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675 lines
22 KiB
675 lines
22 KiB
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1996 - 1999
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//
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// File: srequest.hxx
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//
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// Contents: Server side of catalog and query requests
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//
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// Classes: CPipeServer
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// CRequestServer
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// CServerItem
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// CRequestQueue
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//
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// History: 16-Sep-96 dlee Created.
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//
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//--------------------------------------------------------------------------
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#pragma once
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#include <circq.hxx>
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#include <thash.hxx>
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#include <cisvcex.hxx>
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#define CI_PIPE_TESTING CIDBG
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//+-------------------------------------------------------------------------
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//
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// Class: CPipeServer
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//
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// Synopsis: Base class for a server named pipe
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//
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// History: 16-Sep-96 dlee Created.
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//
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//--------------------------------------------------------------------------
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class CPipeServer
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{
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public:
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CPipeServer( const WCHAR * pwcName,
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ULONG cmsDefaultClientTimeout,
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SECURITY_DESCRIPTOR * pSecurityDescriptor );
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~CPipeServer()
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{
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prxDebugOut(( DEB_ITRACE, "~destructing pipe 0x%x\n", _hPipe ));
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BOOL fCloseOk = CloseHandle( _hPipe );
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Win4Assert( fCloseOk );
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}
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void Write( void * pv,
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unsigned cb,
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LPOVERLAPPED_COMPLETION_ROUTINE pRoutine )
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{
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prxDebugOut(( DEB_ITRACE, "WriteFileEx cb %d this 0x%x pipe 0x%x\n",
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cb, this, _hPipe ));
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// hEvent is documented as a good place to pass user data
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_overlapped.hEvent = (HANDLE) this;
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if ( ! WriteFileEx( _hPipe, pv, cb, &_overlapped, pRoutine ) )
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THROW( CException() );
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}
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void Read( void * pv,
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unsigned cb,
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LPOVERLAPPED_COMPLETION_ROUTINE pRoutine )
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{
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prxDebugOut(( DEB_ITRACE, "ReadFileEx cb %d this 0x%x, pipe 0x%x\n",
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cb, this, _hPipe ));
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// hEvent is documented as a good place to pass user data
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_overlapped.hEvent = (HANDLE) this;
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if ( ! ReadFileEx( _hPipe, pv, cb, &_overlapped, pRoutine ) )
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THROW( CException() );
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}
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void WriteSync( void *pv, DWORD cb );
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BYTE * ReadRemainingSync( void *pvSoFar, DWORD & cbSoFar );
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BOOL Connect();
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BOOL Disconnect()
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{
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prxDebugOut(( DEB_ITRACE, "disconnecting from pipe 0x%x\n", _hPipe ));
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return DisconnectNamedPipe( _hPipe );
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}
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HANDLE GetEvent() { return _event.GetHandle(); }
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void ResetEvent() { _event.Reset(); }
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HANDLE GetPipe() { return _hPipe; }
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void CancelIO() { CancelIo( _hPipe ); }
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private:
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OVERLAPPED _overlapped; // 2 uint_ptr + 3 dwords
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HANDLE _hPipe;
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CEventSem _event;
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CEventSem _eventWrite;
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};
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//+-------------------------------------------------------------------------
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//
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// Class: CRequestServer
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//
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// Synopsis: Class for a catalog/query server connection
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//
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// History: 16-Sep-96 dlee Created.
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// 21-Oct-99 KLam Added FixVariantPointers and Win64 data
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//
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//--------------------------------------------------------------------------
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const LONGLONG sigCRequestServer = 0x2076727374737172; // "rqstsrv"
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class CRequestQueue;
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class CWorkQueue;
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class CClientDocStore;
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enum RequestState { stateContinue,
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stateDisconnect,
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statePending };
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struct SCWorkItem
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{
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ECiSvcActionType type; // state to be changed to
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ICiCDocStore * pDocStore; // pointer to docstore to be shutdown
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BOOL fNoQueryRW; // TRUE if NoQuery and read/write
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// NoQuery and read-only otherwise
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WCHAR * StoppedCat; // name of stopped catalog (to be restarted)
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// NULL if no catalog is stopped
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}; //work item for state change events
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class CRequestServer : public CPipeServer, public PWorkItem
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{
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public:
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CRequestServer( const WCHAR * pwcPipe,
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ULONG cmsDefaultClientTimeout,
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CRequestQueue & requestQueue,
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CWorkQueue & workQueue );
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void AddRef() { InterlockedIncrement( & _cRefs ); }
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void Release();
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BOOL IsAvailable()
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{
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// if the refcount is 1, it's available ( not in DoIt() )
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return ( 1 == _cRefs ) && !IsBeingRemoved();
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}
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BOOL NoOutstandingAPCs()
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{
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return pipeStateNone == _state ||
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pipeStatePending == _state;
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}
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void DoIt( CWorkThread * pThread );
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void DeferredAPC();
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void Cleanup();
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void CompleteNotification( DWORD dwChangeType );
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void QueryQuiesced( BOOL fSuccess, SCODE sc );
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void SetPQuery( PQuery * pQuery )
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{
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Win4Assert( 0 == _pQuery );
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_pQuery = pQuery;
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}
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HANDLE GetWorkerThreadHandle()
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{
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return _hWorkThread;
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}
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static void WINAPI CancelAPCRoutine( DWORD_PTR dwParam );
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void SetLastTouchedTime(DWORD dwLastTouched) { _dwLastTouched = dwLastTouched; }
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DWORD GetLastTouchedTime() { return _dwLastTouched; }
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void BeingRemoved( CEventSem * pevtDone ) { _pevtDone = pevtDone; };
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BOOL IsBeingRemoved() const { return 0 != _pevtDone; }
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ICiCDocStore * GetDocStore() { return _xDocStore.GetPointer(); }
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private:
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static void WINAPI QuiesceAPCRoutine( DWORD_PTR dwParam );
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void Quiesce();
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enum PipeState { pipeStateNone = 10,
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pipeStateRead,
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pipeStateWrite,
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pipeStatePending };
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static void WINAPI APCRoutine( DWORD dwError,
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DWORD cbTransferred,
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LPOVERLAPPED pOverlapped );
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RequestState HandleRequestNoThrow( DWORD cbRequest,
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DWORD & cbToWrite );
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#ifdef _WIN64
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void FixColumns ( CTableColumnSet * pCols32 );
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void FixRows ( BYTE * pbReply,
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BYTE * pbResults,
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ULONG cbResults,
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ULONG_PTR ulpClientBase,
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ULONG cRows,
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ULONG cbRowWidth );
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void FixVariantPointers ( PROPVARIANT32 *pVar32,
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PROPVARIANT *pVar64,
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BYTE *pbResults,
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ULONG_PTR ulClientBase );
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#endif
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void DoAPC( DWORD dwError, DWORD cbTransferred );
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~CRequestServer()
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{
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prxDebugOut(( DEB_ITRACE, "deleting server pipe 0x%x\n", GetPipe() ));
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Win4Assert( NoOutstandingAPCs() );
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Win4Assert( 0 == _cRefs );
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Win4Assert( 0 == _pQuery );
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Win4Assert( 0 == _pWorkThread );
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Win4Assert( INVALID_HANDLE_VALUE == _hWorkThread );
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Win4Assert( 0 == _pevtDone );
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}
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int GetClientVersion() { return pmCiVersion( _iClientVersion ); }
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BOOL IsClient64() { return IsCi64( _iClientVersion ); }
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BOOL IsClientRemote() { return _fClientIsRemote; }
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void * _Buffer() { return _abBuffer; }
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void * _ActiveBuffer()
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{
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if ( _xTempBuffer.IsNull() )
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return _abBuffer;
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return _xTempBuffer.Get();
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}
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DWORD _BufferSize() { return sizeof _abBuffer; }
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void FormScopeRestriction( CiMetaData & eType, XRestriction & rst );
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void FreeQuery()
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{
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// insures only one thread will delete the PQuery
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PQuery * pInitial = (PQuery *) InterlockedCompareExchangePointer(
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(void **) &_pQuery,
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NULL,
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_pQuery );
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delete pInitial; // may be 0
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#ifdef _WIN64
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// Free the column descriptions
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_xCols64.Free();
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_xCols32.Free();
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#endif
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}
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typedef RequestState (CRequestServer:: * ProxyMessageFunction)(
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DWORD cbRequest,
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DWORD & cbToWrite );
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static const ProxyMessageFunction _aMsgFunctions[ cProxyMessages ];
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static const BOOL _afImpersonate[ cProxyMessages ];
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RequestState DoObsolete( DWORD, DWORD & );
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RequestState DoConnect( DWORD, DWORD & );
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RequestState DoDisconnect( DWORD, DWORD & );
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RequestState DoCreateQuery( DWORD, DWORD & );
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RequestState DoFreeCursor( DWORD, DWORD & );
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RequestState DoGetRows( DWORD, DWORD & );
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RequestState DoRatioFinished( DWORD, DWORD & );
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RequestState DoCompareBmk( DWORD, DWORD & );
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RequestState DoGetApproximatePosition( DWORD, DWORD & );
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RequestState DoSetBindings( DWORD, DWORD & );
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RequestState DoGetNotify( DWORD, DWORD & );
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RequestState DoSendNotify( DWORD, DWORD & );
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RequestState DoSetWatchMode( DWORD, DWORD & );
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RequestState DoGetWatchInfo( DWORD, DWORD & );
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RequestState DoShrinkWatchRegion( DWORD, DWORD & );
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RequestState DoRefresh( DWORD, DWORD & );
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RequestState DoGetQueryStatus( DWORD, DWORD & );
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RequestState DoCiState( DWORD, DWORD & );
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RequestState DoBeginCacheTransaction( DWORD, DWORD & );
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RequestState DoSetupCache( DWORD, DWORD & );
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RequestState DoEndCacheTransaction( DWORD, DWORD & );
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RequestState DoForceMerge( DWORD, DWORD & );
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RequestState DoAbortMerge( DWORD, DWORD & );
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RequestState DoFetchValue( DWORD, DWORD & );
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RequestState DoWorkIdToPath( DWORD, DWORD & );
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RequestState DoUpdateDocuments( DWORD, DWORD & );
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RequestState DoGetQueryStatusEx( DWORD, DWORD & );
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RequestState DoRestartPosition( DWORD, DWORD & );
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RequestState DoStopAsynch( DWORD, DWORD & );
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RequestState DoStartWatching( DWORD, DWORD & );
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RequestState DoStopWatching( DWORD, DWORD & );
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RequestState DoSetCatState( DWORD, DWORD & );
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PipeState _state; // none, read, write, or pending
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long _cRefs; // refcount
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int _iClientVersion; // version of the client
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BOOL _fClientIsRemote; // TRUE if client is remote
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XInterface<ICiCDocStore> _xDocStore; // Set if a docstore is found
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PQuery * _pQuery; // set if a query is active
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CWorkThread * _pWorkThread; // worker thread for this server
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HANDLE _hWorkThread; // worker thread for this server
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XArray<BYTE> _xTempBuffer; // buffer for big reads/writes
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XArray<WCHAR> _xClientMachine; // name of the client's machine
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XArray<WCHAR> _xClientUser; // name of the client
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XArray<BYTE> _xFetchedValue; // state for pmFetchValue
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DWORD _cbFetchedValueSoFar; // state for pmFetchValue
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DWORD _cbPendingWrite; // bytes to write at completion
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SCODE _scPendingStatus; // status code for completed op
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DWORD _dwDeferredAPCError; // completion status of deferred APC
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DWORD _cbDeferredAPCTransferred; // deferred APC byte count
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CRequestQueue & _requestQueue; // the 1 and only request queue
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CWorkQueue & _workQueue; // the 1 and only work queue
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XInterface<IDBProperties> _xDbProperties; // properties from connect
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DWORD _dwLastTouched;
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CEventSem * _pevtDone; // set when the instance dies
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#ifdef _WIN64
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unsigned _cbRowWidth64;
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unsigned _cbRowWidth32;
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XPtr<CTableColumnSet> _xCols64;
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XPtr<CTableColumnSet> _xCols32;
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#endif
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// this buffer must be 8-byte aligned and large enough to read
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// any request except pmCreateQuery and pmSetBindings
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LONGLONG _abBuffer[ 2048 / sizeof LONGLONG ];
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};
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//+-------------------------------------------------------------------------
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//
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// Class: XAPCWorkerThread
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//
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// Synopsis: Refcounts a worker thread and sets the "processing APC"
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// state.
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//
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// History: 17-Jul-00 dlee Created.
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//
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//--------------------------------------------------------------------------
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class XAPCWorkerThread
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{
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public:
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XAPCWorkerThread( CWorkQueue & workQueue, CWorkThread * pWorkThread ) :
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_workQueue( workQueue ),
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_pWorkThread( pWorkThread )
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{
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_workQueue.AddRef( _pWorkThread );
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_pWorkThread->SetProcessingAPC( TRUE );
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}
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~XAPCWorkerThread()
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{
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_pWorkThread->SetProcessingAPC( FALSE );
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_workQueue.Release( _pWorkThread );
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}
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private:
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CWorkQueue & _workQueue;
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CWorkThread * _pWorkThread;
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};
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//+-------------------------------------------------------------------------
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//
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// Class: CServerItem
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//
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// Synopsis: Encapsulates a CRequestServer for use in the circular queue,
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// which requires many of the methods implemented below.
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//
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// History: 16-Sep-96 dlee Created.
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//
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//--------------------------------------------------------------------------
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class CServerItem
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{
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public:
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CServerItem() : _pServer( 0 ) {}
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CServerItem( CRequestServer *pServer ) : _pServer( pServer ) {}
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~CServerItem()
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{
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Free();
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}
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void Create( const WCHAR * pwcName,
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ULONG cmsDefaultClientTimeout,
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CRequestQueue & requestQueue,
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CWorkQueue & workQueue )
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{
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Win4Assert( 0 == _pServer );
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_pServer = new CRequestServer( pwcName,
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cmsDefaultClientTimeout,
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requestQueue,
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workQueue );
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}
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void Acquire( CServerItem & item )
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{
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item = *this;
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_pServer = 0;
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}
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CServerItem & operator = (CServerItem & src )
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{
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Win4Assert( 0 == _pServer );
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_pServer = src._pServer;
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src._pServer = 0;
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return *this;
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}
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CRequestServer * Get()
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{
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return _pServer;
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}
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void Free()
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{
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if ( 0 != _pServer )
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{
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_pServer->Release();
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_pServer = 0;
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}
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}
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CRequestServer * Acquire()
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{
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CRequestServer *p = _pServer;
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_pServer = 0;
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return p;
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}
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private:
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CRequestServer * _pServer;
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};
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//+-------------------------------------------------------------------------
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//
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// Class: CRequestQueue
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//
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// Synopsis: Handles the main work of the service and the caching of
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// request servers.
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//
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// History: 16-Sep-96 dlee Created.
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// 30-Mar-98 kitmanh Added new flag _fNetPause
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// 14-Apr-98 kitmanh Renamed _evtStopWork to
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// _evtStateChange and StopWork() to
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// WakeForStateChange()
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// 14-Apr-98 kitmanh Added a DynArrayInPlace,
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// StateChangeArray for work items
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// related to state change
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//
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//--------------------------------------------------------------------------
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class CRequestQueue
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{
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public:
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CRequestQueue( unsigned cMaxCachedRequests,
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unsigned cMaxRequests,
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unsigned cmsDefaultClientTimeout,
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BOOL fMinimizeWorkingSet,
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unsigned cMinClientIdleTime,
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unsigned cmsStartupDelay,
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const GUID & guidDocStoreClient );
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~CRequestQueue()
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{
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ClearSCArray();
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#if CI_PIPE_TESTING
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if ( 0 != _hTraceDll )
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{
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FreeLibrary( _hTraceDll );
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_hTraceDll = 0;
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}
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#endif // CI_PIPE_TESTING
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}
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void DoWork();
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void RecycleRequestServerNoThrow( CRequestServer *pServer );
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void WakeForStateChange() { _evtStateChange.Set(); }
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void IncrementPendingItems() { InterlockedIncrement( &_cPendingItems ); }
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void DecrementPendingItems() { InterlockedDecrement( &_cPendingItems ); }
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void AddToListNoThrow( CRequestServer * pServer )
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{
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CLock lock( _mutex );
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_tableActiveServers.AddEntry( pServer );
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}
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void RemoveFromListNoThrow( CRequestServer * pServer )
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{
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CLock lock( _mutex );
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BOOL fDeleted = _tableActiveServers.DeleteEntry( pServer );
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Win4Assert( fDeleted );
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}
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BOOL IsShutdown() const { return _fShutdown; }
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BOOL IsNetPause() const { return _fNetPause; }
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BOOL IsNetContinue() const { return _fNetContinue; }
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BOOL IsNetStop() const { return _fNetStop; }
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// Reset some member variables and reset the _evtStateChange event for restarting
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// up from NetPause or NetContinue
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void ReStart()
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{
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CLock lock( _mutex );
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_fShutdown = FALSE;
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_fNetPause = FALSE;
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_fNetContinue = FALSE;
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_fNetStop = FALSE;
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ClearSCArray();
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_evtStateChange.Reset();
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}
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void WrestReqServerFromIdleClient();
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CMutexSem & GetTheMutex() { return _mutex; }
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void SetNetPause()
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{
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CLock lock( _mutex );
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_fNetPause = TRUE;
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}
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void SetNetContinue()
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{
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CLock lock( _mutex );
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_fNetContinue = TRUE;
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}
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void SetNetStop()
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{
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CLock lock( _mutex );
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_fNetStop = TRUE;
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}
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SECURITY_DESCRIPTOR * GetSecurityDescriptor()
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{
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Win4Assert( !_xSecurityDescriptor.IsNull() );
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return (SECURITY_DESCRIPTOR *) _xSecurityDescriptor.GetPointer();
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}
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void AddSCItem( SCWorkItem * newItem, WCHAR const * wcStoppedCat )
|
|
{
|
|
XPtrST<WCHAR> xBuf;
|
|
|
|
if ( wcStoppedCat )
|
|
{
|
|
// Validate it looks like a good path
|
|
|
|
unsigned cwc = wcslen( wcStoppedCat );
|
|
|
|
if ( cwc >= MAX_PATH )
|
|
THROW( CException( E_INVALIDARG ) );
|
|
|
|
xBuf.Set( new WCHAR[ cwc + 1 ] );
|
|
|
|
newItem->StoppedCat = xBuf.GetPointer();
|
|
|
|
RtlCopyMemory( newItem->StoppedCat, wcStoppedCat, sizeof WCHAR * ( cwc + 1 ) );
|
|
}
|
|
else
|
|
newItem->StoppedCat = 0;
|
|
|
|
CLock lockx( _mutex );
|
|
_stateChangeArray.Add( *newItem, _stateChangeArray.Count() );
|
|
xBuf.Acquire();
|
|
}
|
|
|
|
DWORD SCArrayCount()
|
|
{
|
|
CLock lockx( _mutex );
|
|
return _stateChangeArray.Count();
|
|
}
|
|
|
|
SCWorkItem * GetSCItem( DWORD iSCArray )
|
|
{
|
|
return &(_stateChangeArray.Get( iSCArray ));
|
|
}
|
|
|
|
void ClearSCArray()
|
|
{
|
|
for ( unsigned i = 0; i < _stateChangeArray.Count(); i++ )
|
|
{
|
|
SCWorkItem * WorkItem = GetSCItem(i);
|
|
|
|
if ( WorkItem->StoppedCat )
|
|
{
|
|
delete [] WorkItem->StoppedCat;
|
|
}
|
|
}
|
|
|
|
_stateChangeArray.Clear();
|
|
}
|
|
|
|
BOOL AreDocStoresOpen() const { return _fDocStoresOpen; }
|
|
|
|
ICiCDocStoreLocator * DocStoreLocator();
|
|
|
|
#if CI_PIPE_TESTING
|
|
|
|
typedef SCODE (* PipeTraceServerBeforeCall) ( HANDLE hPipe,
|
|
ULONG cbWrite,
|
|
void * pvWrite,
|
|
ULONG & rcbWritten,
|
|
void *& rpvWritten );
|
|
|
|
typedef SCODE (* PipeTraceServerAfterCall) ( HANDLE hPipe,
|
|
ULONG cbWrite,
|
|
void * pvWrite,
|
|
ULONG cbWritten,
|
|
void * pvWritten );
|
|
|
|
typedef SCODE (* PipeTraceServerReadCall) ( HANDLE hPipe,
|
|
ULONG cbRead,
|
|
void * pvRead );
|
|
|
|
PipeTraceServerBeforeCall _pTraceBefore;
|
|
PipeTraceServerAfterCall _pTraceAfter;
|
|
PipeTraceServerReadCall _pTraceRead;
|
|
HINSTANCE _hTraceDll;
|
|
|
|
BOOL IsPipeTracingEnabled() { return 0 != _hTraceDll; }
|
|
|
|
#endif // CI_PIPE_TESTING
|
|
|
|
private:
|
|
void ShutdownActiveServers( ICiCDocStore * pDocStore );
|
|
void Shutdown();
|
|
void OpenAllDocStores();
|
|
void FreeCachedServers();
|
|
|
|
BOOL _fShutdown;
|
|
BOOL _fMinimizeWorkingSet;
|
|
BOOL _fNetPause;
|
|
BOOL _fNetContinue;
|
|
BOOL _fNetStop;
|
|
LONG _cBusyItems;
|
|
LONG _cPendingItems;
|
|
DWORD _cmsDefaultClientTimeout;
|
|
DWORD _cMaxSimultaneousRequests;
|
|
DWORD _cmsStartupDelay;
|
|
CAutoEventSem _event;
|
|
CEventSem _evtStateChange;
|
|
CWorkQueue _workQueue;
|
|
CDynArrayInPlace<SCWorkItem> _stateChangeArray;
|
|
CMutexSem _mutex;
|
|
THashTable<CRequestServer *> _tableActiveServers;
|
|
TFifoCircularQueue<CServerItem> _queueCachedServers;
|
|
DWORD _cMinClientIdleTime;
|
|
XArray<BYTE> _xSecurityDescriptor;
|
|
GUID _guidDocStoreClient;
|
|
BOOL _fDocStoresOpen;
|
|
};
|
|
|