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31 #ifndef WorkerScriptController_h
32 #define WorkerScriptController_h
36 #include "ScopedDOMDataStore.h"
37 #include "V8Binding.h"
40 #include <wtf/OwnPtr.h>
41 #include <wtf/Threading.h>
45 class ScriptSourceCode;
48 class WorkerContextExecutionProxy;
50 class WorkerScriptController {
52 WorkerScriptController(WorkerContext*);
53 ~WorkerScriptController();
55 WorkerContextExecutionProxy* proxy() { return m_proxy.get(); }
56 WorkerContext* workerContext() { return m_workerContext; }
58 ScriptValue evaluate(const ScriptSourceCode&);
59 ScriptValue evaluate(const ScriptSourceCode&, ScriptValue* exception);
61 void setException(ScriptValue);
63 // Async request to terminate a future JS execution. Eventually causes termination
64 // exception raised during JS execution, if the worker thread happens to run JS.
65 // After JS execution was terminated in this way, the Worker thread has to use
66 // forbidExecution()/isExecutionForbidden() to guard against reentry into JS.
67 // Can be called from any thread.
68 void scheduleExecutionTermination();
70 // Called on Worker thread when JS exits with termination exception caused by forbidExecution() request,
71 // or by Worker thread termination code to prevent future entry into JS.
72 void forbidExecution();
73 bool isExecutionForbidden() const;
75 // Returns WorkerScriptController for the currently executing context. 0 will be returned if the current executing context is not the worker context.
76 static WorkerScriptController* controllerForContext();
79 WorkerContext* m_workerContext;
80 OwnPtr<WorkerContextExecutionProxy> m_proxy;
81 v8::Isolate* m_isolate;
82 ScopedDOMDataStore m_DOMDataStore;
83 bool m_executionForbidden;
86 } // namespace WebCore
88 #endif // ENABLE(WORKERS)
90 #endif // WorkerScriptController_h