/**
* Copyright 2014 Alexey Ragozin
*
* 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 org.gridkit.jvmtool;
import org.gridkit.lab.jvm.perfdata.JStatData;
import org.gridkit.lab.jvm.perfdata.JStatData.TickCounter;
public class PerfCounterGcCpuUsageMonitor implements GcCpuUsageMonitor {
TickCounter gc0;
TickCounter gc1;
public PerfCounterGcCpuUsageMonitor(long pid) {
JStatData jd = JStatData.connect(pid);
gc0 = (TickCounter) jd.getAllCounters().get("sun.gc.collector.0.time");
gc1 = (TickCounter) jd.getAllCounters().get("sun.gc.collector.1.time");
}
@Override
public long getYoungGcCpu() {
return gc0 == null ? 0 : gc0.getNanos();
}
@Override
public long getOldGcCpu() {
return gc1 == null ? 0 : gc1.getNanos();
}
}