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Deadlock while "Auto Share GIT projects" [message #1803843]

Tue, 12 March 2019 11:33

Alexander Fichtinger

Messages: 66
Registered: January 2013

Member

Hey guys,

we have included the EGit feature in our product.

We are creating an IProject programmatically. After the project is created we are copying some resources into the project, and then we perform a build.

Then an exception is thrown because there is a deadlock. The stacktrace is the following:

!ENTRY org.eclipse.core.jobs 4 2 2019-03-12 11:41:56.504
!MESSAGE Deadlock detected. All locks owned by thread main will be suspended.
!STACK 0
java.lang.IllegalStateException
at org.eclipse.core.internal.jobs.DeadlockDetector.reportDeadlock(DeadlockDetector.java:602)
at org.eclipse.core.internal.jobs.DeadlockDetector.lockWaitStart(DeadlockDetector.java:406)
at org.eclipse.core.internal.jobs.LockManager.addLockWaitThread(LockManager.java:157)
at org.eclipse.core.internal.jobs.OrderedLock.doAcquire(OrderedLock.java:171)
at org.eclipse.core.internal.jobs.OrderedLock.acquire(OrderedLock.java:109)
at org.eclipse.core.internal.jobs.OrderedLock.acquire(OrderedLock.java:85)
at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:125)
at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:2243)
at org.eclipse.core.internal.resources.Project.touch(Project.java:1319)
at org.eclipse.team.core.RepositoryProvider.map(RepositoryProvider.java:135)
at org.eclipse.egit.core.op.ConnectProviderOperation.connectProject(ConnectProviderOperation.java:165)
at org.eclipse.egit.core.op.ConnectProviderOperation.execute(ConnectProviderOperation.java:111)
at org.eclipse.egit.core.internal.job.JobUtil$1.run(JobUtil.java:55)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
!SUBENTRY 1 org.eclipse.core.jobs 4 2 2019-03-12 11:41:56.505
!MESSAGE Thread Worker-5: Auto share git projects has locks: MultiRule[P/SomeProject], P/SomeProject, OrderedLock (3) and is waiting for lock OrderedLock (0)
!SUBENTRY 1 org.eclipse.core.jobs 4 2 2019-03-12 11:41:56.505
!MESSAGE Thread main has locks: OrderedLock (0) and is waiting for lock P/SomeProject

Is it somehow possible to wait until the "Auto share GIT projects" job is done?
Or is it possible to deactivate the auto sharing for one specific project? We acutally don't need it.

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Re: Deadlock while "Auto Share GIT projects" [message #1803865 is a reply to message #1803843]

Tue, 12 March 2019 16:08

Thomas Wolf

Messages: 576
Registered: August 2016

Senior Member

What does the main thread do? Without stack trace and seeing actual code I cannot answer these questions. Are you creating the project and do other manipulations inside a workspace operation with a proper scheduling rule? If not, do so.

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Re: Deadlock while "Auto Share GIT projects" [message #1803884 is a reply to message #1803865]

Wed, 13 March 2019 06:50

Alexander Fichtinger

Messages: 66
Registered: January 2013

Member

We are creating some files. I thought that we do this in a job with proper scheduling rule.

However, we already fixed the problem. We used a different approach. Since we do not need the auto-sharing of the project, we deactivate the preference (InstanceScope.INSTANCE.getNode("org.eclipse.egit.core").putBoolean(GitCorePreferences.core_autoShareProjects, false)), before we are building the project. Then we activate it again.

This works fine for us.

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