【GoLang】golang context channel 详解

package main

import (
"fmt"
"time"

"golang.org/x/net/context"
)

func main() {
// ctx, cancelFunc := context.WithDeadline(context.Background(), time.Now().Add(time.Second*5))
ctx, cancelFunc := context.WithTimeout(context.Background(), time.Second*5)
ctx = context.WithValue(ctx, "Test", "123456")
// defer cancelFunc()

if t, ok := ctx.Deadline(); ok {
fmt.Println(time.Now())
fmt.Println(t.String())
}
go func(ctx context.Context) {
fmt.Println(ctx.Value("Test"))
for {
select {
case <-ctx.Done():
fmt.Println(ctx.Err())
return
// default:
// continue
}
}
}(ctx)
// if ctx.Err() == nil {
// fmt.Println("Sleep 10 seconds...")
// time.Sleep(time.Second * 10)
// }
// if ctx.Err() != nil {
// fmt.Println("Alredy exit...")
// }
time.Sleep(time.Second * 3)
cancelFunc()
// for {
// if ctx.Err() != nil {
// fmt.Println("gracefully exit...")
// break
// }
// }
}

go程序包源码解读——golang.org/x/net/context:  

http://m.blog.csdn.net/article/details?id=49100433

 

Go语言并发模型：像Unix Pipe那样使用channel:  

https://segmentfault.com/a/1190000006261218

 

 golang判断短chan channel是否关闭: 

http://www.dotcoo.com/golang-channel-is-closed

如何安全关闭channel： 

http://www.golangtc.com/t/53d8a5e1320b5252650000f0

channel小技巧：  http://www.jb51.net/article/68909.htm

使用Golang的Context管理上下文:  http://blog.csdn.net/u014029783/article/details/53782864

Go语言并发模型：使用 context:  https://segmentfault.com/a/1190000006744213

golang x/net/context包笔记:  http://blog.csdn.net/sryan/article/details/51969129

golang-context使用方式:  http://www.tuicool.com/articles/ENnyYvR

Golang 1.7.3 Context 简单用法.类似sync.WaitGroup:  http://blog.csdn.net/fyxichen/article/details/52104549

golang中context包解读:  http://www.tuicool.com/articles/n6rInyn

Go语言并发模型：使用 context:  http://www.tuicool.com/articles/3ieeuay