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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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34 namespace internal { | 34 namespace internal { |
35 | 35 |
36 | 36 |
37 #define RETURN_IF_SCHEDULED_EXCEPTION() \ | 37 #define RETURN_IF_SCHEDULED_EXCEPTION() \ |
38 if (Top::has_scheduled_exception()) return Top::PromoteScheduledException() | 38 if (Top::has_scheduled_exception()) return Top::PromoteScheduledException() |
39 | 39 |
40 // Top has static variables used for JavaScript execution. | 40 // Top has static variables used for JavaScript execution. |
41 | 41 |
42 class SaveContext; // Forward declaration. | 42 class SaveContext; // Forward declaration. |
43 class ThreadVisitor; // Defined in v8threads.h | 43 class ThreadVisitor; // Defined in v8threads.h |
| 44 class VMState; // Defined in vm-state.h |
44 | 45 |
45 class ThreadLocalTop BASE_EMBEDDED { | 46 class ThreadLocalTop BASE_EMBEDDED { |
46 public: | 47 public: |
47 // Initialize the thread data. | 48 // Initialize the thread data. |
48 void Initialize(); | 49 void Initialize(); |
49 | 50 |
50 // Get the top C++ try catch handler or NULL if none are registered. | 51 // Get the top C++ try catch handler or NULL if none are registered. |
51 // | 52 // |
52 // This method is not guarenteed to return an address that can be | 53 // This method is not guarenteed to return an address that can be |
53 // used for comparison with addresses into the JS stack. If such an | 54 // used for comparison with addresses into the JS stack. If such an |
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94 // invariants that hold about pending_exception. We may want to | 95 // invariants that hold about pending_exception. We may want to |
95 // unify them later. | 96 // unify them later. |
96 Object* scheduled_exception_; | 97 Object* scheduled_exception_; |
97 bool external_caught_exception_; | 98 bool external_caught_exception_; |
98 SaveContext* save_context_; | 99 SaveContext* save_context_; |
99 v8::TryCatch* catcher_; | 100 v8::TryCatch* catcher_; |
100 | 101 |
101 // Stack. | 102 // Stack. |
102 Address c_entry_fp_; // the frame pointer of the top c entry frame | 103 Address c_entry_fp_; // the frame pointer of the top c entry frame |
103 Address handler_; // try-blocks are chained through the stack | 104 Address handler_; // try-blocks are chained through the stack |
| 105 |
104 #ifdef ENABLE_LOGGING_AND_PROFILING | 106 #ifdef ENABLE_LOGGING_AND_PROFILING |
105 Address js_entry_sp_; // the stack pointer of the bottom js entry frame | 107 Address js_entry_sp_; // the stack pointer of the bottom js entry frame |
106 #endif | 108 #endif |
107 | 109 |
| 110 #ifdef ENABLE_VMSTATE_TRACKING |
| 111 VMState* current_vm_state_; |
| 112 #endif |
| 113 |
108 // Generated code scratch locations. | 114 // Generated code scratch locations. |
109 int32_t formal_count_; | 115 int32_t formal_count_; |
110 | 116 |
111 // Call back function to report unsafe JS accesses. | 117 // Call back function to report unsafe JS accesses. |
112 v8::FailedAccessCheckCallback failed_access_check_callback_; | 118 v8::FailedAccessCheckCallback failed_access_check_callback_; |
113 | 119 |
114 private: | 120 private: |
115 Address try_catch_handler_address_; | 121 Address try_catch_handler_address_; |
116 }; | 122 }; |
117 | 123 |
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247 #ifdef ENABLE_LOGGING_AND_PROFILING | 253 #ifdef ENABLE_LOGGING_AND_PROFILING |
248 // Bottom JS entry (see StackTracer::Trace in log.cc). | 254 // Bottom JS entry (see StackTracer::Trace in log.cc). |
249 static Address js_entry_sp(ThreadLocalTop* thread) { | 255 static Address js_entry_sp(ThreadLocalTop* thread) { |
250 return thread->js_entry_sp_; | 256 return thread->js_entry_sp_; |
251 } | 257 } |
252 static inline Address* js_entry_sp_address() { | 258 static inline Address* js_entry_sp_address() { |
253 return &thread_local_.js_entry_sp_; | 259 return &thread_local_.js_entry_sp_; |
254 } | 260 } |
255 #endif | 261 #endif |
256 | 262 |
| 263 #ifdef ENABLE_VMSTATE_TRACKING |
| 264 static VMState* current_vm_state() { |
| 265 return thread_local_.current_vm_state_; |
| 266 } |
| 267 |
| 268 static void set_current_vm_state(VMState* state) { |
| 269 thread_local_.current_vm_state_ = state; |
| 270 } |
| 271 #endif |
| 272 |
257 // Generated code scratch locations. | 273 // Generated code scratch locations. |
258 static void* formal_count_address() { return &thread_local_.formal_count_; } | 274 static void* formal_count_address() { return &thread_local_.formal_count_; } |
259 | 275 |
260 static void PrintCurrentStackTrace(FILE* out); | 276 static void PrintCurrentStackTrace(FILE* out); |
261 static void PrintStackTrace(FILE* out, char* thread_data); | 277 static void PrintStackTrace(FILE* out, char* thread_data); |
262 static void PrintStack(StringStream* accumulator); | 278 static void PrintStack(StringStream* accumulator); |
263 static void PrintStack(); | 279 static void PrintStack(); |
264 static Handle<String> StackTraceString(); | 280 static Handle<String> StackTraceString(); |
265 static Handle<JSArray> CaptureCurrentStackTrace( | 281 static Handle<JSArray> CaptureCurrentStackTrace( |
266 int frame_limit, | 282 int frame_limit, |
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445 | 461 |
446 class ExecutionAccess BASE_EMBEDDED { | 462 class ExecutionAccess BASE_EMBEDDED { |
447 public: | 463 public: |
448 ExecutionAccess(); | 464 ExecutionAccess(); |
449 ~ExecutionAccess(); | 465 ~ExecutionAccess(); |
450 }; | 466 }; |
451 | 467 |
452 } } // namespace v8::internal | 468 } } // namespace v8::internal |
453 | 469 |
454 #endif // V8_TOP_H_ | 470 #endif // V8_TOP_H_ |
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