time-util.h revision 2753f93e5d9cd5fbd773540de3772d182fcced5e
#ifndef TIME_UTIL_H
#define TIME_UTIL_H
#include <sys/time.h> /* for struct timeval */
/* Returns -1 if tv1<tv2, 1 if tv1>tv2, 0 if they're equal. */
int timeval_cmp(const struct timeval *tv1, const struct timeval *tv2);
/* Returns tv1-tv2 in milliseconds. */
int timeval_diff_msecs(const struct timeval *tv1, const struct timeval *tv2);
/* Returns tv1-tv2 in microseconds. */
long long timeval_diff_usecs(const struct timeval *tv1,
const struct timeval *tv2);
static inline void
timeval_add_msecs(struct timeval *tv, unsigned int msecs)
{
tv->tv_sec += msecs / 1000;
tv->tv_usec += (msecs % 1000) * 1000;
if (tv->tv_usec >= 1000000) {
tv->tv_sec++;
tv->tv_usec -= 1000000;
}
}
static inline void
timeval_sub_msecs(struct timeval *tv, unsigned int msecs)
{
tv->tv_sec -= msecs / 1000;
tv->tv_usec -= (msecs % 1000) * 1000;
if (tv->tv_usec < 0) {
tv->tv_sec--;
tv->tv_usec += 1000000;
}
}
/* Wrapper to strftime() */
const char *t_strflocaltime(const char *fmt, time_t t) ATTR_STRFTIME(1);
#endif