timer.h

来自「红外接口串口仿真」· C头文件 代码 · 共 67 行

#ifndef _LINUX_TIMER_H
#define _LINUX_TIMER_H

#include <ntddk.h>
#include <ndis.h>

#include <linux/types.h>

#define HZ          1000
#define jiffies     getTicks()

struct timer_list {
    unsigned long data;
    void (*function)(unsigned long);

    // Windows kernel specific
    NDIS_TIMER  ndisTimer;
};

extern VOID TimerWrapper(PVOID dummy1, PVOID context, PVOID dummy2, PVOID dummy3);

__inline unsigned long getTicks()
{
    LARGE_INTEGER   time;


    KeQuerySystemTime(&time);
    return (unsigned long)(time.QuadPart/10000);
}

__inline void init_timer(struct timer_list* timer)
{
    NdisInitializeTimer(&timer->ndisTimer, TimerWrapper, (PVOID)timer);
}

__inline int mod_timer(struct timer_list* timer, unsigned long expires)
{
    NdisSetTimer(&timer->ndisTimer, expires);
    return 0;
}

__inline int del_timer(struct timer_list* timer)
{
    BOOLEAN canceled;


    NdisCancelTimer(&timer->ndisTimer, &canceled);
    return 0;
}

__inline int timer_pending (const struct timer_list* timer)
{
    return TRUE;
}

__inline unsigned long msecs_to_jiffies(const unsigned int m)
{
#if HZ <= 1000 && !(1000 % HZ)
    return (m + (1000 / HZ) - 1) / (1000 / HZ);
#elif HZ > 1000 && !(HZ % 1000)
    return m * (HZ / 1000);
#else
    return (m * HZ + 999) / 1000;
#endif
}
 
#endif