mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
129 lines
3.4 KiB
129 lines
3.4 KiB
/*++
|
|
|
|
Copyright (C) 1996-2001 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
Abstract:
|
|
|
|
History:
|
|
|
|
--*/
|
|
|
|
#ifndef __MSGSVC_H__
|
|
#define __MSGSVC_H__
|
|
|
|
#include <wmimsg.h>
|
|
#include <unk.h>
|
|
#include <sync.h>
|
|
|
|
class CMsgServiceRecord;
|
|
|
|
/*********************************************************************
|
|
CMsgService
|
|
**********************************************************************/
|
|
|
|
class CMsgService : public CUnkInternal // will be singleton
|
|
{
|
|
class XService : CImpl<IWmiMessageService, CMsgService>
|
|
{
|
|
public:
|
|
|
|
STDMETHOD(Add)( IWmiMessageReceiverSink* pSink,
|
|
HANDLE* phFileOverlapped,
|
|
DWORD dwFlags,
|
|
void** ppHdl );
|
|
|
|
STDMETHOD(Remove)( void* pHdl );
|
|
|
|
XService( CMsgService* pObj )
|
|
: CImpl<IWmiMessageService, CMsgService> ( pObj ) { }
|
|
|
|
} m_XService;
|
|
|
|
CCritSec m_cs;
|
|
long m_cSvcRefs;
|
|
HANDLE m_hThread;
|
|
BOOL m_bAsyncInit;
|
|
|
|
static ULONG WINAPI AsyncServiceFunc( void* pCtx );
|
|
static ULONG WINAPI SyncServiceFunc( void* pCtx );
|
|
|
|
HRESULT EnsureService( BOOL bAsync );
|
|
HRESULT CheckShutdown();
|
|
|
|
protected:
|
|
|
|
virtual HRESULT AsyncInitialize() = 0;
|
|
|
|
//
|
|
// This call notifies the overlapped impl that it is must take care
|
|
// of the first receive on the message service record. It also
|
|
// gives the overlapped impl a chance to do something with the
|
|
// the file handle associated with overlapped i/o. For example,
|
|
// completion port impl will add the file handle to the port.
|
|
//
|
|
virtual HRESULT AsyncAddOverlappedFile( HANDLE hOverlapped,
|
|
CMsgServiceRecord* pRecord ) = 0;
|
|
|
|
//
|
|
// responsible for causing all threads to break out of their svc loop.
|
|
// returns S_OK if it was successful.
|
|
//
|
|
virtual HRESULT AsyncShutdown( DWORD cThreads ) = 0;
|
|
|
|
//
|
|
// initializes overlapped struct and calls sink's receive().
|
|
// passes result from sink's receive back.
|
|
//
|
|
virtual HRESULT AsyncReceive( CMsgServiceRecord* pRecord ) = 0;
|
|
|
|
//
|
|
// returns S_FALSE if a notify should not be performed by worker thread
|
|
// returns S_OK if a notify should be performed by worker thread
|
|
//
|
|
virtual HRESULT AsyncWaitForCompletion( DWORD dwTimeout,
|
|
CMsgServiceRecord** ppRec) = 0;
|
|
|
|
public:
|
|
|
|
CMsgService( CLifeControl* pControl );
|
|
virtual ~CMsgService();
|
|
|
|
void* GetInterface( REFIID riid );
|
|
|
|
HRESULT Add( CMsgServiceRecord* pRec, HANDLE hFileOvrlapd, DWORD dwFlags );
|
|
|
|
HRESULT Add( CMsgServiceRecord* pRec, DWORD dwFlags );
|
|
|
|
HRESULT Remove( void* pHdl );
|
|
};
|
|
|
|
/***************************************************************************
|
|
CMsgServiceNT - implements async part of MsgService using Completion ports.
|
|
****************************************************************************/
|
|
|
|
class CMsgServiceNT : public CMsgService
|
|
{
|
|
HANDLE m_hPort;
|
|
|
|
public:
|
|
|
|
CMsgServiceNT( CLifeControl* pControl );
|
|
~CMsgServiceNT();
|
|
|
|
HRESULT AsyncAddOverlappedFile( HANDLE hOverlappedFile,
|
|
CMsgServiceRecord* pRecord );
|
|
HRESULT AsyncInitialize();
|
|
HRESULT AsyncShutdown( DWORD cThreads );
|
|
HRESULT AsyncReceive( CMsgServiceRecord* pRecord );
|
|
HRESULT AsyncWaitForCompletion(DWORD dwTimeout, CMsgServiceRecord** ppRec);
|
|
};
|
|
|
|
#endif __MSGSVC_H__
|
|
|
|
|
|
|
|
|
|
|
|
|