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vpupkin / chromedevtools

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Exception occurred when stepping #54

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
SDK/Debugger version: 0.3.0
Eclipse version: 3.7 (indigo)
Google Chrome/V8 Embedder + version: 16.0.912.59 beta-m
OS + version: windows 7

What steps will reproduce the problem?

1. launch debug with Webkit Protocol (Wip Backend: WK@97678)
2. add breakpoint to js in virtual project
3. suspended by hitting breakpoint
4. press f5 in eclipse (step into)

What is the expected result?
No exception.

What happens instead?
NPE occurred.

I guess following code casuse NPE.

org.chromium.debug.core.model.ConnectedTargetData.DebugEventListenerImpl.resumed
() {
...
singleThread.getRemoteEventListener().resumed(null);
}

org.chromium.debug.core.model.JavascriptThread.RemoteEventListener.resumed(Resum
eReason) function can't accept null as argument.

Please provide any additional information below. If possible, attach a
(reduced) test-case.

Exception:
eclipse.buildId=M20110909-1335
java.version=1.6.0_23
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=ko_KR
Framework arguments:  -product org.eclipse.epp.package.modeling.product
Command-line arguments:  -os win32 -ws win32 -arch x86 -product 
org.eclipse.epp.package.modeling.product

Error
Fri Dec 09 14:52:42 KST 2011
An internal error has occurred.

java.lang.NullPointerException
    at org.chromium.debug.core.model.JavascriptThread$ResumeReason.access$3(JavascriptThread.java:559)
    at org.chromium.debug.core.model.JavascriptThread$RunningState.isStepping(JavascriptThread.java:383)
    at org.chromium.debug.core.model.JavascriptThread.isStepping(JavascriptThread.java:236)
    at org.chromium.debug.core.model.StackFrameBase.isStepping(StackFrameBase.java:39)
    at org.eclipse.debug.internal.ui.viewers.update.DefaultSelectionPolicy.isSticky(DefaultSelectionPolicy.java:110)
    at org.eclipse.debug.internal.ui.viewers.update.DefaultSelectionPolicy.overrides(DefaultSelectionPolicy.java:87)
    at org.eclipse.debug.internal.ui.viewers.update.DefaultSelectionPolicy.overrides(DefaultSelectionPolicy.java:69)
    at org.eclipse.debug.internal.ui.viewers.model.InternalTreeModelViewer.overrideSelection(InternalTreeModelViewer.java:1710)
    at org.eclipse.debug.internal.ui.viewers.model.TreeModelContentProvider.handleSelect(TreeModelContentProvider.java:353)
    at org.eclipse.debug.internal.ui.viewers.model.ModelContentProvider.updateNodes(ModelContentProvider.java:1464)
    at org.eclipse.debug.internal.ui.viewers.model.ModelContentProvider.updateNodes(ModelContentProvider.java:1469)
    at org.eclipse.debug.internal.ui.viewers.model.ModelContentProvider.updateNodes(ModelContentProvider.java:1469)
    at org.eclipse.debug.internal.ui.viewers.model.ModelContentProvider.updateNodes(ModelContentProvider.java:1469)
    at org.eclipse.debug.internal.ui.viewers.model.ModelContentProvider.updateModel(ModelContentProvider.java:1414)
    at org.eclipse.debug.internal.ui.viewers.model.ModelContentProvider.doModelChanged(ModelContentProvider.java:1385)
    at org.eclipse.debug.internal.ui.viewers.model.ModelContentProvider.access$8(ModelContentProvider.java:1379)
    at org.eclipse.debug.internal.ui.viewers.model.ModelContentProvider$14.runInUIThread(ModelContentProvider.java:1369)
    at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

Original issue reported on code.google.com by hivemin...@gmail.com on 9 Dec 2011 at 6:04

GoogleCodeExporter commented 9 years ago

Original comment by peter.ry...@gmail.com on 11 Dec 2011 at 12:52

GoogleCodeExporter commented 9 years ago 
Thank you for reporting.
Do you know how "resumed" event comes alone (without response for any 
step/continue command)? Normally SDK send step_* and receives response. 
"Resumed" event is ignored.

Original comment by peter.ry...@gmail.com on 11 Dec 2011 at 7:46

GoogleCodeExporter commented 9 years ago 
Fixed in HEAD.

Original comment by peter.ry...@gmail.com on 12 Dec 2011 at 4:56

GoogleCodeExporter commented 9 years ago 
Fixed in 0.3.2

Original comment by peter.ry...@gmail.com on 13 Dec 2011 at 12:12

GoogleCodeExporter commented 9 years ago 
I'm still getting this error with 0.3.4 when trying to connect in remote debug.

java.lang.NullPointerException
    at org.chromium.debug.core.model.ConnectedTargetData$DebugEventListenerImpl.disconnected(ConnectedTargetData.java:294)
    at org.chromium.sdk.internal.standalonev8.StandaloneVmImpl.onDebuggerDetachedImpl(StandaloneVmImpl.java:174)
    at org.chromium.sdk.internal.standalonev8.StandaloneVmImpl.detach(StandaloneVmImpl.java:152)
    at org.chromium.debug.core.model.DebugTargetImpl$1.destruct(DebugTargetImpl.java:77)
    at org.chromium.sdk.util.DestructingGuard.doFinally(DestructingGuard.java:32)
    at org.chromium.debug.ui.launcher.LaunchTypeBase.launch(LaunchTypeBase.java:101)
    at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:854)
    at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:703)
    at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:937)
    at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1141)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Chromium JavaScript Remote Debugger=0.3.4.201202250214
eclipse.buildId=M20120208-0800
java.version=1.7.0_03
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.jee.product
Command-line arguments:  -os linux -ws gtk -arch x86_64 -product 
org.eclipse.epp.package.jee.product

Original comment by gkorl...@gmail.com on 17 Apr 2012 at 9:09

GoogleCodeExporter commented 9 years ago 
I am also seeing the same exception using 0.3.4 with a fresh Indigo Javascript 
IDE and Node.js 0.6.18

java.lang.NullPointerException
    at org.chromium.debug.core.model.ConnectedTargetData$DebugEventListenerImpl.disconnected(ConnectedTargetData.java:294)

Original comment by colin.br...@gmail.com on 18 May 2012 at 5:31

GoogleCodeExporter commented 9 years ago 
I'm having the same issue, I've been figure this out for the past couple 
hours/days and I can't....please help...thanks.

I'm getting this when I try to launch the debugger (It seems to only happens 
after I've installed VJET :(

java.lang.NullPointerException
    at org.chromium.debug.core.model.ConnectedTargetData$DebugEventListenerImpl.disconnected(ConnectedTargetData.java:298)
    at org.chromium.sdk.internal.standalonev8.StandaloneVmImpl.onDebuggerDetachedImpl(StandaloneVmImpl.java:174)
    at org.chromium.sdk.internal.standalonev8.StandaloneVmImpl.detach(StandaloneVmImpl.java:152)
    at org.chromium.debug.core.model.DebugTargetImpl$1.destruct(DebugTargetImpl.java:77)
    at org.chromium.sdk.util.DestructingGuard.doFinally(DestructingGuard.java:32)
    at org.chromium.debug.ui.launcher.LaunchTypeBase.launch(LaunchTypeBase.java:108)
    at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:853)
    at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:702)
    at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:924)
    at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1128)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

eclipse.buildId=M20110210-1200
java.version=1.7.0
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product 
org.eclipse.epp.package.java.product

Plugins:
  VJET All Features 1.0.0.201105260911  org.ebayopensource.vjet.all.feature.group
  ChromeDevTools SDK WIP Backends   0.1.8.201207022104  org.chromium.sdk.wipbackends.feature.group
  Chromium JavaScript Debugger Bridge to JSDT   0.3.6.201207022103  org.chromium.debug.jsdtbridge.feature.group
  Chromium JavaScript Remote Debugger   0.3.6.201207022103  org.chromium.debug.feature.group

Version: Helios Service Release 2
Build id: 20110218-0911

Original comment by abuck....@gmail.com on 8 Jul 2012 at 10:06

GoogleCodeExporter commented 9 years ago 
forgot to add the Node.js version: 0.6.19

Original comment by abuck....@gmail.com on 8 Jul 2012 at 10:12

GoogleCodeExporter commented 9 years ago 
It looks like there is an exception while initializing debug session. The 
problem is that the actual exception is hidden by this (less interesting) NPE.

Do you think you will be able to try to reproduce it with a patched Debugger 
(which I'm going to prepare)?

Original comment by peter.ry...@gmail.com on 8 Jul 2012 at 11:52

GoogleCodeExporter commented 9 years ago 
One more thing. Can I ask you please to file a separate issue for his problem. 
I believe it's not "occurred when stepping" anymore like the title says. This 
issue is closed.

Original comment by peter.ry...@gmail.com on 8 Jul 2012 at 11:58

GoogleCodeExporter commented 9 years ago 
Please update to 0.3.6 (to today's build 201207090605). This won't fix your 
problem, but we should finally see the cause exception. Please bring its 
stacktrace here.

Original comment by peter.ry...@gmail.com on 9 Jul 2012 at 3:05

GoogleCodeExporter commented 9 years ago 
Here we go, I've upgdated my node.js to 0.8.1 and seems that I'm getting a 
timeout issue now :( see 
http://code.google.com/p/chromedevtools/issues/detail?id=69&thanks=69&ts=1341807
943

thanks for looking at this, appreciated ! if you need any info or want me to 
try something, let me know, I'm more than open to help :)

Original comment by abuck....@gmail.com on 9 Jul 2012 at 4:26

GoogleCodeExporter commented 9 years ago 
I meant please update ChromeDevTools to 0.3.6
You better keep old Node.js, new one does get stuck for debug requests.
https://github.com/joyent/node/issues/3626
I sent them a fix, but I have no idea whether it will get in:
https://github.com/prybin/node/tree/dispatch_debug_messages

Original comment by peter.ry...@gmail.com on 9 Jul 2012 at 4:36

GoogleCodeExporter commented 9 years ago 
Yeah, sorry, I did updated to latest ChromeDevTools to 0.3.6 but thought it was 
a good idea to update node.js in the same time. Anyway, I downgraded node.js to 
0.6.19 and getting other issues (I'll update with the other thread).

Original comment by abuck....@gmail.com on 9 Jul 2012 at 4:46

GoogleCodeExporter commented 9 years ago 
Theoretically one can apply the patch and compile Node.JS himself, but it could 
be not too convenient.

Original comment by peter.ry...@gmail.com on 9 Jul 2012 at 4:50