Go语言并发例子

package main

import (
"fmt"
"runtime"
)

func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
c := make(chan bool, 10)
for i := 0; i < 10; i++ {
go Go(c, i)
}
for i := 0; i < 10; i++ {
<-c
}
}

func Go(c chan bool, index int) {
a := 1
for i := 0; i < 100; i++ {
a += i
}

fmt.Println(index, a)
c <- true
}

package main

import (
"fmt"
"runtime"
"sync"
)

func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
wg := sync.WaitGroup{}
wg.Add(10)

for i := 0; i < 10; i++ {
go Go(&wg, i)
}
wg.Wait()
}

func Go(wg *sync.WaitGroup, index int) {
a := 1
for i := 0; i < 100; i++ {
a += i
}

fmt.Println(index, a)
wg.Done()
}

package main

import (
"fmt"
)

func main() {
c := make(chan int)

go func() {
for v := range c {
fmt.Println(v)
}
}()
for {

select {
case c <- 0:
case c <- 1:
}
}

}