Thu, 02 Apr 2009 18:17:03 -0400
Merge
duke@435 | 1 | /* |
xdono@631 | 2 | * Copyright 1997-2008 Sun Microsystems, Inc. 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 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | typedef class BytecodeInterpreter* interpreterState; |
duke@435 | 26 | |
duke@435 | 27 | class CodeBlob; |
duke@435 | 28 | |
duke@435 | 29 | |
duke@435 | 30 | // A frame represents a physical stack frame (an activation). Frames |
duke@435 | 31 | // can be C or Java frames, and the Java frames can be interpreted or |
duke@435 | 32 | // compiled. In contrast, vframes represent source-level activations, |
duke@435 | 33 | // so that one physical frame can correspond to multiple source level |
duke@435 | 34 | // frames because of inlining. |
duke@435 | 35 | |
duke@435 | 36 | class frame VALUE_OBJ_CLASS_SPEC { |
duke@435 | 37 | private: |
duke@435 | 38 | // Instance variables: |
duke@435 | 39 | intptr_t* _sp; // stack pointer (from Thread::last_Java_sp) |
duke@435 | 40 | address _pc; // program counter (the next instruction after the call) |
duke@435 | 41 | |
duke@435 | 42 | CodeBlob* _cb; // CodeBlob that "owns" pc |
duke@435 | 43 | enum deopt_state { |
duke@435 | 44 | not_deoptimized, |
duke@435 | 45 | is_deoptimized, |
duke@435 | 46 | unknown |
duke@435 | 47 | }; |
duke@435 | 48 | |
duke@435 | 49 | deopt_state _deopt_state; |
duke@435 | 50 | |
duke@435 | 51 | public: |
duke@435 | 52 | // Constructors |
duke@435 | 53 | frame(); |
duke@435 | 54 | |
duke@435 | 55 | // Accessors |
duke@435 | 56 | |
duke@435 | 57 | // pc: Returns the pc at which this frame will continue normally. |
duke@435 | 58 | // It must point at the beginning of the next instruction to execute. |
duke@435 | 59 | address pc() const { return _pc; } |
duke@435 | 60 | |
duke@435 | 61 | // This returns the pc that if you were in the debugger you'd see. Not |
duke@435 | 62 | // the idealized value in the frame object. This undoes the magic conversion |
duke@435 | 63 | // that happens for deoptimized frames. In addition it makes the value the |
duke@435 | 64 | // hardware would want to see in the native frame. The only user (at this point) |
duke@435 | 65 | // is deoptimization. It likely no one else should ever use it. |
duke@435 | 66 | address raw_pc() const; |
duke@435 | 67 | |
duke@435 | 68 | void set_pc( address newpc ); |
duke@435 | 69 | |
duke@435 | 70 | intptr_t* sp() const { return _sp; } |
duke@435 | 71 | void set_sp( intptr_t* newsp ) { _sp = newsp; } |
duke@435 | 72 | |
duke@435 | 73 | |
duke@435 | 74 | CodeBlob* cb() const { return _cb; } |
duke@435 | 75 | |
duke@435 | 76 | // patching operations |
duke@435 | 77 | void patch_pc(Thread* thread, address pc); |
duke@435 | 78 | |
duke@435 | 79 | // Every frame needs to return a unique id which distinguishes it from all other frames. |
duke@435 | 80 | // For sparc and ia32 use sp. ia64 can have memory frames that are empty so multiple frames |
duke@435 | 81 | // will have identical sp values. For ia64 the bsp (fp) value will serve. No real frame |
duke@435 | 82 | // should have an id() of NULL so it is a distinguishing value for an unmatchable frame. |
duke@435 | 83 | // We also have relationals which allow comparing a frame to anoth frame's id() allow |
duke@435 | 84 | // us to distinguish younger (more recent activation) from older (less recent activations) |
duke@435 | 85 | // A NULL id is only valid when comparing for equality. |
duke@435 | 86 | |
duke@435 | 87 | intptr_t* id(void) const; |
duke@435 | 88 | bool is_younger(intptr_t* id) const; |
duke@435 | 89 | bool is_older(intptr_t* id) const; |
duke@435 | 90 | |
duke@435 | 91 | // testers |
duke@435 | 92 | |
duke@435 | 93 | // Compares for strict equality. Rarely used or needed. |
duke@435 | 94 | // It can return a different result than f1.id() == f2.id() |
duke@435 | 95 | bool equal(frame other) const; |
duke@435 | 96 | |
duke@435 | 97 | // type testers |
duke@435 | 98 | bool is_interpreted_frame() const; |
duke@435 | 99 | bool is_java_frame() const; |
duke@435 | 100 | bool is_entry_frame() const; // Java frame called from C? |
duke@435 | 101 | bool is_native_frame() const; |
duke@435 | 102 | bool is_runtime_frame() const; |
duke@435 | 103 | bool is_compiled_frame() const; |
duke@435 | 104 | bool is_safepoint_blob_frame() const; |
duke@435 | 105 | bool is_deoptimized_frame() const; |
duke@435 | 106 | |
duke@435 | 107 | // testers |
duke@435 | 108 | bool is_first_frame() const; // oldest frame? (has no sender) |
duke@435 | 109 | bool is_first_java_frame() const; // same for Java frame |
duke@435 | 110 | |
sgoldman@542 | 111 | bool is_interpreted_frame_valid(JavaThread* thread) const; // performs sanity checks on interpreted frames. |
duke@435 | 112 | |
duke@435 | 113 | // tells whether this frame is marked for deoptimization |
duke@435 | 114 | bool should_be_deoptimized() const; |
duke@435 | 115 | |
duke@435 | 116 | // tells whether this frame can be deoptimized |
duke@435 | 117 | bool can_be_deoptimized() const; |
duke@435 | 118 | |
duke@435 | 119 | // returns the frame size in stack slots |
duke@435 | 120 | int frame_size() const; |
duke@435 | 121 | |
duke@435 | 122 | // returns the sending frame |
duke@435 | 123 | frame sender(RegisterMap* map) const; |
duke@435 | 124 | |
duke@435 | 125 | // for Profiling - acting on another frame. walks sender frames |
duke@435 | 126 | // if valid. |
duke@435 | 127 | frame profile_find_Java_sender_frame(JavaThread *thread); |
duke@435 | 128 | bool safe_for_sender(JavaThread *thread); |
duke@435 | 129 | |
duke@435 | 130 | // returns the sender, but skips conversion frames |
duke@435 | 131 | frame real_sender(RegisterMap* map) const; |
duke@435 | 132 | |
duke@435 | 133 | // returns the the sending Java frame, skipping any intermediate C frames |
duke@435 | 134 | // NB: receiver must not be first frame |
duke@435 | 135 | frame java_sender() const; |
duke@435 | 136 | |
duke@435 | 137 | private: |
duke@435 | 138 | // Helper methods for better factored code in frame::sender |
duke@435 | 139 | frame sender_for_compiled_frame(RegisterMap* map) const; |
duke@435 | 140 | frame sender_for_entry_frame(RegisterMap* map) const; |
duke@435 | 141 | frame sender_for_interpreter_frame(RegisterMap* map) const; |
duke@435 | 142 | frame sender_for_native_frame(RegisterMap* map) const; |
duke@435 | 143 | |
duke@435 | 144 | // All frames: |
duke@435 | 145 | |
duke@435 | 146 | // A low-level interface for vframes: |
duke@435 | 147 | |
duke@435 | 148 | public: |
duke@435 | 149 | |
duke@435 | 150 | intptr_t* addr_at(int index) const { return &fp()[index]; } |
duke@435 | 151 | intptr_t at(int index) const { return *addr_at(index); } |
duke@435 | 152 | |
duke@435 | 153 | // accessors for locals |
duke@435 | 154 | oop obj_at(int offset) const { return *obj_at_addr(offset); } |
duke@435 | 155 | void obj_at_put(int offset, oop value) { *obj_at_addr(offset) = value; } |
duke@435 | 156 | |
duke@435 | 157 | jint int_at(int offset) const { return *int_at_addr(offset); } |
duke@435 | 158 | void int_at_put(int offset, jint value) { *int_at_addr(offset) = value; } |
duke@435 | 159 | |
duke@435 | 160 | oop* obj_at_addr(int offset) const { return (oop*) addr_at(offset); } |
duke@435 | 161 | |
duke@435 | 162 | oop* adjusted_obj_at_addr(methodOop method, int index) { return obj_at_addr(adjust_offset(method, index)); } |
duke@435 | 163 | |
duke@435 | 164 | private: |
duke@435 | 165 | jint* int_at_addr(int offset) const { return (jint*) addr_at(offset); } |
duke@435 | 166 | |
duke@435 | 167 | public: |
duke@435 | 168 | // Link (i.e., the pointer to the previous frame) |
duke@435 | 169 | intptr_t* link() const; |
duke@435 | 170 | void set_link(intptr_t* addr); |
duke@435 | 171 | |
duke@435 | 172 | // Return address |
duke@435 | 173 | address sender_pc() const; |
duke@435 | 174 | |
duke@435 | 175 | // Support for deoptimization |
duke@435 | 176 | void deoptimize(JavaThread* thread, bool thread_is_known_safe = false); |
duke@435 | 177 | |
duke@435 | 178 | // The frame's original SP, before any extension by an interpreted callee; |
duke@435 | 179 | // used for packing debug info into vframeArray objects and vframeArray lookup. |
duke@435 | 180 | intptr_t* unextended_sp() const; |
duke@435 | 181 | |
duke@435 | 182 | // returns the stack pointer of the calling frame |
duke@435 | 183 | intptr_t* sender_sp() const; |
duke@435 | 184 | |
duke@435 | 185 | |
duke@435 | 186 | // Interpreter frames: |
duke@435 | 187 | |
duke@435 | 188 | private: |
duke@435 | 189 | intptr_t** interpreter_frame_locals_addr() const; |
duke@435 | 190 | intptr_t* interpreter_frame_bcx_addr() const; |
duke@435 | 191 | intptr_t* interpreter_frame_mdx_addr() const; |
duke@435 | 192 | |
duke@435 | 193 | public: |
duke@435 | 194 | // Tags for TaggedStackInterpreter |
duke@435 | 195 | enum Tag { |
duke@435 | 196 | TagValue = 0, // Important: must be zero to use G0 on sparc. |
duke@435 | 197 | TagReference = 0x555, // Reference type - is an oop that needs gc. |
duke@435 | 198 | TagCategory2 = 0x666 // Only used internally by interpreter |
duke@435 | 199 | // and not written to the java stack. |
duke@435 | 200 | // The values above are chosen so that misuse causes a crash |
duke@435 | 201 | // with a recognizable value. |
duke@435 | 202 | }; |
duke@435 | 203 | |
duke@435 | 204 | static Tag tag_for_basic_type(BasicType typ) { |
duke@435 | 205 | return (typ == T_OBJECT ? TagReference : TagValue); |
duke@435 | 206 | } |
duke@435 | 207 | |
duke@435 | 208 | // Locals |
duke@435 | 209 | |
duke@435 | 210 | // The _at version returns a pointer because the address is used for GC. |
duke@435 | 211 | intptr_t* interpreter_frame_local_at(int index) const; |
duke@435 | 212 | Tag interpreter_frame_local_tag(int index) const; |
duke@435 | 213 | void interpreter_frame_set_local_tag(int index, Tag tag) const; |
duke@435 | 214 | |
duke@435 | 215 | void interpreter_frame_set_locals(intptr_t* locs); |
duke@435 | 216 | |
duke@435 | 217 | // byte code index/pointer (use these functions for unchecked frame access only!) |
duke@435 | 218 | intptr_t interpreter_frame_bcx() const { return *interpreter_frame_bcx_addr(); } |
duke@435 | 219 | void interpreter_frame_set_bcx(intptr_t bcx); |
duke@435 | 220 | |
duke@435 | 221 | // byte code index |
duke@435 | 222 | jint interpreter_frame_bci() const; |
duke@435 | 223 | void interpreter_frame_set_bci(jint bci); |
duke@435 | 224 | |
duke@435 | 225 | // byte code pointer |
duke@435 | 226 | address interpreter_frame_bcp() const; |
duke@435 | 227 | void interpreter_frame_set_bcp(address bcp); |
duke@435 | 228 | |
duke@435 | 229 | // Unchecked access to the method data index/pointer. |
duke@435 | 230 | // Only use this if you know what you are doing. |
duke@435 | 231 | intptr_t interpreter_frame_mdx() const { return *interpreter_frame_mdx_addr(); } |
duke@435 | 232 | void interpreter_frame_set_mdx(intptr_t mdx); |
duke@435 | 233 | |
duke@435 | 234 | // method data pointer |
duke@435 | 235 | address interpreter_frame_mdp() const; |
duke@435 | 236 | void interpreter_frame_set_mdp(address dp); |
duke@435 | 237 | |
duke@435 | 238 | // Find receiver out of caller's (compiled) argument list |
duke@435 | 239 | oop retrieve_receiver(RegisterMap *reg_map); |
duke@435 | 240 | |
duke@435 | 241 | // Return the monitor owner and BasicLock for compiled synchronized |
duke@435 | 242 | // native methods so that biased locking can revoke the receiver's |
duke@435 | 243 | // bias if necessary. Takes optional nmethod for this frame as |
duke@435 | 244 | // argument to avoid performing repeated lookups in code cache. |
duke@435 | 245 | BasicLock* compiled_synchronized_native_monitor (nmethod* nm = NULL); |
duke@435 | 246 | oop compiled_synchronized_native_monitor_owner(nmethod* nm = NULL); |
duke@435 | 247 | |
duke@435 | 248 | // Find receiver for an invoke when arguments are just pushed on stack (i.e., callee stack-frame is |
duke@435 | 249 | // not setup) |
duke@435 | 250 | oop interpreter_callee_receiver(symbolHandle signature) { return *interpreter_callee_receiver_addr(signature); } |
duke@435 | 251 | |
duke@435 | 252 | |
coleenp@548 | 253 | oop* interpreter_callee_receiver_addr(symbolHandle signature); |
duke@435 | 254 | |
duke@435 | 255 | |
duke@435 | 256 | // expression stack (may go up or down, direction == 1 or -1) |
duke@435 | 257 | public: |
duke@435 | 258 | intptr_t* interpreter_frame_expression_stack() const; |
duke@435 | 259 | static jint interpreter_frame_expression_stack_direction(); |
duke@435 | 260 | |
duke@435 | 261 | // The _at version returns a pointer because the address is used for GC. |
duke@435 | 262 | intptr_t* interpreter_frame_expression_stack_at(jint offset) const; |
duke@435 | 263 | Tag interpreter_frame_expression_stack_tag(jint offset) const; |
duke@435 | 264 | void interpreter_frame_set_expression_stack_tag(jint offset, Tag tag) const; |
duke@435 | 265 | |
duke@435 | 266 | // top of expression stack |
duke@435 | 267 | intptr_t* interpreter_frame_tos_at(jint offset) const; |
duke@435 | 268 | intptr_t* interpreter_frame_tos_address() const; |
duke@435 | 269 | |
duke@435 | 270 | |
duke@435 | 271 | jint interpreter_frame_expression_stack_size() const; |
duke@435 | 272 | |
duke@435 | 273 | intptr_t* interpreter_frame_sender_sp() const; |
duke@435 | 274 | |
duke@435 | 275 | #ifndef CC_INTERP |
duke@435 | 276 | // template based interpreter deoptimization support |
duke@435 | 277 | void set_interpreter_frame_sender_sp(intptr_t* sender_sp); |
duke@435 | 278 | void interpreter_frame_set_monitor_end(BasicObjectLock* value); |
duke@435 | 279 | #endif // CC_INTERP |
duke@435 | 280 | |
duke@435 | 281 | // BasicObjectLocks: |
duke@435 | 282 | // |
duke@435 | 283 | // interpreter_frame_monitor_begin is higher in memory than interpreter_frame_monitor_end |
duke@435 | 284 | // Interpreter_frame_monitor_begin points to one element beyond the oldest one, |
duke@435 | 285 | // interpreter_frame_monitor_end points to the youngest one, or if there are none, |
duke@435 | 286 | // it points to one beyond where the first element will be. |
duke@435 | 287 | // interpreter_frame_monitor_size reports the allocation size of a monitor in the interpreter stack. |
duke@435 | 288 | // this value is >= BasicObjectLock::size(), and may be rounded up |
duke@435 | 289 | |
duke@435 | 290 | BasicObjectLock* interpreter_frame_monitor_begin() const; |
duke@435 | 291 | BasicObjectLock* interpreter_frame_monitor_end() const; |
duke@435 | 292 | BasicObjectLock* next_monitor_in_interpreter_frame(BasicObjectLock* current) const; |
duke@435 | 293 | BasicObjectLock* previous_monitor_in_interpreter_frame(BasicObjectLock* current) const; |
duke@435 | 294 | static int interpreter_frame_monitor_size(); |
duke@435 | 295 | |
duke@435 | 296 | void interpreter_frame_verify_monitor(BasicObjectLock* value) const; |
duke@435 | 297 | |
duke@435 | 298 | // Tells whether the current interpreter_frame frame pointer |
duke@435 | 299 | // corresponds to the old compiled/deoptimized fp |
duke@435 | 300 | // The receiver used to be a top level frame |
duke@435 | 301 | bool interpreter_frame_equals_unpacked_fp(intptr_t* fp); |
duke@435 | 302 | |
duke@435 | 303 | // Return/result value from this interpreter frame |
duke@435 | 304 | // If the method return type is T_OBJECT or T_ARRAY populates oop_result |
duke@435 | 305 | // For other (non-T_VOID) the appropriate field in the jvalue is populated |
duke@435 | 306 | // with the result value. |
duke@435 | 307 | // Should only be called when at method exit when the method is not |
duke@435 | 308 | // exiting due to an exception. |
duke@435 | 309 | BasicType interpreter_frame_result(oop* oop_result, jvalue* value_result); |
duke@435 | 310 | |
duke@435 | 311 | public: |
duke@435 | 312 | // Method & constant pool cache |
duke@435 | 313 | methodOop interpreter_frame_method() const; |
duke@435 | 314 | void interpreter_frame_set_method(methodOop method); |
duke@435 | 315 | methodOop* interpreter_frame_method_addr() const; |
duke@435 | 316 | constantPoolCacheOop* interpreter_frame_cache_addr() const; |
duke@435 | 317 | |
duke@435 | 318 | public: |
duke@435 | 319 | // Entry frames |
duke@435 | 320 | JavaCallWrapper* entry_frame_call_wrapper() const; |
duke@435 | 321 | intptr_t* entry_frame_argument_at(int offset) const; |
duke@435 | 322 | |
duke@435 | 323 | // tells whether there is another chunk of Delta stack above |
duke@435 | 324 | bool entry_frame_is_first() const; |
duke@435 | 325 | |
duke@435 | 326 | // Compiled frames: |
duke@435 | 327 | |
duke@435 | 328 | public: |
duke@435 | 329 | // Given the index of a local, and the number of argument words |
duke@435 | 330 | // in this stack frame, tell which word of the stack frame to find |
duke@435 | 331 | // the local in. Arguments are stored above the ofp/rpc pair, |
duke@435 | 332 | // while other locals are stored below it. |
duke@435 | 333 | // Since monitors (BasicLock blocks) are also assigned indexes, |
duke@435 | 334 | // but may have different storage requirements, their presence |
duke@435 | 335 | // can also affect the calculation of offsets. |
duke@435 | 336 | static int local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors); |
duke@435 | 337 | |
duke@435 | 338 | // Given the index of a monitor, etc., tell which word of the |
duke@435 | 339 | // stack frame contains the start of the BasicLock block. |
duke@435 | 340 | // Note that the local index by convention is the __higher__ |
duke@435 | 341 | // of the two indexes allocated to the block. |
duke@435 | 342 | static int monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors); |
duke@435 | 343 | |
duke@435 | 344 | // Tell the smallest value that local_offset_for_compiler will attain. |
duke@435 | 345 | // This is used to help determine how much stack frame to allocate. |
duke@435 | 346 | static int min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors); |
duke@435 | 347 | |
duke@435 | 348 | // Tells if this register must be spilled during a call. |
duke@435 | 349 | // On Intel, all registers are smashed by calls. |
duke@435 | 350 | static bool volatile_across_calls(Register reg); |
duke@435 | 351 | |
duke@435 | 352 | |
duke@435 | 353 | // Safepoints |
duke@435 | 354 | |
duke@435 | 355 | public: |
duke@435 | 356 | oop saved_oop_result(RegisterMap* map) const; |
duke@435 | 357 | void set_saved_oop_result(RegisterMap* map, oop obj); |
duke@435 | 358 | |
duke@435 | 359 | // For debugging |
duke@435 | 360 | private: |
duke@435 | 361 | const char* print_name() const; |
duke@435 | 362 | |
duke@435 | 363 | public: |
duke@435 | 364 | void print_value() const { print_value_on(tty,NULL); } |
duke@435 | 365 | void print_value_on(outputStream* st, JavaThread *thread) const; |
duke@435 | 366 | void print_on(outputStream* st) const; |
duke@435 | 367 | void interpreter_frame_print_on(outputStream* st) const; |
duke@435 | 368 | void print_on_error(outputStream* st, char* buf, int buflen, bool verbose = false) const; |
duke@435 | 369 | |
duke@435 | 370 | // Conversion from an VMReg to physical stack location |
duke@435 | 371 | oop* oopmapreg_to_location(VMReg reg, const RegisterMap* regmap) const; |
duke@435 | 372 | |
duke@435 | 373 | // Oops-do's |
duke@435 | 374 | void oops_compiled_arguments_do(symbolHandle signature, bool is_static, const RegisterMap* reg_map, OopClosure* f); |
duke@435 | 375 | void oops_interpreted_do(OopClosure* f, const RegisterMap* map, bool query_oop_map_cache = true); |
duke@435 | 376 | |
duke@435 | 377 | private: |
duke@435 | 378 | void oops_interpreted_locals_do(OopClosure *f, |
duke@435 | 379 | int max_locals, |
duke@435 | 380 | InterpreterOopMap *mask); |
duke@435 | 381 | void oops_interpreted_expressions_do(OopClosure *f, symbolHandle signature, |
duke@435 | 382 | bool is_static, int max_stack, int max_locals, |
duke@435 | 383 | InterpreterOopMap *mask); |
duke@435 | 384 | void oops_interpreted_arguments_do(symbolHandle signature, bool is_static, OopClosure* f); |
duke@435 | 385 | |
duke@435 | 386 | // Iteration of oops |
duke@435 | 387 | void oops_do_internal(OopClosure* f, RegisterMap* map, bool use_interpreter_oop_map_cache); |
duke@435 | 388 | void oops_entry_do(OopClosure* f, const RegisterMap* map); |
duke@435 | 389 | void oops_code_blob_do(OopClosure* f, const RegisterMap* map); |
duke@435 | 390 | int adjust_offset(methodOop method, int index); // helper for above fn |
duke@435 | 391 | // Iteration of nmethods |
duke@435 | 392 | void nmethods_code_blob_do(); |
duke@435 | 393 | public: |
duke@435 | 394 | // Memory management |
duke@435 | 395 | void oops_do(OopClosure* f, RegisterMap* map) { oops_do_internal(f, map, true); } |
duke@435 | 396 | void nmethods_do(); |
duke@435 | 397 | |
duke@435 | 398 | void gc_prologue(); |
duke@435 | 399 | void gc_epilogue(); |
duke@435 | 400 | void pd_gc_epilog(); |
duke@435 | 401 | |
duke@435 | 402 | # ifdef ENABLE_ZAP_DEAD_LOCALS |
duke@435 | 403 | private: |
duke@435 | 404 | class CheckValueClosure: public OopClosure { |
coleenp@548 | 405 | public: |
coleenp@548 | 406 | void do_oop(oop* p); |
coleenp@548 | 407 | void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
duke@435 | 408 | }; |
duke@435 | 409 | static CheckValueClosure _check_value; |
duke@435 | 410 | |
duke@435 | 411 | class CheckOopClosure: public OopClosure { |
coleenp@548 | 412 | public: |
coleenp@548 | 413 | void do_oop(oop* p); |
coleenp@548 | 414 | void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
duke@435 | 415 | }; |
duke@435 | 416 | static CheckOopClosure _check_oop; |
duke@435 | 417 | |
duke@435 | 418 | static void check_derived_oop(oop* base, oop* derived); |
duke@435 | 419 | |
duke@435 | 420 | class ZapDeadClosure: public OopClosure { |
coleenp@548 | 421 | public: |
coleenp@548 | 422 | void do_oop(oop* p); |
coleenp@548 | 423 | void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
duke@435 | 424 | }; |
duke@435 | 425 | static ZapDeadClosure _zap_dead; |
duke@435 | 426 | |
duke@435 | 427 | public: |
duke@435 | 428 | // Zapping |
duke@435 | 429 | void zap_dead_locals (JavaThread* thread, const RegisterMap* map); |
duke@435 | 430 | void zap_dead_interpreted_locals(JavaThread* thread, const RegisterMap* map); |
duke@435 | 431 | void zap_dead_compiled_locals (JavaThread* thread, const RegisterMap* map); |
duke@435 | 432 | void zap_dead_entry_locals (JavaThread* thread, const RegisterMap* map); |
duke@435 | 433 | void zap_dead_deoptimized_locals(JavaThread* thread, const RegisterMap* map); |
duke@435 | 434 | # endif |
duke@435 | 435 | // Verification |
duke@435 | 436 | void verify(const RegisterMap* map); |
duke@435 | 437 | static bool verify_return_pc(address x); |
duke@435 | 438 | static bool is_bci(intptr_t bcx); |
duke@435 | 439 | // Usage: |
duke@435 | 440 | // assert(frame::verify_return_pc(return_address), "must be a return pc"); |
duke@435 | 441 | |
duke@435 | 442 | int pd_oop_map_offset_adjustment() const; |
duke@435 | 443 | |
duke@435 | 444 | # include "incls/_frame_pd.hpp.incl" |
duke@435 | 445 | }; |
duke@435 | 446 | |
duke@435 | 447 | |
duke@435 | 448 | // |
duke@435 | 449 | // StackFrameStream iterates through the frames of a thread starting from |
duke@435 | 450 | // top most frame. It automatically takes care of updating the location of |
duke@435 | 451 | // all (callee-saved) registers. Notice: If a thread is stopped at |
duke@435 | 452 | // a safepoint, all registers are saved, not only the callee-saved ones. |
duke@435 | 453 | // |
duke@435 | 454 | // Use: |
duke@435 | 455 | // |
duke@435 | 456 | // for(StackFrameStream fst(thread); !fst.is_done(); fst.next()) { |
duke@435 | 457 | // ... |
duke@435 | 458 | // } |
duke@435 | 459 | // |
duke@435 | 460 | class StackFrameStream : public StackObj { |
duke@435 | 461 | private: |
duke@435 | 462 | frame _fr; |
duke@435 | 463 | RegisterMap _reg_map; |
duke@435 | 464 | bool _is_done; |
duke@435 | 465 | public: |
duke@435 | 466 | StackFrameStream(JavaThread *thread, bool update = true); |
duke@435 | 467 | |
duke@435 | 468 | // Iteration |
duke@435 | 469 | bool is_done() { return (_is_done) ? true : (_is_done = _fr.is_first_frame(), false); } |
duke@435 | 470 | void next() { if (!_is_done) _fr = _fr.sender(&_reg_map); } |
duke@435 | 471 | |
duke@435 | 472 | // Query |
duke@435 | 473 | frame *current() { return &_fr; } |
duke@435 | 474 | RegisterMap* register_map() { return &_reg_map; } |
duke@435 | 475 | }; |