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Diffstat (limited to 'dep/src/zthread/win32/AtomicCount.cxx')
-rw-r--r-- | dep/src/zthread/win32/AtomicCount.cxx | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/dep/src/zthread/win32/AtomicCount.cxx b/dep/src/zthread/win32/AtomicCount.cxx new file mode 100644 index 00000000000..84cbf8c3ddc --- /dev/null +++ b/dep/src/zthread/win32/AtomicCount.cxx @@ -0,0 +1,60 @@ +/* + * 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 __ZTATOMICCOUNTIMPL_H__ +#define __ZTATOMICCOUNTIMPL_H__ + +#include <windows.h> +#include <assert.h> + +namespace ZThread { + + +AtomicCount::AtomicCount() { + + _value = reinterpret_cast<void*>(new LONG(0)); + +} + +AtomicCount::~AtomicCount() { + + assert(*reinterpret_cast<LPLONG>(_value) == 0); + delete reinterpret_cast<LPLONG>(_value); + +} + +void AtomicCount::increment() { + + ::InterlockedIncrement(reinterpret_cast<LPLONG>(_value)); + +} + +bool AtomicCount::decrement() { + + LONG v = ::InterlockedDecrement(reinterpret_cast<LPLONG>(_value)); + return static_cast<unsigned long>(v) == 0; + +} + +}; + +#endif // __ZTATOMICCOUNTIMPL_H__ |