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Issue 12945: Pull out revision 915 and 916 to get a green builder. I believe the... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 12 years ago
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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 // Top has static variables used for JavaScript execution. 39 // Top has static variables used for JavaScript execution.
40 40
41 class SaveContext; // Forward decleration. 41 class SaveContext; // Forward decleration.
42 42
43 class ThreadLocalTop BASE_EMBEDDED { 43 class ThreadLocalTop BASE_EMBEDDED {
44 public: 44 public:
45 // The context where the current execution method is created and for variable 45 // The context where the current execution method is created and for variable
46 // lookups. 46 // lookups.
47 Context* context_; 47 Context* context_;
48 Object* pending_exception_; 48 Object* pending_exception_;
49 const char* pending_message_;
50 Object* pending_message_obj_;
51 Script* pending_message_script_;
52 int pending_message_start_pos_;
53 int pending_message_end_pos_;
54 // Use a separate value for scheduled exceptions to preserve the 49 // Use a separate value for scheduled exceptions to preserve the
55 // invariants that hold about pending_exception. We may want to 50 // invariants that hold about pending_exception. We may want to
56 // unify them later. 51 // unify them later.
57 Object* scheduled_exception_; 52 Object* scheduled_exception_;
58 bool external_caught_exception_; 53 bool external_caught_exception_;
59 v8::TryCatch* try_catch_handler_; 54 v8::TryCatch* try_catch_handler_;
60 SaveContext* save_context_; 55 SaveContext* save_context_;
61 v8::TryCatch* catcher_; 56 v8::TryCatch* catcher_;
62 57
63 // Stack. 58 // Stack.
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118 static void clear_pending_exception() { 113 static void clear_pending_exception() {
119 thread_local_.pending_exception_ = Heap::the_hole_value(); 114 thread_local_.pending_exception_ = Heap::the_hole_value();
120 } 115 }
121 116
122 static Object** pending_exception_address() { 117 static Object** pending_exception_address() {
123 return &thread_local_.pending_exception_; 118 return &thread_local_.pending_exception_;
124 } 119 }
125 static bool has_pending_exception() { 120 static bool has_pending_exception() {
126 return !thread_local_.pending_exception_->IsTheHole(); 121 return !thread_local_.pending_exception_->IsTheHole();
127 } 122 }
128 static void clear_pending_message() {
129 thread_local_.catcher_ = NULL;
130 thread_local_.pending_message_ = NULL;
131 thread_local_.pending_message_obj_ = Heap::the_hole_value();
132 thread_local_.pending_message_script_ = NULL;
133 }
134 static v8::TryCatch* try_catch_handler() { 123 static v8::TryCatch* try_catch_handler() {
135 return thread_local_.try_catch_handler_; 124 return thread_local_.try_catch_handler_;
136 } 125 }
137 // This method is called by the api after operations that may throw 126 // This method is called by the api after operations that may throw
138 // exceptions. If an exception was thrown and not handled by an external 127 // exceptions. If an exception was thrown and not handled by an external
139 // handler the exception is scheduled to be rethrown when we return to running 128 // handler the exception is scheduled to be rethrown when we return to running
140 // JavaScript code. If an exception is scheduled true is returned. 129 // JavaScript code. If an exception is scheduled true is returned.
141 static bool optional_reschedule_exception(bool is_bottom_call); 130 static bool optional_reschedule_exception(bool is_bottom_call);
142 131
143 static bool* external_caught_exception_address() { 132 static bool* external_caught_exception_address() {
144 return &thread_local_.external_caught_exception_; 133 return &thread_local_.external_caught_exception_;
145 } 134 }
146 135
147 static Object* scheduled_exception() { 136 static Object* scheduled_exception() {
148 ASSERT(has_scheduled_exception()); 137 ASSERT(has_scheduled_exception());
149 return thread_local_.scheduled_exception_; 138 return thread_local_.scheduled_exception_;
150 } 139 }
151 static bool has_scheduled_exception() { 140 static bool has_scheduled_exception() {
152 return !thread_local_.scheduled_exception_->IsTheHole(); 141 return !thread_local_.scheduled_exception_->IsTheHole();
153 } 142 }
154 static void clear_scheduled_exception() { 143 static void clear_scheduled_exception() {
155 thread_local_.scheduled_exception_ = Heap::the_hole_value(); 144 thread_local_.scheduled_exception_ = Heap::the_hole_value();
156 } 145 }
157 146
158 static void setup_external_caught() { 147 static void setup_external_caught() {
159 thread_local_.external_caught_exception_ = 148 thread_local_.external_caught_exception_ =
160 (!thread_local_.pending_exception_->IsTheHole()) &&
161 (thread_local_.catcher_ != NULL) && 149 (thread_local_.catcher_ != NULL) &&
162 (Top::thread_local_.try_catch_handler_ == Top::thread_local_.catcher_); 150 (Top::thread_local_.try_catch_handler_ == Top::thread_local_.catcher_);
163 } 151 }
164 152
165 // Tells whether the current context has experienced an out of memory 153 // Tells whether the current context has experienced an out of memory
166 // exception. 154 // exception.
167 static bool is_out_of_memory(); 155 static bool is_out_of_memory();
168 156
169 // JS execution stack (see frames.h). 157 // JS execution stack (see frames.h).
170 static Address c_entry_fp(ThreadLocalTop* thread) { 158 static Address c_entry_fp(ThreadLocalTop* thread) {
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212 static void ReportFailedAccessCheck(JSObject* receiver, v8::AccessType type); 200 static void ReportFailedAccessCheck(JSObject* receiver, v8::AccessType type);
213 201
214 // Exception throwing support. The caller should use the result 202 // Exception throwing support. The caller should use the result
215 // of Throw() as its return value. 203 // of Throw() as its return value.
216 static Failure* Throw(Object* exception, MessageLocation* location = NULL); 204 static Failure* Throw(Object* exception, MessageLocation* location = NULL);
217 // Re-throw an exception. This involves no error reporting since 205 // Re-throw an exception. This involves no error reporting since
218 // error reporting was handled when the exception was thrown 206 // error reporting was handled when the exception was thrown
219 // originally. 207 // originally.
220 static Failure* ReThrow(Object* exception, MessageLocation* location = NULL); 208 static Failure* ReThrow(Object* exception, MessageLocation* location = NULL);
221 static void ScheduleThrow(Object* exception); 209 static void ScheduleThrow(Object* exception);
222 static void ReportPendingMessages();
223 210
224 // Promote a scheduled exception to pending. Asserts has_scheduled_exception. 211 // Promote a scheduled exception to pending. Asserts has_scheduled_exception.
225 static Object* PromoteScheduledException(); 212 static Object* PromoteScheduledException();
226 static void DoThrow(Object* exception, 213 static void DoThrow(Object* exception,
227 MessageLocation* location, 214 MessageLocation* location,
228 const char* message); 215 const char* message);
229 static bool ShouldReportException(bool* is_caught_externally); 216 static bool ShouldReportException(bool* is_caught_externally);
230 static void ReportUncaughtException(Handle<Object> exception, 217 static void ReportUncaughtException(Handle<Object> exception,
231 MessageLocation* location, 218 MessageLocation* location,
232 Handle<String> stack_trace); 219 Handle<String> stack_trace);
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379 366
380 class ExecutionAccess BASE_EMBEDDED { 367 class ExecutionAccess BASE_EMBEDDED {
381 public: 368 public:
382 ExecutionAccess(); 369 ExecutionAccess();
383 ~ExecutionAccess(); 370 ~ExecutionAccess();
384 }; 371 };
385 372
386 } } // namespace v8::internal 373 } } // namespace v8::internal
387 374
388 #endif // V8_TOP_H_ 375 #endif // V8_TOP_H_
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