Root/
| Source at commit 1322 created 12 years 8 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 | ␊ |
| 49 | QThreadPrivate::QThreadPrivate() :␊ |
| 50 | running(FALSE), finished(FALSE), terminated(FALSE), stackSize(0)␊ |
| 51 | {␊ |
| 52 | handle = NULL;␊ |
| 53 | waiters = 0;␊ |
| 54 | }␊ |
| 55 | ␊ |
| 56 | QThreadPrivate::~QThreadPrivate()␊ |
| 57 | {␊ |
| 58 | }␊ |
| 59 | ␊ |
| 60 | unsigned 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 | ␊ |
| 69 | void 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 | ␊ |
| 95 | void 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 | ␊ |
| 117 | void 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 | ␊ |
| 126 | void 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 | ␊ |
| 151 | int QThread::idealThreadCount()␊ |
| 152 | {␊ |
| 153 | SYSTEM_INFO sysinfo;␊ |
| 154 | GetSystemInfo(&sysinfo);␊ |
| 155 | return sysinfo.dwNumberOfProcessors;␊ |
| 156 | }␊ |
| 157 | ␊ |
| 158 | ␊ |
| 159 | |
