Context menu on Java project freezes

[davidburkhart]

When I select multiple Java-Projects in the package explorer, open the context menu and move the mouse over "Run As" or "Debug As" the menu and also eclipse freezes. After several minutes eclipse is responding again. Opening a jconsole during the freeze and checking the main-Thread I get the following stack trace:
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findJavaProject(RequiredJavaProjects.java:37)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:26)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.RequiredJavaProjects.findFor(RequiredJavaProjects.java:28)
org.projectusus.autotestsuite.core.internal.CommonDependencyRoot.findFor(CommonDependencyRoot.java:20)
org.projectusus.autotestsuite.core.internal.CommonDependencyRoot.existsFor(CommonDependencyRoot.java:29)
org.projectusus.autotestsuite.ui.internal.shortcuts.MultiProjectJUnitPropertyTester.test(MultiProjectJUnitPropertyTester.java:17)
org.eclipse.core.internal.expressions.Property.test(Property.java:58)
.....

[marcphilipp]

Hmm, the code doesn't look wrong at first sight. Let's try to debug this in your workspace together.

[maxbechtold]

I'm not able to reproduce this with Usus 0.8.0 and the MultiProject JUnit Runner installed (which is added by org.projectusus.autotestsuite). "Run As" or "Debug As" open promptly with only the "Run configurations..." action present. The Package explorer selection contains 10+ projects with the following natures enabled:

<nature>org.eclipse.pde.PluginNature</nature>
<nature>org.eclipse.jdt.core.javanature</nature>

Did you try and debug it, and does one of you remember the outcome?
Perhaps you still remember the context (e.g. multi module Maven projects)?