64 lines
1.6 KiB
Text
64 lines
1.6 KiB
Text
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/**
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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 reMutexHolder.I
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* @author drose
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* @date 2006-01-15
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*/
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/**
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*
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*/
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INLINE ReMutexHolder::
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ReMutexHolder(const ReMutex &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 ReMutexHolder::
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ReMutexHolder(const ReMutex &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 ReMutexHolder constructor is given a pointer to a ReMutex object
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* (instead of an actual object), it will first check to see if the pointer is
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* NULL, and allocate a new ReMutex if it is. This is intended as a
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* convenience for functions that may need to reference a ReMutex at static
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* init time, when it is impossible to guarantee ordering of initializers.
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*/
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INLINE ReMutexHolder::
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ReMutexHolder(ReMutex *&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 ReMutex;
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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 ReMutexHolder::
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~ReMutexHolder() {
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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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