OpenSeSim/src/opensesim/world/scheduler/Clock.java

109 lines
3.4 KiB
Java

/*
* Copyright (c) 2018, 7u83
* 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 HOLDER 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.
*/
package opensesim.world.scheduler;
/**
*
* @author 7u83 <7u83@mail.ru>
*/
public class Clock {
private double current_millis = 0.0;
private long last_nanos = System.nanoTime();
private double current_nanos = 0;
private double acceleration = 1.0;
public double getAcceleration() {
return acceleration;
}
public void setAcceleration(double acceleration) {
this.acceleration = acceleration;
}
private boolean pause = false;
public boolean isPause() {
return pause;
}
public void setPause(boolean pause) {
this.pause = pause;
}
/**
*
* @return
*/
private long currentTimeMillis1() {
long cur = System.nanoTime();
long diff = cur - last_nanos;
last_nanos = cur;
if (pause) {
return (long) this.current_millis;
}
// this.cur_nano += (((double)diff_nano)/1000000.0)*this.acceleration;
// return (long)(cur_nano/1000000.0);
this.current_nanos += (double) diff * (double) this.acceleration;
// this.current_time_millis += ((double) diff) * this.acceleration;
this.current_millis = this.current_nanos / 1000000.0;
return (long) this.current_millis;
}
public long currentTimeMillis() {
return (long) this.current_millis;
}
synchronized long getDelay(long t) {
long ct = currentTimeMillis1();
// ct = t;
if (t > ct) {
//if ((long) diff > 0) {
// System.out.printf("Leave Event Queue in run events %d\n", Thread.currentThread().getId());
// System.out.printf("Sleeping somewat %d\n", (long) (0.5 + (t - this.currentTimeMillis()) / this.acceleration));
// return (long) diff;
return (long) (((double) t - this.current_millis) / this.acceleration);
}
/* if (t < ct) {
// System.out.printf("Time is overslipping: %d\n",ct-t);
this.current_millis = t;
this.current_nanos = this.current_millis * 1000000.0;
}*/
return 0;
}
}