/**
* Register with the JVM to get threshold events.
*
* Package private for testing.
*/
void startJVMThresholdListener() {
final MemoryPoolMXBean memoryPoolMXBean = getTenuredMemoryPoolMXBean();
// Set collection threshold to a low value, so that we can get
// notifications after every GC run. After each such collection
// threshold notification we set the usage thresholds to an
// appropriate value.
if (!testDisableMemoryUpdates) {
memoryPoolMXBean.setCollectionUsageThreshold(1);
}
final long usageThreshold = memoryPoolMXBean.getUsageThreshold();
this.cache.getLoggerI18n().info(
LocalizedStrings.HeapMemoryMonitor_OVERRIDDING_MEMORYPOOLMXBEAN_HEAP_0_NAME_1,
new Object[] {Long.valueOf(usageThreshold), memoryPoolMXBean.getName()});
MemoryMXBean mbean = ManagementFactory.getMemoryMXBean();
NotificationEmitter emitter = (NotificationEmitter) mbean;
emitter.addNotificationListener(this, null, null);
}
HeapMemoryMonitor.java 文件源码
java
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