Mercurial > hg > truffle
annotate src/share/vm/code/codeBlob.hpp @ 12146:9758d9f36299
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Summary: declare all user-defined operator new()s within Hotspot code with the empty throw() exception specification
Reviewed-by: coleenp, twisti, dholmes, hseigel, dcubed, kvn, ccheung
Contributed-by: lois.foltan@oracle.com
| author | coleenp |
|---|---|
| date | Thu, 29 Aug 2013 18:56:29 -0400 |
| parents | a5de0cc2f91c |
| children | cefad50507d8 469216acdb28 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2013, 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 | |
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69 CodeStrings _strings; |
| 0 | 70 |
| 71 public: | |
| 72 // Returns the space needed for CodeBlob | |
| 73 static unsigned int allocation_size(CodeBuffer* cb, int header_size); | |
| 74 | |
| 75 // Creation | |
| 76 // a) simple CodeBlob | |
| 77 // frame_complete is the offset from the beginning of the instructions | |
| 78 // to where the frame setup (from stackwalk viewpoint) is complete. | |
| 79 CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); | |
| 80 | |
| 81 // b) full CodeBlob | |
| 82 CodeBlob( | |
| 83 const char* name, | |
| 84 CodeBuffer* cb, | |
| 85 int header_size, | |
| 86 int size, | |
| 87 int frame_complete, | |
| 88 int frame_size, | |
| 89 OopMapSet* oop_maps | |
| 90 ); | |
| 91 | |
| 92 // Deletion | |
| 93 void flush(); | |
| 94 | |
| 95 // Typing | |
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96 virtual bool is_buffer_blob() const { return false; } |
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97 virtual bool is_nmethod() const { return false; } |
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98 virtual bool is_runtime_stub() const { return false; } |
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99 virtual bool is_deoptimization_stub() const { return false; } |
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100 virtual bool is_uncommon_trap_stub() const { return false; } |
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101 virtual bool is_exception_stub() const { return false; } |
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102 virtual bool is_safepoint_stub() const { return false; } |
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103 virtual bool is_adapter_blob() const { return false; } |
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104 virtual bool is_method_handles_adapter_blob() const { return false; } |
| 0 | 105 |
| 106 virtual bool is_compiled_by_c2() const { return false; } | |
| 107 virtual bool is_compiled_by_c1() const { return false; } | |
| 108 | |
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109 // Casting |
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110 nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
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111 |
| 0 | 112 // Boundaries |
| 113 address header_begin() const { return (address) this; } | |
| 114 address header_end() const { return ((address) this) + _header_size; }; | |
| 115 relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; | |
| 116 relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } | |
| 1748 | 117 address content_begin() const { return (address) header_begin() + _content_offset; } |
| 118 address content_end() const { return (address) header_begin() + _data_offset; } | |
| 119 address code_begin() const { return (address) header_begin() + _code_offset; } | |
| 120 address code_end() const { return (address) header_begin() + _data_offset; } | |
| 0 | 121 address data_begin() const { return (address) header_begin() + _data_offset; } |
| 122 address data_end() const { return (address) header_begin() + _size; } | |
| 123 | |
| 124 // Offsets | |
| 125 int relocation_offset() const { return _header_size; } | |
| 1748 | 126 int content_offset() const { return _content_offset; } |
| 127 int code_offset() const { return _code_offset; } | |
| 0 | 128 int data_offset() const { return _data_offset; } |
| 129 | |
| 130 // Sizes | |
| 131 int size() const { return _size; } | |
| 132 int header_size() const { return _header_size; } | |
| 133 int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } | |
| 1748 | 134 int content_size() const { return content_end() - content_begin(); } |
| 135 int code_size() const { return code_end() - code_begin(); } | |
| 136 int data_size() const { return data_end() - data_begin(); } | |
| 0 | 137 |
| 138 // Containment | |
| 1748 | 139 bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } |
| 0 | 140 bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } |
| 1748 | 141 bool content_contains(address addr) const { return content_begin() <= addr && addr < content_end(); } |
| 142 bool code_contains(address addr) const { return code_begin() <= addr && addr < code_end(); } | |
| 143 bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } | |
| 144 bool contains(address addr) const { return content_contains(addr); } | |
| 145 bool is_frame_complete_at(address addr) const { return code_contains(addr) && | |
| 146 addr >= code_begin() + _frame_complete_offset; } | |
| 0 | 147 |
| 148 // CodeCache support: really only used by the nmethods, but in order to get | |
| 149 // asserts and certain bookkeeping to work in the CodeCache they are defined | |
| 150 // virtual here. | |
| 151 virtual bool is_zombie() const { return false; } | |
| 152 virtual bool is_locked_by_vm() const { return false; } | |
| 153 | |
| 154 virtual bool is_unloaded() const { return false; } | |
| 155 virtual bool is_not_entrant() const { return false; } | |
| 156 | |
| 157 // GC support | |
| 158 virtual bool is_alive() const = 0; | |
| 159 | |
| 160 // OopMap for frame | |
| 161 OopMapSet* oop_maps() const { return _oop_maps; } | |
| 162 void set_oop_maps(OopMapSet* p); | |
| 163 OopMap* oop_map_for_return_address(address return_address); | |
| 164 virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } | |
| 165 | |
| 166 // Frame support | |
| 167 int frame_size() const { return _frame_size; } | |
| 168 void set_frame_size(int size) { _frame_size = size; } | |
| 169 | |
| 170 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
| 171 virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } | |
| 172 | |
| 173 // Naming | |
| 174 const char* name() const { return _name; } | |
| 175 void set_name(const char* name) { _name = name; } | |
| 176 | |
| 177 // Debugging | |
| 178 virtual void verify(); | |
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179 void print() const { print_on(tty); } |
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180 virtual void print_on(outputStream* st) const; |
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181 virtual void print_value_on(outputStream* st) const; |
| 0 | 182 |
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183 // Deal with Disassembler, VTune, Forte, JvmtiExport, MemoryService. |
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184 static void trace_new_stub(CodeBlob* blob, const char* name1, const char* name2 = ""); |
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185 |
| 0 | 186 // Print the comment associated with offset on stream, if there is one |
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187 virtual void print_block_comment(outputStream* stream, address block_begin) const { |
| 1748 | 188 intptr_t offset = (intptr_t)(block_begin - code_begin()); |
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189 _strings.print_block_comment(stream, offset); |
| 0 | 190 } |
| 191 | |
| 192 // Transfer ownership of comments to this CodeBlob | |
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193 void set_strings(CodeStrings& strings) { |
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194 _strings.assign(strings); |
| 0 | 195 } |
| 196 }; | |
| 197 | |
| 198 | |
| 199 //---------------------------------------------------------------------------------------------------- | |
| 200 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. | |
| 201 | |
| 202 class BufferBlob: public CodeBlob { | |
| 203 friend class VMStructs; | |
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204 friend class AdapterBlob; |
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205 friend class MethodHandlesAdapterBlob; |
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206 |
| 0 | 207 private: |
| 208 // Creation support | |
| 209 BufferBlob(const char* name, int size); | |
| 210 BufferBlob(const char* name, int size, CodeBuffer* cb); | |
| 211 | |
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212 void* operator new(size_t s, unsigned size) throw(); |
| 0 | 213 |
| 214 public: | |
| 215 // Creation | |
| 216 static BufferBlob* create(const char* name, int buffer_size); | |
| 217 static BufferBlob* create(const char* name, CodeBuffer* cb); | |
| 218 | |
| 219 static void free(BufferBlob* buf); | |
| 220 | |
| 221 // Typing | |
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222 virtual bool is_buffer_blob() const { return true; } |
| 0 | 223 |
| 224 // GC/Verification support | |
| 225 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 226 bool is_alive() const { return true; } | |
| 227 | |
| 228 void verify(); | |
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229 void print_on(outputStream* st) const; |
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230 void print_value_on(outputStream* st) const; |
| 0 | 231 }; |
| 232 | |
| 233 | |
| 234 //---------------------------------------------------------------------------------------------------- | |
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235 // AdapterBlob: used to hold C2I/I2C adapters |
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236 |
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237 class AdapterBlob: public BufferBlob { |
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238 private: |
| 1663 | 239 AdapterBlob(int size, CodeBuffer* cb); |
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240 |
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241 public: |
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242 // Creation |
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243 static AdapterBlob* create(CodeBuffer* cb); |
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244 |
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245 // Typing |
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246 virtual bool is_adapter_blob() const { return true; } |
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247 }; |
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248 |
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249 |
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250 //---------------------------------------------------------------------------------------------------- |
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251 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters |
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252 |
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253 class MethodHandlesAdapterBlob: public BufferBlob { |
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254 private: |
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255 MethodHandlesAdapterBlob(int size) : BufferBlob("MethodHandles adapters", size) {} |
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256 MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {} |
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257 |
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258 public: |
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259 // Creation |
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260 static MethodHandlesAdapterBlob* create(int buffer_size); |
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261 |
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262 // Typing |
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263 virtual bool is_method_handles_adapter_blob() const { return true; } |
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264 }; |
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265 |
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266 |
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267 //---------------------------------------------------------------------------------------------------- |
| 0 | 268 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
| 269 | |
| 270 class RuntimeStub: public CodeBlob { | |
| 271 friend class VMStructs; | |
| 272 private: | |
| 273 bool _caller_must_gc_arguments; | |
| 274 | |
| 275 // Creation support | |
| 276 RuntimeStub( | |
| 277 const char* name, | |
| 278 CodeBuffer* cb, | |
| 279 int size, | |
| 280 int frame_complete, | |
| 281 int frame_size, | |
| 282 OopMapSet* oop_maps, | |
| 283 bool caller_must_gc_arguments | |
| 284 ); | |
| 285 | |
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286 void* operator new(size_t s, unsigned size) throw(); |
| 0 | 287 |
| 288 public: | |
| 289 // Creation | |
| 290 static RuntimeStub* new_runtime_stub( | |
| 291 const char* stub_name, | |
| 292 CodeBuffer* cb, | |
| 293 int frame_complete, | |
| 294 int frame_size, | |
| 295 OopMapSet* oop_maps, | |
| 296 bool caller_must_gc_arguments | |
| 297 ); | |
| 298 | |
| 299 // Typing | |
| 300 bool is_runtime_stub() const { return true; } | |
| 301 | |
| 302 // GC support | |
| 303 bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } | |
| 304 | |
| 1748 | 305 address entry_point() { return code_begin(); } |
| 0 | 306 |
| 307 // GC/Verification support | |
| 308 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
| 309 bool is_alive() const { return true; } | |
| 310 | |
| 311 void verify(); | |
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312 void print_on(outputStream* st) const; |
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313 void print_value_on(outputStream* st) const; |
| 0 | 314 }; |
| 315 | |
| 316 | |
| 317 //---------------------------------------------------------------------------------------------------- | |
| 318 // Super-class for all blobs that exist in only one instance. Implements default behaviour. | |
| 319 | |
| 320 class SingletonBlob: public CodeBlob { | |
| 321 friend class VMStructs; | |
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322 |
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323 protected: |
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324 void* operator new(size_t s, unsigned size) throw(); |
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325 |
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326 public: |
| 0 | 327 SingletonBlob( |
| 328 const char* name, | |
| 329 CodeBuffer* cb, | |
| 330 int header_size, | |
| 331 int size, | |
| 332 int frame_size, | |
| 333 OopMapSet* oop_maps | |
| 334 ) | |
| 335 : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) | |
| 1748 | 336 {}; |
| 0 | 337 |
| 1748 | 338 address entry_point() { return code_begin(); } |
| 0 | 339 |
| 1748 | 340 bool is_alive() const { return true; } |
| 341 | |
| 342 void verify(); // does nothing | |
| 343 void print_on(outputStream* st) const; | |
| 344 void print_value_on(outputStream* st) const; | |
| 0 | 345 }; |
| 346 | |
| 347 | |
| 348 //---------------------------------------------------------------------------------------------------- | |
| 349 // DeoptimizationBlob | |
| 350 | |
| 351 class DeoptimizationBlob: public SingletonBlob { | |
| 352 friend class VMStructs; | |
| 353 private: | |
| 354 int _unpack_offset; | |
| 355 int _unpack_with_exception; | |
| 356 int _unpack_with_reexecution; | |
| 357 | |
| 358 int _unpack_with_exception_in_tls; | |
| 359 | |
| 360 // Creation support | |
| 361 DeoptimizationBlob( | |
| 362 CodeBuffer* cb, | |
| 363 int size, | |
| 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 public: | |
| 372 // Creation | |
| 373 static DeoptimizationBlob* create( | |
| 374 CodeBuffer* cb, | |
| 375 OopMapSet* oop_maps, | |
| 376 int unpack_offset, | |
| 377 int unpack_with_exception_offset, | |
| 378 int unpack_with_reexecution_offset, | |
| 379 int frame_size | |
| 380 ); | |
| 381 | |
| 382 // Typing | |
| 383 bool is_deoptimization_stub() const { return true; } | |
| 384 bool exception_address_is_unpack_entry(address pc) const { | |
| 385 address unpack_pc = unpack(); | |
| 386 return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); | |
| 387 } | |
| 388 | |
| 389 | |
| 390 | |
| 391 | |
| 392 // GC for args | |
| 393 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } | |
| 394 | |
| 395 // Printing | |
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396 void print_value_on(outputStream* st) const; |
| 0 | 397 |
| 1748 | 398 address unpack() const { return code_begin() + _unpack_offset; } |
| 399 address unpack_with_exception() const { return code_begin() + _unpack_with_exception; } | |
| 400 address unpack_with_reexecution() const { return code_begin() + _unpack_with_reexecution; } | |
| 0 | 401 |
| 402 // Alternate entry point for C1 where the exception and issuing pc | |
| 403 // are in JavaThread::_exception_oop and JavaThread::_exception_pc | |
| 404 // instead of being in registers. This is needed because C1 doesn't | |
| 405 // model exception paths in a way that keeps these registers free so | |
| 406 // there may be live values in those registers during deopt. | |
| 407 void set_unpack_with_exception_in_tls_offset(int offset) { | |
| 408 _unpack_with_exception_in_tls = offset; | |
| 1748 | 409 assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); |
| 0 | 410 } |
| 1748 | 411 address unpack_with_exception_in_tls() const { return code_begin() + _unpack_with_exception_in_tls; } |
| 0 | 412 }; |
| 413 | |
| 414 | |
| 415 //---------------------------------------------------------------------------------------------------- | |
| 416 // UncommonTrapBlob (currently only used by Compiler 2) | |
| 417 | |
| 418 #ifdef COMPILER2 | |
| 419 | |
| 420 class UncommonTrapBlob: public SingletonBlob { | |
| 421 friend class VMStructs; | |
| 422 private: | |
| 423 // Creation support | |
| 424 UncommonTrapBlob( | |
| 425 CodeBuffer* cb, | |
| 426 int size, | |
| 427 OopMapSet* oop_maps, | |
| 428 int frame_size | |
| 429 ); | |
| 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 public: | |
| 462 // Creation | |
| 463 static ExceptionBlob* create( | |
| 464 CodeBuffer* cb, | |
| 465 OopMapSet* oop_maps, | |
| 466 int frame_size | |
| 467 ); | |
| 468 | |
| 469 // GC for args | |
| 470 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 471 | |
| 472 // Typing | |
| 473 bool is_exception_stub() const { return true; } | |
| 474 }; | |
| 475 #endif // COMPILER2 | |
| 476 | |
| 477 | |
| 478 //---------------------------------------------------------------------------------------------------- | |
| 479 // SafepointBlob: handles illegal_instruction exceptions during a safepoint | |
| 480 | |
| 481 class SafepointBlob: public SingletonBlob { | |
| 482 friend class VMStructs; | |
| 483 private: | |
| 484 // Creation support | |
| 485 SafepointBlob( | |
| 486 CodeBuffer* cb, | |
| 487 int size, | |
| 488 OopMapSet* oop_maps, | |
| 489 int frame_size | |
| 490 ); | |
| 491 | |
| 492 public: | |
| 493 // Creation | |
| 494 static SafepointBlob* create( | |
| 495 CodeBuffer* cb, | |
| 496 OopMapSet* oop_maps, | |
| 497 int frame_size | |
| 498 ); | |
| 499 | |
| 500 // GC for args | |
| 501 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 502 | |
| 503 // Typing | |
| 504 bool is_safepoint_stub() const { return true; } | |
| 505 }; | |
| 1972 | 506 |
| 507 #endif // SHARE_VM_CODE_CODEBLOB_HPP |