mirror of https://github.com/Icinga/icinga2.git
99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2014 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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#ifndef OBJECTLOCK_H
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#define OBJECTLOCK_H
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#include "base/object.hpp"
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namespace icinga
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{
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/**
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* A scoped lock for Objects.
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*/
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struct I2_BASE_API ObjectLock {
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public:
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inline ObjectLock(void)
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: m_Object(NULL), m_Locked(false)
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{ }
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inline ~ObjectLock(void)
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{
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Unlock();
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}
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inline ObjectLock(const Object::Ptr& object)
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: m_Object(object.get()), m_Locked(false)
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{
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if (m_Object)
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Lock();
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}
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inline ObjectLock(const Object *object)
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: m_Object(object), m_Locked(false)
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{
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if (m_Object)
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Lock();
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}
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inline void Lock(void)
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{
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ASSERT(!m_Locked && m_Object != NULL);
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ASSERT(!m_Object->OwnsLock());
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m_Object->m_Mutex.Lock();
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m_Locked = true;
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#ifdef I2_DEBUG
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# ifdef _WIN32
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InterlockedExchange(&m_Object->m_LockOwner, GetCurrentThreadId());
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# else /* _WIN32 */
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__sync_lock_test_and_set(&m_Object->m_LockOwner, pthread_self());
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# endif /* _WIN32 */
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#endif /* I2_DEBUG */
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}
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inline void Unlock(void)
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{
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#ifdef I2_DEBUG
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if (m_Locked) {
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# ifdef _WIN32
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InterlockedExchange(&m_Object->m_LockOwner, 0);
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# else /* _WIN32 */
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__sync_lock_release(&m_Object->m_LockOwner);
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# endif /* _WIN32 */
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}
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#endif /* I2_DEBUG */
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if (m_Locked) {
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m_Object->m_Mutex.Unlock();
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m_Locked = false;
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}
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}
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private:
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const Object *m_Object;
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bool m_Locked;
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};
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}
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#endif /* OBJECTLOCK_H */
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