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proposal: Go 2: add routineMap in runtime package And value context support chaining create / config #40515

enddeadroyal opened this issue Jul 31, 2020 · 3 comments


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@enddeadroyal enddeadroyal commented Jul 31, 2020


1.Add routineMap in runtime package

type RoutineMap struct{}

func NewMap() *RoutineMap
func (rm RoutineMap) Put(v interface{})
func (rm RoutineMap) Get() (interface{}, boolfunc (rm RoutineMap) Remove()
routineMap := runtime.NewMap()
v, ok := routineMap.Get()

2.Value context support chaining create / config

ctx2 := context.WithValue(ctx, key, v).AddValue(key, v).AddValue(key, v)
@gopherbot gopherbot added this to the Proposal milestone Jul 31, 2020
@gopherbot gopherbot added the Proposal label Jul 31, 2020
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@ianlancetaylor ianlancetaylor commented Jul 31, 2020

This proposal is missing an explanation: why should we do this? Thanks.

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@davecheney davecheney commented Aug 5, 2020

This is a proposal for goroutine local storage hidden inside a global variable. This has been rejected in the past because it is a close analog of thread local storage and shares all the inherent limitations.

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@gopherbot gopherbot commented Sep 5, 2020

Timed out in state WaitingForInfo. Closing.

(I am just a bot, though. Please speak up if this is a mistake or you have the requested information.)

@gopherbot gopherbot closed this Sep 5, 2020
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