golang goroutine Example Sample Code

I don't think basic use of pthreads is that different in complexity from goroutines but it's neat to see lightweight threads as a built-in language feature. goroutine usage superficially looks a lot like costates in Dynamic C, a proprietary nonstandard compiler for the Rabbit series of Z80 derived CPUs from Digi International. It's a really useful feature on a single core 8-bit microcontroller that frees you having "one big loop" with brittle timing in an embedded application.

Code:

package main

import (
"fmt"
"runtime"
"time"
)


func thread1(counter chan int) {
count := 0
for {
fmt.Println("Hello from thread 1")
runtime.Gosched() // force yield
time.Sleep(5 * time.Second)

count++
counter <- count
}
}

func thread2(counter chan int) {
count := 0
for {
 fmt.Println("Hello from thread 2")
 runtime.Gosched() // force yield
 time.Sleep(5 * time.Second)

 count++
 counter <- count
}
}

func main() {
c1 := make(chan int)
c2 := make(chan int)

go thread1(c1)
go thread2(c2)

for {
  count1 := <-c1
  count2 := <-c2
  fmt.Println("main() is alive ", count1, count2)
   time.Sleep(5 * time.Second)
 runtime.Gosched() // force yield
}
}

Output:

Hello from thread 1

Hello from thread 2

Hello from thread 1

Hello from thread 2

main() is alive  1 1

Hello from thread 2

Hello from thread 1

main() is alive  2 2

main() is alive  3 3

Hello from thread 2

Hello from thread 1

main() is alive  4 4

Hello from thread 2

Hello from thread 1

main() is alive  5 5

Hello from thread 2

Hello from thread 1

main() is alive  6 6

Hello from thread 1

Hello from thread 2