117 lines
4.1 KiB
C++
117 lines
4.1 KiB
C++
/*===========================================================================
|
|
FILE:
|
|
Event.h
|
|
|
|
DESCRIPTION:
|
|
Declaration of cEvent class
|
|
|
|
PUBLIC CLASSES AND METHODS:
|
|
WaitOnMultipleEvents
|
|
cEvent
|
|
Functionality to mimic Windows events using UNIX pipes (enhanced
|
|
somewhat to allow one to specify a DWORD value to pass through
|
|
when signalling the event)
|
|
|
|
WARNING:
|
|
This class is not designed to be thread safe
|
|
|
|
Copyright (c) 2013, The Linux Foundation. All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
* Neither the name of The Linux Foundation nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
===========================================================================*/
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Pragmas
|
|
//---------------------------------------------------------------------------
|
|
#pragma once
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Include Files
|
|
//---------------------------------------------------------------------------
|
|
#include "StdAfx.h"
|
|
#include <vector>
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Prototype
|
|
//---------------------------------------------------------------------------
|
|
|
|
class cEvent;
|
|
|
|
/*=========================================================================*/
|
|
// Free methods
|
|
/*=========================================================================*/
|
|
|
|
// Wait for any of the events to be set and return the value
|
|
int WaitOnMultipleEvents(
|
|
std::vector <cEvent *> events,
|
|
DWORD timeoutMS,
|
|
DWORD & val,
|
|
DWORD & eventIndex );
|
|
|
|
/*=========================================================================*/
|
|
// Class cEvent
|
|
/*=========================================================================*/
|
|
class cEvent
|
|
{
|
|
public:
|
|
// Constructor
|
|
cEvent();
|
|
|
|
// Destructor
|
|
~cEvent();
|
|
|
|
// Set/signal the event with the specified value
|
|
int Set( DWORD val );
|
|
|
|
// Wait for the event to be signalled and return the read in value
|
|
int Wait(
|
|
DWORD timeoutMS,
|
|
DWORD & val );
|
|
|
|
// Read and discard all values currently in the pipe
|
|
void Clear();
|
|
|
|
protected:
|
|
// Close pipe (used in errors or normal exit)
|
|
int Close();
|
|
|
|
// Read from the pipe
|
|
int Read( DWORD & val );
|
|
|
|
/* Internal error status */
|
|
int mError;
|
|
|
|
/* Internal pipes */
|
|
int mPipes[2];
|
|
|
|
// WaitOnMultipleEvents gets full access
|
|
friend int WaitOnMultipleEvents(
|
|
std::vector <cEvent *> events,
|
|
DWORD timeoutMS,
|
|
DWORD & val,
|
|
DWORD & eventIndex );
|
|
};
|
|
|