1/*
2 * Copyright (C) 2006-2016 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef SharedTimer_h
27#define SharedTimer_h
28
29#include <wtf/FastMalloc.h>
30#include <wtf/Function.h>
31#include <wtf/Noncopyable.h>
32#include <wtf/Seconds.h>
33
34namespace WebCore {
35
36// Each thread has its own single instance of shared timer, which implements this interface.
37// This instance is shared by all timers in the thread.
38// Not intended to be used directly; use the Timer class instead.
39class SharedTimer {
40 WTF_MAKE_NONCOPYABLE(SharedTimer); WTF_MAKE_FAST_ALLOCATED;
41public:
42 SharedTimer() = default;
43 virtual ~SharedTimer() = default;
44 virtual void setFiredFunction(WTF::Function<void()>&&) = 0;
45
46 // The fire interval is in seconds relative to the current monotonic clock time.
47 virtual void setFireInterval(Seconds) = 0;
48 virtual void stop() = 0;
49
50 virtual void invalidate() { }
51};
52
53} // namespace WebCore
54
55#endif // SharedTimer_h
56