diff options
Diffstat (limited to 'src/corelib/thread/qmutex_unix.cpp')
-rw-r--r-- | src/corelib/thread/qmutex_unix.cpp | 120 |
1 files changed, 13 insertions, 107 deletions
diff --git a/src/corelib/thread/qmutex_unix.cpp b/src/corelib/thread/qmutex_unix.cpp index df2f606a23..4d01deb7d4 100644 --- a/src/corelib/thread/qmutex_unix.cpp +++ b/src/corelib/thread/qmutex_unix.cpp @@ -1,47 +1,10 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Copyright (C) 2015 Olivier Goffart <ogoffart@woboq.com> -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// Copyright (C) 2015 Olivier Goffart <ogoffart@woboq.com> +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include "qplatformdefs.h" #include "qmutex.h" #include "qstring.h" -#include "qelapsedtimer.h" #include "qatomic.h" #include "qmutex_p.h" #include <errno.h> @@ -55,105 +18,48 @@ QT_BEGIN_NAMESPACE -static void report_error(int code, const char *where, const char *what) +static void qt_report_error(int code, const char *where, const char *what) { if (code != 0) qErrnoWarning(code, "%s: %s failure", where, what); } -#ifdef QT_UNIX_SEMAPHORE - QMutexPrivate::QMutexPrivate() { - report_error(sem_init(&semaphore, 0, 0), "QMutex", "sem_init"); + qt_report_error(sem_init(&semaphore, 0, 0), "QMutex", "sem_init"); } QMutexPrivate::~QMutexPrivate() { - report_error(sem_destroy(&semaphore), "QMutex", "sem_destroy"); + qt_report_error(sem_destroy(&semaphore), "QMutex", "sem_destroy"); } -bool QMutexPrivate::wait(int timeout) +bool QMutexPrivate::wait(QDeadlineTimer timeout) { int errorCode; - if (timeout < 0) { + if (timeout.isForever()) { do { errorCode = sem_wait(&semaphore); } while (errorCode && errno == EINTR); - report_error(errorCode, "QMutex::lock()", "sem_wait"); + qt_report_error(errorCode, "QMutex::lock()", "sem_wait"); } else { - timespec ts; - report_error(clock_gettime(CLOCK_REALTIME, &ts), "QMutex::lock()", "clock_gettime"); - ts.tv_sec += timeout / 1000; - ts.tv_nsec += timeout % 1000 * Q_UINT64_C(1000) * 1000; - normalizedTimespec(ts); do { + auto tp = timeout.deadline<std::chrono::system_clock>(); + timespec ts = durationToTimespec(tp.time_since_epoch()); errorCode = sem_timedwait(&semaphore, &ts); } while (errorCode && errno == EINTR); if (errorCode && errno == ETIMEDOUT) return false; - report_error(errorCode, "QMutex::lock()", "sem_timedwait"); + qt_report_error(errorCode, "QMutex::lock()", "sem_timedwait"); } return true; } void QMutexPrivate::wakeUp() noexcept { - report_error(sem_post(&semaphore), "QMutex::unlock", "sem_post"); -} - -#else // QT_UNIX_SEMAPHORE - -QMutexPrivate::QMutexPrivate() - : wakeup(false) -{ - report_error(pthread_mutex_init(&mutex, NULL), "QMutex", "mutex init"); - qt_initialize_pthread_cond(&cond, "QMutex"); -} - -QMutexPrivate::~QMutexPrivate() -{ - report_error(pthread_cond_destroy(&cond), "QMutex", "cv destroy"); - report_error(pthread_mutex_destroy(&mutex), "QMutex", "mutex destroy"); -} - -bool QMutexPrivate::wait(int timeout) -{ - report_error(pthread_mutex_lock(&mutex), "QMutex::lock", "mutex lock"); - int errorCode = 0; - while (!wakeup) { - if (timeout < 0) { - errorCode = pthread_cond_wait(&cond, &mutex); - } else { - timespec ti; - qt_abstime_for_timeout(&ti, QDeadlineTimer(timeout)); - errorCode = pthread_cond_timedwait(&cond, &mutex, &ti); - } - if (errorCode) { - if (errorCode == ETIMEDOUT) { - if (wakeup) - errorCode = 0; - break; - } - report_error(errorCode, "QMutex::lock()", "cv wait"); - } - } - bool ret = wakeup; - wakeup = false; - report_error(pthread_mutex_unlock(&mutex), "QMutex::lock", "mutex unlock"); - return ret; -} - -void QMutexPrivate::wakeUp() noexcept -{ - report_error(pthread_mutex_lock(&mutex), "QMutex::unlock", "mutex lock"); - wakeup = true; - report_error(pthread_cond_signal(&cond), "QMutex::unlock", "cv signal"); - report_error(pthread_mutex_unlock(&mutex), "QMutex::unlock", "mutex unlock"); + qt_report_error(sem_post(&semaphore), "QMutex::unlock", "sem_post"); } -#endif - QT_END_NAMESPACE |