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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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3081 { | 3081 { |
3082 v8::Unlocker unlocker; | 3082 v8::Unlocker unlocker; |
3083 Thread::YieldCPU(); | 3083 Thread::YieldCPU(); |
3084 } | 3084 } |
3085 | 3085 |
3086 return Heap::undefined_value(); | 3086 return Heap::undefined_value(); |
3087 } | 3087 } |
3088 | 3088 |
3089 | 3089 |
3090 static Object* Runtime_DebugBreak(Arguments args) { | 3090 static Object* Runtime_DebugBreak(Arguments args) { |
3091 // Just continue if breaks are disabled or if we fail to load the debugger. | 3091 // Just continue if breaks are disabled. |
3092 if (Debug::disable_break() || !Debug::Load()) { | 3092 if (Debug::disable_break()) { |
3093 return args[0]; | 3093 return args[0]; |
3094 } | 3094 } |
3095 | 3095 |
3096 // Don't break in system functions. If the current function is | 3096 // Don't break in system functions. If the current function is |
3097 // either in the builtins object of some context or is in the debug | 3097 // either in the builtins object of some context or is in the debug |
3098 // context just return with the debug break stack guard active. | 3098 // context just return with the debug break stack guard active. |
3099 JavaScriptFrameIterator it; | 3099 JavaScriptFrameIterator it; |
3100 JavaScriptFrame* frame = it.frame(); | 3100 JavaScriptFrame* frame = it.frame(); |
3101 Object* fun = frame->function(); | 3101 Object* fun = frame->function(); |
3102 if (fun->IsJSFunction()) { | 3102 if (fun->IsJSFunction()) { |
3103 GlobalObject* global = JSFunction::cast(fun)->context()->global(); | 3103 GlobalObject* global = JSFunction::cast(fun)->context()->global(); |
3104 if (global->IsJSBuiltinsObject() || Debug::IsDebugGlobal(global)) { | 3104 if (global->IsJSBuiltinsObject() || Debug::IsDebugGlobal(global)) { |
3105 return args[0]; | 3105 return args[0]; |
3106 } | 3106 } |
3107 } | 3107 } |
3108 | 3108 |
3109 // Clear the debug request flag. | 3109 // Clear the debug request flag. |
3110 StackGuard::Continue(DEBUGBREAK); | 3110 StackGuard::Continue(DEBUGBREAK); |
3111 | 3111 |
3112 HandleScope scope; | 3112 HandleScope scope; |
3113 SaveBreakFrame save; | 3113 // Enter the debugger. Just continue if we fail to enter the debugger. |
3114 EnterDebuggerContext enter; | 3114 EnterDebugger debugger; |
| 3115 if (debugger.FailedToEnter()) { |
| 3116 return args[0]; |
| 3117 } |
3115 | 3118 |
3116 // Notify the debug event listeners. | 3119 // Notify the debug event listeners. |
3117 Debugger::OnDebugBreak(Factory::undefined_value()); | 3120 Debugger::OnDebugBreak(Factory::undefined_value()); |
3118 | 3121 |
3119 // Return to continue execution. | 3122 // Return to continue execution. |
3120 return args[0]; | 3123 return args[0]; |
3121 } | 3124 } |
3122 | 3125 |
3123 | 3126 |
3124 static Object* Runtime_StackGuard(Arguments args) { | 3127 static Object* Runtime_StackGuard(Arguments args) { |
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5016 | 5019 |
5017 void Runtime::PerformGC(Object* result) { | 5020 void Runtime::PerformGC(Object* result) { |
5018 Failure* failure = Failure::cast(result); | 5021 Failure* failure = Failure::cast(result); |
5019 // Try to do a garbage collection; ignore it if it fails. The C | 5022 // Try to do a garbage collection; ignore it if it fails. The C |
5020 // entry stub will throw an out-of-memory exception in that case. | 5023 // entry stub will throw an out-of-memory exception in that case. |
5021 Heap::CollectGarbage(failure->requested(), failure->allocation_space()); | 5024 Heap::CollectGarbage(failure->requested(), failure->allocation_space()); |
5022 } | 5025 } |
5023 | 5026 |
5024 | 5027 |
5025 } } // namespace v8::internal | 5028 } } // namespace v8::internal |
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