04303f5a8a
Bug: https://code.google.com/p/android/issues/detail?id=76088 Change-Id: I4a0561b23e90312384d40a1c804ca64ee98f4066
69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "private/bionic_time_conversions.h"
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#include "private/bionic_constants.h"
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bool timespec_from_timeval(timespec& ts, const timeval& tv) {
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// Whole seconds can just be copied.
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ts.tv_sec = tv.tv_sec;
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// But we might overflow when converting microseconds to nanoseconds.
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if (tv.tv_usec >= 1000000 || tv.tv_usec < 0) {
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return false;
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}
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ts.tv_nsec = tv.tv_usec * 1000;
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return true;
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}
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void timespec_from_ms(timespec& ts, const int ms) {
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ts.tv_sec = ms / 1000;
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ts.tv_nsec = (ms % 1000) * 1000000;
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}
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void timeval_from_timespec(timeval& tv, const timespec& ts) {
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tv.tv_sec = ts.tv_sec;
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tv.tv_usec = ts.tv_nsec / 1000;
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}
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// Initializes 'ts' with the difference between 'abs_ts' and the current time
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// according to 'clock'. Returns false if abstime already expired, true otherwise.
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bool timespec_from_absolute_timespec(timespec& ts, const timespec& abs_ts, clockid_t clock) {
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clock_gettime(clock, &ts);
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ts.tv_sec = abs_ts.tv_sec - ts.tv_sec;
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ts.tv_nsec = abs_ts.tv_nsec - ts.tv_nsec;
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if (ts.tv_nsec < 0) {
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ts.tv_sec--;
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ts.tv_nsec += NS_PER_S;
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}
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if (ts.tv_nsec < 0 || ts.tv_sec < 0) {
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return false;
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}
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return true;
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}
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