Re: Mechanic on Eclipse Luna- restart is prompting a fix that has already been appied

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Robert Konigsberg

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Jul 27, 2014, 9:14:30 PM7/27/14
to workspacemechanic
-issues list, +correct list.

Also, I cannot figure out how to get Luna installed on my Mac. I hate
installing Eclipse for Mac. Look, I'm just going to have to get to
this when I can. Sorry.

On Sun, Jul 27, 2014 at 8:21 PM, Omar I <allen.gu...@gmail.com> wrote:
> I am using 1.7 but also tried 1.6 with no success in either.
>
>
> On Saturday, July 26, 2014 4:59:50 PM UTC-7, Robert Konigsberg wrote:
>>
>> I don't think this matters, but what version of Java are you using to
>> run Eclipse?
>>
>> On Sat, Jul 26, 2014 at 5:41 PM, Flávio Albuquerque Camilo
>> <flavio...@gmail.com> wrote:
>> > The same occurs here.
>> >
>> > My environment is an OS X 10.9.4, Eclipse Luna, Workspace Mechanic
>> > 0.4.0,
>> > but with only one preferencies file.
>> >
>> >
>> > On Thursday, July 24, 2014 2:03:39 PM UTC-3, Omar I wrote:
>> >>
>> >> I am running on Mac OS X 10.9.2
>> >> I downloaded eclipse kepler SR2 standard now, installed workspace
>> >> mechanic
>> >> 0.4.0 and loaded the two epf files
>> >> Upon closing and restarting, the issue doesn't appear.
>> >> This issue only seems to exist in the luna release of eclipse
>> >>
>> >> Let me know if you have further questions and if you were able to
>> >> replicate the issue.
>> >>
>> >> On Wednesday, July 23, 2014 6:45:54 PM UTC-7, Robert Konigsberg wrote:
>> >>>
>> >>> Can you verify that this problem does not occur in a pristene Kepler
>> >>> environment? Which operating system are you using?
>> >>>
>> >>>
>> >>>
>> >>> On Wed, Jul 23, 2014 at 5:49 PM, Omar I <allen.gu...@gmail.com> wrote:
>> >>> > Hi Robert, can you confirm you are experiencing the same issue?
>> >>> >
>> >>> >
>> >>> > On Wednesday, July 23, 2014 11:18:43 AM UTC-7, Omar I wrote:
>> >>> >>
>> >>> >> I have upgraded my eclipse from kepler to luna (4.4.0 standard
>> >>> >> edition)
>> >>> >> and I am experiencing something that is quite peculiar which I
>> >>> >> never
>> >>> >> encountered in kepler
>> >>> >>
>> >>> >> The best way to explain is by example, if I have 2 mechanic
>> >>> >> settings
>> >>> >> in 2
>> >>> >> different .epf files, one that sets the default editor of HTML and
>> >>> >> the
>> >>> >> other
>> >>> >> CSS.
>> >>> >> I then apply the two settings and I can verify the settings are all
>> >>> >> correctly applied, and the mechanic displays that all settings have
>> >>> >> been
>> >>> >> applied.
>> >>> >> However, upon closing eclipse and restarting, the mechanic alerts
>> >>> >> me
>> >>> >> that
>> >>> >> one of the settings have not been set correctly even though if I
>> >>> >> manually
>> >>> >> check the preferences they all seem to be correctly configured.
>> >>> >> Again,
>> >>> >> apply
>> >>> >> that one setting it is alerting me about, seems fine, close
>> >>> >> eclipse,
>> >>> >> restart, and again it prompts with that same remaining setting.
>> >>> >>
>> >>> >> In another case, if I have, say 10 settings, it would fix all 10
>> >>> >> but
>> >>> >> upon
>> >>> >> restarting it would show that one of them wasn't applied even
>> >>> >> though
>> >>> >> all 10
>> >>> >> have been applied.
>> >>> >>
>> >>> >> To my knowledge you can have an arbitrary number of settings, but
>> >>> >> only
>> >>> >> 1
>> >>> >> will show it hasn't been configured.
>> >>> >>
>> >>> >> To duplicate, 1) you must have luna installed 2) you can simply
>> >>> >> create
>> >>> >> two
>> >>> >> .epf files like my first example 3) apply the fixes of the 2 epf
>> >>> >> files
>> >>> >> 4)
>> >>> >> restart eclipse
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> > --
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>> >>> > Groups
>> >>> > "workspacemechanic-issues" group.
>> >>> > To unsubscribe from this group and stop receiving emails from it,
>> >>> > send
>> >>> > an
>> >>> > email to workspacemechanic-...@googlegroups.com.
>> >>> > For more options, visit https://groups.google.com/d/optout.
>> >>>
>> >>>
>> >>>
>> >>> --
>> >>> Robert Konigsberg
>> >
>> > --
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>>
>>
>> --
>> Robert Konigsberg
>
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Robert Konigsberg

Bastian Echterhölter

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Nov 4, 2014, 7:08:15 PM11/4/14
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Hi, 
I experience a similar or the same issue on luna on mac. 

Another thing i saw which may be the reason for the problem is that i see an error when eclipse shuts down in the <workspacedir>/.metadata/.log file:

!ENTRY com.google.eclipse.mechanic 4 0 2014-11-04 15:55:17.591
!MESSAGE FrameworkEvent ERROR
!STACK 0
org.osgi.framework.BundleException: Exception in com.google.eclipse.mechanic.plugin.core.MechanicPlugin.stop() of bundle com.google.eclipse.mechanic.
at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:847)
at org.eclipse.osgi.internal.framework.EquinoxBundle.stopWorker0(EquinoxBundle.java:950)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.stopWorker(EquinoxBundle.java:324)
at org.eclipse.osgi.container.Module.doStop(Module.java:626)
at org.eclipse.osgi.container.Module.stop(Module.java:488)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.decStartLevel(ModuleContainer.java:1623)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1542)
at org.eclipse.osgi.container.SystemModule.stopWorker(SystemModule.java:248)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule.stopWorker(EquinoxBundle.java:145)
at org.eclipse.osgi.container.Module.doStop(Module.java:626)
at org.eclipse.osgi.container.Module.stop(Module.java:488)
at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:186)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:160)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.eclipse.swt.SWTException: Invalid thread access
at org.eclipse.swt.SWT.error(SWT.java:4441)
at org.eclipse.swt.SWT.error(SWT.java:4356)
at org.eclipse.swt.SWT.error(SWT.java:4327)
at org.eclipse.swt.widgets.Display.error(Display.java:1083)
at org.eclipse.swt.widgets.Display.createDisplay(Display.java:840)
at org.eclipse.swt.widgets.Display.create(Display.java:823)
at org.eclipse.swt.graphics.Device.<init>(Device.java:130)
at org.eclipse.swt.widgets.Display.<init>(Display.java:714)
at org.eclipse.swt.widgets.Display.<init>(Display.java:705)
at org.eclipse.swt.widgets.Display.getDefault(Display.java:1403)
at com.google.eclipse.mechanic.MechanicService.notifyListener(MechanicService.java:342)
at com.google.eclipse.mechanic.MechanicService.notifyListeners(MechanicService.java:331)
at com.google.eclipse.mechanic.MechanicService.setStatus(MechanicService.java:322)
at com.google.eclipse.mechanic.MechanicService.stop(MechanicService.java:150)
at com.google.eclipse.mechanic.plugin.core.MechanicPlugin.stop(MechanicPlugin.java:68)
at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:827)
at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:820)
... 13 more
Root exception:
org.eclipse.swt.SWTException: Invalid thread access
at org.eclipse.swt.SWT.error(SWT.java:4441)
at org.eclipse.swt.SWT.error(SWT.java:4356)
at org.eclipse.swt.SWT.error(SWT.java:4327)
at org.eclipse.swt.widgets.Display.error(Display.java:1083)
at org.eclipse.swt.widgets.Display.createDisplay(Display.java:840)
at org.eclipse.swt.widgets.Display.create(Display.java:823)
at org.eclipse.swt.graphics.Device.<init>(Device.java:130)
at org.eclipse.swt.widgets.Display.<init>(Display.java:714)
at org.eclipse.swt.widgets.Display.<init>(Display.java:705)
at org.eclipse.swt.widgets.Display.getDefault(Display.java:1403)
at com.google.eclipse.mechanic.MechanicService.notifyListener(MechanicService.java:342)
at com.google.eclipse.mechanic.MechanicService.notifyListeners(MechanicService.java:331)
at com.google.eclipse.mechanic.MechanicService.setStatus(MechanicService.java:322)
at com.google.eclipse.mechanic.MechanicService.stop(MechanicService.java:150)
at com.google.eclipse.mechanic.plugin.core.MechanicPlugin.stop(MechanicPlugin.java:68)
at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:827)
at org.eclipse.osgi.internal.framework.BundleContextImpl$4.run(BundleContextImpl.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.framework.BundleContextImpl.stop(BundleContextImpl.java:820)
at org.eclipse.osgi.internal.framework.EquinoxBundle.stopWorker0(EquinoxBundle.java:950)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.stopWorker(EquinoxBundle.java:324)
at org.eclipse.osgi.container.Module.doStop(Module.java:626)
at org.eclipse.osgi.container.Module.stop(Module.java:488)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.decStartLevel(ModuleContainer.java:1623)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1542)
at org.eclipse.osgi.container.SystemModule.stopWorker(SystemModule.java:248)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule.stopWorker(EquinoxBundle.java:145)
at org.eclipse.osgi.container.Module.doStop(Module.java:626)
at org.eclipse.osgi.container.Module.stop(Module.java:488)
at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:186)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:160)
at java.lang.Thread.run(Thread.java:745)

Please let me know if that helps to get to the bottom of this issue.

Cheers,
Bastian

Alex Blewitt

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Nov 4, 2014, 7:27:09 PM11/4/14
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I suspect the error is coming from here:


    Display.getDefault().asyncExec(new NotificationDispatcher(listener, currentStatus));

If this is called after the Display has been disposed, you’ll get these messages. It looks like Display.getDefault() attempts to create a Display if one doesn’t already exist, and that’s failing. This probably isn’t serious (the framework is being shut down at the time) but if there were a try/catch block with no effect then it would reduce the errors being written to the console.

Display display = null;
try {
  display = Display.getDefauilt();
} catch (SWTException e) {
}
if(display != null) display.asyncExec(...)

I wonder also if it could be guarded with isStopped() or not - it seems like the bundle does stop the service when it’s going down, but events could still be sent to registered listeners after stopping.

Alex
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Robert Konigsberg

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Nov 4, 2014, 9:13:58 PM11/4/14
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Alex, patches welcome, though that doesn't seem particularly valuable.

Guarding by isStopped() _seems_ wrong, since race conditions can happen.
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