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Bug 321249

Summary:

Invalid thread access during Fading

Product:

[Eclipse Project] Platform

Reporter:

Benjamin Muskalla <b.muskalla>

Component:

SWT

Assignee:

Platform-SWT-Inbox <platform-swt-inbox>

Status:

RESOLVED WORKSFORME

QA Contact:

Severity:

normal

Priority:

CC:

bulrich, eclipse.felipe, remy.suen, steffen.pingel

Version:

3.6

Target Milestone:

---

Hardware:

OS:

Linux

Whiteboard:

Attachments:

Description	Flags
SWTUtil.java	none

Description Benjamin Muskalla

2010-07-29 13:02:21 EDT

Mylyn SDK	3.5.0.I20100626-2300-e3x

Happend during IDE startup. No steps, sorry.


-- Error Details --
Date: Thu Jul 29 18:51:44 CEST 2010
Message: An internal error occurred during: "Fading".
Severity: Error
Product: Eclipse SDK 3.6.0.v201006080911 (org.eclipse.sdk.ide)
Plugin: org.eclipse.core.jobs
Session Data:
eclipse.buildId=I20100608-0911
java.version=1.6.0_20
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Framework arguments:  -showLocation
Command-line arguments:  -os linux -ws gtk -arch x86 -showLocation


Exception Stack Trace:
org.eclipse.swt.SWTException: Invalid thread access
at org.eclipse.swt.SWT.error(SWT.java:4083)
at org.eclipse.swt.SWT.error(SWT.java:3998)
at org.eclipse.swt.SWT.error(SWT.java:3969)
at org.eclipse.swt.widgets.Widget.error(Widget.java:466)
at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:404)
at org.eclipse.swt.widgets.Shell.setAlpha(Shell.java:1554)
at org.eclipse.mylyn.internal.commons.ui.SwtUtil$FadeJob$2.run(SwtUtil.java:137)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:179)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4294)
at org.eclipse.mylyn.internal.commons.ui.SwtUtil$FadeJob.run(SwtUtil.java:126)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Comment 1 Steffen Pingel

2010-07-29 14:44:46 EDT

Moving to platform to get some input. The code snippet looks like this:

			Display.getDefault().syncExec(new Runnable() {
				public void run() {
					if (stopped) {
						return;
					}

					if (shell.isDisposed()) {
						stopped = true;
						return;
					}

					shell.setAlpha(currentAlpha);
					...
				}
			});
			
			
Under what circumstances would the invocation of shell.setAlpha(...) cause an InvalidThreadException?

Comment 2 Felipe Heidrich

2010-07-30 12:16:01 EDT

is SwtUtil$FadeJob$2.run running code in another thread ?

The code snippet in comment 1 can not be causing InvalidThreadException.

Comment 3 Steffen Pingel

2010-07-30 14:46:04 EDT

Created attachment 175603 [details]
SWTUtil.java

Comment 4 Steffen Pingel

2010-07-30 14:48:24 EDT

As far as I can tell, the Runnable should execute on the UI thread only. I have attached the whole class for reference.

Benjamin, just to be sure, you are running a recent version of Mylyn, right?

Comment 5 Benjamin Muskalla

2010-08-04 18:08:22 EDT

Mylyn SDK	3.5.0.I20100626-2300-e3x

Comment 6 Steffen Pingel

2012-01-01 17:53:23 EST

Benjamin, are you still seeing this error?

Comment 7 Benjamin Muskalla

2012-01-03 10:40:32 EST

Haven't seen it in a while.

Comment 8 Steffen Pingel

2012-01-03 11:28:17 EST

Thanks. I'll mark this as closed for now. Please reopen in case you run into this again.