46 lines
752 B
Plaintext
46 lines
752 B
Plaintext
/**
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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 mutexSpinlockImpl.I
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* @author drose
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* @date 2006-04-11
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*/
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/**
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*
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*/
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CONSTEXPR MutexSpinlockImpl::
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MutexSpinlockImpl() : _lock(0) {
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}
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/**
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*
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*/
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INLINE void MutexSpinlockImpl::
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acquire() {
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if (!try_acquire()) {
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do_lock();
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}
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}
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/**
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*
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*/
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INLINE bool MutexSpinlockImpl::
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try_acquire() {
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return (AtomicAdjust::compare_and_exchange(_lock, 0, 1) == 0);
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}
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/**
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*
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*/
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INLINE void MutexSpinlockImpl::
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release() {
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AtomicAdjust::set(_lock, 0);
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}
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