89 lines
1.4 KiB
C
89 lines
1.4 KiB
C
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//
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// auto_cs.h CRITICAL_SECTION
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//
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#pragma once
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class auto_leave;
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class auto_cs
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{
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public:
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auto_cs()
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{ InitializeCriticalSection(&m_cs); }
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~auto_cs()
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{
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DeleteCriticalSection(&m_cs);
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};
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// return value of current dumb pointer
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LPCRITICAL_SECTION get()
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{ return &m_cs; };
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LPCRITICAL_SECTION get() const
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{ return (LPCRITICAL_SECTION)&m_cs; };
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protected:
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CRITICAL_SECTION m_cs;
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};
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class auto_leave
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{
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public:
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auto_leave(auto_cs& cs)
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: m_ulCount(0), m_pcs(cs.get()) {}
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auto_leave(const auto_cs& cs)
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{
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m_ulCount =0;
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m_pcs = cs.get();
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}
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~auto_leave()
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{
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reset();
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}
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auto_leave& operator=(auto_cs& cs)
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{
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reset();
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m_pcs = cs.get();
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return *this;
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}
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void EnterCriticalSection()
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{ ::EnterCriticalSection(m_pcs); m_ulCount++; }
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void LeaveCriticalSection()
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{
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if (m_ulCount)
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{
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m_ulCount--;
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::LeaveCriticalSection(m_pcs);
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}
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}
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//Note: Win95 doesn't support TryEnterCriticalSection.
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//Commenting out this since we don't use it. [mgorti]
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//BOOL TryEnterCriticalSection()
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//{
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// if (::TryEnterCriticalSection(m_pcs))
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// {
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// m_ulCount++;
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// return TRUE;
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// }
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// return FALSE;
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//}
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protected:
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void reset()
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{
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while (m_ulCount)
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{
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LeaveCriticalSection();
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}
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m_pcs = 0;
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}
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ULONG m_ulCount;
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LPCRITICAL_SECTION m_pcs;
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};
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