Mercurial > hg > truffle
annotate src/share/vm/code/codeBlob.hpp @ 1748:3e8fbc61cee8
6978355: renaming for 6961697
Summary: This is the renaming part of 6961697 to keep the actual changes small for review.
Reviewed-by: kvn, never
| author | twisti |
|---|---|
| date | Wed, 25 Aug 2010 05:27:54 -0700 |
| parents | 126ea7725993 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 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 | |
| 1748 | 38 // - content space |
| 39 // - instruction space | |
| 0 | 40 // - data space |
| 41 class DeoptimizationBlob; | |
| 42 | |
| 43 class CodeBlob VALUE_OBJ_CLASS_SPEC { | |
| 44 | |
| 45 friend class VMStructs; | |
| 46 | |
| 47 private: | |
| 48 const char* _name; | |
| 49 int _size; // total size of CodeBlob in bytes | |
| 50 int _header_size; // size of header (depends on subclass) | |
| 51 int _relocation_size; // size of relocation | |
| 1748 | 52 int _content_offset; // offset to where content region begins (this includes consts, insts, stubs) |
| 53 int _code_offset; // offset to where instructions region begins (this includes insts, stubs) | |
| 0 | 54 int _frame_complete_offset; // instruction offsets in [0.._frame_complete_offset) have |
| 55 // not finished setting up their frame. Beware of pc's in | |
| 56 // that range. There is a similar range(s) on returns | |
| 57 // which we don't detect. | |
| 58 int _data_offset; // offset to where data region begins | |
| 59 int _frame_size; // size of stack frame | |
| 60 OopMapSet* _oop_maps; // OopMap for this CodeBlob | |
| 61 CodeComments _comments; | |
| 62 | |
| 63 friend class OopRecorder; | |
| 64 | |
| 65 public: | |
| 66 // Returns the space needed for CodeBlob | |
| 67 static unsigned int allocation_size(CodeBuffer* cb, int header_size); | |
| 68 | |
| 69 // Creation | |
| 70 // a) simple CodeBlob | |
| 71 // frame_complete is the offset from the beginning of the instructions | |
| 72 // to where the frame setup (from stackwalk viewpoint) is complete. | |
| 73 CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); | |
| 74 | |
| 75 // b) full CodeBlob | |
| 76 CodeBlob( | |
| 77 const char* name, | |
| 78 CodeBuffer* cb, | |
| 79 int header_size, | |
| 80 int size, | |
| 81 int frame_complete, | |
| 82 int frame_size, | |
| 83 OopMapSet* oop_maps | |
| 84 ); | |
| 85 | |
| 86 // Deletion | |
| 87 void flush(); | |
| 88 | |
| 89 // Typing | |
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90 virtual bool is_buffer_blob() const { return false; } |
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91 virtual bool is_nmethod() const { return false; } |
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92 virtual bool is_runtime_stub() const { return false; } |
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93 virtual bool is_deoptimization_stub() const { return false; } |
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94 virtual bool is_uncommon_trap_stub() const { return false; } |
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95 virtual bool is_exception_stub() const { return false; } |
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96 virtual bool is_safepoint_stub() const { return false; } |
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97 virtual bool is_adapter_blob() const { return false; } |
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98 virtual bool is_method_handles_adapter_blob() const { return false; } |
| 0 | 99 |
| 100 virtual bool is_compiled_by_c2() const { return false; } | |
| 101 virtual bool is_compiled_by_c1() const { return false; } | |
| 102 | |
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103 // Casting |
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104 nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
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105 |
| 0 | 106 // Boundaries |
| 107 address header_begin() const { return (address) this; } | |
| 108 address header_end() const { return ((address) this) + _header_size; }; | |
| 109 relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; | |
| 110 relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } | |
| 1748 | 111 address content_begin() const { return (address) header_begin() + _content_offset; } |
| 112 address content_end() const { return (address) header_begin() + _data_offset; } | |
| 113 address code_begin() const { return (address) header_begin() + _code_offset; } | |
| 114 address code_end() const { return (address) header_begin() + _data_offset; } | |
| 0 | 115 address data_begin() const { return (address) header_begin() + _data_offset; } |
| 116 address data_end() const { return (address) header_begin() + _size; } | |
| 117 | |
| 118 // Offsets | |
| 119 int relocation_offset() const { return _header_size; } | |
| 1748 | 120 int content_offset() const { return _content_offset; } |
| 121 int code_offset() const { return _code_offset; } | |
| 0 | 122 int data_offset() const { return _data_offset; } |
| 123 | |
| 124 // Sizes | |
| 125 int size() const { return _size; } | |
| 126 int header_size() const { return _header_size; } | |
| 127 int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } | |
| 1748 | 128 int content_size() const { return content_end() - content_begin(); } |
| 129 int code_size() const { return code_end() - code_begin(); } | |
| 130 int data_size() const { return data_end() - data_begin(); } | |
| 0 | 131 |
| 132 // Containment | |
| 1748 | 133 bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } |
| 0 | 134 bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } |
| 1748 | 135 bool content_contains(address addr) const { return content_begin() <= addr && addr < content_end(); } |
| 136 bool code_contains(address addr) const { return code_begin() <= addr && addr < code_end(); } | |
| 137 bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } | |
| 138 bool contains(address addr) const { return content_contains(addr); } | |
| 139 bool is_frame_complete_at(address addr) const { return code_contains(addr) && | |
| 140 addr >= code_begin() + _frame_complete_offset; } | |
| 0 | 141 |
| 142 // CodeCache support: really only used by the nmethods, but in order to get | |
| 143 // asserts and certain bookkeeping to work in the CodeCache they are defined | |
| 144 // virtual here. | |
| 145 virtual bool is_zombie() const { return false; } | |
| 146 virtual bool is_locked_by_vm() const { return false; } | |
| 147 | |
| 148 virtual bool is_unloaded() const { return false; } | |
| 149 virtual bool is_not_entrant() const { return false; } | |
| 150 | |
| 151 // GC support | |
| 152 virtual bool is_alive() const = 0; | |
| 153 | |
| 154 // OopMap for frame | |
| 155 OopMapSet* oop_maps() const { return _oop_maps; } | |
| 156 void set_oop_maps(OopMapSet* p); | |
| 157 OopMap* oop_map_for_return_address(address return_address); | |
| 158 virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } | |
| 159 | |
| 160 // Frame support | |
| 161 int frame_size() const { return _frame_size; } | |
| 162 void set_frame_size(int size) { _frame_size = size; } | |
| 163 | |
| 164 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
| 165 virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } | |
| 166 | |
| 167 // Naming | |
| 168 const char* name() const { return _name; } | |
| 169 void set_name(const char* name) { _name = name; } | |
| 170 | |
| 171 // Debugging | |
| 172 virtual void verify(); | |
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173 void print() const { print_on(tty); } |
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174 virtual void print_on(outputStream* st) const; |
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175 virtual void print_value_on(outputStream* st) const; |
| 0 | 176 |
| 177 // Print the comment associated with offset on stream, if there is one | |
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178 virtual void print_block_comment(outputStream* stream, address block_begin) { |
| 1748 | 179 intptr_t offset = (intptr_t)(block_begin - code_begin()); |
| 0 | 180 _comments.print_block_comment(stream, offset); |
| 181 } | |
| 182 | |
| 183 // Transfer ownership of comments to this CodeBlob | |
| 184 void set_comments(CodeComments& comments) { | |
| 185 _comments.assign(comments); | |
| 186 } | |
| 187 }; | |
| 188 | |
| 189 | |
| 190 //---------------------------------------------------------------------------------------------------- | |
| 191 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. | |
| 192 | |
| 193 class BufferBlob: public CodeBlob { | |
| 194 friend class VMStructs; | |
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195 friend class AdapterBlob; |
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196 friend class MethodHandlesAdapterBlob; |
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197 |
| 0 | 198 private: |
| 199 // Creation support | |
| 200 BufferBlob(const char* name, int size); | |
| 201 BufferBlob(const char* name, int size, CodeBuffer* cb); | |
| 202 | |
| 203 void* operator new(size_t s, unsigned size); | |
| 204 | |
| 205 public: | |
| 206 // Creation | |
| 207 static BufferBlob* create(const char* name, int buffer_size); | |
| 208 static BufferBlob* create(const char* name, CodeBuffer* cb); | |
| 209 | |
| 210 static void free(BufferBlob* buf); | |
| 211 | |
| 212 // Typing | |
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213 virtual bool is_buffer_blob() const { return true; } |
| 0 | 214 |
| 215 // GC/Verification support | |
| 216 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 217 bool is_alive() const { return true; } | |
| 218 | |
| 219 void verify(); | |
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220 void print_on(outputStream* st) const; |
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221 void print_value_on(outputStream* st) const; |
| 0 | 222 }; |
| 223 | |
| 224 | |
| 225 //---------------------------------------------------------------------------------------------------- | |
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226 // AdapterBlob: used to hold C2I/I2C adapters |
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227 |
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228 class AdapterBlob: public BufferBlob { |
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229 private: |
| 1663 | 230 AdapterBlob(int size, CodeBuffer* cb); |
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231 |
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232 public: |
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233 // Creation |
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234 static AdapterBlob* create(CodeBuffer* cb); |
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235 |
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236 // Typing |
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237 virtual bool is_adapter_blob() const { return true; } |
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238 }; |
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239 |
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240 |
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241 //---------------------------------------------------------------------------------------------------- |
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242 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters |
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243 |
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244 class MethodHandlesAdapterBlob: public BufferBlob { |
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245 private: |
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246 MethodHandlesAdapterBlob(int size) : BufferBlob("MethodHandles adapters", size) {} |
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247 MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {} |
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248 |
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249 public: |
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250 // Creation |
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251 static MethodHandlesAdapterBlob* create(int buffer_size); |
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252 |
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253 // Typing |
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254 virtual bool is_method_handles_adapter_blob() const { return true; } |
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255 }; |
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256 |
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257 |
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258 //---------------------------------------------------------------------------------------------------- |
| 0 | 259 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
| 260 | |
| 261 class RuntimeStub: public CodeBlob { | |
| 262 friend class VMStructs; | |
| 263 private: | |
| 264 bool _caller_must_gc_arguments; | |
| 265 | |
| 266 // Creation support | |
| 267 RuntimeStub( | |
| 268 const char* name, | |
| 269 CodeBuffer* cb, | |
| 270 int size, | |
| 271 int frame_complete, | |
| 272 int frame_size, | |
| 273 OopMapSet* oop_maps, | |
| 274 bool caller_must_gc_arguments | |
| 275 ); | |
| 276 | |
| 277 void* operator new(size_t s, unsigned size); | |
| 278 | |
| 279 public: | |
| 280 // Creation | |
| 281 static RuntimeStub* new_runtime_stub( | |
| 282 const char* stub_name, | |
| 283 CodeBuffer* cb, | |
| 284 int frame_complete, | |
| 285 int frame_size, | |
| 286 OopMapSet* oop_maps, | |
| 287 bool caller_must_gc_arguments | |
| 288 ); | |
| 289 | |
| 290 // Typing | |
| 291 bool is_runtime_stub() const { return true; } | |
| 292 | |
| 293 // GC support | |
| 294 bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } | |
| 295 | |
| 1748 | 296 address entry_point() { return code_begin(); } |
| 0 | 297 |
| 298 // GC/Verification support | |
| 299 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
| 300 bool is_alive() const { return true; } | |
| 301 | |
| 302 void verify(); | |
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303 void print_on(outputStream* st) const; |
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304 void print_value_on(outputStream* st) const; |
| 0 | 305 }; |
| 306 | |
| 307 | |
| 308 //---------------------------------------------------------------------------------------------------- | |
| 309 // Super-class for all blobs that exist in only one instance. Implements default behaviour. | |
| 310 | |
| 311 class SingletonBlob: public CodeBlob { | |
| 312 friend class VMStructs; | |
| 313 public: | |
| 314 SingletonBlob( | |
| 315 const char* name, | |
| 316 CodeBuffer* cb, | |
| 317 int header_size, | |
| 318 int size, | |
| 319 int frame_size, | |
| 320 OopMapSet* oop_maps | |
| 321 ) | |
| 322 : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) | |
| 1748 | 323 {}; |
| 0 | 324 |
| 1748 | 325 address entry_point() { return code_begin(); } |
| 0 | 326 |
| 1748 | 327 bool is_alive() const { return true; } |
| 328 | |
| 329 void verify(); // does nothing | |
| 330 void print_on(outputStream* st) const; | |
| 331 void print_value_on(outputStream* st) const; | |
| 0 | 332 }; |
| 333 | |
| 334 | |
| 335 //---------------------------------------------------------------------------------------------------- | |
| 336 // DeoptimizationBlob | |
| 337 | |
| 338 class DeoptimizationBlob: public SingletonBlob { | |
| 339 friend class VMStructs; | |
| 340 private: | |
| 341 int _unpack_offset; | |
| 342 int _unpack_with_exception; | |
| 343 int _unpack_with_reexecution; | |
| 344 | |
| 345 int _unpack_with_exception_in_tls; | |
| 346 | |
| 347 // Creation support | |
| 348 DeoptimizationBlob( | |
| 349 CodeBuffer* cb, | |
| 350 int size, | |
| 351 OopMapSet* oop_maps, | |
| 352 int unpack_offset, | |
| 353 int unpack_with_exception_offset, | |
| 354 int unpack_with_reexecution_offset, | |
| 355 int frame_size | |
| 356 ); | |
| 357 | |
| 358 void* operator new(size_t s, unsigned size); | |
| 359 | |
| 360 public: | |
| 361 // Creation | |
| 362 static DeoptimizationBlob* create( | |
| 363 CodeBuffer* cb, | |
| 364 OopMapSet* oop_maps, | |
| 365 int unpack_offset, | |
| 366 int unpack_with_exception_offset, | |
| 367 int unpack_with_reexecution_offset, | |
| 368 int frame_size | |
| 369 ); | |
| 370 | |
| 371 // Typing | |
| 372 bool is_deoptimization_stub() const { return true; } | |
| 373 const DeoptimizationBlob *as_deoptimization_stub() const { return this; } | |
| 374 bool exception_address_is_unpack_entry(address pc) const { | |
| 375 address unpack_pc = unpack(); | |
| 376 return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); | |
| 377 } | |
| 378 | |
| 379 | |
| 380 | |
| 381 | |
| 382 // GC for args | |
| 383 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } | |
| 384 | |
| 385 // Printing | |
|
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386 void print_value_on(outputStream* st) const; |
| 0 | 387 |
| 1748 | 388 address unpack() const { return code_begin() + _unpack_offset; } |
| 389 address unpack_with_exception() const { return code_begin() + _unpack_with_exception; } | |
| 390 address unpack_with_reexecution() const { return code_begin() + _unpack_with_reexecution; } | |
| 0 | 391 |
| 392 // Alternate entry point for C1 where the exception and issuing pc | |
| 393 // are in JavaThread::_exception_oop and JavaThread::_exception_pc | |
| 394 // instead of being in registers. This is needed because C1 doesn't | |
| 395 // model exception paths in a way that keeps these registers free so | |
| 396 // there may be live values in those registers during deopt. | |
| 397 void set_unpack_with_exception_in_tls_offset(int offset) { | |
| 398 _unpack_with_exception_in_tls = offset; | |
| 1748 | 399 assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); |
| 0 | 400 } |
| 1748 | 401 address unpack_with_exception_in_tls() const { return code_begin() + _unpack_with_exception_in_tls; } |
| 0 | 402 }; |
| 403 | |
| 404 | |
| 405 //---------------------------------------------------------------------------------------------------- | |
| 406 // UncommonTrapBlob (currently only used by Compiler 2) | |
| 407 | |
| 408 #ifdef COMPILER2 | |
| 409 | |
| 410 class UncommonTrapBlob: public SingletonBlob { | |
| 411 friend class VMStructs; | |
| 412 private: | |
| 413 // Creation support | |
| 414 UncommonTrapBlob( | |
| 415 CodeBuffer* cb, | |
| 416 int size, | |
| 417 OopMapSet* oop_maps, | |
| 418 int frame_size | |
| 419 ); | |
| 420 | |
| 421 void* operator new(size_t s, unsigned size); | |
| 422 | |
| 423 public: | |
| 424 // Creation | |
| 425 static UncommonTrapBlob* create( | |
| 426 CodeBuffer* cb, | |
| 427 OopMapSet* oop_maps, | |
| 428 int frame_size | |
| 429 ); | |
| 430 | |
| 431 // GC for args | |
| 432 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
| 433 | |
| 434 // Typing | |
| 435 bool is_uncommon_trap_stub() const { return true; } | |
| 436 }; | |
| 437 | |
| 438 | |
| 439 //---------------------------------------------------------------------------------------------------- | |
| 440 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) | |
| 441 | |
| 442 class ExceptionBlob: public SingletonBlob { | |
| 443 friend class VMStructs; | |
| 444 private: | |
| 445 // Creation support | |
| 446 ExceptionBlob( | |
| 447 CodeBuffer* cb, | |
| 448 int size, | |
| 449 OopMapSet* oop_maps, | |
| 450 int frame_size | |
| 451 ); | |
| 452 | |
| 453 void* operator new(size_t s, unsigned size); | |
| 454 | |
| 455 public: | |
| 456 // Creation | |
| 457 static ExceptionBlob* create( | |
| 458 CodeBuffer* cb, | |
| 459 OopMapSet* oop_maps, | |
| 460 int frame_size | |
| 461 ); | |
| 462 | |
| 463 // GC for args | |
| 464 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 465 | |
| 466 // Typing | |
| 467 bool is_exception_stub() const { return true; } | |
| 468 }; | |
| 469 #endif // COMPILER2 | |
| 470 | |
| 471 | |
| 472 //---------------------------------------------------------------------------------------------------- | |
| 473 // SafepointBlob: handles illegal_instruction exceptions during a safepoint | |
| 474 | |
| 475 class SafepointBlob: public SingletonBlob { | |
| 476 friend class VMStructs; | |
| 477 private: | |
| 478 // Creation support | |
| 479 SafepointBlob( | |
| 480 CodeBuffer* cb, | |
| 481 int size, | |
| 482 OopMapSet* oop_maps, | |
| 483 int frame_size | |
| 484 ); | |
| 485 | |
| 486 void* operator new(size_t s, unsigned size); | |
| 487 | |
| 488 public: | |
| 489 // Creation | |
| 490 static SafepointBlob* create( | |
| 491 CodeBuffer* cb, | |
| 492 OopMapSet* oop_maps, | |
| 493 int frame_size | |
| 494 ); | |
| 495 | |
| 496 // GC for args | |
| 497 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 498 | |
| 499 // Typing | |
| 500 bool is_safepoint_stub() const { return true; } | |
| 501 }; |