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Don't wait on stream listening in DevTools start up #3333

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merged 4 commits into from Sep 9, 2021

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elliette
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@elliette elliette commented Sep 2, 2021

Follow-up to #3320 (reverted in #3321).

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elliette commented Sep 2, 2021

Made some changes from the original in response to #3320 (comment):

  • Removed the Future.wait
  • Moved the stream listening up so that it happens before initializing the isolates

@@ -286,7 +273,21 @@ class ServiceConnectionManager {
);
}
}
}));
}
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if we are worried about missing isolate events, what if we only await listening to streams that we are concerned about? perhaps kIsolate and kVM?

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cc @jacob314 for input on this

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Ok thought about this a bit more. If the VM is handling our requests in order we don't need to await any of these as long as we ensure that we send the request over the VM Service for the streams before we preform operations getting the current states of the streams. I would double check that we aren't loading isolate objects before the stream listen code and we should be good.

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I'm not sure if it matters in this case, but there's no guarantee that the VM service will finish processing a request before a more recent request is completed. Obviously this won't be an issue if you're the only client and you're awaiting on each service request, but just something to keep in mind.

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Confirmed that we are triggering the requests for streams before loading any isolate objects

@elliette elliette marked this pull request as ready for review September 3, 2021 21:30
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jacob314 commented Sep 9, 2021

lgtm

@elliette elliette merged commit 5058eb0 into flutter:master Sep 9, 2021
elliette added a commit that referenced this pull request Sep 10, 2021
jacob314 pushed a commit that referenced this pull request Sep 10, 2021
@elliette elliette deleted the streams-again branch December 24, 2021 00:24
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4 participants