windows-nt/Source/XPSP1/NT/inetsrv/query/common/nulock.hxx

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2020-09-26 03:20:57 -05:00
//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1991 - 1997.
//
// Class: CNonUnwindableLock (lck)
//
// Purpose: Lock using a Mutex Semaphore
//
// History: 02-Oct-91 BartoszM Created.
//
// Notes: Simple lock object to be created on the stack.
// The constructor acquires the semaphor, the destructor
// (called when lock is going out of scope) releases it.
//
// operator delete cannot change the unwind stack.
//
//----------------------------------------------------------------------------
#pragma once
#ifndef EXCEPT_TEST
class CNonUnwindableLock
{
public:
inline CNonUnwindableLock ( CMutexSem& mxs );
inline ~CNonUnwindableLock ();
private:
CMutexSem& _mxs;
};
//+---------------------------------------------------------------------------
//
// Member: CNonUnwindableLock::CNonUnwindableLock
//
// Synopsis: Acquire semaphore
//
// History: 02-Oct-91 BartoszM Created.
//
//----------------------------------------------------------------------------
inline CNonUnwindableLock::CNonUnwindableLock ( CMutexSem& mxs )
: _mxs ( mxs )
{
_mxs.Request();
}
//+---------------------------------------------------------------------------
//
// Member: CNonUnwindableLock::~CNonUnwindableLock
//
// Synopsis: Release semaphore
//
// History: 02-Oct-91 BartoszM Created.
//
//----------------------------------------------------------------------------
inline CNonUnwindableLock::~CNonUnwindableLock ()
{
_mxs.Release();
}
#endif // EXCEPT_TEST