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Diffstat (limited to 'dep/include/zthread/AtomicCount.h')
-rw-r--r-- | dep/include/zthread/AtomicCount.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/dep/include/zthread/AtomicCount.h b/dep/include/zthread/AtomicCount.h new file mode 100644 index 00000000000..ea042a7feb2 --- /dev/null +++ b/dep/include/zthread/AtomicCount.h @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2005, Eric Crahen + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is furnished + * to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef __ZTATOMICCOUNT_H__ +#define __ZTATOMICCOUNT_H__ + +#include <cstdlib> + +#include "zthread/Config.h" +#include "zthread/NonCopyable.h" + +namespace ZThread { + + /** + * @class AtomicCount + * @author Eric Crahen <http://www.code-foo.com> + * @date <2003-07-16T09:41:55-0400> + * @version 2.3.0 + * + * This class provides an interface to a small integer whose value can be + * incremented or decremented atomically. It's designed to be as simple and + * lightweight as possible so that it can be used cheaply to create reference + * counts. + */ + class ZTHREAD_API AtomicCount : public NonCopyable { + + void* _value; + + public: + + //! Create a new AtomicCount, initialized to a value of 1 + AtomicCount(); + + //! Destroy a new AtomicCount + ~AtomicCount(); + + //! Postfix decrement and return the current value + size_t operator--(int); + + //! Postfix increment and return the current value + size_t operator++(int); + + //! Prefix decrement and return the current value + size_t operator--(); + + //! Prefix increment and return the current value + size_t operator++(); + + + }; /* AtomicCount */ + + +} // namespace ZThread + +#endif // __ZTATOMICCOUNT_H__ |