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Bug 236480

Summary:	NullPointerException at org.netbeans.modules.profiler.ProfilerControlPanel2$SnapshotsPanel.isOpen
Product:	profiler	Reporter:	ehsavoie <ehsavoie>
Component:	Base	Assignee:	Jiri Sedlacek <jis>
Status:	RESOLVED FIXED
Severity:	normal	CC:	ehsavoie
Priority:	P3
Version:	7.4
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	200757
Attachments:	stacktrace stacktrace

Description ehsavoie 2013-09-27 14:43:01 UTC

Build: NetBeans IDE Dev (Build 201309250002)
VM: Java HotSpot(TM) 64-Bit Server VM, 24.0-b56, Java(TM) SE Runtime Environment, 1.7.0_40-b43
OS: Linux

User Comments:
GUEST: I deleted a heap dump. This doesn't seem to work and I again deleted the same heap dump. Later the NPE arised.

ehsavoie: Deleting a thread dump




Stacktrace: 
java.lang.NullPointerException
   at org.netbeans.modules.profiler.ProfilerControlPanel2$SnapshotsPanel.isOpen(ProfilerControlPanel2.java:1229)
   at org.netbeans.modules.profiler.ProfilerControlPanel2$SnapshotsPanel.access$1000(ProfilerControlPanel2.java:941)
   at org.netbeans.modules.profiler.ProfilerControlPanel2$SnapshotsPanel$3.getListCellRendererComponent(ProfilerControlPanel2.java:1106)
   at javax.swing.plaf.basic.BasicListUI.paintCell(BasicListUI.java:208)
   at javax.swing.plaf.basic.BasicListUI.paintImpl(BasicListUI.java:317)
   at javax.swing.plaf.basic.BasicListUI.paint(BasicListUI.java:240)

Comment 1 ehsavoie 2013-09-27 14:43:03 UTC

Created attachment 140565 [details]
stacktrace

Comment 2 ehsavoie 2013-11-14 16:00:35 UTC

Created attachment 142189 [details]
stacktrace

Deleting heap dumps

Comment 3 Jiri Sedlacek 2013-11-14 16:16:10 UTC

Deleting heap dumps (open or previously closed) is kind of tricky as some data are still being memory-mapped.

Implemented a fix to not throw NPEs in this case: http://hg.netbeans.org/profiler-main/rev/5e917f2464d2.