104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
/*
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* Copyright (C) 2013 Collabora Ltd.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef GMutexLocker_h
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#define GMutexLocker_h
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#if USE(GLIB)
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#include <glib.h>
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#include <wtf/Noncopyable.h>
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namespace WTF {
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template<typename T>
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struct MutexWrapper;
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template<>
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struct MutexWrapper<GMutex> {
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static void lock(GMutex* mutex)
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{
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g_mutex_lock(mutex);
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}
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static void unlock(GMutex* mutex)
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{
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g_mutex_unlock(mutex);
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}
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};
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template<>
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struct MutexWrapper<GRecMutex> {
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static void lock(GRecMutex* mutex)
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{
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g_rec_mutex_lock(mutex);
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}
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static void unlock(GRecMutex* mutex)
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{
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g_rec_mutex_unlock(mutex);
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}
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};
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template<typename T>
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class GMutexLocker {
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WTF_MAKE_FAST_ALLOCATED;
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WTF_MAKE_NONCOPYABLE(GMutexLocker);
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public:
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explicit GMutexLocker(T& mutex)
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: m_mutex(mutex)
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, m_locked(false)
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{
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lock();
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}
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~GMutexLocker()
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{
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unlock();
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}
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void lock()
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{
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if (m_locked)
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return;
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MutexWrapper<T>::lock(&m_mutex);
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m_locked = true;
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}
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void unlock()
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{
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if (!m_locked)
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return;
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m_locked = false;
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MutexWrapper<T>::unlock(&m_mutex);
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}
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private:
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T& m_mutex;
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bool m_locked;
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};
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} // namespace WTF
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#endif // USE(GLIB)
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#endif // GMutexLocker_h
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