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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.
*/
#include "private/bionic_time_conversions.h"
#include "private/bionic_constants.h"
bool timespec_from_timeval(timespec& ts, const timeval& tv) {
// Whole seconds can just be copied.
ts.tv_sec = tv.tv_sec;
// But we might overflow when converting microseconds to nanoseconds.
if (tv.tv_usec >= 1000000 || tv.tv_usec < 0) {
return false;
}
ts.tv_nsec = tv.tv_usec * 1000;
return true;
}
void timespec_from_ms(timespec& ts, const int ms) {
ts.tv_sec = ms / 1000;
ts.tv_nsec = (ms % 1000) * 1000000;
}
void timeval_from_timespec(timeval& tv, const timespec& ts) {
tv.tv_sec = ts.tv_sec;
tv.tv_usec = ts.tv_nsec / 1000;
}
void monotonic_time_from_realtime_time(timespec& monotonic_time, const timespec& realtime_time) {
monotonic_time = realtime_time;
timespec cur_monotonic_time;
clock_gettime(CLOCK_MONOTONIC, &cur_monotonic_time);
timespec cur_realtime_time;
clock_gettime(CLOCK_REALTIME, &cur_realtime_time);
monotonic_time.tv_nsec -= cur_realtime_time.tv_nsec;
monotonic_time.tv_nsec += cur_monotonic_time.tv_nsec;
if (monotonic_time.tv_nsec >= NS_PER_S) {
monotonic_time.tv_nsec -= NS_PER_S;
monotonic_time.tv_sec += 1;
} else if (monotonic_time.tv_nsec < 0) {
monotonic_time.tv_nsec += NS_PER_S;
monotonic_time.tv_sec -= 1;
}
monotonic_time.tv_sec -= cur_realtime_time.tv_sec;
monotonic_time.tv_sec += cur_monotonic_time.tv_sec;
}
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