README
¶
Barrier
DEPRECATED - You probably want the standard library context instead, which can be used to achieve the same effect with cancellation.
Documentation: http://godoc.org/github.com/pwaller/barrier
Documentation
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Overview ¶
A barrier primitive which can be used to signal a permanent state change, for example to signal that shutdown should occur.
golang-nuts mailing list discussion: https://groups.google.com/d/topic/golang-nuts/RBQjg6YOiWA/discussion
Example:
package main
import (
"sync"
"github.com/pwaller/barrier"
)
func main() {
var w sync.WaitGroup
defer w.Wait() // Main should wait for its goroutines
var b barrier.Barrier
w.Add(1)
go func() {
defer w.Done()
defer b.Fall()
println("GO!")
<-b.Barrier() // Many goroutines can wait on the barrier
}()
w.Add(1)
go func() {
defer w.Done()
defer b.Fall()
println("GO!")
// When this goroutine happens to return,
// all barrier waits can be passed.
return
}()
}
Index ¶
Constants ¶
This section is empty.
Variables ¶
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Functions ¶
This section is empty.
Types ¶
type Barrier ¶
type Barrier struct {
// An optional hook, which if set, is called exactly once when the first
// b.Fall() is invoked.
FallHook func()
// contains filtered or unexported fields
}
The zero of Barrier is a ready-to-use value
func (*Barrier) Barrier ¶
func (b *Barrier) Barrier() <-chan struct{}
When `b.Fall()` is called, the channel returned by Barrier() is closed (and becomes always readable)
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