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59 lines
979 B
59 lines
979 B
// RdWrt.h
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#pragma once
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#ifndef _READWRITE_H_
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#define _READWRITE_H_
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// this class handles a single-writer, multi-reader threading model
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class CReadWrite
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{
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public:
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CReadWrite();
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~CReadWrite();
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void EnterReader();
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void ExitReader();
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void EnterWriter();
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void ExitWriter();
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private:
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HANDLE m_hevtNoReaders;
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HANDLE m_hmtxWriter;
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HANDLE m_handles[2];
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LONG m_cReaders;
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};
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class CReader
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{
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public:
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CReader( CReadWrite& rw )
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: m_rrw( rw )
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{
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m_rrw.EnterReader();
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}
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~CReader()
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{
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m_rrw.ExitReader();
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}
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private:
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CReadWrite& m_rrw;
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};
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class CWriter
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{
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public:
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CWriter( CReadWrite& rw )
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: m_rrw( rw )
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{
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m_rrw.EnterWriter();
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}
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~CWriter()
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{
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m_rrw.ExitWriter();
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}
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private:
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CReadWrite& m_rrw;
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};
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#endif
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