mirror of
https://github.com/Icinga/icinga2.git
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67 lines
2.6 KiB
C++
67 lines
2.6 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2013 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program 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 *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "base/thinmutex.hpp"
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#include "base/timer.hpp"
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#include "base/convert.hpp"
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#include "base/logger.hpp"
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using namespace icinga;
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/**
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* Locks the mutex and inflates the lock.
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*/
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void ThinMutex::LockSlowPath(void)
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{
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unsigned int it = 0;
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#ifdef _WIN32
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# ifdef _WIN64
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while (InterlockedCompareExchange64(&m_Data, THINLOCK_LOCKED, THINLOCK_UNLOCKED) != THINLOCK_UNLOCKED) {
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# else /* _WIN64 */
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while (InterlockedCompareExchange(&m_Data, THINLOCK_LOCKED, THINLOCK_UNLOCKED) != THINLOCK_UNLOCKED) {
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# endif /* _WIN64 */
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#else /* _WIN32 */
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while (!__sync_bool_compare_and_swap(&m_Data, THINLOCK_UNLOCKED, THINLOCK_LOCKED)) {
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#endif /* _WIN32 */
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if (m_Data > THINLOCK_LOCKED) {
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boost::mutex *mtx = reinterpret_cast<boost::mutex *>(m_Data);
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mtx->lock();
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return;
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}
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Spin(it);
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it++;
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}
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boost::mutex *mtx = new boost::mutex();
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mtx->lock();
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#ifdef _WIN32
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# ifdef _WIN64
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InterlockedCompareExchange64(&m_Data, reinterpret_cast<LONGLONG>(mtx), THINLOCK_LOCKED);
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# else /* _WIN64 */
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InterlockedCompareExchange(&m_Data, reinterpret_cast<LONG>(mtx), THINLOCK_LOCKED);
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# endif /* _WIN64 */
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#else /* _WIN32 */
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__sync_bool_compare_and_swap(&m_Data, THINLOCK_LOCKED, reinterpret_cast<uintptr_t>(mtx));
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#endif /* _WIN32 */
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}
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