Mercurial > hg > release > thermostat-2.0
view vm-shenandoah/agent/src/main/java/com/redhat/thermostat/vm/shenandoah/agent/internal/VmShenandoahDataExtractor.java @ 2617:f06bab050620
Add vm-shenandoah plugin
Provides a shenandoahvisualizer-based visualization of memory regions and GC
status for Shenandoah.
See http://icedtea.classpath.org/people/rkennke/shenandoahvisualizer
Reviewed-by: jkang
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2017-March/022332.html
author | Andrew Azores <aazores@redhat.com> |
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date | Mon, 06 Mar 2017 09:38:30 -0500 |
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/* * Copyright 2012-2017 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat 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 2, or (at your * option) any later version. * * Thermostat 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 Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.vm.shenandoah.agent.internal; import com.redhat.thermostat.backend.VmUpdate; import com.redhat.thermostat.backend.VmUpdateException; public class VmShenandoahDataExtractor { private final VmUpdate vmUpdate; public VmShenandoahDataExtractor(VmUpdate vmUpdate) { this.vmUpdate = vmUpdate; } public long getTimestamp() throws VmUpdateException { return vmUpdate.getPerformanceCounterLong("sun.gc.shenandoah.regions.timestamp"); } public long getMaxRegions() throws VmUpdateException { return vmUpdate.getPerformanceCounterLong("sun.gc.shenandoah.regions.max_regions"); } public long getRegionSize() throws VmUpdateException { return vmUpdate.getPerformanceCounterLong("sun.gc.shenandoah.regions.region_size"); } public long getStatus() throws VmUpdateException { return vmUpdate.getPerformanceCounterLong("sun.gc.shenandoah.regions.status"); } public long[] getRegionData() throws VmUpdateException { long[] data = new long[(int) getMaxRegions()]; for (int i = 0; i < data.length; i++) { data[i] = vmUpdate.getPerformanceCounterLong("sun.gc.shenandoah.regions.region." + i + ".data"); } return data; } }