1/*
2 * Copyright (C) 2008 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 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef SchedulePair_h
30#define SchedulePair_h
31
32#include "PlatformString.h"
33#include <wtf/HashSet.h>
34#include <wtf/RetainPtr.h>
35
36#if PLATFORM(MAC)
37#ifdef __OBJC__
38@class NSRunLoop;
39#else
40class NSRunLoop;
41#endif
42#endif
43
44namespace WebCore {
45
46class SchedulePair : public RefCounted<SchedulePair> {
47public:
48    static PassRefPtr<SchedulePair> create(CFRunLoopRef runLoop, CFStringRef mode) { return adoptRef(new SchedulePair(runLoop, mode)); }
49
50#if PLATFORM(MAC)
51    static PassRefPtr<SchedulePair> create(NSRunLoop* runLoop, CFStringRef mode) { return adoptRef(new SchedulePair(runLoop, mode)); }
52    NSRunLoop* nsRunLoop() const { return m_nsRunLoop.get(); }
53#endif
54
55    CFRunLoopRef runLoop() const { return m_runLoop.get(); }
56    CFStringRef mode() const { return m_mode.get(); }
57
58    bool operator==(const SchedulePair& other) const;
59
60private:
61    SchedulePair(CFRunLoopRef, CFStringRef);
62
63#if PLATFORM(MAC)
64    SchedulePair(NSRunLoop*, CFStringRef);
65    RetainPtr<NSRunLoop*> m_nsRunLoop;
66#endif
67
68    RetainPtr<CFRunLoopRef> m_runLoop;
69    RetainPtr<CFStringRef> m_mode;
70};
71
72struct SchedulePairHash {
73    static unsigned hash(const RefPtr<SchedulePair>& pair)
74    {
75        uintptr_t hashCodes[2] = { reinterpret_cast<uintptr_t>(pair->runLoop()), pair->mode() ? CFHash(pair->mode()) : 0 };
76        return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
77    }
78
79    static bool equal(const RefPtr<SchedulePair>& a, const RefPtr<SchedulePair>& b) { return a == b; }
80
81    static const bool safeToCompareToEmptyOrDeleted = true;
82};
83
84typedef HashSet<RefPtr<SchedulePair>, SchedulePairHash> SchedulePairHashSet;
85
86} // namespace WebCore
87
88#endif
89