#include "time_ops.h"

#include <time.h>

#include <stdlib.h>

#include <string.h>

#include <stdio.h>

#include <errno.h>

int64_t time_now_ms(void) {

    struct timespec ts;

    clock_gettime(CLOCK_REALTIME, &ts);

    return (int64_t)ts.tv_sec * 1000 + (int64_t)(ts.tv_nsec / 1000000);

}

bool time_sleep_ms(int64_t ms, char **err) {

    if (ms < 0) {

        *err = strdup("sleep() expects non-negative milliseconds");

        return false;

    }

    struct timespec ts;

    ts.tv_sec = (time_t)(ms / 1000);

    ts.tv_nsec = (long)((ms % 1000) * 1000000);

    if (nanosleep(&ts, NULL) != 0 && errno != EINTR) {

        *err = strdup("sleep: nanosleep failed");

        return false;

    }

    return true;

}