Fri, 08 Nov 2013 01:13:11 -0800
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
Reviewed-by: kvn, iveresov
duke@435 | 1 | /* |
coleenp@5614 | 2 | * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_CODE_CODEBLOB_HPP |
stefank@2314 | 26 | #define SHARE_VM_CODE_CODEBLOB_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "asm/codeBuffer.hpp" |
stefank@2314 | 29 | #include "compiler/oopMap.hpp" |
stefank@2314 | 30 | #include "runtime/frame.hpp" |
stefank@2314 | 31 | #include "runtime/handles.hpp" |
stefank@2314 | 32 | |
duke@435 | 33 | // CodeBlob - superclass for all entries in the CodeCache. |
duke@435 | 34 | // |
duke@435 | 35 | // Suptypes are: |
duke@435 | 36 | // nmethod : Compiled Java methods (include method that calls to native code) |
duke@435 | 37 | // RuntimeStub : Call to VM runtime methods |
duke@435 | 38 | // DeoptimizationBlob : Used for deoptimizatation |
duke@435 | 39 | // ExceptionBlob : Used for stack unrolling |
duke@435 | 40 | // SafepointBlob : Used to handle illegal instruction exceptions |
duke@435 | 41 | // |
duke@435 | 42 | // |
duke@435 | 43 | // Layout: |
duke@435 | 44 | // - header |
duke@435 | 45 | // - relocation |
twisti@2103 | 46 | // - content space |
twisti@2103 | 47 | // - instruction space |
duke@435 | 48 | // - data space |
duke@435 | 49 | class DeoptimizationBlob; |
duke@435 | 50 | |
duke@435 | 51 | class CodeBlob VALUE_OBJ_CLASS_SPEC { |
duke@435 | 52 | |
duke@435 | 53 | friend class VMStructs; |
duke@435 | 54 | |
duke@435 | 55 | private: |
duke@435 | 56 | const char* _name; |
duke@435 | 57 | int _size; // total size of CodeBlob in bytes |
duke@435 | 58 | int _header_size; // size of header (depends on subclass) |
duke@435 | 59 | int _relocation_size; // size of relocation |
twisti@2103 | 60 | int _content_offset; // offset to where content region begins (this includes consts, insts, stubs) |
twisti@2103 | 61 | int _code_offset; // offset to where instructions region begins (this includes insts, stubs) |
duke@435 | 62 | int _frame_complete_offset; // instruction offsets in [0.._frame_complete_offset) have |
duke@435 | 63 | // not finished setting up their frame. Beware of pc's in |
duke@435 | 64 | // that range. There is a similar range(s) on returns |
duke@435 | 65 | // which we don't detect. |
duke@435 | 66 | int _data_offset; // offset to where data region begins |
duke@435 | 67 | int _frame_size; // size of stack frame |
duke@435 | 68 | OopMapSet* _oop_maps; // OopMap for this CodeBlob |
roland@4767 | 69 | CodeStrings _strings; |
duke@435 | 70 | |
duke@435 | 71 | public: |
duke@435 | 72 | // Returns the space needed for CodeBlob |
duke@435 | 73 | static unsigned int allocation_size(CodeBuffer* cb, int header_size); |
duke@435 | 74 | |
duke@435 | 75 | // Creation |
duke@435 | 76 | // a) simple CodeBlob |
duke@435 | 77 | // frame_complete is the offset from the beginning of the instructions |
duke@435 | 78 | // to where the frame setup (from stackwalk viewpoint) is complete. |
duke@435 | 79 | CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); |
duke@435 | 80 | |
duke@435 | 81 | // b) full CodeBlob |
duke@435 | 82 | CodeBlob( |
duke@435 | 83 | const char* name, |
duke@435 | 84 | CodeBuffer* cb, |
duke@435 | 85 | int header_size, |
duke@435 | 86 | int size, |
duke@435 | 87 | int frame_complete, |
duke@435 | 88 | int frame_size, |
duke@435 | 89 | OopMapSet* oop_maps |
duke@435 | 90 | ); |
duke@435 | 91 | |
duke@435 | 92 | // Deletion |
duke@435 | 93 | void flush(); |
duke@435 | 94 | |
duke@435 | 95 | // Typing |
never@2895 | 96 | virtual bool is_buffer_blob() const { return false; } |
never@2895 | 97 | virtual bool is_nmethod() const { return false; } |
never@2895 | 98 | virtual bool is_runtime_stub() const { return false; } |
never@2895 | 99 | virtual bool is_deoptimization_stub() const { return false; } |
never@2895 | 100 | virtual bool is_uncommon_trap_stub() const { return false; } |
never@2895 | 101 | virtual bool is_exception_stub() const { return false; } |
twisti@1734 | 102 | virtual bool is_safepoint_stub() const { return false; } |
twisti@1734 | 103 | virtual bool is_adapter_blob() const { return false; } |
twisti@1734 | 104 | virtual bool is_method_handles_adapter_blob() const { return false; } |
duke@435 | 105 | |
duke@435 | 106 | virtual bool is_compiled_by_c2() const { return false; } |
duke@435 | 107 | virtual bool is_compiled_by_c1() const { return false; } |
duke@435 | 108 | |
twisti@1570 | 109 | // Casting |
twisti@1570 | 110 | nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
twisti@1570 | 111 | |
duke@435 | 112 | // Boundaries |
duke@435 | 113 | address header_begin() const { return (address) this; } |
duke@435 | 114 | address header_end() const { return ((address) this) + _header_size; }; |
duke@435 | 115 | relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; |
duke@435 | 116 | relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } |
twisti@2103 | 117 | address content_begin() const { return (address) header_begin() + _content_offset; } |
twisti@2103 | 118 | address content_end() const { return (address) header_begin() + _data_offset; } |
twisti@2103 | 119 | address code_begin() const { return (address) header_begin() + _code_offset; } |
twisti@2103 | 120 | address code_end() const { return (address) header_begin() + _data_offset; } |
duke@435 | 121 | address data_begin() const { return (address) header_begin() + _data_offset; } |
duke@435 | 122 | address data_end() const { return (address) header_begin() + _size; } |
duke@435 | 123 | |
duke@435 | 124 | // Offsets |
duke@435 | 125 | int relocation_offset() const { return _header_size; } |
twisti@2103 | 126 | int content_offset() const { return _content_offset; } |
twisti@2103 | 127 | int code_offset() const { return _code_offset; } |
duke@435 | 128 | int data_offset() const { return _data_offset; } |
duke@435 | 129 | |
duke@435 | 130 | // Sizes |
duke@435 | 131 | int size() const { return _size; } |
duke@435 | 132 | int header_size() const { return _header_size; } |
duke@435 | 133 | int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } |
twisti@2103 | 134 | int content_size() const { return content_end() - content_begin(); } |
twisti@2103 | 135 | int code_size() const { return code_end() - code_begin(); } |
twisti@2103 | 136 | int data_size() const { return data_end() - data_begin(); } |
duke@435 | 137 | |
duke@435 | 138 | // Containment |
twisti@2103 | 139 | bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } |
duke@435 | 140 | bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } |
twisti@2103 | 141 | bool content_contains(address addr) const { return content_begin() <= addr && addr < content_end(); } |
twisti@2103 | 142 | bool code_contains(address addr) const { return code_begin() <= addr && addr < code_end(); } |
twisti@2103 | 143 | bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } |
twisti@2103 | 144 | bool contains(address addr) const { return content_contains(addr); } |
twisti@2103 | 145 | bool is_frame_complete_at(address addr) const { return code_contains(addr) && |
twisti@2103 | 146 | addr >= code_begin() + _frame_complete_offset; } |
duke@435 | 147 | |
duke@435 | 148 | // CodeCache support: really only used by the nmethods, but in order to get |
duke@435 | 149 | // asserts and certain bookkeeping to work in the CodeCache they are defined |
duke@435 | 150 | // virtual here. |
duke@435 | 151 | virtual bool is_zombie() const { return false; } |
duke@435 | 152 | virtual bool is_locked_by_vm() const { return false; } |
duke@435 | 153 | |
duke@435 | 154 | virtual bool is_unloaded() const { return false; } |
duke@435 | 155 | virtual bool is_not_entrant() const { return false; } |
duke@435 | 156 | |
duke@435 | 157 | // GC support |
duke@435 | 158 | virtual bool is_alive() const = 0; |
duke@435 | 159 | |
duke@435 | 160 | // OopMap for frame |
duke@435 | 161 | OopMapSet* oop_maps() const { return _oop_maps; } |
duke@435 | 162 | void set_oop_maps(OopMapSet* p); |
duke@435 | 163 | OopMap* oop_map_for_return_address(address return_address); |
duke@435 | 164 | virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } |
duke@435 | 165 | |
duke@435 | 166 | // Frame support |
duke@435 | 167 | int frame_size() const { return _frame_size; } |
duke@435 | 168 | void set_frame_size(int size) { _frame_size = size; } |
duke@435 | 169 | |
duke@435 | 170 | // Returns true, if the next frame is responsible for GC'ing oops passed as arguments |
duke@435 | 171 | virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } |
duke@435 | 172 | |
duke@435 | 173 | // Naming |
duke@435 | 174 | const char* name() const { return _name; } |
duke@435 | 175 | void set_name(const char* name) { _name = name; } |
duke@435 | 176 | |
duke@435 | 177 | // Debugging |
duke@435 | 178 | virtual void verify(); |
bobv@2036 | 179 | void print() const { print_on(tty); } |
bobv@2036 | 180 | virtual void print_on(outputStream* st) const; |
bobv@2036 | 181 | virtual void print_value_on(outputStream* st) const; |
duke@435 | 182 | |
never@2895 | 183 | // Deal with Disassembler, VTune, Forte, JvmtiExport, MemoryService. |
never@2895 | 184 | static void trace_new_stub(CodeBlob* blob, const char* name1, const char* name2 = ""); |
never@2895 | 185 | |
duke@435 | 186 | // Print the comment associated with offset on stream, if there is one |
kvn@4107 | 187 | virtual void print_block_comment(outputStream* stream, address block_begin) const { |
twisti@2103 | 188 | intptr_t offset = (intptr_t)(block_begin - code_begin()); |
roland@4767 | 189 | _strings.print_block_comment(stream, offset); |
duke@435 | 190 | } |
duke@435 | 191 | |
duke@435 | 192 | // Transfer ownership of comments to this CodeBlob |
roland@4767 | 193 | void set_strings(CodeStrings& strings) { |
roland@4767 | 194 | _strings.assign(strings); |
duke@435 | 195 | } |
duke@435 | 196 | }; |
duke@435 | 197 | |
duke@435 | 198 | |
duke@435 | 199 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 200 | // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. |
duke@435 | 201 | |
duke@435 | 202 | class BufferBlob: public CodeBlob { |
duke@435 | 203 | friend class VMStructs; |
twisti@1734 | 204 | friend class AdapterBlob; |
twisti@1734 | 205 | friend class MethodHandlesAdapterBlob; |
twisti@1734 | 206 | |
duke@435 | 207 | private: |
duke@435 | 208 | // Creation support |
duke@435 | 209 | BufferBlob(const char* name, int size); |
duke@435 | 210 | BufferBlob(const char* name, int size, CodeBuffer* cb); |
duke@435 | 211 | |
anoll@5919 | 212 | void* operator new(size_t s, unsigned size, bool is_critical = false) throw(); |
duke@435 | 213 | |
duke@435 | 214 | public: |
duke@435 | 215 | // Creation |
duke@435 | 216 | static BufferBlob* create(const char* name, int buffer_size); |
duke@435 | 217 | static BufferBlob* create(const char* name, CodeBuffer* cb); |
duke@435 | 218 | |
duke@435 | 219 | static void free(BufferBlob* buf); |
duke@435 | 220 | |
duke@435 | 221 | // Typing |
twisti@1734 | 222 | virtual bool is_buffer_blob() const { return true; } |
duke@435 | 223 | |
duke@435 | 224 | // GC/Verification support |
duke@435 | 225 | void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 226 | bool is_alive() const { return true; } |
duke@435 | 227 | |
duke@435 | 228 | void verify(); |
bobv@2036 | 229 | void print_on(outputStream* st) const; |
bobv@2036 | 230 | void print_value_on(outputStream* st) const; |
duke@435 | 231 | }; |
duke@435 | 232 | |
duke@435 | 233 | |
duke@435 | 234 | //---------------------------------------------------------------------------------------------------- |
twisti@1734 | 235 | // AdapterBlob: used to hold C2I/I2C adapters |
twisti@1734 | 236 | |
twisti@1734 | 237 | class AdapterBlob: public BufferBlob { |
twisti@1734 | 238 | private: |
never@2018 | 239 | AdapterBlob(int size, CodeBuffer* cb); |
twisti@1734 | 240 | |
twisti@1734 | 241 | public: |
twisti@1734 | 242 | // Creation |
twisti@1734 | 243 | static AdapterBlob* create(CodeBuffer* cb); |
twisti@1734 | 244 | |
twisti@1734 | 245 | // Typing |
twisti@1734 | 246 | virtual bool is_adapter_blob() const { return true; } |
twisti@1734 | 247 | }; |
twisti@1734 | 248 | |
twisti@1734 | 249 | |
twisti@1734 | 250 | //---------------------------------------------------------------------------------------------------- |
twisti@1734 | 251 | // MethodHandlesAdapterBlob: used to hold MethodHandles adapters |
twisti@1734 | 252 | |
twisti@1734 | 253 | class MethodHandlesAdapterBlob: public BufferBlob { |
twisti@1734 | 254 | private: |
twisti@1734 | 255 | MethodHandlesAdapterBlob(int size) : BufferBlob("MethodHandles adapters", size) {} |
twisti@1734 | 256 | |
twisti@1734 | 257 | public: |
twisti@1734 | 258 | // Creation |
twisti@1734 | 259 | static MethodHandlesAdapterBlob* create(int buffer_size); |
twisti@1734 | 260 | |
twisti@1734 | 261 | // Typing |
twisti@1734 | 262 | virtual bool is_method_handles_adapter_blob() const { return true; } |
twisti@1734 | 263 | }; |
twisti@1734 | 264 | |
twisti@1734 | 265 | |
twisti@1734 | 266 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 267 | // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
duke@435 | 268 | |
duke@435 | 269 | class RuntimeStub: public CodeBlob { |
duke@435 | 270 | friend class VMStructs; |
duke@435 | 271 | private: |
duke@435 | 272 | bool _caller_must_gc_arguments; |
duke@435 | 273 | |
duke@435 | 274 | // Creation support |
duke@435 | 275 | RuntimeStub( |
duke@435 | 276 | const char* name, |
duke@435 | 277 | CodeBuffer* cb, |
duke@435 | 278 | int size, |
duke@435 | 279 | int frame_complete, |
duke@435 | 280 | int frame_size, |
duke@435 | 281 | OopMapSet* oop_maps, |
duke@435 | 282 | bool caller_must_gc_arguments |
duke@435 | 283 | ); |
duke@435 | 284 | |
coleenp@5614 | 285 | void* operator new(size_t s, unsigned size) throw(); |
duke@435 | 286 | |
duke@435 | 287 | public: |
duke@435 | 288 | // Creation |
duke@435 | 289 | static RuntimeStub* new_runtime_stub( |
duke@435 | 290 | const char* stub_name, |
duke@435 | 291 | CodeBuffer* cb, |
duke@435 | 292 | int frame_complete, |
duke@435 | 293 | int frame_size, |
duke@435 | 294 | OopMapSet* oop_maps, |
duke@435 | 295 | bool caller_must_gc_arguments |
duke@435 | 296 | ); |
duke@435 | 297 | |
duke@435 | 298 | // Typing |
duke@435 | 299 | bool is_runtime_stub() const { return true; } |
duke@435 | 300 | |
duke@435 | 301 | // GC support |
duke@435 | 302 | bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } |
duke@435 | 303 | |
twisti@2103 | 304 | address entry_point() { return code_begin(); } |
duke@435 | 305 | |
duke@435 | 306 | // GC/Verification support |
duke@435 | 307 | void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 308 | bool is_alive() const { return true; } |
duke@435 | 309 | |
duke@435 | 310 | void verify(); |
bobv@2036 | 311 | void print_on(outputStream* st) const; |
bobv@2036 | 312 | void print_value_on(outputStream* st) const; |
duke@435 | 313 | }; |
duke@435 | 314 | |
duke@435 | 315 | |
duke@435 | 316 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 317 | // Super-class for all blobs that exist in only one instance. Implements default behaviour. |
duke@435 | 318 | |
duke@435 | 319 | class SingletonBlob: public CodeBlob { |
duke@435 | 320 | friend class VMStructs; |
never@2895 | 321 | |
never@2895 | 322 | protected: |
coleenp@5614 | 323 | void* operator new(size_t s, unsigned size) throw(); |
never@2895 | 324 | |
never@2895 | 325 | public: |
duke@435 | 326 | SingletonBlob( |
duke@435 | 327 | const char* name, |
duke@435 | 328 | CodeBuffer* cb, |
duke@435 | 329 | int header_size, |
duke@435 | 330 | int size, |
duke@435 | 331 | int frame_size, |
duke@435 | 332 | OopMapSet* oop_maps |
duke@435 | 333 | ) |
duke@435 | 334 | : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) |
twisti@2103 | 335 | {}; |
duke@435 | 336 | |
twisti@2103 | 337 | address entry_point() { return code_begin(); } |
duke@435 | 338 | |
twisti@2103 | 339 | bool is_alive() const { return true; } |
twisti@2103 | 340 | |
twisti@2103 | 341 | void verify(); // does nothing |
twisti@2103 | 342 | void print_on(outputStream* st) const; |
twisti@2103 | 343 | void print_value_on(outputStream* st) const; |
duke@435 | 344 | }; |
duke@435 | 345 | |
duke@435 | 346 | |
duke@435 | 347 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 348 | // DeoptimizationBlob |
duke@435 | 349 | |
duke@435 | 350 | class DeoptimizationBlob: public SingletonBlob { |
duke@435 | 351 | friend class VMStructs; |
duke@435 | 352 | private: |
duke@435 | 353 | int _unpack_offset; |
duke@435 | 354 | int _unpack_with_exception; |
duke@435 | 355 | int _unpack_with_reexecution; |
duke@435 | 356 | |
duke@435 | 357 | int _unpack_with_exception_in_tls; |
duke@435 | 358 | |
duke@435 | 359 | // Creation support |
duke@435 | 360 | DeoptimizationBlob( |
duke@435 | 361 | CodeBuffer* cb, |
duke@435 | 362 | int size, |
duke@435 | 363 | OopMapSet* oop_maps, |
duke@435 | 364 | int unpack_offset, |
duke@435 | 365 | int unpack_with_exception_offset, |
duke@435 | 366 | int unpack_with_reexecution_offset, |
duke@435 | 367 | int frame_size |
duke@435 | 368 | ); |
duke@435 | 369 | |
duke@435 | 370 | public: |
duke@435 | 371 | // Creation |
duke@435 | 372 | static DeoptimizationBlob* create( |
duke@435 | 373 | CodeBuffer* cb, |
duke@435 | 374 | OopMapSet* oop_maps, |
duke@435 | 375 | int unpack_offset, |
duke@435 | 376 | int unpack_with_exception_offset, |
duke@435 | 377 | int unpack_with_reexecution_offset, |
duke@435 | 378 | int frame_size |
duke@435 | 379 | ); |
duke@435 | 380 | |
duke@435 | 381 | // Typing |
duke@435 | 382 | bool is_deoptimization_stub() const { return true; } |
duke@435 | 383 | bool exception_address_is_unpack_entry(address pc) const { |
duke@435 | 384 | address unpack_pc = unpack(); |
duke@435 | 385 | return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); |
duke@435 | 386 | } |
duke@435 | 387 | |
duke@435 | 388 | |
duke@435 | 389 | |
duke@435 | 390 | |
duke@435 | 391 | // GC for args |
duke@435 | 392 | void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } |
duke@435 | 393 | |
duke@435 | 394 | // Printing |
bobv@2036 | 395 | void print_value_on(outputStream* st) const; |
duke@435 | 396 | |
twisti@2103 | 397 | address unpack() const { return code_begin() + _unpack_offset; } |
twisti@2103 | 398 | address unpack_with_exception() const { return code_begin() + _unpack_with_exception; } |
twisti@2103 | 399 | address unpack_with_reexecution() const { return code_begin() + _unpack_with_reexecution; } |
duke@435 | 400 | |
duke@435 | 401 | // Alternate entry point for C1 where the exception and issuing pc |
duke@435 | 402 | // are in JavaThread::_exception_oop and JavaThread::_exception_pc |
duke@435 | 403 | // instead of being in registers. This is needed because C1 doesn't |
duke@435 | 404 | // model exception paths in a way that keeps these registers free so |
duke@435 | 405 | // there may be live values in those registers during deopt. |
duke@435 | 406 | void set_unpack_with_exception_in_tls_offset(int offset) { |
duke@435 | 407 | _unpack_with_exception_in_tls = offset; |
twisti@2103 | 408 | assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); |
duke@435 | 409 | } |
twisti@2103 | 410 | address unpack_with_exception_in_tls() const { return code_begin() + _unpack_with_exception_in_tls; } |
duke@435 | 411 | }; |
duke@435 | 412 | |
duke@435 | 413 | |
duke@435 | 414 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 415 | // UncommonTrapBlob (currently only used by Compiler 2) |
duke@435 | 416 | |
duke@435 | 417 | #ifdef COMPILER2 |
duke@435 | 418 | |
duke@435 | 419 | class UncommonTrapBlob: public SingletonBlob { |
duke@435 | 420 | friend class VMStructs; |
duke@435 | 421 | private: |
duke@435 | 422 | // Creation support |
duke@435 | 423 | UncommonTrapBlob( |
duke@435 | 424 | CodeBuffer* cb, |
duke@435 | 425 | int size, |
duke@435 | 426 | OopMapSet* oop_maps, |
duke@435 | 427 | int frame_size |
duke@435 | 428 | ); |
duke@435 | 429 | |
duke@435 | 430 | public: |
duke@435 | 431 | // Creation |
duke@435 | 432 | static UncommonTrapBlob* create( |
duke@435 | 433 | CodeBuffer* cb, |
duke@435 | 434 | OopMapSet* oop_maps, |
duke@435 | 435 | int frame_size |
duke@435 | 436 | ); |
duke@435 | 437 | |
duke@435 | 438 | // GC for args |
duke@435 | 439 | void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 440 | |
duke@435 | 441 | // Typing |
duke@435 | 442 | bool is_uncommon_trap_stub() const { return true; } |
duke@435 | 443 | }; |
duke@435 | 444 | |
duke@435 | 445 | |
duke@435 | 446 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 447 | // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) |
duke@435 | 448 | |
duke@435 | 449 | class ExceptionBlob: public SingletonBlob { |
duke@435 | 450 | friend class VMStructs; |
duke@435 | 451 | private: |
duke@435 | 452 | // Creation support |
duke@435 | 453 | ExceptionBlob( |
duke@435 | 454 | CodeBuffer* cb, |
duke@435 | 455 | int size, |
duke@435 | 456 | OopMapSet* oop_maps, |
duke@435 | 457 | int frame_size |
duke@435 | 458 | ); |
duke@435 | 459 | |
duke@435 | 460 | public: |
duke@435 | 461 | // Creation |
duke@435 | 462 | static ExceptionBlob* create( |
duke@435 | 463 | CodeBuffer* cb, |
duke@435 | 464 | OopMapSet* oop_maps, |
duke@435 | 465 | int frame_size |
duke@435 | 466 | ); |
duke@435 | 467 | |
duke@435 | 468 | // GC for args |
duke@435 | 469 | void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 470 | |
duke@435 | 471 | // Typing |
duke@435 | 472 | bool is_exception_stub() const { return true; } |
duke@435 | 473 | }; |
duke@435 | 474 | #endif // COMPILER2 |
duke@435 | 475 | |
duke@435 | 476 | |
duke@435 | 477 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 478 | // SafepointBlob: handles illegal_instruction exceptions during a safepoint |
duke@435 | 479 | |
duke@435 | 480 | class SafepointBlob: public SingletonBlob { |
duke@435 | 481 | friend class VMStructs; |
duke@435 | 482 | private: |
duke@435 | 483 | // Creation support |
duke@435 | 484 | SafepointBlob( |
duke@435 | 485 | CodeBuffer* cb, |
duke@435 | 486 | int size, |
duke@435 | 487 | OopMapSet* oop_maps, |
duke@435 | 488 | int frame_size |
duke@435 | 489 | ); |
duke@435 | 490 | |
duke@435 | 491 | public: |
duke@435 | 492 | // Creation |
duke@435 | 493 | static SafepointBlob* create( |
duke@435 | 494 | CodeBuffer* cb, |
duke@435 | 495 | OopMapSet* oop_maps, |
duke@435 | 496 | int frame_size |
duke@435 | 497 | ); |
duke@435 | 498 | |
duke@435 | 499 | // GC for args |
duke@435 | 500 | void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 501 | |
duke@435 | 502 | // Typing |
duke@435 | 503 | bool is_safepoint_stub() const { return true; } |
duke@435 | 504 | }; |
stefank@2314 | 505 | |
stefank@2314 | 506 | #endif // SHARE_VM_CODE_CODEBLOB_HPP |