Operation Id is changeable when trace WPF operations by embedded ETW provider
I'm trying to trace WPF operations by ETW provider embedded into PresentationSource.
When I traced real application I was bit by changing already triggered operation Id from Post to Start phase.
At the source code I found that Id is relied on address of the object which might be changed during GC operation:
https://referencesource.microsoft.com/#windowsbase/Base/System/Windows/Threading/DispatcherOperation.cs,dff34e59b0cffd1e
Does anybody know how to track by ETW such object relocation?
c# wpf garbage-collection dispatcher etw
asked Nov 20 '18 at 14:06
Evgeny BurmakovEvgeny Burmakov
185
add a comment |
I'm trying to trace WPF operations by ETW provider embedded into PresentationSource.
When I traced real application I was bit by changing already triggered operation Id from Post to Start phase.
At the source code I found that Id is relied on address of the object which might be changed during GC operation:
https://referencesource.microsoft.com/#windowsbase/Base/System/Windows/Threading/DispatcherOperation.cs,dff34e59b0cffd1e
Does anybody know how to track by ETW such object relocation?
c# wpf garbage-collection dispatcher etw
asked Nov 20 '18 at 14:06
Evgeny BurmakovEvgeny Burmakov
185
add a comment |
I'm trying to trace WPF operations by ETW provider embedded into PresentationSource.
When I traced real application I was bit by changing already triggered operation Id from Post to Start phase.
At the source code I found that Id is relied on address of the object which might be changed during GC operation:
https://referencesource.microsoft.com/#windowsbase/Base/System/Windows/Threading/DispatcherOperation.cs,dff34e59b0cffd1e
Does anybody know how to track by ETW such object relocation?
c# wpf garbage-collection dispatcher etw
asked Nov 20 '18 at 14:06
Evgeny BurmakovEvgeny Burmakov
185
I'm trying to trace WPF operations by ETW provider embedded into PresentationSource.
When I traced real application I was bit by changing already triggered operation Id from Post to Start phase.
At the source code I found that Id is relied on address of the object which might be changed during GC operation:
https://referencesource.microsoft.com/#windowsbase/Base/System/Windows/Threading/DispatcherOperation.cs,dff34e59b0cffd1e
Does anybody know how to track by ETW such object relocation?
c# wpf garbage-collection dispatcher etw
c# wpf garbage-collection dispatcher etw
asked Nov 20 '18 at 14:06
Evgeny BurmakovEvgeny Burmakov
185
asked Nov 20 '18 at 14:06
Evgeny BurmakovEvgeny Burmakov
185
edited Nov 20 '18 at 16:20
Evgeny Burmakov
asked Nov 20 '18 at 14:06
Evgeny BurmakovEvgeny Burmakov
185
asked Nov 20 '18 at 14:06
Evgeny BurmakovEvgeny Burmakov
185
asked Nov 20 '18 at 14:06
Evgeny BurmakovEvgeny Burmakov
185
185
add a comment |
add a comment |
1 Answer
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Such movement might be tracked by:
ProviderName: "Microsoft-Windows-DotNETRuntime"
EventName: "GC/GCBulkMovedObjectRanges"
Event might be parsed by ClrTraceEventParser.GCBulkMovedObjectRanges
Originally answered there:
https://social.msdn.microsoft.com/Forums/en-US/7b6f9918-60ee-4e23-b443-42b4895775ad/how-to-track-change-of-wpf-dispatcheroperation-id?forum=netfxbcl
UPDATE:
Due to tracing WPF operations I would say that approach with changeable ID is worst ever implementation. It is implemented incorrectly.
Id has fixed address position during gather that Id but whole operation isn't ensure that tracing message contains correct address. It might be already moved when event is raised.
I got next event sequence:
- WClientUIContextPost
- GCBulkMovedObjectRanges
- WClientUIContextPost
Where last one may contains moved or unmoved Id. Only gods know.
The event GCBulkMovedObjectRanges is usable in 95%. But sometimes it is fails.
So it no way to track it reliable. Very sadly that this architectural/implementation mistake turn feature unusable.
answered Nov 22 '18 at 14:52
Evgeny BurmakovEvgeny Burmakov
185
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Such movement might be tracked by:
ProviderName: "Microsoft-Windows-DotNETRuntime"
EventName: "GC/GCBulkMovedObjectRanges"
Event might be parsed by ClrTraceEventParser.GCBulkMovedObjectRanges
Originally answered there:
https://social.msdn.microsoft.com/Forums/en-US/7b6f9918-60ee-4e23-b443-42b4895775ad/how-to-track-change-of-wpf-dispatcheroperation-id?forum=netfxbcl
UPDATE:
Due to tracing WPF operations I would say that approach with changeable ID is worst ever implementation. It is implemented incorrectly.
Id has fixed address position during gather that Id but whole operation isn't ensure that tracing message contains correct address. It might be already moved when event is raised.
I got next event sequence:
- WClientUIContextPost
- GCBulkMovedObjectRanges
- WClientUIContextPost
Where last one may contains moved or unmoved Id. Only gods know.
The event GCBulkMovedObjectRanges is usable in 95%. But sometimes it is fails.
So it no way to track it reliable. Very sadly that this architectural/implementation mistake turn feature unusable.
answered Nov 22 '18 at 14:52
Evgeny BurmakovEvgeny Burmakov
185
add a comment |
Such movement might be tracked by:
ProviderName: "Microsoft-Windows-DotNETRuntime"
EventName: "GC/GCBulkMovedObjectRanges"
Event might be parsed by ClrTraceEventParser.GCBulkMovedObjectRanges
Originally answered there:
https://social.msdn.microsoft.com/Forums/en-US/7b6f9918-60ee-4e23-b443-42b4895775ad/how-to-track-change-of-wpf-dispatcheroperation-id?forum=netfxbcl
UPDATE:
Due to tracing WPF operations I would say that approach with changeable ID is worst ever implementation. It is implemented incorrectly.
Id has fixed address position during gather that Id but whole operation isn't ensure that tracing message contains correct address. It might be already moved when event is raised.
I got next event sequence:
- WClientUIContextPost
- GCBulkMovedObjectRanges
- WClientUIContextPost
Where last one may contains moved or unmoved Id. Only gods know.
The event GCBulkMovedObjectRanges is usable in 95%. But sometimes it is fails.
So it no way to track it reliable. Very sadly that this architectural/implementation mistake turn feature unusable.
answered Nov 22 '18 at 14:52
Evgeny BurmakovEvgeny Burmakov
185
add a comment |
Such movement might be tracked by:
ProviderName: "Microsoft-Windows-DotNETRuntime"
EventName: "GC/GCBulkMovedObjectRanges"
Event might be parsed by ClrTraceEventParser.GCBulkMovedObjectRanges
Originally answered there:
https://social.msdn.microsoft.com/Forums/en-US/7b6f9918-60ee-4e23-b443-42b4895775ad/how-to-track-change-of-wpf-dispatcheroperation-id?forum=netfxbcl
UPDATE:
Due to tracing WPF operations I would say that approach with changeable ID is worst ever implementation. It is implemented incorrectly.
Id has fixed address position during gather that Id but whole operation isn't ensure that tracing message contains correct address. It might be already moved when event is raised.
I got next event sequence:
- WClientUIContextPost
- GCBulkMovedObjectRanges
- WClientUIContextPost
Where last one may contains moved or unmoved Id. Only gods know.
The event GCBulkMovedObjectRanges is usable in 95%. But sometimes it is fails.
So it no way to track it reliable. Very sadly that this architectural/implementation mistake turn feature unusable.
answered Nov 22 '18 at 14:52
Evgeny BurmakovEvgeny Burmakov
185
Such movement might be tracked by:
ProviderName: "Microsoft-Windows-DotNETRuntime"
EventName: "GC/GCBulkMovedObjectRanges"
Event might be parsed by ClrTraceEventParser.GCBulkMovedObjectRanges
Originally answered there:
https://social.msdn.microsoft.com/Forums/en-US/7b6f9918-60ee-4e23-b443-42b4895775ad/how-to-track-change-of-wpf-dispatcheroperation-id?forum=netfxbcl
UPDATE:
Due to tracing WPF operations I would say that approach with changeable ID is worst ever implementation. It is implemented incorrectly.
Id has fixed address position during gather that Id but whole operation isn't ensure that tracing message contains correct address. It might be already moved when event is raised.
I got next event sequence:
- WClientUIContextPost
- GCBulkMovedObjectRanges
- WClientUIContextPost
Where last one may contains moved or unmoved Id. Only gods know.
The event GCBulkMovedObjectRanges is usable in 95%. But sometimes it is fails.
So it no way to track it reliable. Very sadly that this architectural/implementation mistake turn feature unusable.
answered Nov 22 '18 at 14:52
Evgeny BurmakovEvgeny Burmakov
185
edited Nov 29 '18 at 10:07
answered Nov 22 '18 at 14:52
Evgeny BurmakovEvgeny Burmakov
185
answered Nov 22 '18 at 14:52
Evgeny BurmakovEvgeny Burmakov
185
answered Nov 22 '18 at 14:52
Evgeny BurmakovEvgeny Burmakov
185
185
add a comment |
add a comment |
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