117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1994 - 1998.
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//
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// File: waitmult.hxx
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//
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// Contents: Encapsulates a Win32 WaitForMultipleObjects
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//
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// History: 04-Aug-94 DwightKr Created
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//
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//--------------------------------------------------------------------------
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#pragma once
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//+-------------------------------------------------------------------------
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//
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// Class: CWaitForMultipleObjects
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//
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// Purpose: Constructor
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//
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// History: 07-Jun-94 DwightKr Created
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//
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//--------------------------------------------------------------------------
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class CWaitForMultipleObjects
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{
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public :
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inline CWaitForMultipleObjects(ULONG cMaxHandles);
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~CWaitForMultipleObjects() { delete [] _pHandles; }
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inline void AddEvent( HANDLE hEvent );
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inline HANDLE Get( DWORD i ) const;
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inline DWORD Wait( DWORD dwTimeout );
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void ResetCount() { _cNumHandles = 0; }
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private:
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HANDLE * _pHandles; // Doesn't own handles in _pHandles
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ULONG _cMaxHandles;
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ULONG _cNumHandles;
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};
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//+-------------------------------------------------------------------------
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//
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// Method: CWaitForMultipleObjects::CWaitForMultipleObjects, public
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//
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// Purpose: Constructor
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//
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// History: 07-Jun-94 DwightKr Created
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//
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//--------------------------------------------------------------------------
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inline CWaitForMultipleObjects::CWaitForMultipleObjects( ULONG cMaxHandles )
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: _cMaxHandles(cMaxHandles),
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_cNumHandles(0),
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_pHandles(0)
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{
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_pHandles = new HANDLE[_cMaxHandles];
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CWaitForMultipleObjects::AddEvent, public
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//
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// Purpose: Adds an handle to be waited on
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//
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// Arguments: [hEvent] -- Handle to add
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//
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// History: 07-Jun-94 DwightKr Created
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//
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//--------------------------------------------------------------------------
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inline void CWaitForMultipleObjects::AddEvent( HANDLE hEvent )
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{
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Win4Assert( _cNumHandles < _cMaxHandles );
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_pHandles[ _cNumHandles ] = hEvent;
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_cNumHandles++;
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CWaitForMultipleObjects::Wait, public
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//
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// Purpose: Waits for one of the handles to be signalled, or timeout
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//
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// History: 07-Jun-94 DwightKr Created
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//
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//--------------------------------------------------------------------------
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inline DWORD CWaitForMultipleObjects::Wait( DWORD dwTimeout )
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{
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return WaitForMultipleObjects( _cNumHandles,
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_pHandles,
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FALSE,
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dwTimeout );
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CWaitForMultipleObjects::Get, public
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//
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// Synopsis: Retrieves the I-th handle
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//
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// Arguments: [i] -- i
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//
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// Returns: The I-th handle
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//
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// History: 23-Jun-98 KyleP Created
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//
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//--------------------------------------------------------------------------
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inline HANDLE CWaitForMultipleObjects::Get( DWORD i ) const
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{
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Win4Assert( i < _cNumHandles );
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return _pHandles[ i ];
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}
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