68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
/*
|
|
* \brief A duration type for both highly precise and long durations
|
|
* \author Martin Stein
|
|
* \date 2017-03-21
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2016-2017 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
/* Genode includes */
|
|
#include <os/duration.h>
|
|
|
|
using namespace Genode;
|
|
|
|
|
|
void Duration::_raise_hours(unsigned long hours)
|
|
{
|
|
unsigned long const old_hours = _hours;
|
|
_hours += hours;
|
|
if (_hours < old_hours) {
|
|
throw Overflow(); }
|
|
}
|
|
|
|
|
|
void Duration::operator += (Microseconds us)
|
|
{
|
|
_microseconds += us.value;
|
|
if (_microseconds > US_PER_HOUR) {
|
|
_microseconds -= US_PER_HOUR;
|
|
_raise_hours(1);
|
|
}
|
|
}
|
|
|
|
|
|
void Duration::operator += (Milliseconds ms)
|
|
{
|
|
/* filter out hours if any */
|
|
if (ms.value >= MS_PER_HOUR) {
|
|
unsigned long const hours = ms.value / MS_PER_HOUR;
|
|
_raise_hours(hours);
|
|
ms.value -= hours * MS_PER_HOUR;
|
|
}
|
|
/* add the rest as microseconds value */
|
|
*this += Microseconds(ms.value * US_PER_MS);
|
|
}
|
|
|
|
|
|
bool Duration::operator < (Duration &other) const
|
|
{
|
|
if (_hours != other._hours) {
|
|
return _hours < other._hours; }
|
|
|
|
if (_microseconds != other._microseconds) {
|
|
return _microseconds < other._microseconds; }
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
Microseconds Duration::trunc_to_plain_us() const
|
|
{
|
|
return Microseconds(_microseconds + (_hours ? _hours * US_PER_HOUR : 0));
|
|
}
|