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Split out time-related evutil functions into a new evutil_time.c
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| /* | ||
| * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * 1. Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * 2. Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in the | ||
| * documentation and/or other materials provided with the distribution. | ||
| * 3. The name of the author may not be used to endorse or promote products | ||
| * derived from this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | ||
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | ||
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | ||
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
|
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||
| #include "event2/event-config.h" | ||
| #include "evconfig-private.h" | ||
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||
| #ifdef _WIN32 | ||
| #include <winsock2.h> | ||
| #define WIN32_LEAN_AND_MEAN | ||
| #include <windows.h> | ||
| #undef WIN32_LEAN_AND_MEAN | ||
| #endif | ||
|
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||
| #include <sys/types.h> | ||
| #ifdef EVENT__HAVE_STDLIB_H | ||
| #include <stdlib.h> | ||
| #endif | ||
| #include <errno.h> | ||
| #include <limits.h> | ||
| #ifndef EVENT__HAVE_GETTIMEOFDAY | ||
| #include <sys/timeb.h> | ||
| #endif | ||
| #if !defined(EVENT__HAVE_NANOSLEEP) && !defined(EVENT_HAVE_USLEEP) && \ | ||
| !defined(_WIN32) | ||
| #include <sys/select.h> | ||
| #endif | ||
| #include <time.h> | ||
| #include <sys/stat.h> | ||
|
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| #include "event2/util.h" | ||
| #include "util-internal.h" | ||
| #include "log-internal.h" | ||
|
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| #ifndef EVENT__HAVE_GETTIMEOFDAY | ||
| /* No gettimeofday; this must be windows. */ | ||
| int | ||
| evutil_gettimeofday(struct timeval *tv, struct timezone *tz) | ||
| { | ||
| #ifdef _MSC_VER | ||
| #define U64_LITERAL(n) n##ui64 | ||
| #else | ||
| #define U64_LITERAL(n) n##llu | ||
| #endif | ||
|
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||
| /* Conversion logic taken from Tor, which in turn took it | ||
| * from Perl. GetSystemTimeAsFileTime returns its value as | ||
| * an unaligned (!) 64-bit value containing the number of | ||
| * 100-nanosecond intervals since 1 January 1601 UTC. */ | ||
| #define EPOCH_BIAS U64_LITERAL(116444736000000000) | ||
| #define UNITS_PER_SEC U64_LITERAL(10000000) | ||
| #define USEC_PER_SEC U64_LITERAL(1000000) | ||
| #define UNITS_PER_USEC U64_LITERAL(10) | ||
| union { | ||
| FILETIME ft_ft; | ||
| ev_uint64_t ft_64; | ||
| } ft; | ||
|
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||
| if (tv == NULL) | ||
| return -1; | ||
|
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| GetSystemTimeAsFileTime(&ft.ft_ft); | ||
|
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| if (EVUTIL_UNLIKELY(ft.ft_64 < EPOCH_BIAS)) { | ||
| /* Time before the unix epoch. */ | ||
| return -1; | ||
| } | ||
| ft.ft_64 -= EPOCH_BIAS; | ||
| tv->tv_sec = (long) (ft.ft_64 / UNITS_PER_SEC); | ||
| tv->tv_usec = (long) ((ft.ft_64 / UNITS_PER_USEC) % USEC_PER_SEC); | ||
| return 0; | ||
| } | ||
| #endif | ||
|
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||
| #define MAX_SECONDS_IN_MSEC_LONG \ | ||
| (((LONG_MAX) - 999) / 1000) | ||
|
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||
| long | ||
| evutil_tv_to_msec_(const struct timeval *tv) | ||
| { | ||
| if (tv->tv_usec > 1000000 || tv->tv_sec > MAX_SECONDS_IN_MSEC_LONG) | ||
| return -1; | ||
|
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||
| return (tv->tv_sec * 1000) + ((tv->tv_usec + 999) / 1000); | ||
| } | ||
|
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||
| void | ||
| evutil_usleep_(const struct timeval *tv) | ||
| { | ||
| if (!tv) | ||
| return; | ||
| #if defined(_WIN32) | ||
| { | ||
| long msec = evutil_tv_to_msec_(tv); | ||
| Sleep((DWORD)msec); | ||
| } | ||
| #elif defined(EVENT__HAVE_NANOSLEEP) | ||
| { | ||
| struct timespec ts; | ||
| ts.tv_sec = tv->tv_sec; | ||
| ts.tv_nsec = tv->tv_usec*1000; | ||
| nanosleep(&ts, NULL); | ||
| } | ||
| #elif defined(EVENT__HAVE_USLEEP) | ||
| /* Some systems don't like to usleep more than 999999 usec */ | ||
| sleep(tv->tv_sec); | ||
| usleep(tv->tv_usec); | ||
| #else | ||
| select(0, NULL, NULL, NULL, tv); | ||
| #endif | ||
| } | ||
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