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/*
* Copyright (C) 2012, 2015-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <wtf/HashSet.h>
#include <wtf/Lock.h>
#include <wtf/RefPtr.h>
#include <wtf/RetainPtr.h>
#include <wtf/RunLoop.h>
#include <wtf/SharedTask.h>
#include <wtf/ThreadSafeRefCounted.h>
#if USE(CF)
#include <CoreFoundation/CoreFoundation.h>
#endif
namespace JSC {
class JSLock;
class VM;
class JSRunLoopTimer : public ThreadSafeRefCounted<JSRunLoopTimer> {
public:
typedef void TimerNotificationType();
using TimerNotificationCallback = RefPtr<WTF::SharedTask<TimerNotificationType>>;
JSRunLoopTimer(VM*);
#if USE(CF)
static void timerDidFireCallback(CFRunLoopTimerRef, void*);
#else
void timerDidFireCallback();
#endif
JS_EXPORT_PRIVATE virtual ~JSRunLoopTimer();
virtual void doWork() = 0;
void scheduleTimer(Seconds intervalInSeconds);
void cancelTimer();
bool isScheduled() const { return m_isScheduled; }
// Note: The only thing the timer notification callback cannot do is
// call scheduleTimer(). This will cause a deadlock. It would not
// be hard to make this work, however, there are no clients that need
// this behavior. We should implement it only if we find that we need it.
JS_EXPORT_PRIVATE void addTimerSetNotification(TimerNotificationCallback);
JS_EXPORT_PRIVATE void removeTimerSetNotification(TimerNotificationCallback);
#if USE(CF)
JS_EXPORT_PRIVATE void setRunLoop(CFRunLoopRef);
#endif // USE(CF)
protected:
VM* m_vm;
static const Seconds s_decade;
RefPtr<JSLock> m_apiLock;
bool m_isScheduled { false };
#if USE(CF)
RetainPtr<CFRunLoopTimerRef> m_timer;
RetainPtr<CFRunLoopRef> m_runLoop;
CFRunLoopTimerContext m_context;
Lock m_shutdownMutex;
#else
RunLoop::Timer<JSRunLoopTimer> m_timer;
#endif
Lock m_timerCallbacksLock;
HashSet<TimerNotificationCallback> m_timerSetCallbacks;
private:
void timerDidFire();
};
} // namespace JSC
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