Leaked source code of windows server 2003
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/* ----------------------------------------------------------------------
Module: ULS.DLL (Service Provider)
File: sppqueue.h
Content: This file contains the pending item/queue objects definition.
History:
10/15/96 Chu, Lon-Chan [lonchanc]
Created.
Copyright (c) Microsoft Corporation 1996-1997
---------------------------------------------------------------------- */
#ifndef _ILS_SP_PRQUEUE_H_
#define _ILS_SP_PRQUEUE_H_
#include <pshpack8.h>
/* ------------- Request Scheduler --------------- */
#define WM_ILS_REFRESH ((ULONG) -1)
typedef struct tagReqMarshal
{
struct tagReqMarshal *next;
ULONG cbTotalSize; // for debug checking
BYTE *pb; // running pointer
ULONG uRespID; // for cancel and error notification
ULONG uNotifyMsg;
ULONG cParams;
DWORD_PTR aParams[1];
// more data follows...
}
MARSHAL_REQ;
MARSHAL_REQ *MarshalReq_Alloc ( ULONG uNotifyMsg, ULONG cbSize, ULONG cParams );
HRESULT MarshalReq_SetParam ( MARSHAL_REQ *p, ULONG nIndex, DWORD_PTR dwParam, ULONG cbParamSize );
DWORD_PTR MarshalReq_GetParam ( MARSHAL_REQ *p, ULONG nIndex );
HRESULT MarshalReq_SetParamServer ( MARSHAL_REQ *p, ULONG nIndex, SERVER_INFO *pServer, ULONG cbServer );
enum { INVALID_RESP_ID = -1 };
class SP_CRequestQueue
{
friend class SP_CResponseQueue;
friend HRESULT UlsLdap_Cancel ( ULONG );
public:
SP_CRequestQueue ( VOID );
~SP_CRequestQueue ( VOID );
HRESULT Enter ( MARSHAL_REQ *p );
VOID Schedule ( VOID );
VOID Dispatch ( MARSHAL_REQ *p );
HRESULT Cancel ( ULONG uRespID );
BOOL IsEmptyQueue ( VOID ) { return (m_ItemList == NULL); }
BOOL IsAnyReqInQueue ( VOID ) { return (m_ItemList != NULL); }
BOOL IsCurrentRequestCancelled ( VOID ) { return (m_uCurrOpRespID == INVALID_RESP_ID); }
protected:
VOID LockCurrOp ( VOID ) { EnterCriticalSection (&m_csCurrOp); }
VOID UnlockCurrOp ( VOID ) { LeaveCriticalSection (&m_csCurrOp); }
VOID WriteLock ( VOID ) { EnterCriticalSection (&m_csReqQ); }
VOID WriteUnlock ( VOID ) { LeaveCriticalSection (&m_csReqQ); }
private:
VOID ReadLock ( VOID ) { WriteLock (); }
VOID ReadUnlock ( VOID ) { WriteUnlock (); }
MARSHAL_REQ *m_ItemList;
CRITICAL_SECTION m_csReqQ;
ULONG m_uCurrOpRespID;
CRITICAL_SECTION m_csCurrOp;
};
extern SP_CRequestQueue *g_pReqQueue;
/* ------------- Response Scheduler --------------- */
#define ILS_MIN_RESP_TIMEOUT ((ULONG) (20 * 1000)) // 20 seconds
#define ILS_DEF_RESP_TIMEOUT ((ULONG) (90 * 1000)) // 90 seconds
#define ILS_BK_RESP_TIMEOUT_SEC 90 // 90 seconds
extern ULONG g_uResponseTimeout;
#define ILS_MIN_RESP_POLL_PERIOD ((ULONG) 50) // 50 ms
#define ILS_DEF_RESP_POLL_PERIOD ((ULONG) 100) // 100 ms per PatLam's experiment
extern ULONG g_uResponsePollPeriod;
#define Minute2TickCount(m) ((m) * 60 * 1000)
#define ILS_DEF_REFRESH_MINUTE 2
#define ILS_DEF_REFRESH_MARGIN_MINUTE 2
typedef struct
{
// ldap specific
LDAP *ld;
ULONG uMsgID[2];
// notification specific
ULONG uRespID;
ULONG uNotifyMsg;
// object specific
HANDLE hObject; // user, app, prot object
// mutual dependency specific
HRESULT hrDependency; // S_OK if not used
// for extended attributes
ULONG cAnyAttrs;
TCHAR *pszAnyAttrNameList;
// for resolving protocol
TCHAR *pszProtNameToResolve;
}
RESP_INFO;
class SP_CResponse
{
friend class SP_CResponseQueue;
public:
SP_CResponse ( VOID );
~SP_CResponse ( VOID );
LDAPMessage *GetResult ( VOID ) { return m_pLdapMsg; }
RESP_INFO *GetRespInfo ( VOID ) { return &m_ri; }
SP_CSession *GetSession ( VOID ) { return m_pSession; }
LDAP *GetLd ( VOID ) { return m_ri.ld; }
protected:
VOID EnterResult ( LDAPMessage *pLdapMsg );
VOID EnterRequest ( SP_CSession *pSession, RESP_INFO *pInfo )
{
m_pSession = pSession;
m_ri = *pInfo;
m_tcTimeout = m_pSession->GetServerTimeoutInTickCount ();
}
SP_CResponse *GetNext ( VOID ) { return m_next; }
VOID SetNext ( SP_CResponse *pItem ) { m_next = pItem; }
private:
VOID UpdateLastModifiedTime ( VOID ) { m_tcLastModifiedTime = GetTickCount (); }
BOOL IsExpired ( VOID ) { return (GetTickCount () - m_tcLastModifiedTime >= m_tcTimeout); }
RESP_INFO m_ri;
SP_CSession *m_pSession;
LDAPMessage *m_pLdapMsg;
SP_CResponse *m_next;
ULONG m_tcLastModifiedTime;
ULONG m_tcTimeout;
};
class SP_CResponseQueue
{
friend class SP_CRequestQueue;
friend HRESULT UlsLdap_Cancel ( ULONG );
public:
SP_CResponseQueue ( VOID );
~SP_CResponseQueue ( VOID );
HRESULT EnterRequest ( SP_CSession *pSession, RESP_INFO *pInfo );
HRESULT PollLdapResults ( LDAP_TIMEVAL *pTimeout );
HRESULT Cancel ( ULONG uRespID );
protected:
VOID WriteLock ( VOID ) { EnterCriticalSection (&m_csRespQ); }
VOID WriteUnlock ( VOID ) { LeaveCriticalSection (&m_csRespQ); }
private:
VOID ReadLock ( VOID ) { WriteLock (); }
VOID ReadUnlock ( VOID ) { WriteUnlock (); }
SP_CResponse *m_ItemList;
CRITICAL_SECTION m_csRespQ;
};
extern SP_CResponseQueue *g_pRespQueue;
VOID FillDefRespInfo ( RESP_INFO *pInfo, ULONG uRespID, LDAP *ld, ULONG uMsgID, ULONG u2ndMsgID );
/* ------------- Refersh Message Scheduler --------------- */
class SP_CRefreshScheduler
{
public:
SP_CRefreshScheduler ( VOID );
~SP_CRefreshScheduler ( VOID );
HRESULT SendRefreshMessages ( UINT uTimerID );
HRESULT EnterClientObject ( SP_CClient *pClient );
HRESULT RemoveClientObject ( SP_CClient *pClient ) { return RemoveObject ((VOID *) pClient); }
#ifdef ENABLE_MEETING_PLACE
HRESULT EnterMtgObject ( SP_CMeeting *pMtg );
HRESULT RemoveMtgObject ( SP_CMeeting *pMtg ) { return RemoveObject ((VOID *) pMtg); }
#endif
protected:
private:
VOID WriteLock ( VOID ) { EnterCriticalSection (&m_csRefreshScheduler); }
VOID WriteUnlock ( VOID ) { LeaveCriticalSection (&m_csRefreshScheduler); }
VOID ReadLock ( VOID ) { WriteLock (); }
VOID ReadUnlock ( VOID ) { WriteUnlock (); }
typedef enum { UNK_OBJ, CLIENT_OBJ, MTG_OBJ } PrivateObjType;
typedef struct tagREFRESH_ITEM
{
INT nIndex;
PrivateObjType ObjectType;
VOID *pObject;
ULONG uTTL;
struct tagREFRESH_ITEM *next;
}
REFRESH_ITEM;
INT TimerID2Index ( UINT uTimerID ) { return (INT) uTimerID - KEEP_ALIVE_TIMER_BASE; }
UINT Index2TimerID ( INT nIndex ) { return (UINT) (nIndex + KEEP_ALIVE_TIMER_BASE); }
VOID *AllocItem ( BOOL fNeedLock );
HRESULT EnterObject ( PrivateObjType ObjectType, VOID *pObject, ULONG uInitialTTL );
HRESULT RemoveObject ( VOID *pObject );
REFRESH_ITEM *m_ListHead;
CRITICAL_SECTION m_csRefreshScheduler;
};
extern SP_CRefreshScheduler *g_pRefreshScheduler;
#include <poppack.h>
#endif // _ILS_SP_PRQUEUE_H_