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| Source at commit 1322 created 12 years 8 months ago. By meklort, Add doxygen to utils folder | |
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| 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 "qglobal.h"␊ |
| 43 | ␊ |
| 44 | #if defined(_OS_HPUX_)␊ |
| 45 | #include <sys/pstat.h>␊ |
| 46 | #elif defined(_OS_MAC_)␊ |
| 47 | #undef DEBUG␊ |
| 48 | #include <CoreServices/CoreServices.h>␊ |
| 49 | #elif defined(_OS_BSDI_)␊ |
| 50 | #include <mach/mach_types.h>␊ |
| 51 | #include <sys/systm.h>␊ |
| 52 | #include <sys/types.h>␊ |
| 53 | #include <sys/sysctl.h>␊ |
| 54 | #endif␊ |
| 55 | #include <unistd.h>␊ |
| 56 | ␊ |
| 57 | #include "qthread.h"␊ |
| 58 | #include "qthread_p.h"␊ |
| 59 | ␊ |
| 60 | ␊ |
| 61 | /**************************************************************************␊ |
| 62 | ** QThreadPrivate␊ |
| 63 | *************************************************************************/␊ |
| 64 | ␊ |
| 65 | QThreadPrivate::QThreadPrivate() :␊ |
| 66 | running(FALSE), finished(FALSE), terminated(FALSE), stackSize(0)␊ |
| 67 | {␊ |
| 68 | thread_id = 0;␊ |
| 69 | }␊ |
| 70 | ␊ |
| 71 | QThreadPrivate::~QThreadPrivate()␊ |
| 72 | {␊ |
| 73 | }␊ |
| 74 | ␊ |
| 75 | void *QThreadPrivate::start(void *arg)␊ |
| 76 | {␊ |
| 77 | pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);␊ |
| 78 | pthread_cleanup_push(QThreadPrivate::finish, arg);␊ |
| 79 | ␊ |
| 80 | QThread *thr = reinterpret_cast<QThread *>(arg);␊ |
| 81 | ␊ |
| 82 | thr->started();␊ |
| 83 | pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);␊ |
| 84 | pthread_testcancel();␊ |
| 85 | thr->run();␊ |
| 86 | ␊ |
| 87 | pthread_cleanup_pop(1);␊ |
| 88 | return 0;␊ |
| 89 | }␊ |
| 90 | ␊ |
| 91 | void QThreadPrivate::finish(void *arg)␊ |
| 92 | {␊ |
| 93 | QThread *thr = reinterpret_cast<QThread *>(arg);␊ |
| 94 | QThreadPrivate *d = thr->d;␊ |
| 95 | QMutexLocker locker(&d->mutex);␊ |
| 96 | ␊ |
| 97 | d->running = FALSE;␊ |
| 98 | d->finished = TRUE;␊ |
| 99 | if (d->terminated)␊ |
| 100 | thr->terminated();␊ |
| 101 | d->terminated = FALSE;␊ |
| 102 | thr->finished();␊ |
| 103 | ␊ |
| 104 | d->thread_id = 0;␊ |
| 105 | d->thread_done.wakeAll();␊ |
| 106 | }␊ |
| 107 | ␊ |
| 108 | ␊ |
| 109 | ␊ |
| 110 | ␊ |
| 111 | /**************************************************************************␊ |
| 112 | ** QThread␊ |
| 113 | *************************************************************************/␊ |
| 114 | ␊ |
| 115 | void QThread::start()␊ |
| 116 | {␊ |
| 117 | QMutexLocker locker(&d->mutex);␊ |
| 118 | if (d->running) return;␊ |
| 119 | ␊ |
| 120 | d->running = TRUE;␊ |
| 121 | d->finished = FALSE;␊ |
| 122 | ␊ |
| 123 | pthread_attr_t attr;␊ |
| 124 | pthread_attr_init(&attr);␊ |
| 125 | pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);␊ |
| 126 | pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED);␊ |
| 127 | if (d->stackSize>0)␊ |
| 128 | {␊ |
| 129 | #if defined(_POSIX_THREAD_ATTR_STACKSIZE) && (_POSIX_THREAD_ATTR_STACKSIZE-0>0)␊ |
| 130 | pthread_attr_setstacksize(&attr,d->stackSize);␊ |
| 131 | #endif␊ |
| 132 | }␊ |
| 133 | int code = pthread_create(&d->thread_id, &attr, QThreadPrivate::start, this);␊ |
| 134 | pthread_attr_destroy(&attr);␊ |
| 135 | ␊ |
| 136 | if (code)␊ |
| 137 | {␊ |
| 138 | qWarning("QThread::start: Thread creation error: %d", code);␊ |
| 139 | ␊ |
| 140 | d->running = FALSE;␊ |
| 141 | d->finished = FALSE;␊ |
| 142 | d->thread_id = 0;␊ |
| 143 | }␊ |
| 144 | }␊ |
| 145 | ␊ |
| 146 | void QThread::terminate()␊ |
| 147 | {␊ |
| 148 | QMutexLocker locker(&d->mutex);␊ |
| 149 | ␊ |
| 150 | if (!d->thread_id) return;␊ |
| 151 | ␊ |
| 152 | int code = pthread_cancel(d->thread_id);␊ |
| 153 | if (code)␊ |
| 154 | {␊ |
| 155 | qWarning("QThread::start: Thread termination error: %d", code);␊ |
| 156 | }␊ |
| 157 | else␊ |
| 158 | {␊ |
| 159 | d->terminated = TRUE;␊ |
| 160 | }␊ |
| 161 | }␊ |
| 162 | ␊ |
| 163 | void QThread::wait()␊ |
| 164 | {␊ |
| 165 | QMutexLocker locker(&d->mutex);␊ |
| 166 | if (d->finished || !d->running) return;␊ |
| 167 | ␊ |
| 168 | while (d->running)␊ |
| 169 | {␊ |
| 170 | d->thread_done.wait(locker.mutex());␊ |
| 171 | }␊ |
| 172 | }␊ |
| 173 | ␊ |
| 174 | #if defined(QT_LINUXBASE) && !defined(_SC_NPROCESSORS_ONLN)␊ |
| 175 | // LSB doesn't define _SC_NPROCESSORS_ONLN.␊ |
| 176 | # define _SC_NPROCESSORS_ONLN 84␊ |
| 177 | #endif␊ |
| 178 | ␊ |
| 179 | int QThread::idealThreadCount()␊ |
| 180 | {␊ |
| 181 | int cores = -1;␊ |
| 182 | #if defined(_OS_MAC_)␊ |
| 183 | // Mac OS X␊ |
| 184 | cores = MPProcessorsScheduled();␊ |
| 185 | #elif defined(_OS_HPUX_)␊ |
| 186 | // HP-UX␊ |
| 187 | struct pst_dynamic psd;␊ |
| 188 | if (pstat_getdynamic(&psd, sizeof(psd), 1, 0) == -1) ␊ |
| 189 | {␊ |
| 190 | perror("pstat_getdynamic");␊ |
| 191 | cores = -1;␊ |
| 192 | } ␊ |
| 193 | else ␊ |
| 194 | {␊ |
| 195 | cores = (int)psd.psd_proc_cnt;␊ |
| 196 | }␊ |
| 197 | #elif defined(_OS_BSDI_)␊ |
| 198 | // FreeBSD, OpenBSD, NetBSD, BSD/OS␊ |
| 199 | size_t len = sizeof(cores);␊ |
| 200 | int mib[2];␊ |
| 201 | mib[0] = CTL_HW;␊ |
| 202 | mib[1] = HW_NCPU;␊ |
| 203 | ␊ |
| 204 | if (sysctl(mib, 2, &cores, &len, NULL, 0) != 0) ␊ |
| 205 | {␊ |
| 206 | perror("sysctl");␊ |
| 207 | cores = -1;␊ |
| 208 | }␊ |
| 209 | #elif defined(_OS_IRIX_)␊ |
| 210 | // IRIX␊ |
| 211 | cores = (int)sysconf(_SC_NPROC_ONLN);␊ |
| 212 | #else␊ |
| 213 | // the rest: Linux, Solaris, AIX, Tru64␊ |
| 214 | cores = (int)sysconf(_SC_NPROCESSORS_ONLN);␊ |
| 215 | #endif␊ |
| 216 | return cores; ␊ |
| 217 | }␊ |
| 218 | ␊ |
| 219 | |
