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x/tools/gopls: allow parallel request processing #32629

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muirdm opened this issue Jun 14, 2019 · 2 comments
Open

x/tools/gopls: allow parallel request processing #32629

muirdm opened this issue Jun 14, 2019 · 2 comments
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@muirdm
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@muirdm muirdm commented Jun 14, 2019

Currently all requests (e.g. signatureHelp, hover, complete, documentHighlight, etc) are processed synchronously, meaning they block subsequent requests/notifications. This includes the time they spend parsing and type checking, which can be significant. In particular, this is wasteful when a new didChange event comes in, since that "should" cancel all in-flight requests for that package, but currently it has to wait for them all to finish.

When gopls is ready for the extra complexity, @ianthehat says that these requests can change to do most of their work asynchronously.

@gopherbot gopherbot added this to the Unreleased milestone Jun 14, 2019
@gopherbot gopherbot added the gopls label Jun 14, 2019
@ianthehat ianthehat self-assigned this Jun 14, 2019
@gopherbot gopherbot added the Tools label Sep 12, 2019
@stamblerre stamblerre modified the milestones: Unreleased, gopls unplanned Dec 4, 2019
@stamblerre stamblerre modified the milestones: gopls unplanned, gopls/v1.0.0 Jan 29, 2020
@stamblerre stamblerre modified the milestones: gopls/v0.6.0, gopls/v0.7.0 Apr 2, 2020
@stamblerre stamblerre removed this from the gopls/v0.7.0 milestone Jun 24, 2020
@muirdm
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@muirdm muirdm commented Jul 30, 2020

I'm closing this out since I don't think it is an issue anymore. AFAIK request cancelation jumps the queue now which solves the primary issue.

@muirdm muirdm closed this Jul 30, 2020
@stamblerre
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@stamblerre stamblerre commented Jul 30, 2020

I'm actually going to reopen this because it's caused problems in the context of other issues, like golang/vscode-go#236. Requests can block behind one really slow request. It is definitely less critical though.

@stamblerre stamblerre reopened this Jul 30, 2020
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