415 lines
8.4 KiB
C++
415 lines
8.4 KiB
C++
/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name :
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datetime.hxx
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Abstract:
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datetime header
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Author:
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MuraliK
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--*/
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#ifndef _DATETIME_H_
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#define _DATETIME_H_
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#include <pudebug.h>
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#include <readmost.hxx>
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#include <irtlmisc.h>
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#define ENABLE_AUX_COUNTERS ( 1)
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inline bool
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SameDate(
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const SYSTEMTIME* pst1,
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const SYSTEMTIME* pst2)
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{
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// Same (wYear, wMonth), (wDayOfWeek, wDay)
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// Ignore (wHour, wMinute), (wSecond, wMilliseconds)
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return (((*(DWORD*) &pst1->wDayOfWeek) == (*(DWORD*) &pst2->wDayOfWeek))
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&& ((*(DWORD*) &pst1->wYear) == (*(DWORD*) &pst2->wYear)));
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}
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inline bool
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SameMinute(
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const SYSTEMTIME* pst1,
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const SYSTEMTIME* pst2)
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{
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// Same (wYear, wMonth), (wDayOfWeek, wDay), (wHour, wMinute)
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// Ignore (wSecond, wMilliseconds)
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// return memcmp(pst1, pst2, 6 * sizeof(WORD)) == 0;
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return (((*(DWORD*) &pst1->wHour) == (*(DWORD*) &pst2->wHour))
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&& ((*(DWORD*) &pst1->wDayOfWeek) == (*(DWORD*) &pst2->wDayOfWeek))
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&& ((*(DWORD*) &pst1->wYear) == (*(DWORD*) &pst2->wYear)));
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}
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typedef union {
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FILETIME ft;
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unsigned __int64 u64;
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} FILETIME_UINT64;
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#define FILETIME_1_SECOND 10000000
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#define FILETIME_1_MILLISECOND 10000
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//
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// Seconds lookup table
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//
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dllexp LPCTSTR Month3CharNames(DWORD dwMonth);
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dllexp LPCTSTR DayOfWeek3CharNames(DWORD dwDayOfWeek);
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extern "C"
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BOOL
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IISGetCurrentTime(
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OUT FILETIME* pft,
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OUT SYSTEMTIME* pst);
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#define IISGetCurrentTimeAsFileTime(pft) IISGetCurrentTime(pft, NULL)
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#define IISGetCurrentTimeAsSystemTime(pst) IISGetCurrentTime(NULL, pst)
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# define MAX_FORMATTED_DATETIME_LEN (50)
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struct dllexp DATETIME_FORMAT_ENTRY {
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SYSTEMTIME m_stDateTime;
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INT m_cchOffsetSeconds; // Offset of two-char seconds field
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DWORD m_cbDateTime; // Total length
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INT m_cchDateLen; // contains length of date portion alone
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CHAR m_rgchDateTime[ MAX_FORMATTED_DATETIME_LEN];
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VOID CopyFormattedData(IN const SYSTEMTIME * pst,
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OUT CHAR * pchDateTime) const;
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BOOL IsHit( IN const SYSTEMTIME * pst) const
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{
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//
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// Ignore seconds & milli-seconds during comparison
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//
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return SameMinute(&m_stDateTime, pst);
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}
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}; // struct DATETIME_FORMAT_ENTRY
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typedef DATETIME_FORMAT_ENTRY * PDFT_ENTRY;
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#ifdef IRTL_EXPIMP
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#pragma warning (disable: 4231)
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IRTL_EXPIMP template class IRTL_DLLEXP CDataCache<DATETIME_FORMAT_ENTRY>;
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#pragma warning (default: 4231)
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#endif // IRTL_EXPIMP
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class IRTL_DLLEXP CDFTCache : public CDataCache<DATETIME_FORMAT_ENTRY>
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{
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public:
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CDFTCache()
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{
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const_cast<PDFT_ENTRY>(&m_tData)->m_stDateTime.wYear = 0;
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}
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BOOL IsHit( IN const SYSTEMTIME * pst) const
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{
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// We need a memory barrier before multiword accesses
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_ReadSequence();
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// The weird const_cast syntax is necessitated by the volatile
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// attribute on m_tData.
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return const_cast<PDFT_ENTRY>(&m_tData)->IsHit(pst);
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}
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BOOL CopyFormattedData(IN const SYSTEMTIME * pst,
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OUT CHAR * pchDateTime) const;
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DWORD DateTimeChars() const
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{
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return const_cast<PDFT_ENTRY>(&m_tData)->m_cbDateTime;
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}
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INT OffsetSeconds() const
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{
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return const_cast<PDFT_ENTRY>(&m_tData)->m_cchOffsetSeconds;
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}
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LPCSTR FormattedBuffer() const
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{
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return const_cast<PDFT_ENTRY>(&m_tData)->m_rgchDateTime;
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}
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WORD Seconds() const
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{
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return const_cast<PDFT_ENTRY>(&m_tData)->m_stDateTime.wSecond;
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}
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};
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class dllexp CACHED_DATETIME_FORMATS {
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public:
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enum {
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CACHE_SIZE = (1<<4), // maintain 16-minute history; must be power of 2
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CACHE_MASK = CACHE_SIZE-1
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};
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CACHED_DATETIME_FORMATS( VOID );
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virtual ~CACHED_DATETIME_FORMATS(VOID)
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{
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}
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DWORD
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GetFormattedDateTime(
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IN CONST SYSTEMTIME * pst,
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OUT PCHAR pchDateTime
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);
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DWORD
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GetFormattedCurrentDateTime(
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OUT PCHAR pchDateTime
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);
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virtual
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VOID GenerateDateTimeString(
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IN PDFT_ENTRY pdft,
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IN const SYSTEMTIME * pst) = 0;
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private:
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// Private copy ctor and op= to prevent compiler synthesizing them.
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// Must provide (bad) implementation because we export instantiations.
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CACHED_DATETIME_FORMATS(const CACHED_DATETIME_FORMATS&)
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{*(BYTE*)NULL;}
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CACHED_DATETIME_FORMATS& operator=(const CACHED_DATETIME_FORMATS&)
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{return *(CACHED_DATETIME_FORMATS*)NULL;}
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# if ENABLE_AUX_COUNTERS
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public:
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LONG m_nMisses;
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LONG m_nAccesses;
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private:
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# endif // ENABLE_AUX_COUNTERS
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volatile LONG m_idftCurrent;
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CDFTCache m_rgDateTimes[CACHE_SIZE];
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}; // class CACHED_DATETIME_FORMATS
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typedef CACHED_DATETIME_FORMATS *PCACHED_DATETIME_FORMATS;
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//
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// Derived classes
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//
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class dllexp W3_DATETIME_CACHE : public CACHED_DATETIME_FORMATS {
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public:
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VOID GenerateDateTimeString(
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IN PDFT_ENTRY pdft,
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IN const SYSTEMTIME * pst);
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};
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typedef W3_DATETIME_CACHE *PW3_DATETIME_CACHE;
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class dllexp ASCLOG_DATETIME_CACHE : public CACHED_DATETIME_FORMATS {
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private:
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DWORD m_tickCount;
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SYSTEMTIME m_systime;
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public:
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ASCLOG_DATETIME_CACHE( ) {
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m_tickCount = GetTickCount();
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GetLocalTime( &m_systime );
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}
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VOID GenerateDateTimeString(
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IN PDFT_ENTRY pdft,
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IN const SYSTEMTIME * pst
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);
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inline
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VOID SetLocalTime(
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OUT PSYSTEMTIME pst
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) {
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DWORD tmpTime = GetTickCount();
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if ( tmpTime - m_tickCount >= 1000) {
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GetLocalTime( &m_systime );
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m_tickCount = tmpTime;
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}
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*pst = m_systime;
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}
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};
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typedef ASCLOG_DATETIME_CACHE *PASCLOG_DATETIME_CACHE;
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class dllexp EXTLOG_DATETIME_CACHE : public CACHED_DATETIME_FORMATS {
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private:
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DWORD m_tickCount;
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SYSTEMTIME m_systime;
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public:
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EXTLOG_DATETIME_CACHE( ) {
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m_tickCount = GetTickCount();
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IISGetCurrentTimeAsSystemTime( &m_systime );
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}
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VOID GenerateDateTimeString(
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IN PDFT_ENTRY pdft,
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IN const SYSTEMTIME * pst);
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inline
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VOID SetSystemTime(
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OUT PSYSTEMTIME pst
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) {
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DWORD tmpTime = GetTickCount();
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if ( tmpTime - m_tickCount >= 1000) {
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IISGetCurrentTimeAsSystemTime( &m_systime );
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m_tickCount = tmpTime;
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}
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*pst = m_systime;
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}
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};
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typedef EXTLOG_DATETIME_CACHE *PEXTLOG_DATETIME_CACHE;
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dllexp
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CHAR *
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FlipSlashes(
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CHAR * pszPath
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);
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//
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// Time-Related APIs
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//
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dllexp
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BOOL
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SystemTimeToGMT(
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IN const SYSTEMTIME & st,
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OUT CHAR * pszBuff,
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IN DWORD cbBuff
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);
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dllexp
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BOOL
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SystemTimeToGMTEx(
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IN const SYSTEMTIME & st,
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OUT CHAR * pszBuff,
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IN DWORD cbBuff,
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IN DWORD csecOffset = 0
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);
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dllexp
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BOOL
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FileTimeToGMT(
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IN const FILETIME & ft,
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OUT CHAR * pszBuff,
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IN DWORD cbBuff
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);
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dllexp
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BOOL
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FileTimeToGMTEx(
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IN const FILETIME & ft,
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OUT CHAR * pszBuff,
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IN DWORD cbBuff,
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IN DWORD csecOffset = 0
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);
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dllexp
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BOOL
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NtLargeIntegerTimeToSystemTime(
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IN const LARGE_INTEGER & liTime,
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OUT SYSTEMTIME * pst
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);
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dllexp
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BOOL
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NtLargeIntegerTimeToLocalSystemTime(
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IN const LARGE_INTEGER * liTime,
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OUT SYSTEMTIME * pst
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);
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dllexp
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BOOL
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NtSystemTimeToLargeInteger(
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IN const SYSTEMTIME * pst,
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OUT LARGE_INTEGER * pli
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);
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dllexp
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BOOL
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StringTimeToFileTime(
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IN const CHAR * pszTime,
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OUT LARGE_INTEGER * pliTime
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);
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dllexp
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DWORD
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IsLargeIntegerToDecimalChar(
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IN const LARGE_INTEGER * pliValue,
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OUT LPSTR pchBuffer
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);
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BOOL
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ZapRegistryKey(
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HKEY hkey,
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LPCSTR pszRegPath
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);
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HKEY
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CreateKey(
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IN HKEY RootKey,
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IN LPCSTR KeyName,
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IN LPCSTR KeyValue
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);
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BOOL
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IsIPAddressLocal(
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IN DWORD LocalIP,
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IN DWORD RemoteIP
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);
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BOOL
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IISCreateDirectory(
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IN LPCSTR DirectoryName,
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IN BOOL fAllowNetDrives
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);
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#endif // _DATETIME_H_
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