osdTime.h File Reference

#include <unistd.h>

Include dependency graph for osdTime.h:

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Classes
struct	timespec
	Defined by POSIX Real Time. More...

Functions
LIBCOM_API void epicsStdCall	convertDoubleToWakeTime (double timeout, struct timespec *wakeTime)

Function Documentation

LIBCOM_API void epicsStdCall convertDoubleToWakeTime	(	double	timeout,
		struct timespec *	wakeTime
	)

Definition at line 68 of file osdTime.cpp.

{
    mach_timespec_t now;
    struct timespec wait;

    if (timeout < 0.0)
        timeout = 0.0;
    else if (timeout > 60 * 60 * 24 * 3652.5)
        timeout = 60 * 60 * 24 * 3652.5;    /* 10 years */

    clock_get_time(host_clock, &now);

    wait.tv_sec  = static_cast< time_t >(timeout);
    wait.tv_nsec = static_cast< long >((timeout - (double)wait.tv_sec) * 1e9);

    wakeTime->tv_sec  = now.tv_sec + wait.tv_sec;
    wakeTime->tv_nsec = now.tv_nsec + wait.tv_nsec;
    if (wakeTime->tv_nsec >= 1000000000L) {
        wakeTime->tv_nsec -= 1000000000L;
        ++wakeTime->tv_sec;
    }
}