Is it possible to pin a goroutine to a specific system thread?

In Go (Golang), goroutines are not bound to specific system threads. The Go scheduler independently distributes goroutines across OS threads for efficient resource utilization.

However, if there is a need to execute code in the context of a specific thread (for example, to interact with a C library that requires calls from a single thread), you can use the runtime.LockOSThread() function. It binds the current goroutine to a system thread until runtime.UnlockOSThread() is called.

Example:

import (
    "runtime"
)

func main() {
    runtime.LockOSThread()
    defer runtime.UnlockOSThread()
    // code that should run on a single system thread
}

But in regular practice, binding a goroutine to a thread is unnecessary and not recommended, as it reduces scheduler efficiency.