A WaitGroup waits for a collection of goroutines to finish. The main goroutine calls Add to set the number of goroutines to wait for. Then each of the goroutines runs and calls Done when finished. At the same time, Wait can be used to block until all goroutines have finished. 大意为...
A WaitGroup waits for a collection of goroutines to finish. The main goroutine calls Add to set the number of goroutines to wait for. Then each of the goroutines runs and calls Done when finished. At the same time, Wait can be used to block until all goroutines have finished. A Wait...
A WaitGroup waits for a collection of goroutines to finish. The main goroutine calls Add to set the number of goroutines to wait for. Then each of the goroutines runs and calls Done when finished. At the same time, Wait can be used to block until all goroutines have finished. 1. 大...
package sync import ( "internal/race" "sync/atomic" "unsafe" ) // A WaitGroup waits for a collection of goroutines to finish. WaitGroup等待一组goroutine完成。 // The main goroutine calls Add to set the number of goroutine通过调用 Add(),增加等待的goroutines的数量。 // goroutines to w...
1.使用解释 WaitGroup的用途:它能够一直等到所有的goroutine执行完成,并且阻塞主线程的执行,直到所有的goroutine执行完成。 官方对它的说明如下: A WaitGroup waits for a collection of goroutines to finish. The
A WaitGroup waits for a collection of goroutines to finish. The main goroutine calls Add to set the number of goroutines to wait for. Then each of the goroutines runs and calls Done when finished. At the same time, Wait can be used to block until all goroutines have finished. 1 2...
// A WaitGroup waits for a collection of goroutines to finish. // The main goroutine calls Add to set the number of // goroutines to wait for. Then each of the goroutines // runs and calls Done when finished. At the same time, ...
通过Add增加等待的任务数,通过Done表示任务完成,Wait阻塞当前 Goroutine 直到所有任务完成。 缺点: 只能用于同步“任务完成”,不能用于同步临界区的访问。 WaitGroup源码如下: // A WaitGroup waits for a collection of goroutines to finish.// The main goroutine calls Add to set the number of// goroutines...
// A WaitGroup waits for a collection of goroutines to finish.// The main goroutine calls Add to set the number of// goroutines to wait for. Then each of the goroutines// runs and calls Done when finished. At the same time,// Wait can be used to block until all goroutines have...
var(counterintmutex sync.Mutex)funcincrement(){mutex.Lock()defermutex.Unlock()counter++}funcmain(){fori:=0;i<1000;i++{goincrement()}// wait for all goroutines to finishtime.Sleep(time.Second)fmt.Println(counter)// Output: 1000}