Chameleon

Chameleon Svn Source Tree

Root/branches/xZenu/src/util/doxygen/qtools/qthread_win32.cpp

Source at commit 1322 created 9 years 5 months ago.
By meklort, Add doxygen to utils folder
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Nokia Corporation (qt-info@nokia.com)
5**
6** This file is part of the QtCore module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** No Commercial Usage
10** This file contains pre-release code and may not be distributed.
11** You may use this file in accordance with the terms and conditions
12** contained in the either Technology Preview License Agreement or the
13** Beta Release License Agreement.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you are unsure which license is appropriate for your use, please
37** contact the sales department at http://www.qtsoftware.com/contact.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qthread.h"
43#include "qthread_p.h"
44
45/**************************************************************************
46 ** QThreadPrivate
47 *************************************************************************/
48
49QThreadPrivate::QThreadPrivate() :
50 running(FALSE), finished(FALSE), terminated(FALSE), stackSize(0)
51{
52 handle = NULL;
53 waiters = 0;
54}
55
56QThreadPrivate::~QThreadPrivate()
57{
58}
59
60unsigned int __stdcall QThreadPrivate::start(void *arg)
61{
62 QThread *thr = reinterpret_cast<QThread *>(arg);
63 thr->started();
64 thr->run();
65 finish(arg);
66 return 0;
67}
68
69void QThreadPrivate::finish(void *arg,bool lockAnyway)
70{
71 QThread *thr = reinterpret_cast<QThread *>(arg);
72 QThreadPrivate *d = thr->d;
73
74 if (lockAnyway) d->mutex.lock();
75
76 d->running = FALSE;
77 d->finished = TRUE;
78 if (d->terminated) thr->terminated();
79 d->terminated = FALSE;
80 thr->finished();
81
82 if (!d->waiters)
83 {
84 CloseHandle(d->handle);
85 d->handle = 0;
86 }
87
88 if (lockAnyway) d->mutex.unlock();
89}
90
91/**************************************************************************
92 ** QThread
93 *************************************************************************/
94
95void QThread::start()
96{
97 QMutexLocker locker(&d->mutex);
98
99 if (d->running) return;
100
101 d->running = TRUE;
102 d->finished = FALSE;
103 d->terminated = FALSE;
104
105 d->handle = CreateThread(NULL,d->stackSize,
106 (LPTHREAD_START_ROUTINE)QThreadPrivate::start,this,0,NULL);
107
108 if (!d->handle)
109 {
110 qWarning("QThread::start: Failed to create thread: errno=%d",errno);
111 d->running = FALSE;
112 d->finished = TRUE;
113 return;
114 }
115}
116
117void QThread::terminate()
118{
119 QMutexLocker locker(&d->mutex);
120 if (!d->running) return;
121 TerminateThread(d->handle, 0);
122 d->terminated = TRUE;
123 QThreadPrivate::finish(this);
124}
125
126void QThread::wait()
127{
128 QMutexLocker locker(&d->mutex);
129 if (d->finished || !d->running) return;
130
131 ++d->waiters;
132 locker.mutex()->unlock();
133
134 WaitForSingleObject(d->handle,INFINITE);
135
136 locker.mutex()->lock();
137 --d->waiters;
138 if (!d->finished) // thread was terminated by someone else
139 {
140 d->terminated = TRUE;
141 QThreadPrivate::finish(this);
142 }
143
144 if (d->finished && d->waiters)
145 {
146 CloseHandle(d->handle);
147 d->handle = 0;
148 }
149}
150
151int QThread::idealThreadCount()
152{
153 SYSTEM_INFO sysinfo;
154 GetSystemInfo(&sysinfo);
155 return sysinfo.dwNumberOfProcessors;
156}
157
158
159

Archive Download this file

Revision: 1322