BlackForest/GQueue.go

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package main
import (
"errors"
"time"
)
type GQueue chan interface{}
const (
ERR_GQUEUE_TIMEOUT string = "gqueue timeout"
)
func (my *GQueue) Init(size int) *GQueue {
*my = make(chan interface{}, size)
return my
}
func (my *GQueue) EnQueueSync(itm interface{}) {
*my <- itm
}
func (my *GQueue) EnQueue(itm interface{}, timeout time.Duration) error {
select {
case *my <- itm:
return nil
case <-time.After(timeout):
return errors.New(ERR_GQUEUE_TIMEOUT)
}
}
func (my *GQueue) DeQueueSync() interface{} {
itm := <-*my
return itm
}
func (my *GQueue) DeQueue(timeout time.Duration) (interface{}, error) {
var itm interface{}
select {
case itm = <-*my:
return itm, nil
case <-time.After(timeout):
return nil, errors.New(ERR_GQUEUE_TIMEOUT)
}
}