63 lines
1 KiB
C++
63 lines
1 KiB
C++
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/*++
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Copyright (C) Microsoft Corporation, 1996 - 1999
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Module Name:
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hndlcach.hxx
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Abstract:
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The handle cache.
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Author:
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Kamen Moutafov [KamenM]
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Revision History:
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--*/
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#ifndef __HNDLCACH_HXX
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#define __HNDLCACH_HXX
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const INT DEFAULT_CACHE_SIZE = 2;
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class HandleCache
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{
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public:
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inline HandleCache(void)
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{
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Init();
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}
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~HandleCache(void);
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inline void Init(void)
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{
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int i;
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for (i = 0; i < DEFAULT_CACHE_SIZE; i ++)
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{
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cacheSlots[i] = NULL;
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}
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}
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// not synchronized
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HANDLE CheckOutHandle(void);
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// synchronized between multiple threads. Will zero out the handle if it
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// was saved in the cache. If the cache is empty, this call has defined
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// FIFO semantics. This is significant in the NPFS case.
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void CheckinHandle(HANDLE *ph);
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#if defined(DBG) || defined(_DEBUG)
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// not synchornized
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BOOL IsSecondHandleUsed(void);
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#endif
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private:
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HANDLE cacheSlots[DEFAULT_CACHE_SIZE];
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};
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#endif // __HNDLCACH_HXX
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