@@ -16,22 +16,14 @@
|
||||
|
||||
package org.springframework.integration.test.util;
|
||||
|
||||
import java.io.File;
|
||||
import java.lang.management.ManagementFactory;
|
||||
|
||||
import javax.management.MBeanServer;
|
||||
|
||||
import com.sun.management.HotSpotDiagnosticMXBean;
|
||||
|
||||
/**
|
||||
* Use to take a heap dump programmatically. Useful to examine the heap when debugging
|
||||
* sporadic test failures.
|
||||
* <p>
|
||||
* Usage: {@code HeapDumper.dumpHeap("/tmp/foo.hprof");}
|
||||
* <p>
|
||||
* If the file exists already, it will be replaced.
|
||||
* <p>
|
||||
* Courtesy:
|
||||
* <p>Commented out because it uses access-restricted classes and some IDEs won't build
|
||||
* the project without relaxing the access restriction.
|
||||
* <p>Usage: {@code HeapDumper.dumpHeap("/tmp/foo.hprof");}
|
||||
* <p>If the file exists already, it will be replaced.
|
||||
* <p>Courtesy:
|
||||
* https://blogs.oracle.com/sundararajan/entry/programmatically_dumping_heap_from_java
|
||||
* <pre>
|
||||
* See https://docs.oracle.com/javase/8/docs/jre/api/management/extension/com/sun/management/HotSpotDiagnosticMXBean.html#dumpHeap-java.lang.String-boolean-
|
||||
@@ -42,64 +34,64 @@ import com.sun.management.HotSpotDiagnosticMXBean;
|
||||
*/
|
||||
public class HeapDumper {
|
||||
|
||||
// This is the name of the HotSpot Diagnostic MBean
|
||||
private static final String HOTSPOT_BEAN_NAME = "com.sun.management:type=HotSpotDiagnostic";
|
||||
|
||||
// field to store the hotspot diagnostic MBean
|
||||
private static volatile HotSpotDiagnosticMXBean hotspotMBean;
|
||||
|
||||
private HeapDumper() {
|
||||
super();
|
||||
}
|
||||
|
||||
public static void dumpHeap(String fileName) {
|
||||
dumpHeap(fileName, true);
|
||||
}
|
||||
|
||||
public static void dumpHeap(String fileName, boolean live) {
|
||||
File file = new File(fileName);
|
||||
if (file.exists()) {
|
||||
file.delete();
|
||||
}
|
||||
// initialize hotspot diagnostic MBean
|
||||
initHotspotMBean();
|
||||
try {
|
||||
hotspotMBean.dumpHeap(fileName, live);
|
||||
}
|
||||
catch (RuntimeException re) {
|
||||
throw re;
|
||||
}
|
||||
catch (Exception exp) {
|
||||
throw new RuntimeException(exp);
|
||||
}
|
||||
}
|
||||
|
||||
// initialize the hotspot diagnostic MBean field
|
||||
private static void initHotspotMBean() {
|
||||
if (hotspotMBean == null) {
|
||||
synchronized (Object.class) {
|
||||
if (hotspotMBean == null) {
|
||||
hotspotMBean = getHotspotMBean();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// get the hotspot diagnostic MBean from the
|
||||
// platform MBean server
|
||||
private static HotSpotDiagnosticMXBean getHotspotMBean() {
|
||||
try {
|
||||
MBeanServer server = ManagementFactory.getPlatformMBeanServer();
|
||||
HotSpotDiagnosticMXBean bean = ManagementFactory.newPlatformMXBeanProxy(server, HOTSPOT_BEAN_NAME,
|
||||
HotSpotDiagnosticMXBean.class);
|
||||
return bean;
|
||||
}
|
||||
catch (RuntimeException re) {
|
||||
throw re;
|
||||
}
|
||||
catch (Exception exp) {
|
||||
throw new RuntimeException(exp);
|
||||
}
|
||||
}
|
||||
// // This is the name of the HotSpot Diagnostic MBean
|
||||
// private static final String HOTSPOT_BEAN_NAME = "com.sun.management:type=HotSpotDiagnostic";
|
||||
//
|
||||
// // field to store the hotspot diagnostic MBean
|
||||
// private static volatile HotSpotDiagnosticMXBean hotspotMBean;
|
||||
//
|
||||
// private HeapDumper() {
|
||||
// super();
|
||||
// }
|
||||
//
|
||||
// public static void dumpHeap(String fileName) {
|
||||
// dumpHeap(fileName, true);
|
||||
// }
|
||||
//
|
||||
// public static void dumpHeap(String fileName, boolean live) {
|
||||
// File file = new File(fileName);
|
||||
// if (file.exists()) {
|
||||
// file.delete();
|
||||
// }
|
||||
// // initialize hotspot diagnostic MBean
|
||||
// initHotspotMBean();
|
||||
// try {
|
||||
// hotspotMBean.dumpHeap(fileName, live);
|
||||
// }
|
||||
// catch (RuntimeException re) {
|
||||
// throw re;
|
||||
// }
|
||||
// catch (Exception exp) {
|
||||
// throw new RuntimeException(exp);
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// // initialize the hotspot diagnostic MBean field
|
||||
// private static void initHotspotMBean() {
|
||||
// if (hotspotMBean == null) {
|
||||
// synchronized (Object.class) {
|
||||
// if (hotspotMBean == null) {
|
||||
// hotspotMBean = getHotspotMBean();
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// // get the hotspot diagnostic MBean from the
|
||||
// // platform MBean server
|
||||
// private static HotSpotDiagnosticMXBean getHotspotMBean() {
|
||||
// try {
|
||||
// MBeanServer server = ManagementFactory.getPlatformMBeanServer();
|
||||
// HotSpotDiagnosticMXBean bean = ManagementFactory.newPlatformMXBeanProxy(server, HOTSPOT_BEAN_NAME,
|
||||
// HotSpotDiagnosticMXBean.class);
|
||||
// return bean;
|
||||
// }
|
||||
// catch (RuntimeException re) {
|
||||
// throw re;
|
||||
// }
|
||||
// catch (Exception exp) {
|
||||
// throw new RuntimeException(exp);
|
||||
// }
|
||||
// }
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user