163 lines
2.4 KiB
C++
163 lines
2.4 KiB
C++
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/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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sink.cxx
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Abstract:
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Implements the ADMIN_SINK object.
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Author:
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Keith Moore (keithmo) 05-Feb-1997
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Revision History:
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--*/
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#include "precomp.hxx"
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#pragma hdrstop
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//
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// Private constants.
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//
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//
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// Private types.
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//
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//
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// Private globals.
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//
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//
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// Private prototypes.
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//
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//
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// Public functions.
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//
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ADMIN_SINK::ADMIN_SINK()
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{
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//
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// Put everything into a known state.
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//
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m_StateChangeEvent = NULL;
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} // ADMIN_SINK::ADMIN_SINK
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ADMIN_SINK::~ADMIN_SINK()
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{
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//
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// Zap the state change event.
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//
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if( m_StateChangeEvent != NULL ) {
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CloseHandle( m_StateChangeEvent );
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m_StateChangeEvent = NULL;
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}
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} // ADMIN_SINK::~ADMIN_SINK
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HRESULT
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ADMIN_SINK::Initialize(
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IN IUnknown * Object
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)
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{
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HRESULT result;
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result = BASE_ADMIN_SINK::Initialize( Object );
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if( SUCCEEDED(result) ) {
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m_StateChangeEvent = CreateEvent(
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NULL, // lpEventAttributes
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FALSE, // bManualReset
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FALSE, // bInitialState
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NULL // lpName
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);
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if( m_StateChangeEvent == NULL ) {
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DWORD err = GetLastError();
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result = HRESULT_FROM_WIN32( err );
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}
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}
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return result;
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} // ADMIN_SINK::Initialize
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HRESULT
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STDMETHODCALLTYPE
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ADMIN_SINK::SinkNotify(
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IN DWORD NumElements,
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IN MD_CHANGE_OBJECT ChangeList[]
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)
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{
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DWORD numIds;
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DWORD *idList;
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//
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// Scan the change list. If MD_SERVER_STATE has changed, set the
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// change event so the polling loop will exit.
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//
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for( ; NumElements > 0 ; NumElements--, ChangeList++ ) {
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numIds = ChangeList->dwMDNumDataIDs;
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idList = ChangeList->pdwMDDataIDs;
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for( ; numIds > 0 ; numIds--, idList++ ) {
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if( *idList == MD_SERVER_STATE ) {
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SetEvent( m_StateChangeEvent );
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break;
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}
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}
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}
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return NO_ERROR;
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} // ADMIN_SINK::SinkNotify
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DWORD
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ADMIN_SINK::WaitForStateChange(
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IN DWORD Timeout
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)
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{
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return WaitForSingleObject(
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m_StateChangeEvent,
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Timeout
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);
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} // ADMIN_SINK::WaitForStateChange
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//
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// Private functions.
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//
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