/*
* 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 ;
}
static void convert_timespec_clocks(timespec& new_time, clockid_t new_clockbase,
const timespec& old_time, clockid_t old_clockbase) {
// get reference clocks
timespec new_clock;
clock_gettime(new_clockbase, &new_clock);
timespec old_clock;
clock_gettime(old_clockbase, &old_clock);
// compute new time by moving old delta to the new clock.
new_time.tv_sec = old_time.tv_sec - old_clock.tv_sec + new_clock.tv_sec;
new_time.tv_nsec = old_time.tv_nsec - old_clock.tv_nsec + new_clock.tv_nsec;
// correct nsec to second wrap.
if (new_time.tv_nsec >= NS_PER_S) {
new_time.tv_nsec -= NS_PER_S;
new_time.tv_sec += 1 ;
} else if (new_time.tv_nsec < 0 ) {
new_time.tv_nsec += NS_PER_S;
new_time.tv_sec -= 1 ;
}
}
void monotonic_time_from_realtime_time(timespec& monotonic_time, const timespec& realtime_time) {
convert_timespec_clocks(monotonic_time, CLOCK_MONOTONIC, realtime_time, CLOCK_REALTIME);
}
void realtime_time_from_monotonic_time(timespec& realtime_time, const timespec& monotonic_time) {
convert_timespec_clocks(realtime_time, CLOCK_REALTIME, monotonic_time, CLOCK_MONOTONIC);
}
Messung V0.5 in Prozent C=87 H=92 G=89
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-28)
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