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internal/lsp: add the worker package

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This is used by all the telemetry packages that come next

Change-Id: Ic84d91da2a792b53ee8839aae207ae5767ab17e0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/184940
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This commit is contained in:
Ian Cottrell 2019-07-08 12:51:26 -04:00
parent 4f9eeaf1bf
commit 8962968d5a
3 changed files with 32 additions and 1 deletions
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2
gopls/go.mod
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@ -4,4 +4,4 @@ go 1.11
require golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0
replace golang.org/x/tools => ../
replace golang.org/x/tools => ../

1
gopls/go.sum
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@ -1,5 +1,6 @@
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEhagSSnXWGV915qUMm9mrU=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

30
internal/lsp/telemetry/worker/worker.go Normal file
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@ -0,0 +1,30 @@
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package worker provides a very simple mechanism to allow telemetry packages
// to work cooperatively and efficiently.
package worker
var (
workQueue = make(chan func(), 100)
)
func init() {
go func() {
for task := range workQueue {
task()
}
}()
}
// Do adds a task to the list of things to work on in the background.
// All tasks will be handled in submission order, and no two tasks will happen
// concurrently so they do not need to do any kind of locking.
// It is safe however to call Do concurrently.
// No promises are made about when the tasks will be performed.
// This function may block, but in general it will return very quickly and
// before the task has been run.
func Do(task func()) {
workQueue <- task
}