Rerun tools/build to reformat

This commit is contained in:
Eli Bendersky
2019-05-30 05:40:18 -07:00
parent 95d0dd43cc
commit 3010af04fc
3 changed files with 33 additions and 34 deletions

View File

@@ -12,40 +12,40 @@ import "time"
// results on `results`. We'll sleep a second per job to
// simulate an expensive task.
func worker(id int, jobs <-chan int, results chan<- int) {
for j := range jobs {
fmt.Println("worker", id, "started job", j)
time.Sleep(time.Second)
fmt.Println("worker", id, "finished job", j)
results <- j * 2
}
for j := range jobs {
fmt.Println("worker", id, "started job", j)
time.Sleep(time.Second)
fmt.Println("worker", id, "finished job", j)
results <- j * 2
}
}
func main() {
// In order to use our pool of workers we need to send
// them work and collect their results. We make 2
// channels for this.
jobs := make(chan int, 100)
results := make(chan int, 100)
// In order to use our pool of workers we need to send
// them work and collect their results. We make 2
// channels for this.
jobs := make(chan int, 100)
results := make(chan int, 100)
// This starts up 3 workers, initially blocked
// because there are no jobs yet.
for w := 1; w <= 3; w++ {
go worker(w, jobs, results)
}
// This starts up 3 workers, initially blocked
// because there are no jobs yet.
for w := 1; w <= 3; w++ {
go worker(w, jobs, results)
}
// Here we send 5 `jobs` and then `close` that
// channel to indicate that's all the work we have.
for j := 1; j <= 5; j++ {
jobs <- j
}
close(jobs)
// Here we send 5 `jobs` and then `close` that
// channel to indicate that's all the work we have.
for j := 1; j <= 5; j++ {
jobs <- j
}
close(jobs)
// Finally we collect all the results of the work.
// This also ensures that the worker goroutines have
// finished. An alternative way to wait for multiple
// goroutines is to use a [WaitGroup](waitgroup).
for a := 1; a <= 5; a++ {
<-results
}
// Finally we collect all the results of the work.
// This also ensures that the worker goroutines have
// finished. An alternative way to wait for multiple
// goroutines is to use a [WaitGroup](waitgroup).
for a := 1; a <= 5; a++ {
<-results
}
}

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@@ -1,2 +1,2 @@
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3f7712d470dcbfc0cdddc939bb80814baaff8bb0
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