Mercurial > dovecot > core-2.2
view src/lib/time-util.c @ 23007:36e01285b5b8
lib: buffer - Improve header comment for buffer_insert() and buffer_delete().
author | Stephan Bosch <stephan.bosch@dovecot.fi> |
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date | Mon, 18 Mar 2019 00:52:37 +0100 |
parents | 33a2b955ea19 |
children |
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/* Copyright (c) 2008-2018 Dovecot authors, see the included COPYING file */ #include "lib.h" #include "time-util.h" #include <time.h> #define STRFTIME_MAX_BUFSIZE (1024*64) int timeval_cmp(const struct timeval *tv1, const struct timeval *tv2) { if (tv1->tv_sec < tv2->tv_sec) return -1; if (tv1->tv_sec > tv2->tv_sec) return 1; if (tv1->tv_usec < tv2->tv_usec) return -1; if (tv1->tv_usec > tv2->tv_usec) return 1; return 0; } int timeval_cmp_margin(const struct timeval *tv1, const struct timeval *tv2, unsigned int usec_margin) { unsigned long long usecs_diff; int sec_margin, ret; if (tv1->tv_sec < tv2->tv_sec) { sec_margin = ((int)usec_margin / 1000000) + 1; if ((tv2->tv_sec - tv1->tv_sec) > sec_margin) return -1; usecs_diff = (tv2->tv_sec - tv1->tv_sec) * 1000000ULL + (tv2->tv_usec - tv1->tv_usec); ret = -1; } else if (tv1->tv_sec > tv2->tv_sec) { sec_margin = ((int)usec_margin / 1000000) + 1; if ((tv1->tv_sec - tv2->tv_sec) > sec_margin) return 1; usecs_diff = (tv1->tv_sec - tv2->tv_sec) * 1000000ULL + (tv1->tv_usec - tv2->tv_usec); ret = 1; } else if (tv1->tv_usec < tv2->tv_usec) { usecs_diff = tv2->tv_usec - tv1->tv_usec; ret = -1; } else { usecs_diff = tv1->tv_usec - tv2->tv_usec; ret = 1; } return usecs_diff > usec_margin ? ret : 0; } int timeval_diff_msecs(const struct timeval *tv1, const struct timeval *tv2) { return timeval_diff_usecs(tv1, tv2) / 1000; } long long timeval_diff_usecs(const struct timeval *tv1, const struct timeval *tv2) { time_t secs; int usecs; secs = tv1->tv_sec - tv2->tv_sec; usecs = tv1->tv_usec - tv2->tv_usec; if (usecs < 0) { secs--; usecs += 1000000; } return ((long long)secs * 1000000LL) + usecs; } time_t time_to_local_day_start(time_t t) { const struct tm *day_tm; struct tm tm; time_t new_start_time; day_tm = localtime(&t); i_zero(&tm); tm.tm_year = day_tm->tm_year; tm.tm_mon = day_tm->tm_mon; tm.tm_mday = day_tm->tm_mday; tm.tm_isdst = -1; new_start_time = mktime(&tm); i_assert(new_start_time != (time_t)-1); return new_start_time; } static const char *strftime_real(const char *fmt, const struct tm *tm) { size_t bufsize = strlen(fmt) + 32; char *buf = t_buffer_get(bufsize); size_t ret; while ((ret = strftime(buf, bufsize, fmt, tm)) == 0) { bufsize *= 2; i_assert(bufsize <= STRFTIME_MAX_BUFSIZE); buf = t_buffer_get(bufsize); } t_buffer_alloc(ret + 1); return buf; } const char *t_strftime(const char *fmt, const struct tm *tm) { return strftime_real(fmt, tm); } const char *t_strflocaltime(const char *fmt, time_t t) { return strftime_real(fmt, localtime(&t)); } const char *t_strfgmtime(const char *fmt, time_t t) { return strftime_real(fmt, gmtime(&t)); }