Golang Runtime Info

For golang, we can get information about runtime easily, via runtime pkg.

Golang related env

We can get info about golang, e.g.

• Compiler
• OS
• Arch
• Root Dir
• Version
• …

runtime-info.go

package main

import (
    "fmt"
    "runtime"
)

func main() {
    fmt.Println(runtime.Compiler)

    fmt.Println(runtime.GOOS)
    fmt.Println(runtime.GOARCH)

    fmt.Println(runtime.GOROOT())
    fmt.Println(runtime.Version())
}

For my situation, I get:

$ go run main.go
gc
darwin
amd64
/Users/jeffreyleeli/src/go-darwin_amd64
go1.2.2

Machine related info

In the meantime, we can know info about machine, like:

• CPU Num
• …

main.go

package main

import (
    "fmt"
    "runtime"
)

func main() {
    fmt.Println(runtime.NumCPU())
}

On my machine, I get:

$ go run main.go
4

Anything else?

Of course! If you dive deep enough, you can get things about goroutines, callers etc, as well as debug info and other interesting ones.

So go for it.