| /*=========================================================================== |
| 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) 2011, Code Aurora Forum. 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 Code Aurora Forum 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 ); |
| }; |
| |