bionic/libc/private/bionic_time_conversions.h

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/*
* Copyright (C) 2013 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
#ifndef _BIONIC_TIME_CONVERSIONS_H
#define _BIONIC_TIME_CONVERSIONS_H
#include <errno.h>
#include <time.h>
#include <sys/cdefs.h>
#include "private/bionic_constants.h"
__BEGIN_DECLS
__LIBC_HIDDEN__ bool timespec_from_timeval(timespec& ts, const timeval& tv);
__LIBC_HIDDEN__ void timespec_from_ms(timespec& ts, const int ms);
__LIBC_HIDDEN__ void timeval_from_timespec(timeval& tv, const timespec& ts);
__LIBC_HIDDEN__ void absolute_timespec_from_timespec(timespec& abs_ts, const timespec& ts,
clockid_t clock);
__END_DECLS
static inline int check_timespec(const timespec* ts, bool null_allowed) {
if (null_allowed && ts == nullptr) {
return 0;
}
// glibc just segfaults if you pass a null timespec.
// That seems a lot more likely to catch bad code than returning EINVAL.
if (ts->tv_nsec < 0 || ts->tv_nsec >= NS_PER_S) {
return EINVAL;
}
if (ts->tv_sec < 0) {
return ETIMEDOUT;
}
return 0;
}
#endif