JVM

Diverse Details der JVM

ControlPanel bei Java-Plugin

Das ControlPannel ist ein java-programm, mit dem man details im Plugin definieren kann.

In der JRE-1.5.0 werden diese Properties in $HOME/.java/deployment/ festgelegt, u.a. Aufrufparameter der Virtual Machine

Threads der JVM

Beim laufen der JVM werden auch bei trivialen programmen ca. 20 Threads beobachtet (in linux mit ps aux | grep java).

Bei einem Segmentation fault der 1.5.0-beta kam heraus, wie diese heissen:

Java Threads: ( => current thread )
  0x085117c8 JavaThread "Thread-5" [_thread_in_native, id=4489]
  0x083fa818 JavaThread "AWT-EventQueue-2" [_thread_blocked, id=4488]
  0x08482ca8 JavaThread "thread applet-appletMeSniMo.class" [_thread_in_native,
id=4483]
  0x082b8718 JavaThread "AWT-EventQueue-0" [_thread_blocked, id=4480]
  0x082b7bc0 JavaThread "AWT-Shutdown" [_thread_blocked, id=4479]
=>0x082a3538 JavaThread "Thread-2" [_thread_in_native, id=4478]
  0x08286648 JavaThread "Thread-1" [_thread_blocked, id=4475]
  0x08276f88 JavaThread "traceMsgQueueThread" [_thread_blocked, id=4473]
  0x0824bcc0 JavaThread "AWT-XAWT" daemon [_thread_in_native, id=4472]
  0x08232bb8 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=4471]
  0x080c6720 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=4469]
  0x080c53a8 JavaThread "CompilerThread0" daemon [_thread_blocked, id=4468]
  0x080c4550 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=4467]
  0x080b95e0 JavaThread "Finalizer" daemon [_thread_blocked, id=4466]
  0x080b8850 JavaThread "Reference Handler" daemon [_thread_blocked, id=4465]
  0x0804fa30 JavaThread "main" [_thread_in_native, id=4462]
                                                                                
Other Threads:
  0x080b3ef0 VMThread [id=4464]
  0x080c7a08 WatcherThread [id=4470]

Informatik- und Netzwerkverein Ravensburg e.V Rudolf Weber