Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/frame.hpp @ 2162:ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
Summary: Restore use of stillborn flag
Reviewed-by: acorn, alanb
author | dholmes |
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date | Tue, 25 Jan 2011 00:14:21 -0500 |
parents | 09b4dd4f152b |
children | 3582bf76420e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_FRAME_HPP |
26 #define SHARE_VM_RUNTIME_FRAME_HPP | |
27 | |
28 #include "asm/assembler.hpp" | |
29 #include "oops/methodOop.hpp" | |
30 #include "runtime/basicLock.hpp" | |
31 #include "runtime/monitorChunk.hpp" | |
32 #include "runtime/registerMap.hpp" | |
33 #include "utilities/top.hpp" | |
34 #ifdef COMPILER2 | |
35 #ifdef TARGET_ARCH_MODEL_x86_32 | |
36 # include "adfiles/adGlobals_x86_32.hpp" | |
37 #endif | |
38 #ifdef TARGET_ARCH_MODEL_x86_64 | |
39 # include "adfiles/adGlobals_x86_64.hpp" | |
40 #endif | |
41 #ifdef TARGET_ARCH_MODEL_sparc | |
42 # include "adfiles/adGlobals_sparc.hpp" | |
43 #endif | |
44 #ifdef TARGET_ARCH_MODEL_zero | |
45 # include "adfiles/adGlobals_zero.hpp" | |
46 #endif | |
47 #endif | |
48 #ifdef ZERO | |
49 #ifdef TARGET_ARCH_zero | |
50 # include "stack_zero.hpp" | |
51 #endif | |
52 #endif | |
53 | |
0 | 54 typedef class BytecodeInterpreter* interpreterState; |
55 | |
56 class CodeBlob; | |
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57 class vframeArray; |
0 | 58 |
59 | |
60 // A frame represents a physical stack frame (an activation). Frames | |
61 // can be C or Java frames, and the Java frames can be interpreted or | |
62 // compiled. In contrast, vframes represent source-level activations, | |
63 // so that one physical frame can correspond to multiple source level | |
64 // frames because of inlining. | |
65 | |
66 class frame VALUE_OBJ_CLASS_SPEC { | |
67 private: | |
68 // Instance variables: | |
69 intptr_t* _sp; // stack pointer (from Thread::last_Java_sp) | |
70 address _pc; // program counter (the next instruction after the call) | |
71 | |
72 CodeBlob* _cb; // CodeBlob that "owns" pc | |
73 enum deopt_state { | |
74 not_deoptimized, | |
75 is_deoptimized, | |
76 unknown | |
77 }; | |
78 | |
79 deopt_state _deopt_state; | |
80 | |
81 public: | |
82 // Constructors | |
83 frame(); | |
84 | |
85 // Accessors | |
86 | |
87 // pc: Returns the pc at which this frame will continue normally. | |
88 // It must point at the beginning of the next instruction to execute. | |
89 address pc() const { return _pc; } | |
90 | |
91 // This returns the pc that if you were in the debugger you'd see. Not | |
92 // the idealized value in the frame object. This undoes the magic conversion | |
93 // that happens for deoptimized frames. In addition it makes the value the | |
94 // hardware would want to see in the native frame. The only user (at this point) | |
95 // is deoptimization. It likely no one else should ever use it. | |
96 address raw_pc() const; | |
97 | |
98 void set_pc( address newpc ); | |
99 | |
100 intptr_t* sp() const { return _sp; } | |
101 void set_sp( intptr_t* newsp ) { _sp = newsp; } | |
102 | |
103 | |
104 CodeBlob* cb() const { return _cb; } | |
105 | |
106 // patching operations | |
107 void patch_pc(Thread* thread, address pc); | |
108 | |
109 // Every frame needs to return a unique id which distinguishes it from all other frames. | |
110 // For sparc and ia32 use sp. ia64 can have memory frames that are empty so multiple frames | |
111 // will have identical sp values. For ia64 the bsp (fp) value will serve. No real frame | |
112 // should have an id() of NULL so it is a distinguishing value for an unmatchable frame. | |
113 // We also have relationals which allow comparing a frame to anoth frame's id() allow | |
114 // us to distinguish younger (more recent activation) from older (less recent activations) | |
115 // A NULL id is only valid when comparing for equality. | |
116 | |
117 intptr_t* id(void) const; | |
118 bool is_younger(intptr_t* id) const; | |
119 bool is_older(intptr_t* id) const; | |
120 | |
121 // testers | |
122 | |
123 // Compares for strict equality. Rarely used or needed. | |
124 // It can return a different result than f1.id() == f2.id() | |
125 bool equal(frame other) const; | |
126 | |
127 // type testers | |
128 bool is_interpreted_frame() const; | |
129 bool is_java_frame() const; | |
130 bool is_entry_frame() const; // Java frame called from C? | |
131 bool is_native_frame() const; | |
132 bool is_runtime_frame() const; | |
133 bool is_compiled_frame() const; | |
134 bool is_safepoint_blob_frame() const; | |
135 bool is_deoptimized_frame() const; | |
136 | |
137 // testers | |
138 bool is_first_frame() const; // oldest frame? (has no sender) | |
139 bool is_first_java_frame() const; // same for Java frame | |
140 | |
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141 bool is_interpreted_frame_valid(JavaThread* thread) const; // performs sanity checks on interpreted frames. |
0 | 142 |
143 // tells whether this frame is marked for deoptimization | |
144 bool should_be_deoptimized() const; | |
145 | |
146 // tells whether this frame can be deoptimized | |
147 bool can_be_deoptimized() const; | |
148 | |
149 // returns the frame size in stack slots | |
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150 int frame_size(RegisterMap* map) const; |
0 | 151 |
152 // returns the sending frame | |
153 frame sender(RegisterMap* map) const; | |
154 | |
155 // for Profiling - acting on another frame. walks sender frames | |
156 // if valid. | |
157 frame profile_find_Java_sender_frame(JavaThread *thread); | |
158 bool safe_for_sender(JavaThread *thread); | |
159 | |
160 // returns the sender, but skips conversion frames | |
161 frame real_sender(RegisterMap* map) const; | |
162 | |
163 // returns the the sending Java frame, skipping any intermediate C frames | |
164 // NB: receiver must not be first frame | |
165 frame java_sender() const; | |
166 | |
167 private: | |
168 // Helper methods for better factored code in frame::sender | |
169 frame sender_for_compiled_frame(RegisterMap* map) const; | |
170 frame sender_for_entry_frame(RegisterMap* map) const; | |
171 frame sender_for_interpreter_frame(RegisterMap* map) const; | |
172 frame sender_for_native_frame(RegisterMap* map) const; | |
173 | |
174 // All frames: | |
175 | |
176 // A low-level interface for vframes: | |
177 | |
178 public: | |
179 | |
180 intptr_t* addr_at(int index) const { return &fp()[index]; } | |
181 intptr_t at(int index) const { return *addr_at(index); } | |
182 | |
183 // accessors for locals | |
184 oop obj_at(int offset) const { return *obj_at_addr(offset); } | |
185 void obj_at_put(int offset, oop value) { *obj_at_addr(offset) = value; } | |
186 | |
187 jint int_at(int offset) const { return *int_at_addr(offset); } | |
188 void int_at_put(int offset, jint value) { *int_at_addr(offset) = value; } | |
189 | |
190 oop* obj_at_addr(int offset) const { return (oop*) addr_at(offset); } | |
191 | |
192 oop* adjusted_obj_at_addr(methodOop method, int index) { return obj_at_addr(adjust_offset(method, index)); } | |
193 | |
194 private: | |
195 jint* int_at_addr(int offset) const { return (jint*) addr_at(offset); } | |
196 | |
197 public: | |
198 // Link (i.e., the pointer to the previous frame) | |
199 intptr_t* link() const; | |
200 void set_link(intptr_t* addr); | |
201 | |
202 // Return address | |
203 address sender_pc() const; | |
204 | |
205 // Support for deoptimization | |
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206 void deoptimize(JavaThread* thread); |
0 | 207 |
208 // The frame's original SP, before any extension by an interpreted callee; | |
209 // used for packing debug info into vframeArray objects and vframeArray lookup. | |
210 intptr_t* unextended_sp() const; | |
211 | |
212 // returns the stack pointer of the calling frame | |
213 intptr_t* sender_sp() const; | |
214 | |
215 | |
216 // Interpreter frames: | |
217 | |
218 private: | |
219 intptr_t** interpreter_frame_locals_addr() const; | |
220 intptr_t* interpreter_frame_bcx_addr() const; | |
221 intptr_t* interpreter_frame_mdx_addr() const; | |
222 | |
223 public: | |
224 // Locals | |
225 | |
226 // The _at version returns a pointer because the address is used for GC. | |
227 intptr_t* interpreter_frame_local_at(int index) const; | |
228 | |
229 void interpreter_frame_set_locals(intptr_t* locs); | |
230 | |
231 // byte code index/pointer (use these functions for unchecked frame access only!) | |
232 intptr_t interpreter_frame_bcx() const { return *interpreter_frame_bcx_addr(); } | |
233 void interpreter_frame_set_bcx(intptr_t bcx); | |
234 | |
235 // byte code index | |
236 jint interpreter_frame_bci() const; | |
237 void interpreter_frame_set_bci(jint bci); | |
238 | |
239 // byte code pointer | |
240 address interpreter_frame_bcp() const; | |
241 void interpreter_frame_set_bcp(address bcp); | |
242 | |
243 // Unchecked access to the method data index/pointer. | |
244 // Only use this if you know what you are doing. | |
245 intptr_t interpreter_frame_mdx() const { return *interpreter_frame_mdx_addr(); } | |
246 void interpreter_frame_set_mdx(intptr_t mdx); | |
247 | |
248 // method data pointer | |
249 address interpreter_frame_mdp() const; | |
250 void interpreter_frame_set_mdp(address dp); | |
251 | |
252 // Find receiver out of caller's (compiled) argument list | |
253 oop retrieve_receiver(RegisterMap *reg_map); | |
254 | |
255 // Return the monitor owner and BasicLock for compiled synchronized | |
256 // native methods so that biased locking can revoke the receiver's | |
2019 | 257 // bias if necessary. This is also used by JVMTI's GetLocalInstance method |
258 // (via VM_GetReceiver) to retrieve the receiver from a native wrapper frame. | |
259 BasicLock* get_native_monitor(); | |
260 oop get_native_receiver(); | |
0 | 261 |
262 // Find receiver for an invoke when arguments are just pushed on stack (i.e., callee stack-frame is | |
263 // not setup) | |
264 oop interpreter_callee_receiver(symbolHandle signature) { return *interpreter_callee_receiver_addr(signature); } | |
265 | |
266 | |
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267 oop* interpreter_callee_receiver_addr(symbolHandle signature); |
0 | 268 |
269 | |
270 // expression stack (may go up or down, direction == 1 or -1) | |
271 public: | |
272 intptr_t* interpreter_frame_expression_stack() const; | |
273 static jint interpreter_frame_expression_stack_direction(); | |
274 | |
275 // The _at version returns a pointer because the address is used for GC. | |
276 intptr_t* interpreter_frame_expression_stack_at(jint offset) const; | |
277 | |
278 // top of expression stack | |
279 intptr_t* interpreter_frame_tos_at(jint offset) const; | |
280 intptr_t* interpreter_frame_tos_address() const; | |
281 | |
282 | |
283 jint interpreter_frame_expression_stack_size() const; | |
284 | |
285 intptr_t* interpreter_frame_sender_sp() const; | |
286 | |
287 #ifndef CC_INTERP | |
288 // template based interpreter deoptimization support | |
289 void set_interpreter_frame_sender_sp(intptr_t* sender_sp); | |
290 void interpreter_frame_set_monitor_end(BasicObjectLock* value); | |
291 #endif // CC_INTERP | |
292 | |
293 // BasicObjectLocks: | |
294 // | |
295 // interpreter_frame_monitor_begin is higher in memory than interpreter_frame_monitor_end | |
296 // Interpreter_frame_monitor_begin points to one element beyond the oldest one, | |
297 // interpreter_frame_monitor_end points to the youngest one, or if there are none, | |
298 // it points to one beyond where the first element will be. | |
299 // interpreter_frame_monitor_size reports the allocation size of a monitor in the interpreter stack. | |
300 // this value is >= BasicObjectLock::size(), and may be rounded up | |
301 | |
302 BasicObjectLock* interpreter_frame_monitor_begin() const; | |
303 BasicObjectLock* interpreter_frame_monitor_end() const; | |
304 BasicObjectLock* next_monitor_in_interpreter_frame(BasicObjectLock* current) const; | |
305 BasicObjectLock* previous_monitor_in_interpreter_frame(BasicObjectLock* current) const; | |
306 static int interpreter_frame_monitor_size(); | |
307 | |
308 void interpreter_frame_verify_monitor(BasicObjectLock* value) const; | |
309 | |
310 // Tells whether the current interpreter_frame frame pointer | |
311 // corresponds to the old compiled/deoptimized fp | |
312 // The receiver used to be a top level frame | |
313 bool interpreter_frame_equals_unpacked_fp(intptr_t* fp); | |
314 | |
315 // Return/result value from this interpreter frame | |
316 // If the method return type is T_OBJECT or T_ARRAY populates oop_result | |
317 // For other (non-T_VOID) the appropriate field in the jvalue is populated | |
318 // with the result value. | |
319 // Should only be called when at method exit when the method is not | |
320 // exiting due to an exception. | |
321 BasicType interpreter_frame_result(oop* oop_result, jvalue* value_result); | |
322 | |
323 public: | |
324 // Method & constant pool cache | |
325 methodOop interpreter_frame_method() const; | |
326 void interpreter_frame_set_method(methodOop method); | |
327 methodOop* interpreter_frame_method_addr() const; | |
328 constantPoolCacheOop* interpreter_frame_cache_addr() const; | |
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329 #ifdef PPC |
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330 oop* interpreter_frame_mirror_addr() const; |
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331 #endif |
0 | 332 |
333 public: | |
334 // Entry frames | |
335 JavaCallWrapper* entry_frame_call_wrapper() const; | |
336 intptr_t* entry_frame_argument_at(int offset) const; | |
337 | |
338 // tells whether there is another chunk of Delta stack above | |
339 bool entry_frame_is_first() const; | |
340 | |
341 // Compiled frames: | |
342 | |
343 public: | |
344 // Given the index of a local, and the number of argument words | |
345 // in this stack frame, tell which word of the stack frame to find | |
346 // the local in. Arguments are stored above the ofp/rpc pair, | |
347 // while other locals are stored below it. | |
348 // Since monitors (BasicLock blocks) are also assigned indexes, | |
349 // but may have different storage requirements, their presence | |
350 // can also affect the calculation of offsets. | |
351 static int local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors); | |
352 | |
353 // Given the index of a monitor, etc., tell which word of the | |
354 // stack frame contains the start of the BasicLock block. | |
355 // Note that the local index by convention is the __higher__ | |
356 // of the two indexes allocated to the block. | |
357 static int monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors); | |
358 | |
359 // Tell the smallest value that local_offset_for_compiler will attain. | |
360 // This is used to help determine how much stack frame to allocate. | |
361 static int min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors); | |
362 | |
363 // Tells if this register must be spilled during a call. | |
364 // On Intel, all registers are smashed by calls. | |
365 static bool volatile_across_calls(Register reg); | |
366 | |
367 | |
368 // Safepoints | |
369 | |
370 public: | |
371 oop saved_oop_result(RegisterMap* map) const; | |
372 void set_saved_oop_result(RegisterMap* map, oop obj); | |
373 | |
374 // For debugging | |
375 private: | |
376 const char* print_name() const; | |
377 | |
378 public: | |
379 void print_value() const { print_value_on(tty,NULL); } | |
380 void print_value_on(outputStream* st, JavaThread *thread) const; | |
381 void print_on(outputStream* st) const; | |
382 void interpreter_frame_print_on(outputStream* st) const; | |
383 void print_on_error(outputStream* st, char* buf, int buflen, bool verbose = false) const; | |
384 | |
385 // Conversion from an VMReg to physical stack location | |
386 oop* oopmapreg_to_location(VMReg reg, const RegisterMap* regmap) const; | |
387 | |
388 // Oops-do's | |
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389 void oops_compiled_arguments_do(symbolHandle signature, bool has_receiver, const RegisterMap* reg_map, OopClosure* f); |
0 | 390 void oops_interpreted_do(OopClosure* f, const RegisterMap* map, bool query_oop_map_cache = true); |
391 | |
392 private: | |
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393 void oops_interpreted_arguments_do(symbolHandle signature, bool has_receiver, OopClosure* f); |
0 | 394 |
395 // Iteration of oops | |
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396 void oops_do_internal(OopClosure* f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache); |
0 | 397 void oops_entry_do(OopClosure* f, const RegisterMap* map); |
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398 void oops_code_blob_do(OopClosure* f, CodeBlobClosure* cf, const RegisterMap* map); |
0 | 399 int adjust_offset(methodOop method, int index); // helper for above fn |
400 public: | |
401 // Memory management | |
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402 void oops_do(OopClosure* f, CodeBlobClosure* cf, RegisterMap* map) { oops_do_internal(f, cf, map, true); } |
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403 void nmethods_do(CodeBlobClosure* cf); |
0 | 404 |
405 void gc_prologue(); | |
406 void gc_epilogue(); | |
407 void pd_gc_epilog(); | |
408 | |
409 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
410 private: | |
411 class CheckValueClosure: public OopClosure { | |
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412 public: |
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413 void do_oop(oop* p); |
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414 void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
0 | 415 }; |
416 static CheckValueClosure _check_value; | |
417 | |
418 class CheckOopClosure: public OopClosure { | |
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419 public: |
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420 void do_oop(oop* p); |
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421 void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
0 | 422 }; |
423 static CheckOopClosure _check_oop; | |
424 | |
425 static void check_derived_oop(oop* base, oop* derived); | |
426 | |
427 class ZapDeadClosure: public OopClosure { | |
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428 public: |
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429 void do_oop(oop* p); |
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430 void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
0 | 431 }; |
432 static ZapDeadClosure _zap_dead; | |
433 | |
434 public: | |
435 // Zapping | |
436 void zap_dead_locals (JavaThread* thread, const RegisterMap* map); | |
437 void zap_dead_interpreted_locals(JavaThread* thread, const RegisterMap* map); | |
438 void zap_dead_compiled_locals (JavaThread* thread, const RegisterMap* map); | |
439 void zap_dead_entry_locals (JavaThread* thread, const RegisterMap* map); | |
440 void zap_dead_deoptimized_locals(JavaThread* thread, const RegisterMap* map); | |
441 # endif | |
442 // Verification | |
443 void verify(const RegisterMap* map); | |
444 static bool verify_return_pc(address x); | |
445 static bool is_bci(intptr_t bcx); | |
446 // Usage: | |
447 // assert(frame::verify_return_pc(return_address), "must be a return pc"); | |
448 | |
449 int pd_oop_map_offset_adjustment() const; | |
450 | |
1972 | 451 #ifdef TARGET_ARCH_x86 |
452 # include "frame_x86.hpp" | |
453 #endif | |
454 #ifdef TARGET_ARCH_sparc | |
455 # include "frame_sparc.hpp" | |
456 #endif | |
457 #ifdef TARGET_ARCH_zero | |
458 # include "frame_zero.hpp" | |
459 #endif | |
460 | |
0 | 461 }; |
462 | |
463 | |
464 // | |
465 // StackFrameStream iterates through the frames of a thread starting from | |
466 // top most frame. It automatically takes care of updating the location of | |
467 // all (callee-saved) registers. Notice: If a thread is stopped at | |
468 // a safepoint, all registers are saved, not only the callee-saved ones. | |
469 // | |
470 // Use: | |
471 // | |
472 // for(StackFrameStream fst(thread); !fst.is_done(); fst.next()) { | |
473 // ... | |
474 // } | |
475 // | |
476 class StackFrameStream : public StackObj { | |
477 private: | |
478 frame _fr; | |
479 RegisterMap _reg_map; | |
480 bool _is_done; | |
481 public: | |
482 StackFrameStream(JavaThread *thread, bool update = true); | |
483 | |
484 // Iteration | |
485 bool is_done() { return (_is_done) ? true : (_is_done = _fr.is_first_frame(), false); } | |
486 void next() { if (!_is_done) _fr = _fr.sender(&_reg_map); } | |
487 | |
488 // Query | |
489 frame *current() { return &_fr; } | |
490 RegisterMap* register_map() { return &_reg_map; } | |
491 }; | |
1972 | 492 |
493 #endif // SHARE_VM_RUNTIME_FRAME_HPP |