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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the either Technology Preview License Agreement or the
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** Beta Release License Agreement.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain
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** additional rights. These rights are described in the Nokia Qt LGPL
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** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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** package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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|
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://www.qtsoftware.com/contact.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qglobal.h"
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#if defined(_OS_HPUX_)
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#include <sys/pstat.h>
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#elif defined(_OS_MAC_)
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#undef DEBUG
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#include <CoreServices/CoreServices.h>
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#elif defined(_OS_BSDI_)
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#include <mach/mach_types.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#endif
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#include <signal.h>
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#include <unistd.h>
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#include <stdio.h>
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#include "qthread.h"
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#include "qthread_p.h"
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|
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/**************************************************************************
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** QThreadPrivate
|
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*************************************************************************/
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QThreadPrivate::QThreadPrivate() :
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running(FALSE), finished(FALSE), terminated(FALSE), stackSize(0)
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{
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thread_id = 0;
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}
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QThreadPrivate::~QThreadPrivate()
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{
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}
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void *QThreadPrivate::start(void *arg)
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{
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#ifndef __ANDROID__
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pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
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#endif
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pthread_cleanup_push(QThreadPrivate::finish, arg);
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QThread *thr = reinterpret_cast<QThread *>(arg);
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thr->started();
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#ifndef __ANDROID__
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pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
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pthread_testcancel();
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#endif
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thr->run();
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pthread_cleanup_pop(1);
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return 0;
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}
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void QThreadPrivate::finish(void *arg)
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{
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QThread *thr = reinterpret_cast<QThread *>(arg);
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QThreadPrivate *d = thr->d;
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QMutexLocker locker(&d->mutex);
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d->running = FALSE;
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d->finished = TRUE;
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if (d->terminated)
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thr->terminated();
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d->terminated = FALSE;
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thr->finished();
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d->thread_id = 0;
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d->thread_done.wakeAll();
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}
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|
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/**************************************************************************
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|
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** QThread
|
|
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*************************************************************************/
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|
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void QThread::start()
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{
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QMutexLocker locker(&d->mutex);
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if (d->running) return;
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|
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// Block the SIGINT signal. The threads will inherit the signal mask.
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// This will avoid them catching SIGINT instead of this thread.
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sigset_t sigset, oldset;
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sigemptyset(&sigset);
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sigaddset(&sigset, SIGINT);
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pthread_sigmask(SIG_BLOCK, &sigset, &oldset);
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d->running = TRUE;
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d->finished = FALSE;
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);
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#ifndef __ANDROID__
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pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED);
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#endif
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if (d->stackSize>0)
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{
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#if defined(_POSIX_THREAD_ATTR_STACKSIZE) && (_POSIX_THREAD_ATTR_STACKSIZE-0>0)
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pthread_attr_setstacksize(&attr,d->stackSize);
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#endif
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}
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int code = pthread_create(&d->thread_id, &attr, QThreadPrivate::start, this);
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pthread_attr_destroy(&attr);
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if (code)
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{
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qWarning("QThread::start: Thread creation error: %d", code);
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d->running = FALSE;
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d->finished = FALSE;
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|
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d->thread_id = 0;
|
|
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}
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|
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else
|
|
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{
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|
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// Restore the old signal mask only for this thread.
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|
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pthread_sigmask(SIG_SETMASK, &oldset, NULL);
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}
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}
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|
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void QThread::terminate()
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{
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|
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QMutexLocker locker(&d->mutex);
|
|
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#ifndef __ANDROID__
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|
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if (!d->thread_id) return;
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|
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|
|
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int code = pthread_cancel(d->thread_id);
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|
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if (code)
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|
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{
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|
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qWarning("QThread::start: Thread termination error: %d", code);
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|
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}
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else
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|
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{
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d->terminated = TRUE;
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|
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}
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|
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#endif
|
|
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}
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|
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|
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void QThread::wait()
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|
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{
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|
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QMutexLocker locker(&d->mutex);
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|
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if (d->finished || !d->running) return;
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|
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|
|
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while (d->running)
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|
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{
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|
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d->thread_done.wait(locker.mutex());
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|
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}
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|
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}
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|
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|
|
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#if defined(QT_LINUXBASE) && !defined(_SC_NPROCESSORS_ONLN)
|
|
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// LSB doesn't define _SC_NPROCESSORS_ONLN.
|
|
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# define _SC_NPROCESSORS_ONLN 84
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|
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#endif
|
|
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|
|
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int QThread::idealThreadCount()
|
|
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{
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|
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int cores = -1;
|
|
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#if defined(_OS_MAC_)
|
|
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// Mac OS X
|
|
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cores = (int)MPProcessorsScheduled();
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|
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#elif defined(_OS_HPUX_)
|
|
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// HP-UX
|
|
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struct pst_dynamic psd;
|
|
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if (pstat_getdynamic(&psd, sizeof(psd), 1, 0) == -1)
|
|
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{
|
|
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perror("pstat_getdynamic");
|
|
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cores = -1;
|
|
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}
|
|
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else
|
|
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{
|
|
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cores = (int)psd.psd_proc_cnt;
|
|
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}
|
|
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#elif defined(_OS_BSDI_)
|
|
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// FreeBSD, OpenBSD, NetBSD, BSD/OS
|
|
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size_t len = sizeof(cores);
|
|
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int mib[2];
|
|
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mib[0] = CTL_HW;
|
|
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mib[1] = HW_NCPU;
|
|
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|
|
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if (sysctl(mib, 2, &cores, &len, NULL, 0) != 0)
|
|
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{
|
|
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perror("sysctl");
|
|
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cores = -1;
|
|
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}
|
|
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#elif defined(_OS_IRIX_)
|
|
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// IRIX
|
|
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1c1d7e |
cores = (int)sysconf(_SC_NPROC_ONLN);
|
|
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#else
|
|
Packit |
1c1d7e |
// the rest: Linux, Solaris, AIX, Tru64
|
|
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1c1d7e |
cores = (int)sysconf(_SC_NPROCESSORS_ONLN);
|
|
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1c1d7e |
#endif
|
|
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return cores;
|
|
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}
|
|
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|