/*
* Copyright 2014 Higher Frequency Trading
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.openhft.collections.fromdocs.pingpong_latency;
import net.openhft.affinity.AffinitySupport;
import net.openhft.collections.SharedHashMap;
import net.openhft.collections.SharedHashMapBuilder;
import net.openhft.collections.fromdocs.BondVOInterface;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import static net.openhft.lang.model.DataValueClasses.newDirectReference;
public class PingPongAddLeft {
public static void main(String... ignored) throws IOException {
SharedHashMap<String, BondVOInterface> shm = PingPongCASLeft.acquireSHM();
playPingPong(shm, +1, true, "PingPongAddLEFT");
}
static void playPingPong(SharedHashMap<String, BondVOInterface> shm, double add, boolean setFirst, final String desc) {
BondVOInterface bond1 = newDirectReference(BondVOInterface.class);
BondVOInterface bond2 = newDirectReference(BondVOInterface.class);
BondVOInterface bond3 = newDirectReference(BondVOInterface.class);
BondVOInterface bond4 = newDirectReference(BondVOInterface.class);
shm.acquireUsing("369604101", bond1);
shm.acquireUsing("369604102", bond2);
shm.acquireUsing("369604103", bond3);
shm.acquireUsing("369604104", bond4);
System.out.printf("\n\n" + desc + ": Timing off-heap operations on /dev/shm/RDR_DIM_Mock\n");
if (setFirst) {
bond1.setCoupon(add);
bond2.setCoupon(add);
bond3.setCoupon(add);
bond4.setCoupon(add);
}
int timeToCallNanoTime = 30;
int runs = 1000000;
long[] timings = new long[runs];
for (int j = 0; j < 100; j++) {
for (int i = 0; i < runs; i++) {
long _start = System.nanoTime();
bond1.addAtomicCoupon(add);
bond2.addAtomicCoupon(add);
bond3.addAtomicCoupon(add);
bond4.addAtomicCoupon(add);
timings[i] = (System.nanoTime() - _start - timeToCallNanoTime) / 4;
}
Arrays.sort(timings);
System.out.printf("#%d: atomic add coupon 50/90/99%%tile was %,d / %,d / %,d%n",
j, timings[runs / 2], timings[runs * 9 / 10], timings[runs * 99 / 100]);
}
}
}