print_value_on(outputStream* st) const; | |
0 | 340 }; |
341 | |
342 | |
343 //---------------------------------------------------------------------------------------------------- | |
344 // DeoptimizationBlob | |
345 | |
346 class DeoptimizationBlob: public SingletonBlob { | |
347 friend class VMStructs; | |
348 private: | |
349 int _unpack_offset; | |
350 int _unpack_with_exception; | |
351 int _unpack_with_reexecution; | |
352 | |
353 int _unpack_with_exception_in_tls; | |
354 | |
355 // Creation support | |
356 DeoptimizationBlob( | |
357 CodeBuffer* cb, | |
358 int size, | |
359 OopMapSet* oop_maps, | |
360 int unpack_offset, | |
361 int unpack_with_exception_offset, | |
362 int unpack_with_reexecution_offset, | |
363 int frame_size | |
364 ); | |
365 | |
366 void* operator new(size_t s, unsigned size); | |
367 | |
368 public: | |
369 // Creation | |
370 static DeoptimizationBlob* create( | |
371 CodeBuffer* cb, | |
372 OopMapSet* oop_maps, | |
373 int unpack_offset, | |
374 int unpack_with_exception_offset, | |
375 int unpack_with_reexecution_offset, | |
376 int frame_size | |
377 ); | |
378 | |
379 // Typing | |
380 bool is_deoptimization_stub() const { return true; } | |
381 const DeoptimizationBlob *as_deoptimization_stub() const { return this; } | |
382 bool exception_address_is_unpack_entry(address pc) const { | |
383 address unpack_pc = unpack(); | |
384 return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); | |
385 } | |
386 | |
387 | |
388 | |
389 | |
390 // GC for args | |
391 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } | |
392 | |
393 // Printing | |
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394 void print_value_on(outputStream* st) const; |
0 | 395 |
1748 | 396 address unpack() const { return code_begin() + _unpack_offset; } |
397 address unpack_with_exception() const { return code_begin() + _unpack_with_exception; } | |
398 address unpack_with_reexecution() const { return code_begin() + _unpack_with_reexecution; } | |
0 | 399 |
400 // Alternate entry point for C1 where the exception and issuing pc | |
401 // are in JavaThread::_exception_oop and JavaThread::_exception_pc | |
402 // instead of being in registers. This is needed because C1 doesn't | |
403 // model exception paths in a way that keeps these registers free so | |
404 // there may be live values in those registers during deopt. | |
405 void set_unpack_with_exception_in_tls_offset(int offset) { | |
406 _unpack_with_exception_in_tls = offset; | |
1748 | 407 assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); |
0 | 408 } |
1748 | 409 address unpack_with_exception_in_tls() const { return code_begin() + _unpack_with_exception_in_tls; } |
0 | 410 }; |
411 | |
412 | |
413 //---------------------------------------------------------------------------------------------------- | |
414 // UncommonTrapBlob (currently only used by Compiler 2) | |
415 | |
416 #ifdef COMPILER2 | |
417 | |
418 class UncommonTrapBlob: public SingletonBlob { | |
419 friend class VMStructs; | |
420 private: | |
421 // Creation support | |
422 UncommonTrapBlob( | |
423 CodeBuffer* cb, | |
424 int size, | |
425 OopMapSet* oop_maps, | |
426 int frame_size | |
427 ); | |
428 | |
429 void* operator new(size_t s, unsigned size); | |
430 | |
431 public: | |
432 // Creation | |
433 static UncommonTrapBlob* create( | |
434 CodeBuffer* cb, | |
435 OopMapSet* oop_maps, | |
436 int frame_size | |
437 ); | |
438 | |
439 // GC for args | |
440 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
441 | |
442 // Typing | |
443 bool is_uncommon_trap_stub() const { return true; } | |
444 }; | |
445 | |
446 | |
447 //---------------------------------------------------------------------------------------------------- | |
448 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) | |
449 | |
450 class ExceptionBlob: public SingletonBlob { | |
451 friend class VMStructs; | |
452 private: | |
453 // Creation support | |
454 ExceptionBlob( | |
455 CodeBuffer* cb, | |
456 int size, | |
457 OopMapSet* oop_maps, | |
458 int frame_size | |
459 ); | |
460 | |
461 void* operator new(size_t s, unsigned size); | |
462 | |
463 public: | |
464 // Creation | |
465 static ExceptionBlob* create( | |
466 CodeBuffer* cb, | |
467 OopMapSet* oop_maps, | |
468 int frame_size | |
469 ); | |
470 | |
471 // GC for args | |
472 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
473 | |
474 // Typing | |
475 bool is_exception_stub() const { return true; } | |
476 }; | |
477 #endif // COMPILER2 | |
478 | |
479 | |
480 //---------------------------------------------------------------------------------------------------- | |
481 // SafepointBlob: handles illegal_instruction exceptions during a safepoint | |
482 | |
483 class SafepointBlob: public SingletonBlob { | |
484 friend class VMStructs; | |
485 private: | |
486 // Creation support | |
487 SafepointBlob( | |
488 CodeBuffer* cb, | |
489 int size, | |
490 OopMapSet* oop_maps, | |
491 int frame_size | |
492 ); | |
493 | |
494 void* operator new(size_t s, unsigned size); | |
495 | |
496 public: | |
497 // Creation | |
498 static SafepointBlob* create( | |
499 CodeBuffer* cb, | |
500 OopMapSet* oop_maps, | |
501 int frame_size | |
502 ); | |
503 | |
504 // GC for args | |
505 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
506 | |
507 // Typing | |
508 bool is_safepoint_stub() const { return true; } | |
509 }; | |
1972 | 510 |
511 #endif // SHARE_VM_CODE_CODEBLOB_HPP |