goid

An inelegant but efficient way to get the goroutine id.

Forked from rpccloud/goid. All credit to tslearn for figuring out how to call getg() from user code.

Usage

package main

import (
  "fmt"
  "github.com/observeinc/goid"
)

func main() {
  fmt.Println("Current Goroutine ID:", goid.GetGoID())
}

Benchmark

$ go test -bench .
goos: linux
goarch: amd64
pkg: github.com/observeinc/goid
cpu: 11th Gen Intel(R) Core(TM) i9-11950H @ 2.60GHz
BenchmarkSlowGid-16       472669              2565 ns/op              64 B/op          2 allocs/op
BenchmarkFastGid-16     950177301                1.352 ns/op           0 B/op          0 allocs/op
BenchmarkGetGoID-16     563974591                2.009 ns/op           0 B/op          0 allocs/op
PASS
ok      github.com/observeinc/goid      4.026s