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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/********************************************
DISCLAIMER:
This is a wrapper code to mimic the relevant std:: class
Please use it ONLY when porting an existing code e.g. from the original sources
For all new development please use classes from Common::
*********************************************/
#ifndef COMMON_STD_CHRONO_H
#define COMMON_STD_CHRONO_H
#include "common/system.h"
namespace Std {
namespace chrono {
class duration {
private:
uint32 _value;
public:
duration() : _value(0) {
}
duration(uint32 value) : _value(value) {
}
size_t count() const {
// durations for ScummVM are hardcoded to be in milliseconds
return 1000;
}
operator uint32() const {
return _value;
}
inline bool operator>=(const duration &rhs) const {
return _value >= rhs._value;
}
};
class milliseconds : public duration {
public:
milliseconds() : duration(0) {}
milliseconds(uint32 val) : duration(val) {}
static milliseconds zero() {
return milliseconds();
}
};
class microseconds : public duration {
public:
microseconds() : duration(0) {}
microseconds(long val) : duration(val / 1000) {}
};
struct system_clock {
};
struct steady_clock { // wraps QueryPerformanceCounter
using rep = uint32;
using period = milliseconds;
using duration = milliseconds;
using time_point = uint32;
static constexpr bool is_steady = true;
static time_point now() { // get current time
return g_system->getMillis();
}
};
using high_resolution_clock = steady_clock;
template<class T>
duration duration_cast(T param);
template<class T>
duration duration_cast(T param) {
return duration(param);
}
} // namespace chrono
} // namespace Std
#endif
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