关于如何在驱动程序中获得当前的时间

我的驱动程序要想获得当前的系统时间，我用time函数编辑出错，我也把time.h包进去了，不行。请问有什么别的方法吗？急！谢谢！

我在软件驱动精华区中有篇文章，你可以参考一下。

谢谢LitteSW大虾的回复，但我写的是WDM驱动，我是用kerneldriver
作为工具的，你的代码中的VTD_get_data_time()还行吗？
我可不可以直接调用sdk的函数呢，如：getsystemtime()?若不行的话，你还是给我指条明路吧。急！鞠躬！

我以前也做过WDM下的。
我找一下，晚一点贴上来。

我做了个类。在调用时：
TIME_ITEM strData;
CTime  MyTime;

MyTime.GetDate(&strData);


其中类定义和结构定义如下：

#ifndef __TIME_ITEM__
#define __TIME_ITEM__
typedef struct
{ // 日期信息
ULONG dwYears;
ULONG dwMonths;
ULONG dwThisDays;
// 时间信息
ULONG dwHours;
ULONG dwMinutes;
ULONG dwSeconds;
ULONG dwMSeconds;
} TIME_ITEM, *PTIME_ITEM;
#endif

class CTime  
{
public:
CTime();
virtual ~CTime();

public:
void GetDate(PTIME_ITEM pDate);
void CaculateDate(LARGE_INTEGER dwDays);

public:
ULONG Days() { return m_dwDays; }
LARGE_INTEGER GetLGTime() { return m_lgiTime; }

ULONG MilliSeconds() { return m_dwMilliSeconds; }
ULONG Seconds() { return m_dwSeconds; }
ULONG Minutes() { return m_dwMinutes; }
ULONG Hours() { return m_dwHours; }
ULONG Years() { return m_dwYears; }
ULONG Months() { return m_dwMonths; }
ULONG ThisDays() { return m_dwThisDays; }

void SetDays(ULONG dw) { m_dwDays = dw; }
void SetLGTime(LARGE_INTEGER dw){ m_lgiTime = dw; }
void SetMilliSeconds(ULONG dw) { m_dwMilliSeconds = dw; }
void SetSeconds(ULONG dw) { m_dwSeconds = dw; }
void SetMinutes(ULONG dw) { m_dwMinutes = dw; }
void SetHours(ULONG dw) { m_dwHours = dw; }
void SetYears(ULONG dw) { m_dwYears = dw; }
void SetMonths(ULONG dw) { m_dwMonths = dw; }
void SetThisDays(ULONG dw) { m_dwThisDays = dw; }

public:
LARGE_INTEGER m_lgiTime; // since midnight
ULONG m_dwDays; // since jan,1,1601
ULONG m_dwMilliSeconds;
ULONG m_dwSeconds;
ULONG m_dwMinutes;
ULONG m_dwHours;
ULONG m_dwYears;
ULONG m_dwMonths;
ULONG m_dwThisDays;

};

Time.cpp文件如下：

#include "Time.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
/////////////////////////////////////////////////////////////////////////////
// CTime class member functions

CTime::CTime()
{
// set milliseconds since midnight
LARGE_INTEGER lgiTime;

KeQuerySystemTime(&lgiTime);

SetLGTime(lgiTime);

} // End of CTime::CTime()

CTime::~CTime()
{

} // End of CTime::~CTime()

void CTime::GetDate(PTIME_ITEM pDate)
{
// get year/month/day
CaculateDate(GetLGTime());

// fill PDATE_ITEM struct
pDate->dwYears = Years();
pDate->dwMonths = Months();
pDate->dwThisDays = ThisDays();
pDate->dwHours = Hours();
pDate->dwMinutes = Minutes();
pDate->dwSeconds = Seconds();
pDate->dwMSeconds = MilliSeconds();

} // End of CTime::GetDate()

void CTime::CaculateDate(LARGE_INTEGER lgiTime)
{
int iMonDay[2][13] = {  {0,31,59,90,120,151,181,212,243,273,304,334,365},
{0,31,60,91,121,152,182,213,244,274,305,335,366}};
int iDays, iYear, iMonth;
int iHours, iMinutes, iSeconds, iMSeconds;
int iLeapYear = 0;

// from 1601.1.1
for ( iYear = 1601; ; ) {
if ( ( iYear % 400 == 0) || ( iYear % 100 != 0) && ( iYear % 4 == 0 ) ) iLeapYear = 1;
if ( lgiTime.QuadPart <= (365 + iLeapYear) * 864000000000) break;
lgiTime.QuadPart -= (365 + iLeapYear) * 864000000000;
iYear++;
iLeapYear = 0;
}
SetYears(ULONG(iYear));

for ( iMonth = 0; ; iMonth++ ){
if ( (iMonDay[iLeapYear][iMonth] * 864000000000) >= lgiTime.QuadPart ){
lgiTime.QuadPart  -= iMonDay[iLeapYear][iMonth-1] * 864000000000;
break;
}
}
SetMonths(ULONG(iMonth));
    
iDays = (ULONG)(lgiTime.QuadPart / 864000000000 + 1);
//    SetThisDays(ULONG(iDays));
lgiTime.QuadPart = lgiTime.QuadPart % 864000000000;

iHours = (ULONG)(lgiTime.QuadPart / 36000000000);
if (iHours > 15)
{
iDays += 1;
SetThisDays(ULONG(iDays));
iHours -= 16;
SetHours(ULONG(iHours));
} else
{
SetThisDays(ULONG(iDays));
iHours += 8;
SetHours(ULONG(iHours));
}
lgiTime.QuadPart = lgiTime.QuadPart % 36000000000;

iMinutes = (ULONG)(lgiTime.QuadPart / 600000000);
SetMinutes(ULONG(iMinutes));
lgiTime.QuadPart = lgiTime.QuadPart % 600000000;

iSeconds = (ULONG)(lgiTime.QuadPart/ 10000000);
SetSeconds((ULONG)iSeconds);
lgiTime.QuadPart = lgiTime.QuadPart % 10000000;

iMSeconds = (ULONG)(lgiTime.QuadPart/ 100000);
SetMilliSeconds((ULONG)iMSeconds);

} // End of CTime::CaculateDate()


BTW：源码复上，别忘了给分。
哈哈！！！

今天下午没事，又看了一遍，发现有错，不好意思，已改正。




[LitteSW 编辑于 2001-09-07 21:37]