1/*
2 * Copyright (C) 2008, 2013 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 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 <wtf/HashSet.h>
33#include <wtf/RefCounted.h>
34#include <wtf/RetainPtr.h>
35#include <wtf/text/StringHash.h>
36#include <wtf/text/WTFString.h>
37
38#if USE(FOUNDATION)
39OBJC_CLASS NSRunLoop;
40#endif
41
42namespace WTF {
43
44class SchedulePair : public RefCounted<SchedulePair> {
45public:
46    static PassRefPtr<SchedulePair> create(CFRunLoopRef runLoop, CFStringRef mode) { return adoptRef(new SchedulePair(runLoop, mode)); }
47
48#if USE(FOUNDATION) && !USE(CFNETWORK)
49    static PassRefPtr<SchedulePair> create(NSRunLoop* runLoop, CFStringRef mode) { return adoptRef(new SchedulePair(runLoop, mode)); }
50    NSRunLoop* nsRunLoop() const { return m_nsRunLoop.get(); }
51#endif
52
53    CFRunLoopRef runLoop() const { return m_runLoop.get(); }
54    CFStringRef mode() const { return m_mode.get(); }
55
56    WTF_EXPORT_PRIVATE bool operator==(const SchedulePair& other) const;
57
58private:
59    SchedulePair(CFRunLoopRef runLoop, CFStringRef mode)
60        : m_runLoop(runLoop)
61    {
62        if (mode)
63            m_mode = adoptCF(CFStringCreateCopy(0, mode));
64    }
65
66#if USE(FOUNDATION) && !USE(CFNETWORK)
67    WTF_EXPORT_PRIVATE SchedulePair(NSRunLoop*, CFStringRef);
68    RetainPtr<NSRunLoop*> m_nsRunLoop;
69#endif
70
71    RetainPtr<CFRunLoopRef> m_runLoop;
72    RetainPtr<CFStringRef> m_mode;
73};
74
75struct SchedulePairHash {
76    static unsigned hash(const RefPtr<SchedulePair>& pair)
77    {
78        uintptr_t hashCodes[2] = { reinterpret_cast<uintptr_t>(pair->runLoop()), pair->mode() ? CFHash(pair->mode()) : 0 };
79        return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
80    }
81
82    static bool equal(const RefPtr<SchedulePair>& a, const RefPtr<SchedulePair>& b) { return a == b; }
83
84    static const bool safeToCompareToEmptyOrDeleted = true;
85};
86
87typedef HashSet<RefPtr<SchedulePair>, SchedulePairHash> SchedulePairHashSet;
88
89} // namespace WTF
90
91using WTF::SchedulePair;
92using WTF::SchedulePairHashSet;
93
94#endif
95