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59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
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/* Copyright 2003 Roger Dingledine */
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/* See LICENSE for licensing information */
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/* $Id$ */
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#include <stdlib.h>
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#include "util.h"
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#include "log.h"
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void
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my_gettimeofday(struct timeval *timeval)
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{
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if (gettimeofday(timeval, NULL)) {
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log(LOG_ERR, "my_gettimeofday: gettimeofday failed.");
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/* If gettimeofday dies, we have either given a bad timezone (we didn't),
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or segfaulted.*/
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exit(1);
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}
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return;
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}
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long
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tv_udiff(struct timeval *start, struct timeval *end)
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{
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long secdiff = end->tv_sec - start->tv_sec;
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if (secdiff+1 > LONG_MAX/1000000) {
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log(LOG_NOTICE, "tv_udiff(): comparing times too far apart.");
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return LONG_MAX;
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}
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if (end->tv_usec < start->tv_usec) {
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end->tv_sec--;
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end->tv_usec += 1000000L;
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}
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return secdiff*1000000L + (end->tv_usec - start->tv_usec);
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}
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int tv_cmp(struct timeval *a, struct timeval *b) {
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if (a->tv_sec > b->tv_sec)
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return 1;
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if (a->tv_sec < b->tv_sec)
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return -1;
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if (a->tv_usec > b->tv_usec)
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return 1;
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if (a->tv_usec < b->tv_usec)
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return -1;
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return 0;
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}
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void tv_add(struct timeval *a, struct timeval *b) {
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a->tv_usec += b->tv_usec;
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a->tv_sec += b->tv_sec + (a->tv_usec / 1000000);
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a->tv_usec %= 1000000;
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}
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void tv_addms(struct timeval *a, long ms) {
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a->tv_usec += (ms * 1000) % 1000000;
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a->tv_sec += ((ms * 1000) / 1000000) + (a->tv_usec / 1000000);
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a->tv_usec %= 1000000;
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}
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