93 lines
1.6 KiB
C++
93 lines
1.6 KiB
C++
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/*****************************************************************************\
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* Class CriticalSection - Implementation
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*
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* Copyright (C) 1998 Microsoft Corporation
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*
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* History:
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* Jun 10, 1998, Weihai Chen (weihaic)
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*
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\*****************************************************************************/
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#include "spllibp.hxx"
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CCriticalSection::CCriticalSection (void):
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m_bValid (TRUE)
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{
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__try {
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InitializeCriticalSection (&m_csec);
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}
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__except (1) {
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m_bValid = FALSE;
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SetLastError (ERROR_INVALID_HANDLE);
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}
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}
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CCriticalSection::~CCriticalSection (void)
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{
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if (m_bValid) {
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DeleteCriticalSection (&m_csec);
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}
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}
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BOOL
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CCriticalSection::Lock (void)
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const
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{
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BOOL bRet;
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if (m_bValid) {
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__try {
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EnterCriticalSection ((PCRITICAL_SECTION) &m_csec);
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bRet = TRUE;
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}
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__except (1) {
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SetLastError (ERROR_INVALID_HANDLE);
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bRet = FALSE;
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}
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}
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else
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bRet = FALSE;
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return bRet;
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}
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BOOL
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CCriticalSection::Unlock (void)
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const
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{
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BOOL bRet;
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if (m_bValid) {
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LeaveCriticalSection ((PCRITICAL_SECTION) &m_csec);
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bRet = TRUE;
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}
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else
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bRet = FALSE;
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return TRUE;
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}
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TAutoCriticalSection::TAutoCriticalSection (
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CONST TCriticalSection & refCrit):
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m_pCritSec (refCrit)
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{
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m_bValid = m_pCritSec.Lock ();
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}
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TAutoCriticalSection::~TAutoCriticalSection ()
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{
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if (m_bValid)
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m_pCritSec.Unlock ();
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}
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BOOL
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TAutoCriticalSection::bValid (VOID)
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{
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return m_bValid;
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};
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