1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* Copyright (C) 2010, 2015 Apple Inc. All rights reserved.
* Portions Copyright (c) 2010 Motorola Mobility, 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#ifndef WorkQueue_h
#define WorkQueue_h
#include <chrono>
#include <functional>
#include <wtf/Forward.h>
#include <wtf/FunctionDispatcher.h>
#include <wtf/RefCounted.h>
#include <wtf/Threading.h>
#if OS(DARWIN) && !PLATFORM(GTK)
#include <dispatch/dispatch.h>
#endif
#if PLATFORM(GTK)
#include <wtf/Condition.h>
#include <wtf/RunLoop.h>
#include <wtf/glib/GRefPtr.h>
#elif PLATFORM(EFL)
#include <DispatchQueueEfl.h>
#elif PLATFORM(QT) && USE(UNIX_DOMAIN_SOCKETS)
#include <QSocketNotifier>
#elif OS(WINDOWS)
#include <wtf/HashMap.h>
#include <wtf/Vector.h>
#include <wtf/win/WorkItemWin.h>
#endif
#if PLATFORM(QT) && USE(UNIX_DOMAIN_SOCKETS)
QT_BEGIN_NAMESPACE
class QProcess;
QT_END_NAMESPACE
#endif
namespace WTF {
class WorkQueue final : public FunctionDispatcher {
public:
enum class Type {
Serial,
Concurrent
};
enum class QOS {
UserInteractive,
UserInitiated,
Default,
Utility,
Background
};
WTF_EXPORT_PRIVATE static Ref<WorkQueue> create(const char* name, Type = Type::Serial, QOS = QOS::Default);
virtual ~WorkQueue();
WTF_EXPORT_PRIVATE virtual void dispatch(std::function<void ()>) override;
WTF_EXPORT_PRIVATE void dispatchAfter(std::chrono::nanoseconds, std::function<void ()>);
WTF_EXPORT_PRIVATE static void concurrentApply(size_t iterations, const std::function<void (size_t index)>&);
#if PLATFORM(GTK)
RunLoop& runLoop() const { return *m_runLoop; }
#elif PLATFORM(EFL)
void registerSocketEventHandler(int, std::function<void ()>);
void unregisterSocketEventHandler(int);
#elif PLATFORM(QT) && USE(UNIX_DOMAIN_SOCKETS)
QSocketNotifier* registerSocketEventHandler(int, QSocketNotifier::Type, std::function<void()>);
void dispatchOnTermination(QProcess*, std::function<void()>);
#elif PLATFORM(QT) && OS(WINDOWS)
void registerHandle(HANDLE, const std::function<void()>&);
void unregisterAndCloseHandle(HANDLE);
#elif OS(DARWIN)
dispatch_queue_t dispatchQueue() const { return m_dispatchQueue; }
#endif
private:
explicit WorkQueue(const char* name, Type, QOS);
void platformInitialize(const char* name, Type, QOS);
void platformInvalidate();
#if PLATFORM(WIN) || (PLATFORM(QT) && OS(WINDOWS))
static void CALLBACK handleCallback(void* context, BOOLEAN timerOrWaitFired);
static void CALLBACK timerCallback(void* context, BOOLEAN timerOrWaitFired);
static DWORD WINAPI workThreadCallback(void* context);
bool tryRegisterAsWorkThread();
void unregisterAsWorkThread();
void performWorkOnRegisteredWorkThread();
static void unregisterWaitAndDestroyItemSoon(PassRefPtr<HandleWorkItem>);
static DWORD WINAPI unregisterWaitAndDestroyItemCallback(void* context);
#endif
#if PLATFORM(GTK)
ThreadIdentifier m_workQueueThread;
Lock m_initializeRunLoopConditionMutex;
Condition m_initializeRunLoopCondition;
RunLoop* m_runLoop;
Lock m_terminateRunLoopConditionMutex;
Condition m_terminateRunLoopCondition;
#elif PLATFORM(EFL)
RefPtr<DispatchQueue> m_dispatchQueue;
#elif PLATFORM(QT) && USE(UNIX_DOMAIN_SOCKETS)
class WorkItemQt;
QThread* m_workThread;
friend class WorkItemQt;
#elif OS(DARWIN)
static void executeFunction(void*);
dispatch_queue_t m_dispatchQueue;
#elif OS(WINDOWS)
volatile LONG m_isWorkThreadRegistered;
Mutex m_workItemQueueLock;
Vector<RefPtr<WorkItemWin>> m_workItemQueue;
Mutex m_handlesLock;
HashMap<HANDLE, RefPtr<HandleWorkItem>> m_handles;
HANDLE m_timerQueue;
#endif
};
}
using WTF::WorkQueue;
#endif
|
