30 lines
283 B
Go
30 lines
283 B
Go
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package main
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import (
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"fmt"
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"sync"
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)
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// 互斥锁
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var x = 0
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var wg sync.WaitGroup
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var lock sync.Mutex
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func add() {
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for i := 0; i < 5000; i++ {
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lock.Lock()
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x = x + 1
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lock.Unlock()
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}
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wg.Done()
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}
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func main() {
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wg.Add(2)
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go add()
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go add()
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wg.Wait()
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fmt.Println(x)
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}
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