When I am trying to use JStack to get the thread dump of my frozen application, one of the threads gives me this result:
Thread 27560: (state = IN_NATIVE) - org.eclipse.swt.internal.gtk.OS._gtk_adjustment_changed(int) @bci=0 (Compiled frame; information may be imprecise) Error occurred during stack walking: java.lang.NullPointerException at sun.jvm.hotspot.runtime.Frame.addressOfStackSlot(Frame.java:224) at sun.jvm.hotspot.runtime.x86.X86Frame.senderForCompiledFrame(X86Frame.java:342) at sun.jvm.hotspot.runtime.x86.X86Frame.sender(X86Frame.java:283) at sun.jvm.hotspot.runtime.Frame.sender(Frame.java:194) at sun.jvm.hotspot.runtime.Frame.realSender(Frame.java:199) at sun.jvm.hotspot.runtime.VFrame.sender(VFrame.java:119) at sun.jvm.hotspot.runtime.CompiledVFrame.sender(CompiledVFrame.java:178) at sun.jvm.hotspot.runtime.VFrame.javaSender(VFrame.java:146) at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:76) at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:45) at sun.jvm.hotspot.tools.JStack.run(JStack.java:60) at sun.jvm.hotspot.tools.Tool.start(Tool.java:221) at sun.jvm.hotspot.tools.JStack.main(JStack.java:86) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at sun.tools.jstack.JStack.runJStackTool(JStack.java:118) at sun.tools.jstack.JStack.main(JStack.java:84) Of course, it is the one I am most interested in :(
Ctrl+Break doesn't work either. Are there other ways to get a thread dump? I am using Linux and Sun VM 1.6.0_20.
CTRL-\(CTRL-Breakis Windows).