Fix UI-thread hang when resuming the target during launch#1596
Draft
WardenGnaw wants to merge 1 commit into
Draft
Fix UI-thread hang when resuming the target during launch#1596WardenGnaw wants to merge 1 commit into
WardenGnaw wants to merge 1 commit into
Conversation
AD7Engine.ContinueFromSynchronousEvent (the AD7ProgramCreateEvent path) dispatched ResumeFromLaunch through the blocking WorkerThread.RunOperation, coupling the VS UI/SDM thread to debugger I/O. Over a slow or remote (SSH) transport, AD7Engine.ContinueFromSynchronousEvent + ResumeFromLaunch could stall for a long time or indefinitely, producing a Watson hang. - Add WorkerThread.PostAsyncOperation, a non-blocking dispatch that claims the running-op slot (so later AD7 operations still serialize behind it) but returns without waiting for completion. Faults from the operation are routed to an onError callback from both the synchronous and async completion paths. - ContinueFromSynchronousEvent now posts ResumeFromLaunch via PostAsyncOperation and returns S_OK immediately, so the UI thread is no longer blocked. Resume faults report through SendStartDebuggingError + Terminate via onError, and synchronous failures (OnLoadComplete or the dispatch itself) are still handled locally, since the SDM drops errors returned from this method. - [x] Built and tested locally - [x] Debugged through WSL Linux gdb and the async resume completed.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
AD7Engine.ContinueFromSynchronousEvent (the AD7ProgramCreateEvent path) dispatched ResumeFromLaunch through the blocking WorkerThread.RunOperation, coupling the VS UI/SDM thread to debugger I/O. Over a slow or remote (SSH) transport, AD7Engine.ContinueFromSynchronousEvent + ResumeFromLaunch could stall for a long time or indefinitely, producing a Watson hang.
Add WorkerThread.PostAsyncOperation, a non-blocking dispatch that claims the running-op slot (so later AD7 operations still serialize behind it) but returns without waiting for completion. Faults from the operation are routed to an onError callback from both the synchronous and async completion paths.
ContinueFromSynchronousEvent now posts ResumeFromLaunch via PostAsyncOperation and returns S_OK immediately, so the UI thread is no longer blocked. Resume faults report through SendStartDebuggingError + Terminate via onError, and synchronous failures (OnLoadComplete or the dispatch itself) are still handled locally, since the SDM drops errors returned from this method.
Built and tested locally