drvvepadi289421028
2014-08-03 16:06
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Golang中的并行处理

Given the following code:

package main

import (
    "fmt"
    "math/rand"
    "time"
)

func main() {
    for i := 0; i < 3; i++ {
        go f(i)
    }

    // prevent main from exiting immediately
    var input string
    fmt.Scanln(&input)
}

func f(n int) {
    for i := 0; i < 10; i++ {
        dowork(n, i)
        amt := time.Duration(rand.Intn(250))
        time.Sleep(time.Millisecond * amt)
    }
}

func dowork(goroutine, loopindex int) {
    // simulate work
    time.Sleep(time.Second * time.Duration(5))
    fmt.Printf("gr[%d]: i=%d
", goroutine, loopindex)
}

Can i assume that the 'dowork' function will be executed in parallel?

Is this a correct way of achieving parallelism or is it better to use channels and separate 'dowork' workers for each goroutine?

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