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/*
* Misc functions
* Copyright (C) 2010 Unix Solutions Ltd.
*
* Released under MIT license.
* See LICENSE-MIT.txt for license terms.
*/
#include <sys/time.h>
#include <string.h>
#include <errno.h>
int xstrcmp(char *a, char *b) {
if (!a && b) return 1;
if (!b && a) return 1;
if (a == b) return 0;
return strcmp(a, b);
}
unsigned long long timediff_nsec(struct timespec *start_ts, struct timespec *end_ts) {
unsigned long long nsec;
nsec = (end_ts->tv_sec - start_ts->tv_sec) * 1000000000;
nsec += (end_ts->tv_nsec - start_ts->tv_nsec);
return nsec;
}
unsigned long long timeval_diff_usec(struct timeval *start_ts, struct timeval *end_ts) {
unsigned long long usec;
usec = (end_ts->tv_sec - start_ts->tv_sec) * 1000000;
usec += (end_ts->tv_usec - start_ts->tv_usec);
return usec;
}
unsigned long long timeval_diff_msec(struct timeval *start_ts, struct timeval *end_ts) {
unsigned long long msec;
msec = (end_ts->tv_sec - start_ts->tv_sec) * 1000;
msec += (end_ts->tv_usec - start_ts->tv_usec) / 1000;
return msec;
}
unsigned long long timeval_diff_sec(struct timeval *start_ts, struct timeval *end_ts) {
unsigned long long sec;
sec = (end_ts->tv_sec - start_ts->tv_sec);
sec += (end_ts->tv_usec - start_ts->tv_usec) / 1000000;
return sec;
}
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