time_posix.h 文件参考

浏览源代码.

结构体
struct	ksigevent

函数
STATIC INLINE BOOL	ValidTimeSpec (const struct timespec *tp)
STATIC INLINE UINT32	OsTimeSpec2Tick (const struct timespec *tp)
STATIC INLINE VOID	OsTick2TimeSpec (struct timespec *tp, UINT32 tick)
int	OsTimerCreate (clockid_t, struct ksigevent *__restrict, timer_t *__restrict)
void	OsAdjTime (void)

函数说明

OsAdjTime()

void OsAdjTime

(

void

)

OsTick2TimeSpec()

STATIC INLINE VOID OsTick2TimeSpec	(	struct timespec *	tp,
		UINT32	tick
	)

在文件 time_posix.h 第 81 行定义.

{
    UINT64 ns = ((UINT64)tick * OS_SYS_NS_PER_SECOND) / LOSCFG_BASE_CORE_TICK_PER_SECOND;
    tp->tv_sec = (time_t)(ns / OS_SYS_NS_PER_SECOND);
    tp->tv_nsec = (long)(ns % OS_SYS_NS_PER_SECOND);
}

这是这个函数的调用关系图:

OsTimerCreate()

int OsTimerCreate	(	clockid_t	clockID,
		struct ksigevent *	__restrict,
		timer_t *	__restrict
	)

在文件 time.c 第 842 行定义.

{
    UINT32 ret;
    UINT16 swtmrID;
    swtmr_proc_arg *arg = NULL;
    int signo;
#ifdef LOSCFG_SECURITY_VID
    UINT16 vid;
#endif
 
    if ((clockID != CLOCK_REALTIME) || (timerID == NULL)) {
        errno = EINVAL;
        return -1;
    }
 
    signo = evp ? evp->sigev_signo : SIGALRM;
    if (signo > SIGRTMAX || signo < 1) {
        errno = EINVAL;
        return -1;
    }
    if (evp && (evp->sigev_notify != SIGEV_SIGNAL && evp->sigev_notify != SIGEV_THREAD_ID)) {
        errno = ENOTSUP;
        return -1;
    }
 
    arg = (swtmr_proc_arg *)malloc(sizeof(swtmr_proc_arg));
    if (arg == NULL) {
        errno = ENOMEM;
        return -1;
    }
 
    arg->tid = evp ? evp->sigev_tid : 0;
    arg->sigev_signo = signo;
    arg->pid = LOS_GetCurrProcessID();
    arg->sigev_value.sival_ptr = evp ? evp->sigev_value.sival_ptr : NULL;
    ret = LOS_SwtmrCreate(1, LOS_SWTMR_MODE_ONCE, SwtmrProc, &swtmrID, (UINTPTR)arg);
    if (ret != LOS_OK) {
        errno = (ret == LOS_ERRNO_SWTMR_MAXSIZE) ? EAGAIN : EINVAL;
        free(arg);
        return -1;
    }
 
#ifdef LOSCFG_SECURITY_VID
    vid = AddNodeByRid(swtmrID);
    if (vid == MAX_INVALID_TIMER_VID) {
        free(arg);
        (VOID)LOS_SwtmrDelete(swtmrID);
        return -1;
    }
    swtmrID = vid;
#endif
    *timerID = (timer_t)(UINTPTR)swtmrID;
    return 0;
}

函数调用图:

这是这个函数的调用关系图:

OsTimeSpec2Tick()

STATIC INLINE UINT32 OsTimeSpec2Tick

(

const struct timespec *

tp

)

在文件 time_posix.h 第 68 行定义.

{
    UINT64 tick, ns;
 
    ns = (UINT64)tp->tv_sec * OS_SYS_NS_PER_SECOND + tp->tv_nsec;
    /* Round up for ticks */
    tick = (ns * LOSCFG_BASE_CORE_TICK_PER_SECOND + (OS_SYS_NS_PER_SECOND - 1)) / OS_SYS_NS_PER_SECOND;
    if (tick > LOS_WAIT_FOREVER) {
        tick = LOS_WAIT_FOREVER;
    }
    return (UINT32)tick;
}

这是这个函数的调用关系图:

ValidTimeSpec()

STATIC INLINE BOOL ValidTimeSpec

(

const struct timespec *

tp

)

在文件 time_posix.h 第 53 行定义.

{
    /* Fail a NULL pointer */
    if (tp == NULL) {
        return FALSE;
    }
 
    /* Fail illegal nanosecond values */
    if ((tp->tv_nsec < 0) || (tp->tv_nsec >= OS_SYS_NS_PER_SECOND) || (tp->tv_sec < 0)) {
        return FALSE;
    }
 
    return TRUE;
}

这是这个函数的调用关系图: