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I am working on a C/C++ project using the 7.4 RC. The project is mixed language, containing lua and C code. I did not install the netbeans lua plugin, so I expect netbeans to open lua files as plain text. This works well normally. Occasionally it will not open lua files, but instead freeze. The UI opens a new tab, it has the source and history button, but the area that should display source code is just blank. I connected VisualVM to the frozen process and saw that the memory usage is constantly growing. The Monitor panel shows a nice Sawtooth function for the heap usage. CPU usage is around 10% with spikes occasionally. I attached a heap dump to the bug report. VisualVM reported a NullPointerException while the heap dump was generated, but I hope it helps nevertheless. I installed the netbeans 7.4 RC in the JavaSE version and added the C/C++ plugin later. If there is a lua plugin for netbeans, it is not installed (as far as I know there is non). I can not explain how to reproduce this bug, because I can not reproduce it. It did happen more than once. My platform: Linux Fedora 17, kernel 3.9.10-100.fc17.x86_64 java version "1.7.0_25" OpenJDK Runtime Environment (fedora-2.3.12.1.fc17-x86_64) OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)
Created attachment 140343 [details] thread dump from the frozen process The heap dump is too large to upload it, so here is a thread dump. The heap dump is at https://www.dropbox.com/s/pw50dw2vcmkanyx/heapdump-1379798690133.hprof
there seems to be a deadlock in debugger between "org.openide.text Editor Initialization" and "org.openide.text Document Processing" reassigning to debugger.
Just for completeness: I saw the same defect with the Java Editor. So the information that it happened in a C/C++ project/ with lua/plain test files is obsolete. Actually a lot of information is obsolete. "The IDE freezes when I try to open a new source file" is all that is left.
*** Bug 236153 has been marked as a duplicate of this bug. ***
This is hopefully already fixed in post-7.4 builds by issue #236095 *** This bug has been marked as a duplicate of bug 236095 ***
Don't understand why target milestone is 8.0 for such a core problem (same for referenced bug 236095. If it should already be fixed with an up-to-date 7.4 then it is not - I am still experiencing the issue.
Created attachment 141670 [details] VisualVM - Threaddump after trying to open a file Opening the file first creates an empty file tab then I switched tabs and then it froze.
Created attachment 141671 [details] Screenshot of Editor tab status after freeze
Thanks to all who worked on this - With the updates I applied yesterday the problem seems to be gone - Thank you! This was a show-stopper for using NetBeans 7.4 (at least for me). AngularJS Editor [1.4.1 -> 1.4.2] Ant Text API [6.58.1 -> 6.58.2] Bugzilla Mylyn Support Utilities [1.16.1 -> 1.16.2] CSS Preprocessors CSS Editor [1.57.1 -> 1.57.2] CSS Library [1.65.1 -> 1.67.2] Cordova Support Android Platform [1.20.1 -> 1.20.2] Java Profiler (JFluid) [1.44.1 -> 1.44.2] Java Profiler (JFluid-UI) [1.33.1 -> 1.33.2] iOS Platform [1.20.1 -> 1.20.2] Database Database Metadata Model [1.4.1 -> 1.4.2] GUI Builder Form Editor [1.50.1.4 -> 1.50.2.4] Git [1.11.1.1 -> 1.11.2.1] Hibernate Editor [1.75.1.5.22.43 -> 1.75.2.5.22.43] Hudson UI Common Test Runner API [1.37.1 -> 1.37.2] IDE Platform General Online Help [1.42.1 -> 1.42.2] JavaScript2 ExtJS [1.1.1 -> 1.1.2] Native Execution [1.30.4.1 -> 1.30.5.1] Native Terminal [1.16.1.1 -> 1.16.2.1] Output Window [1.34.1 -> 1.34.3] Refactoring API [1.37.1.1 -> 1.37.3.1] Terminal [1.16.1 -> 1.16.2] Terminal Emulator [1.27.1 -> 1.29.1] JSF Expression Language [1.39.1 -> 1.39.2] JSF Editor for XHTML [1.41.1 -> 1.41.2] Java JUnit Tests [2.60.1 -> 2.60.2] Java Refactoring [1.48.1.1 -> 1.48.2.1] Java Debugger JPDA Debugger [1.56.1 -> 1.56.2] Java EE Base JPDA Debugger Projects Integration [1.27.1 -> 1.27.2] NEON File Editor Support [1.13.1 -> 1.13.2] Java Persistence EclipseLink (JPA 2.1) [1.25.1 -> 1.27] EclipseLink-ModelGen (JPA 2.1) [1.25.1 -> 1.27] Java Persistence API Support [1.42.1.1 -> 1.44.0.1] Java Profiler Java Profiler (HeapWalker) [1.95.1 -> 1.95.2] Java Profiler (OQL) [2.9.1 -> 2.9.2] Knockout HTML Editor JavaScript2 Editor [0.29.1 -> 0.29.3] Lexer [1.53.1.1 -> 1.55.2.1] Local History Versioning Core [1.17.2.1.42 -> 1.17.3.1.42] Maven Maven Java EE [1.49.1 -> 1.49.2] Maven Projects [2.86.1 -> 2.86.2] Maven Repository Indexing [2.25.1 -> 2.25.2] Mercurial [1.34.1.42.1 -> 1.34.2.42.1] RCP Platform Auto Update Services [1.42.1 -> 1.42.2] Auto Update UI [1.38.1 -> 1.38.2] Core Network Settings [1.1.1 -> 1.1.2] Keymap Options [1.28.1 -> 1.28.2] Master Filesystem [2.44.1 -> 2.44.3] Spring Beans Java Source [0.129.1.26.2.24.8 -> 0.129.2.26.2.24.8] Subversion Project API [1.54.1 -> 1.54.2] Versioning [1.40.1.1 -> 1.40.2.1] Versioning Support Utilities [1.50.1.42.1 -> 1.50.2.42.1] TestNG Maven Embedder [2.42.1 -> 2.42.2] Maven NetBeans Module Projects [1.47.1 -> 1.47.2]