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