go-tools
A collection of tools for Golang, focusing on concurrency and goroutines
The multithreading library currently supports a ThreadTracker struct that allows you to easily manage goroutines.
- Create new goroutines.
- Wait for all goroutines to finish.
- Set deferred functions to be executed after goroutines finish.
- Easily handle panics inside goroutines with a panic handler.
- Stop the
threadTrackerfrom receiving new functions. - Fetch the number of currently active goroutines.
Install
Install the package with:
go get github.com/nikhilsaraf/go-tools/multithreading
Import it with:
import "github.com/nikhilsaraf/go-tools/multithreading"
and use multithreading as the package name inside the code.
Example
package main
import (
"fmt"
"github.com/nikhilsaraf/go-tools/multithreading"
)
func main() {
// create thread tracker instance
threadTracker := multithreading.MakeThreadTracker()
// start thread functions
for i := 0; i < 10; i++ {
err := threadTracker.TriggerGoroutine(func(inputs []interface{}) {
// pass `i` as a value to the goroutine and read from `inputs`.
// this is needed to "bind" the variable to this goroutine.
value := inputs[0].(int)
fmt.Printf("Goroutine #%d\n", value)
}, []interface{}{i})
if err != nil {
panic(err)
}
}
// wait for all threads to finish
threadTracker.Wait()
fmt.Printf("done\n")
}
Sample Output:
Goroutine #1
Goroutine #2
Goroutine #9
Goroutine #0
Goroutine #3
Goroutine #7
Goroutine #6
Goroutine #4
Goroutine #8
Goroutine #5
done
