117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
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/*++
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<EFBFBD> 1998 Seagate Software, Inc. All rights reserved.
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Module Name:
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Wsbdbsys.h
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Abstract:
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The CWsbDbSys class.
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Author:
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Ron White [ronw] 7-May-1997
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Revision History:
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--*/
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#ifndef _WSBDBSYS_
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#define _WSBDBSYS_
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#include "wsbdb.h"
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#include "wsbdbses.h"
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#include "resource.h"
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#define IDB_DB_FILE_SUFFIX L"jet"
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// Default no. of Jet sessions per process is currently 128 which may not be enough for HSM
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#define IDB_MAX_NOF_SESSIONS 32
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/*++
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Class Name:
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CWsbDbSys
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Class Description:
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The IDB system object. One must be created for each process
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that wants to use the IDB system. The Init method needs to be
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called after the object is created.
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--*/
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class CWsbDbSys :
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public IWsbDbSys,
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public IWsbDbSysPriv,
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public CComObjectRoot,
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public CComCoClass<CWsbDbSys,&CLSID_CWsbDbSys>
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{
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friend class CWsbDb;
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friend class CWsbDbSes;
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public:
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CWsbDbSys() {}
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BEGIN_COM_MAP( CWsbDbSys )
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COM_INTERFACE_ENTRY( IWsbDbSys )
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COM_INTERFACE_ENTRY( IWsbDbSysPriv )
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END_COM_MAP( )
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DECLARE_REGISTRY_RESOURCEID( IDR_CWsbDbSys )
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// CComObjectRoot
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public:
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STDMETHOD(FinalConstruct)(void);
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void FinalRelease(void);
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// IWsbDbSys
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public:
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STDMETHOD(Backup)(OLECHAR* path, ULONG flags);
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STDMETHOD(Init)(OLECHAR* path, ULONG flags);
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STDMETHOD(Terminate)(void);
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STDMETHOD(NewSession)(IWsbDbSession** ppSession);
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STDMETHOD(GetGlobalSession)(IWsbDbSession** ppSession);
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STDMETHOD(Restore)(OLECHAR* fromPath, OLECHAR* toPath);
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STDMETHOD(IncrementChangeCount)(void);
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// IWsbDbSysPriv
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public:
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STDMETHOD(DbAttachedAdd)(OLECHAR* name, BOOL attach);
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STDMETHOD(DbAttachedEmptySlot)(void);
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STDMETHOD(DbAttachedInit)(void);
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STDMETHOD(DbAttachedRemove)(OLECHAR* name);
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// Internal
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STDMETHOD(AutoBackup)(void);
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// Data
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private:
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HANDLE m_AutoThread;
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CWsbStringPtr m_BackupPath; // File path for backup directory
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CWsbStringPtr m_InitPath; // File path from Init() call
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LONG m_ChangeCount; // Count of DB changes since last backup
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FILETIME m_LastChange; // Time of last DB change
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CComPtr<IWsbDbSession> m_pWsbDbSession; // A global Jet session for this Jet instance
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HANDLE m_BackupEvent; // An event to sync Jet backups
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HANDLE m_terminateEvent; // An event for signaling termination to the auto-backup thread
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BOOL m_bLogErrors; // Whether to log errors or not
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BOOL m_jet_initialized;
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JET_INSTANCE m_jet_instance;
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};
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HRESULT wsb_db_jet_check_error(LONG jstat, char *fileName, DWORD lineNo);
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HRESULT wsb_db_jet_fix_path(OLECHAR* path, OLECHAR* ext, char** new_path);
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// Capture FILE/LINE info on a JET error
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#define jet_error(_jstat) \
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wsb_db_jet_check_error(_jstat, __FILE__, __LINE__)
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#endif // _WSBDBSYS_
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