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1 /* | 1 /* |
2 * Copyright (C) 2009, 2012 Google Inc. All rights reserved. | 2 * Copyright (C) 2009, 2012 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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34 #include "bindings/core/v8/ScriptValue.h" | 34 #include "bindings/core/v8/ScriptValue.h" |
35 #include "bindings/core/v8/V8Binding.h" | 35 #include "bindings/core/v8/V8Binding.h" |
36 #include "wtf/OwnPtr.h" | 36 #include "wtf/OwnPtr.h" |
37 #include "wtf/ThreadingPrimitives.h" | 37 #include "wtf/ThreadingPrimitives.h" |
38 #include "wtf/text/TextPosition.h" | 38 #include "wtf/text/TextPosition.h" |
39 #include <v8.h> | 39 #include <v8.h> |
40 | 40 |
41 namespace WebCore { | 41 namespace WebCore { |
42 | 42 |
43 class ErrorEvent; | 43 class ErrorEvent; |
44 class ExceptionState; | |
44 class ScriptSourceCode; | 45 class ScriptSourceCode; |
45 class ScriptValue; | 46 class ScriptValue; |
46 class WorkerGlobalScope; | 47 class WorkerGlobalScope; |
47 | 48 class WorkerGlobalScopeExecutionState; |
48 struct WorkerGlobalScopeExecutionState { | |
49 WorkerGlobalScopeExecutionState() | |
50 : hadException(false) | |
51 , lineNumber(0) | |
52 , columnNumber(0) | |
53 { | |
54 } | |
55 | |
56 bool hadException; | |
57 String errorMessage; | |
58 int lineNumber; | |
59 int columnNumber; | |
60 String sourceURL; | |
61 ScriptValue exception; | |
62 }; | |
63 | 49 |
64 class WorkerScriptController { | 50 class WorkerScriptController { |
65 public: | 51 public: |
66 explicit WorkerScriptController(WorkerGlobalScope&); | 52 explicit WorkerScriptController(WorkerGlobalScope&); |
67 ~WorkerScriptController(); | 53 ~WorkerScriptController(); |
68 | 54 |
69 WorkerGlobalScope& workerGlobalScope() { return m_workerGlobalScope; } | 55 WorkerGlobalScope& workerGlobalScope() { return m_workerGlobalScope; } |
70 | 56 |
71 bool initializeContextIfNeeded(); | 57 bool initializeContextIfNeeded(); |
72 | 58 |
73 void evaluate(const ScriptSourceCode&, RefPtrWillBeRawPtr<ErrorEvent>* = 0); | 59 void evaluate(const ScriptSourceCode&, RefPtrWillBeRawPtr<ErrorEvent>* = 0); |
74 | 60 |
75 void rethrowExceptionFromImportedScript(PassRefPtrWillBeRawPtr<ErrorEvent>); | 61 void rethrowExceptionFromImportedScript(PassRefPtrWillBeRawPtr<ErrorEvent>, ExceptionState&); |
76 | 62 |
77 // Async request to terminate a future JS execution. Eventually causes termi nation | 63 // Async request to terminate a future JS execution. Eventually causes termi nation |
78 // exception raised during JS execution, if the worker thread happens to run JS. | 64 // exception raised during JS execution, if the worker thread happens to run JS. |
79 // After JS execution was terminated in this way, the Worker thread has to u se | 65 // After JS execution was terminated in this way, the Worker thread has to u se |
80 // forbidExecution()/isExecutionForbidden() to guard against reentry into JS . | 66 // forbidExecution()/isExecutionForbidden() to guard against reentry into JS . |
81 // Can be called from any thread. | 67 // Can be called from any thread. |
82 void scheduleExecutionTermination(); | 68 void scheduleExecutionTermination(); |
83 bool isExecutionTerminating() const; | 69 bool isExecutionTerminating() const; |
84 | 70 |
85 // Called on Worker thread when JS exits with termination exception caused b y forbidExecution() request, | 71 // Called on Worker thread when JS exits with termination exception caused b y forbidExecution() request, |
86 // or by Worker thread termination code to prevent future entry into JS. | 72 // or by Worker thread termination code to prevent future entry into JS. |
87 void forbidExecution(); | 73 void forbidExecution(); |
88 bool isExecutionForbidden() const; | 74 bool isExecutionForbidden() const; |
89 | 75 |
90 void disableEval(const String&); | 76 void disableEval(const String&); |
91 | 77 |
92 // Evaluate a script file in the current execution environment. | |
93 ScriptValue evaluate(const String& script, const String& fileName, const Tex tPosition& scriptStartPosition, WorkerGlobalScopeExecutionState*); | |
94 | |
95 v8::Isolate* isolate() const { return m_isolate; } | 78 v8::Isolate* isolate() const { return m_isolate; } |
96 DOMWrapperWorld& world() const { return *m_world; } | 79 DOMWrapperWorld& world() const { return *m_world; } |
97 ScriptState* scriptState() { return m_scriptState.get(); } | 80 ScriptState* scriptState() { return m_scriptState.get(); } |
98 v8::Local<v8::Context> context() { return m_scriptState ? m_scriptState->con text() : v8::Local<v8::Context>(); } | 81 v8::Local<v8::Context> context() { return m_scriptState ? m_scriptState->con text() : v8::Local<v8::Context>(); } |
99 bool isContextInitialized() { return m_scriptState && !!m_scriptState->perCo ntextData(); } | 82 bool isContextInitialized() { return m_scriptState && !!m_scriptState->perCo ntextData(); } |
100 | 83 |
101 // Send a notification about current thread is going to be idle. | 84 // Send a notification about current thread is going to be idle. |
102 // Returns true if the embedder should stop calling idleNotification | 85 // Returns true if the embedder should stop calling idleNotification |
103 // until real work has been done. | 86 // until real work has been done. |
104 bool idleNotification() { return v8::V8::IdleNotification(); } | 87 bool idleNotification() { return v8::V8::IdleNotification(); } |
105 | 88 |
89 private: | |
90 class WorkerGlobalScopeExecutionState; | |
106 | 91 |
107 private: | 92 // Evaluate a script file in the current execution environment. |
93 ScriptValue evaluate(const String& script, const String& fileName, const Tex tPosition& scriptStartPosition); | |
94 | |
108 v8::Isolate* m_isolate; | 95 v8::Isolate* m_isolate; |
109 WorkerGlobalScope& m_workerGlobalScope; | 96 WorkerGlobalScope& m_workerGlobalScope; |
110 RefPtr<ScriptState> m_scriptState; | 97 RefPtr<ScriptState> m_scriptState; |
111 RefPtr<DOMWrapperWorld> m_world; | 98 RefPtr<DOMWrapperWorld> m_world; |
112 String m_disableEvalPending; | 99 String m_disableEvalPending; |
113 bool m_executionForbidden; | 100 bool m_executionForbidden; |
114 bool m_executionScheduledToTerminate; | 101 bool m_executionScheduledToTerminate; |
115 mutable Mutex m_scheduledTerminationMutex; | 102 mutable Mutex m_scheduledTerminationMutex; |
116 RefPtrWillBePersistent<ErrorEvent> m_errorEventFromImportedScript; | 103 WorkerGlobalScopeExecutionState* m_globalScopeExecutionState; |
haraken
2014/07/18 01:12:38
Shall we add a comment about why we don't need to
sof
2014/07/18 07:00:46
Good idea; tried to explain.
| |
117 OwnPtr<V8IsolateInterruptor> m_interruptor; | 104 OwnPtr<V8IsolateInterruptor> m_interruptor; |
118 }; | 105 }; |
119 | 106 |
120 } // namespace WebCore | 107 } // namespace WebCore |
121 | 108 |
122 #endif // WorkerScriptController_h | 109 #endif // WorkerScriptController_h |
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