示例代码请访问：github.com/wenjianzhan…
任一任务完成就算完成
func runTask(id int) string {
time.Sleep(10 * time.Millisecond)
return fmt.Sprintf("The result is from %d\n", id)
}
func FristResponse() string {
numOfRunner := 10
ch := make(chan string)
for i := 0; i < numOfRunner; i++ {
go func(i int) {
ret := runTask(i)
ch <- ret
}(i)
}
return <-ch
}
func TestFristResponse(t *testing.T) {
t.Log("Before:", runtime.NumGoroutine())
t.Log(FristResponse())
time.Sleep(time.Second * 1)
t.Log("After:", runtime.NumGoroutine())
}
输出
=== RUN TestFristResponse
--- PASS: TestFristResponse (1.02s)
frist_response_test.go:28: Before: 2
frist_response_test.go:29: The result is from 1
frist_response_test.go:31: After: 11
PASS
Process finished with exit code 0
输出信息可以看到执行后还有11哥协程阻塞在哪里，时间长了就会造成资源的耗尽； 我们对程序进行一下调整
func runTask(id int) string {
time.Sleep(10 * time.Millisecond)
return fmt.Sprintf("The result is from %d\n", id)
}
func FristResponse() string {
numOfRunner := 10
ch := make(chan string,numOfRunner)
for i := 0; i < numOfRunner; i++ {
go func(i int) {
ret := runTask(i)
ch <- ret
}(i)
}
return <-ch
}
func TestFristResponse(t *testing.T) {
t.Log("Before:", runtime.NumGoroutine())
t.Log(FristResponse())
time.Sleep(time.Second * 1)
t.Log("After:", runtime.NumGoroutine())
}
输出
=== RUN TestFristResponse
--- PASS: TestFristResponse (1.01s)
frist_response_test.go:28: Before: 2
frist_response_test.go:29: The result is from 0
frist_response_test.go:31: After: 2
PASS
Process finished with exit code 0
现在在看输出结果，执行前和执行后的协程数量是一样的
更多学习笔记和示例代码请访问：github.com/wenjianzhan…
也请大家分享一些自己的问题和经验，共同学习进步
