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/*
* SonarQube
* Copyright (C) 2009-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.process.systeminfo;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryMXBean;
import java.lang.management.MemoryUsage;
import java.lang.management.OperatingSystemMXBean;
import java.lang.management.ThreadMXBean;
import java.util.Locale;
import org.sonar.process.systeminfo.protobuf.ProtobufSystemInfo;
import static java.lang.String.format;
import static org.sonar.process.systeminfo.SystemInfoUtils.setAttribute;
/**
* Dumps state of JVM (memory, threads)
*/
public class JvmStateSection implements SystemInfoSection {
private static final long MEGABYTE = 1024L * 1024L;
private final String name;
public JvmStateSection(String name) {
this.name = name;
}
@Override
public ProtobufSystemInfo.Section toProtobuf() {
return toProtobuf(ManagementFactory.getMemoryMXBean());
}
// Visible for testing
ProtobufSystemInfo.Section toProtobuf(MemoryMXBean memoryBean) {
ProtobufSystemInfo.Section.Builder protobuf = ProtobufSystemInfo.Section.newBuilder();
protobuf.setName(name);
addAttributeInMb(protobuf,"Max Memory (MB)", Runtime.getRuntime().maxMemory());
addAttributeInMb(protobuf, "Free Memory (MB)", Runtime.getRuntime().freeMemory());
MemoryUsage heap = memoryBean.getHeapMemoryUsage();
addAttributeInMb(protobuf, "Heap Committed (MB)", heap.getCommitted());
addAttributeInMb(protobuf, "Heap Init (MB)", heap.getInit());
addAttributeInMb(protobuf, "Heap Max (MB)", heap.getMax());
addAttributeInMb(protobuf, "Heap Used (MB)", heap.getUsed());
MemoryUsage nonHeap = memoryBean.getNonHeapMemoryUsage();
addAttributeInMb(protobuf, "Non Heap Committed (MB)", nonHeap.getCommitted());
addAttributeInMb(protobuf, "Non Heap Init (MB)", nonHeap.getInit());
addAttributeInMb(protobuf, "Non Heap Max (MB)", nonHeap.getMax());
addAttributeInMb(protobuf, "Non Heap Used (MB)", nonHeap.getUsed());
OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
setAttribute(protobuf,"System Load Average", format(Locale.ENGLISH, "%.1f%% (last minute)", os.getSystemLoadAverage() * 100.0));
ThreadMXBean thread = ManagementFactory.getThreadMXBean();
setAttribute(protobuf, "Threads", thread.getThreadCount());
return protobuf.build();
}
private static void addAttributeInMb(ProtobufSystemInfo.Section.Builder protobuf, String key, long valueInBytes) {
if (valueInBytes >= 0L) {
setAttribute(protobuf, key, valueInBytes / MEGABYTE);
}
}
}
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