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#ifndef WorkerScriptController_h
#define WorkerScriptController_h
#include "bindings/v8/ScriptValue.h"
#include "bindings/v8/V8Binding.h"
#include "core/events/ErrorEvent.h"
#include "wtf/OwnPtr.h"
#include "wtf/ThreadingPrimitives.h"
#include "wtf/text/TextPosition.h"
#include <v8.h>
namespace WebCore {
class ScriptSourceCode;
class ScriptValue;
class WorkerGlobalScope;
struct WorkerGlobalScopeExecutionState {
WorkerGlobalScopeExecutionState()
: hadException(false)
, lineNumber(0)
, columnNumber(0)
{
}
bool hadException;
String errorMessage;
int lineNumber;
int columnNumber;
String sourceURL;
ScriptValue exception;
};
class WorkerScriptController {
public:
explicit WorkerScriptController(WorkerGlobalScope&);
~WorkerScriptController();
WorkerGlobalScope& workerGlobalScope() { return m_workerGlobalScope; }
void evaluate(const ScriptSourceCode&, RefPtrWillBeRawPtr<ErrorEvent>* = 0);
void rethrowExceptionFromImportedScript(PassRefPtrWillBeRawPtr<ErrorEvent>);
// Async request to terminate a future JS execution. Eventually causes termination
// exception raised during JS execution, if the worker thread happens to run JS.
// After JS execution was terminated in this way, the Worker thread has to use
// forbidExecution()/isExecutionForbidden() to guard against reentry into JS.
// Can be called from any thread.
void scheduleExecutionTermination();
bool isExecutionTerminating() const;
// Called on Worker thread when JS exits with termination exception caused by forbidExecution() request,
// or by Worker thread termination code to prevent future entry into JS.
void forbidExecution();
bool isExecutionForbidden() const;
void disableEval(const String&);
// Evaluate a script file in the current execution environment.
ScriptValue evaluate(const String& script, const String& fileName, const TextPosition& scriptStartPosition, WorkerGlobalScopeExecutionState*);
v8::Isolate* isolate() const { return m_isolate; }
DOMWrapperWorld& world() const { return *m_world; }
v8::Local<v8::Context> context() { return m_scriptState ? m_scriptState->context() : v8::Local<v8::Context>(); }
bool isContextInitialized() { return m_scriptState && !!m_scriptState->perContextData(); }
// Send a notification about current thread is going to be idle.
// Returns true if the embedder should stop calling idleNotification
// until real work has been done.
bool idleNotification() { return v8::V8::IdleNotification(); }
private:
bool initializeContextIfNeeded();
v8::Isolate* m_isolate;
WorkerGlobalScope& m_workerGlobalScope;
RefPtr<NewScriptState> m_scriptState;
RefPtr<DOMWrapperWorld> m_world;
String m_disableEvalPending;
bool m_executionForbidden;
bool m_executionScheduledToTerminate;
mutable Mutex m_scheduledTerminationMutex;
RefPtrWillBePersistent<ErrorEvent> m_errorEventFromImportedScript;
OwnPtr<V8IsolateInterruptor> m_interruptor;
};
} // namespace WebCore
#endif // WorkerScriptController_h