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| |
| heapViewer |
| |
| This agent library demonstrates how to get an easy view of the |
| heap in terms of total object count and space used. |
| It uses GetLoadedClasses(), SetTag(), and IterateThroughHeap() |
| to count up all the objects of all the current loaded classes. |
| The heap dump will happen at the event JVMTI_EVENT_VM_DEATH, or the |
| event JVMTI_EVENT_DATA_DUMP_REQUEST. |
| |
| It also demonstrates some more robust agent error handling using |
| GetErrorName(), |
| |
| Using the heap iterate functions, lots of statistics can be generated |
| without resorting to using Byte Code Instrumentation (BCI). |
| |
| You can use this agent library as follows: |
| |
| java -agentlib:heapViewer ... |
| |
| To get help on the available options try: |
| |
| java -agentlib:heapViewer=help |
| |
| See ${JAVA_HOME}/demo/jvmti/index.html for help running and building agents. |
| |
