93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
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/**********************************************************************/
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/** Microsoft Windows NT **/
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/** Copyright(c) Microsoft Corp., 1994 **/
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/**********************************************************************/
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/*
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filehash.hxx
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This module defines the classes used for storing TS_OPEN_FILE_INFO
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objects in a hash table.
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FILE HISTORY:
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MCourage 09-Dec-1997 Created
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*/
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#ifndef __FILEHASH_HXX__
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#define __FILEHASH_HXX__
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#include <lkrhash.h>
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#include <mbstring.h>
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#include <tsunami.hxx>
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#include <dbgutil.h>
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extern VOID I_DerefFileInfo(TS_OPEN_FILE_INFO *pOpenFile);
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// Moved to tsunami.hxx
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//
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// class CFileKey {
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// public:
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// CHAR * m_pszFileName; // The file name in upper-case
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// DWORD m_cbFileName; // The number of bytes in the file name
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// };
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class CFileHashTable
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: public CTypedHashTable<CFileHashTable, TS_OPEN_FILE_INFO, const CFileKey*>
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{
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public:
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CFileHashTable(
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LPCSTR pszName)
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: CTypedHashTable<CFileHashTable, TS_OPEN_FILE_INFO, const CFileKey*>(
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pszName)
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{}
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static const CFileKey *
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ExtractKey(const TS_OPEN_FILE_INFO *pOpenFile)
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{
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return pOpenFile->GetKey();
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}
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static DWORD
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CalcKeyHash(const CFileKey * fileKey)
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{
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DBG_ASSERT( NULL != fileKey );
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const CHAR * psz = fileKey->m_pszFileName;
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if (fileKey->m_cbFileName > 80)
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psz += fileKey->m_cbFileName - 80;
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return HashString(psz, fileKey->m_cbFileName);
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}
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static bool
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EqualKeys(const CFileKey * fileKey1, const CFileKey * fileKey2)
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{
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if ((fileKey1->m_cbFileName == fileKey2->m_cbFileName) &&
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(memcmp(fileKey1->m_pszFileName,
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fileKey2->m_pszFileName,
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fileKey2->m_cbFileName) == 0)) {
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return TRUE;
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} else {
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return FALSE;
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}
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}
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static void
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AddRefRecord(TS_OPEN_FILE_INFO * pOpenFile, int nIncr)
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{
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DBG_ASSERT( nIncr == +1 || nIncr == -1 );
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if (nIncr == +1) {
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pOpenFile->AddRef();
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} else {
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I_DerefFileInfo(pOpenFile);
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}
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}
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};
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#endif // __FILEHASH_HXX__
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