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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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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 | 43 |
44 class ThreadLocalTop BASE_EMBEDDED { | 44 class ThreadLocalTop BASE_EMBEDDED { |
45 public: | 45 public: |
46 // The context where the current execution method is created and for variable | 46 // The context where the current execution method is created and for variable |
47 // lookups. | 47 // lookups. |
48 Context* context_; | 48 Context* context_; |
| 49 int thread_id_; |
49 Object* pending_exception_; | 50 Object* pending_exception_; |
50 bool has_pending_message_; | 51 bool has_pending_message_; |
51 const char* pending_message_; | 52 const char* pending_message_; |
52 Object* pending_message_obj_; | 53 Object* pending_message_obj_; |
53 Script* pending_message_script_; | 54 Script* pending_message_script_; |
54 int pending_message_start_pos_; | 55 int pending_message_start_pos_; |
55 int pending_message_end_pos_; | 56 int pending_message_end_pos_; |
56 // Use a separate value for scheduled exceptions to preserve the | 57 // Use a separate value for scheduled exceptions to preserve the |
57 // invariants that hold about pending_exception. We may want to | 58 // invariants that hold about pending_exception. We may want to |
58 // unify them later. | 59 // unify them later. |
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111 static void set_context(Context* context) { | 112 static void set_context(Context* context) { |
112 thread_local_.context_ = context; | 113 thread_local_.context_ = context; |
113 } | 114 } |
114 static Context** context_address() { return &thread_local_.context_; } | 115 static Context** context_address() { return &thread_local_.context_; } |
115 | 116 |
116 static SaveContext* save_context() {return thread_local_.save_context_; } | 117 static SaveContext* save_context() {return thread_local_.save_context_; } |
117 static void set_save_context(SaveContext* save) { | 118 static void set_save_context(SaveContext* save) { |
118 thread_local_.save_context_ = save; | 119 thread_local_.save_context_ = save; |
119 } | 120 } |
120 | 121 |
| 122 // Access to current thread id. |
| 123 static int thread_id() { return thread_local_.thread_id_; } |
| 124 static void set_thread_id(int id) { thread_local_.thread_id_ = id; } |
| 125 |
121 // Interface to pending exception. | 126 // Interface to pending exception. |
122 static Object* pending_exception() { | 127 static Object* pending_exception() { |
123 ASSERT(has_pending_exception()); | 128 ASSERT(has_pending_exception()); |
124 return thread_local_.pending_exception_; | 129 return thread_local_.pending_exception_; |
125 } | 130 } |
126 static bool external_caught_exception() { | 131 static bool external_caught_exception() { |
127 return thread_local_.external_caught_exception_; | 132 return thread_local_.external_caught_exception_; |
128 } | 133 } |
129 static void set_pending_exception(Object* exception) { | 134 static void set_pending_exception(Object* exception) { |
130 thread_local_.pending_exception_ = exception; | 135 thread_local_.pending_exception_ = exception; |
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145 thread_local_.pending_message_obj_ = Heap::the_hole_value(); | 150 thread_local_.pending_message_obj_ = Heap::the_hole_value(); |
146 thread_local_.pending_message_script_ = NULL; | 151 thread_local_.pending_message_script_ = NULL; |
147 } | 152 } |
148 static v8::TryCatch* try_catch_handler() { | 153 static v8::TryCatch* try_catch_handler() { |
149 return thread_local_.try_catch_handler_; | 154 return thread_local_.try_catch_handler_; |
150 } | 155 } |
151 // This method is called by the api after operations that may throw | 156 // This method is called by the api after operations that may throw |
152 // exceptions. If an exception was thrown and not handled by an external | 157 // exceptions. If an exception was thrown and not handled by an external |
153 // handler the exception is scheduled to be rethrown when we return to running | 158 // handler the exception is scheduled to be rethrown when we return to running |
154 // JavaScript code. If an exception is scheduled true is returned. | 159 // JavaScript code. If an exception is scheduled true is returned. |
155 static bool optional_reschedule_exception(bool is_bottom_call); | 160 static bool OptionalRescheduleException(bool is_bottom_call, |
| 161 bool force_clear_catchable); |
156 | 162 |
157 static bool* external_caught_exception_address() { | 163 static bool* external_caught_exception_address() { |
158 return &thread_local_.external_caught_exception_; | 164 return &thread_local_.external_caught_exception_; |
159 } | 165 } |
160 | 166 |
161 static Object* scheduled_exception() { | 167 static Object* scheduled_exception() { |
162 ASSERT(has_scheduled_exception()); | 168 ASSERT(has_scheduled_exception()); |
163 return thread_local_.scheduled_exception_; | 169 return thread_local_.scheduled_exception_; |
164 } | 170 } |
165 static bool has_scheduled_exception() { | 171 static bool has_scheduled_exception() { |
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239 static Failure* ReThrow(Object* exception, MessageLocation* location = NULL); | 245 static Failure* ReThrow(Object* exception, MessageLocation* location = NULL); |
240 static void ScheduleThrow(Object* exception); | 246 static void ScheduleThrow(Object* exception); |
241 static void ReportPendingMessages(); | 247 static void ReportPendingMessages(); |
242 static Failure* ThrowIllegalOperation(); | 248 static Failure* ThrowIllegalOperation(); |
243 | 249 |
244 // Promote a scheduled exception to pending. Asserts has_scheduled_exception. | 250 // Promote a scheduled exception to pending. Asserts has_scheduled_exception. |
245 static Object* PromoteScheduledException(); | 251 static Object* PromoteScheduledException(); |
246 static void DoThrow(Object* exception, | 252 static void DoThrow(Object* exception, |
247 MessageLocation* location, | 253 MessageLocation* location, |
248 const char* message); | 254 const char* message); |
249 static bool ShouldReportException(bool* is_caught_externally); | 255 static bool ShouldReturnException(bool* is_caught_externally, |
| 256 bool catchable_by_javascript); |
250 static void ReportUncaughtException(Handle<Object> exception, | 257 static void ReportUncaughtException(Handle<Object> exception, |
251 MessageLocation* location, | 258 MessageLocation* location, |
252 Handle<String> stack_trace); | 259 Handle<String> stack_trace); |
253 | 260 |
254 // Attempts to compute the current source location, storing the | 261 // Attempts to compute the current source location, storing the |
255 // result in the target out parameter. | 262 // result in the target out parameter. |
256 static void ComputeLocation(MessageLocation* target); | 263 static void ComputeLocation(MessageLocation* target); |
257 | 264 |
258 // Override command line flag. | 265 // Override command line flag. |
259 static void TraceException(bool flag); | 266 static void TraceException(bool flag); |
260 | 267 |
261 // Out of resource exception helpers. | 268 // Out of resource exception helpers. |
262 static Failure* StackOverflow(); | 269 static Failure* StackOverflow(); |
| 270 static Failure* TerminateExecution(); |
263 | 271 |
264 // Administration | 272 // Administration |
265 static void Initialize(); | 273 static void Initialize(); |
266 static void TearDown(); | 274 static void TearDown(); |
267 static void Iterate(ObjectVisitor* v); | 275 static void Iterate(ObjectVisitor* v); |
268 static void Iterate(ObjectVisitor* v, ThreadLocalTop* t); | 276 static void Iterate(ObjectVisitor* v, ThreadLocalTop* t); |
269 static char* Iterate(ObjectVisitor* v, char* t); | 277 static char* Iterate(ObjectVisitor* v, char* t); |
270 | 278 |
271 // Returns the global object of the current context. It could be | 279 // Returns the global object of the current context. It could be |
272 // a builtin object, or a js global object. | 280 // a builtin object, or a js global object. |
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397 | 405 |
398 class ExecutionAccess BASE_EMBEDDED { | 406 class ExecutionAccess BASE_EMBEDDED { |
399 public: | 407 public: |
400 ExecutionAccess(); | 408 ExecutionAccess(); |
401 ~ExecutionAccess(); | 409 ~ExecutionAccess(); |
402 }; | 410 }; |
403 | 411 |
404 } } // namespace v8::internal | 412 } } // namespace v8::internal |
405 | 413 |
406 #endif // V8_TOP_H_ | 414 #endif // V8_TOP_H_ |
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