Bug 563990 - [GTK][webkit] Eclipse freezes sometimes when showing proposals
Summary: [GTK][webkit] Eclipse freezes sometimes when showing proposals
Status: NEW
Alias: None
Product: Platform
Classification: Eclipse Project
Component: SWT (show other bugs)
Version: 4.15   Edit
Hardware: PC Linux
: P3 normal with 5 votes (vote)
Target Milestone: ---   Edit
Assignee: Platform-SWT-Inbox CLA
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-06-05 10:04 EDT by Alexander Suter CLA
Modified: 2020-12-21 05:50 EST (History)
4 users (show)

See Also:

Attachments
Threaddump (86.87 KB, text/plain)
2020-06-05 10:04 EDT, Alexander Suter CLA 		no flags Details
JVM Crash after taking a thread dump (364.52 KB, text/x-log)
2020-06-05 11:02 EDT, Alexander Suter CLA 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Alexander Suter CLA 2020-06-05 10:04:17 EDT 
Created attachment 283178 [details]
Threaddump

Eclipse is freezing when showing proposals in Java Editor. It seems that it want to show a swt webkit browser.

We built a product out of the eclipse platform and have implemented an own "Web Editor" which is based on a JavaFX. As soon as this was in charge eclipse freezes when showing proposals in the Java Editor.

JavaFX changes the name of the 'main'-Thread to "JavaFX Application Thread". This is not very nice, but maybe no problem at all?

It seems that somewhere here is something strange:
org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)

I think its a locking issue in webkit, but I'm not really sure ...

Have a look at the ThreadDump.
Comment 1 Andrey Loskutov CLA 2020-06-05 10:39:53 EDT 
Please provide exact Eclipse, GTK3 and webkit versions you are using.
Comment 2 Alexander Suter CLA 2020-06-05 10:47:13 EDT 
Eclipse: 4.15.0.v20200305-0155
GTK: org.eclipse.swt.internal.gtk.version=3.24.18 / libgtk-3-0:amd64 3.24.18-1ubuntu1 amd64
WebKit: org.eclipse.swt.gtk.linux.x86_64 / 3.114.0.v20200304-0601
Comment 3 Alexander Suter CLA 2020-06-05 10:56:04 EDT 
But the thread dump is from an older version of eclipse. At the moment I'm not able to take a thread dump anymore, because the jvm is crashing (bug in jvm). I will try to take another one, somehow. But its maybe the same place where the application is hanging.
Comment 4 Andrey Loskutov CLA 2020-06-05 10:57:25 EDT 
Please attach JVM crash log file.
Comment 5 Alexander Suter CLA 2020-06-05 11:02:01 EDT 
Created attachment 283179 [details]
JVM Crash after taking a thread dump

When creating a thread dump jvm is crashing. Therefore I have reported a bug report: https://github.com/AdoptOpenJDK/openjdk-support/issues/122
Comment 6 Alexander Suter CLA 2020-06-08 05:41:47 EDT 
The AdoptOpenJDK team has closed the issue https://github.com/AdoptOpenJDK/openjdk-support/issues/122. The assumption is that this must be fixed in the native libraries of eclipse.
Comment 7 Alexander Suter CLA 2020-08-03 07:48:29 EDT 
As stated in https://github.com/AdoptOpenJDK/openjdk-support/issues/122 the root cause seems to be in Eclipse or the product (Axon.ivy).
Comment 8 Simeon Andreev CLA 2020-12-21 04:16:59 EST 
(In reply to Alexander Suter from comment #7)
> As stated in https://github.com/AdoptOpenJDK/openjdk-support/issues/122 the
> root cause seems to be in Eclipse or the product (Axon.ivy).

The first SWT commit that I can see the jstack crash with is: https://git.eclipse.org/c/platform/eclipse.platform.swt.git/commit/?id=558be9a19c6de3c914ccbed0ac541d5c849bf1f5

Probably best to move this discussion in a separate ticket though.