64 lines
1.6 KiB
Text
64 lines
1.6 KiB
Text
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file lightReMutexHolder.I
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* @author drose
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* @date 2008-10-08
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*/
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/**
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*
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*/
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INLINE LightReMutexHolder::
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LightReMutexHolder(const LightReMutex &mutex) {
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#if defined(HAVE_THREADS) || defined(DEBUG_THREADS)
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_mutex = &mutex;
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_mutex->acquire();
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#endif
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}
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/**
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* This variant on the constructor accepts the current thread as a parameter,
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* if it is already known, as an optimization.
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*/
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INLINE LightReMutexHolder::
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LightReMutexHolder(const LightReMutex &mutex, Thread *current_thread) {
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#if defined(HAVE_THREADS) || defined(DEBUG_THREADS)
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_mutex = &mutex;
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_mutex->acquire(current_thread);
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#endif
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}
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/**
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* If the LightReMutexHolder constructor is given a pointer to a LightReMutex
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* object (instead of an actual object), it will first check to see if the
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* pointer is NULL, and allocate a new LightReMutex if it is. This is
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* intended as a convenience for functions that may need to reference a
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* LightReMutex at static init time, when it is impossible to guarantee
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* ordering of initializers.
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*/
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INLINE LightReMutexHolder::
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LightReMutexHolder(LightReMutex *&mutex) {
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#if defined(HAVE_THREADS) || defined(DEBUG_THREADS)
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if (mutex == nullptr) {
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mutex = new LightReMutex;
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}
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_mutex = mutex;
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_mutex->acquire();
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#endif
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}
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/**
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*
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*/
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INLINE LightReMutexHolder::
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~LightReMutexHolder() {
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#if defined(HAVE_THREADS) || defined(DEBUG_THREADS)
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_mutex->release();
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#endif
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}
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