256 lines
5.5 KiB
C++
256 lines
5.5 KiB
C++
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//////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2000-2001 Microsoft Corporation
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//
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// Module Name:
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// TaskKeepMTAAlive.cpp
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//
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// Description:
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// Keep MTA Alive Task implementation.
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//
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// Maintained By:
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// Galen Barbee (GalenB) 17-APR-2000
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//
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//////////////////////////////////////////////////////////////////////////////
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#include "pch.h"
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#include "TaskKeepMTAAlive.h"
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DEFINE_THISCLASS("CTaskKeepMTAAlive")
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// ************************************************************************
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//
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// Constructor / Destructor
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//
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// ************************************************************************
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//////////////////////////////////////////////////////////////////////////////
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//
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// HRESULT
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// CTaskKeepMTAAlive::S_HrCreateInstance(
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// IUnknown ** ppunkOut
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// )
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//
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//////////////////////////////////////////////////////////////////////////////
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HRESULT
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CTaskKeepMTAAlive::S_HrCreateInstance(
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IUnknown ** ppunkOut
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)
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{
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TraceFunc( "" );
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Assert( ppunkOut != NULL );
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HRESULT hr;
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CTaskKeepMTAAlive * ptkmtaa = new CTaskKeepMTAAlive;
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// Self terminating - no need to track
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TraceMemoryDelete( ptkmtaa, FALSE );
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if ( ptkmtaa != NULL )
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{
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hr = THR( ptkmtaa->Init() );
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if ( SUCCEEDED( hr ) )
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{
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hr = THR( ptkmtaa->TypeSafeQI( IUnknown, ppunkOut ) );
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}
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ptkmtaa->Release();
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}
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else
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{
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hr = E_OUTOFMEMORY;
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}
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HRETURN( hr );
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} // S_HrCreateInstance()
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//////////////////////////////////////////////////////////////////////////////
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//
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// CTaskKeepMTAAlive::CTaskKeepMTAAlive( void )
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//
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//////////////////////////////////////////////////////////////////////////////
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CTaskKeepMTAAlive::CTaskKeepMTAAlive( void )
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: m_cRef( 1 )
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{
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TraceFunc( "" );
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InterlockedIncrement( &g_cObjects );
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Assert( m_fStop == false );
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TraceFuncExit();
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} // CTaskKeepMTAAlive()
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP
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// CTaskKeepMTAAlive::Init( void )
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CTaskKeepMTAAlive::Init( void )
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{
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TraceFunc( "" );
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HRESULT hr = S_OK;
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HRETURN( hr );
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} // Init()
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//////////////////////////////////////////////////////////////////////////////
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//
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// CTaskKeepMTAAlive::~CTaskKeepMTAAlive()
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//
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//////////////////////////////////////////////////////////////////////////////
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CTaskKeepMTAAlive::~CTaskKeepMTAAlive()
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{
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TraceFunc( "" );
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InterlockedDecrement( &g_cObjects );
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TraceFuncExit();
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} // ~CTaskKeepMTAAlive()
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// ************************************************************************
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//
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// IUnknown
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//
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// ************************************************************************
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP
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// CTaskKeepMTAAlive::QueryInterface(
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// REFIID riid,
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// LPVOID *ppv
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// )
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CTaskKeepMTAAlive::QueryInterface(
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REFIID riid,
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LPVOID *ppv
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)
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{
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TraceQIFunc( riid, ppv );
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HRESULT hr = E_NOINTERFACE;
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if ( IsEqualIID( riid, IID_IUnknown ) )
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{
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*ppv = static_cast< IDoTask * >( this );
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hr = S_OK;
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} // if: IUnknown
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else if ( IsEqualIID( riid, IID_IDoTask ) )
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{
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*ppv = TraceInterface( __THISCLASS__, IDoTask, this, 0 );
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hr = S_OK;
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} // else if: IDoTask
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if ( SUCCEEDED( hr ) )
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{
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((IUnknown*) *ppv)->AddRef();
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} // if: success
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QIRETURN( hr, riid );
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} // QueryInterface()
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP_(ULONG)
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// CTaskKeepMTAAlive::AddRef( void )
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP_(ULONG)
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CTaskKeepMTAAlive::AddRef( void )
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{
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TraceFunc( "[IUnknown]" );
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InterlockedIncrement( &m_cRef );
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RETURN( m_cRef );
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} // AddRef()
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP_(ULONG)
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// CTaskKeepMTAAlive::Release( void )
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP_(ULONG)
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CTaskKeepMTAAlive::Release( void )
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{
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TraceFunc( "[IUnknown]" );
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InterlockedDecrement( &m_cRef );
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if ( m_cRef )
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RETURN( m_cRef );
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TraceDo( delete this );
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RETURN( 0 );
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} // Release()
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//****************************************************************************
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//
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// IDoTask
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//
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//****************************************************************************
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP
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// CTaskKeepMTAAlive::BeginTask()
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CTaskKeepMTAAlive::BeginTask()
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{
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TraceFunc( "[IDoTask]" );
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HRESULT hr = S_OK;
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MSG msg;
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while ( GetMessage( &msg, NULL, 0, 0 ) && !m_fStop )
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{
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DispatchMessage( &msg );
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}
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HRETURN( hr );
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} //*** BeginTask
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//////////////////////////////////////////////////////////////////////////////
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//
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// STDMETHODIMP
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// CTaskKeepMTAAlive::StopTask( void )
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//
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//////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP
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CTaskKeepMTAAlive::StopTask( void )
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{
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TraceFunc( "[IDoTask]" );
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HRESULT hr = S_OK;
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m_fStop = true;
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HRETURN( hr );
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} //*** StopTask
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