77 lines
1.7 KiB
Markdown
77 lines
1.7 KiB
Markdown
|
# Golang Concurrency Manager [](https://travis-ci.com/zenthangplus/goccm)
|
||
|
|
|
||
|
|
Golang Concurrency Manager package limits the number of goroutines that are allowed to run concurrently.
|
||
|
|
|
||
|
|
### Installation
|
||
|
|
|
||
|
|
Run the following command to install this package:
|
||
|
|
|
||
|
|
```
|
||
|
|
$ go get -u github.com/zenthangplus/goccm
|
||
|
|
```
|
||
|
|
|
||
|
|
### Example
|
||
|
|
|
||
|
|
```go
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"github.com/zenthangplus/goccm"
|
||
|
|
"time"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
// Limit 3 goroutines to run concurrently.
|
||
|
|
c := goccm.New(3)
|
||
|
|
|
||
|
|
for i := 1; i <= 10; i++ {
|
||
|
|
|
||
|
|
// This function has to call before any goroutine
|
||
|
|
c.Wait()
|
||
|
|
|
||
|
|
go func(i int) {
|
||
|
|
fmt.Printf("Job %d is running\n", i)
|
||
|
|
time.Sleep(2 * time.Second)
|
||
|
|
|
||
|
|
// This function has to when a goroutine has finished
|
||
|
|
// Or you can use `defer c.Done()` at the top of goroutine.
|
||
|
|
c.Done()
|
||
|
|
}(i)
|
||
|
|
}
|
||
|
|
|
||
|
|
// This function has to call to ensure all goroutines have finished
|
||
|
|
// after close the main program.
|
||
|
|
c.WaitAllDone()
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
### List of supported functions
|
||
|
|
|
||
|
|
```go
|
||
|
|
package main
|
||
|
|
|
||
|
|
import "github.com/zenthangplus/goccm"
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
// Create the concurrency manager
|
||
|
|
// The first argument is the maximum number of goroutines to run concurrently.
|
||
|
|
c := goccm.New(10)
|
||
|
|
|
||
|
|
// Wait until a slot is available for the new goroutine.
|
||
|
|
c.Wait()
|
||
|
|
|
||
|
|
// Mark a goroutine as finished
|
||
|
|
c.Done()
|
||
|
|
|
||
|
|
// Wait for all goroutines are done
|
||
|
|
c.WaitAllDone()
|
||
|
|
|
||
|
|
// Close the manager manually
|
||
|
|
c.Close()
|
||
|
|
|
||
|
|
// Returns the number of goroutines which are running
|
||
|
|
c.RunningCount()
|
||
|
|
}
|
||
|
|
```
|