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This article mainly explains the principle and use of sync.Mutex mutex. The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn the principle and use of sync.Mutex mutex.

Description:

Mutexes are used to ensure that only one routine can access an object at any one time. The initial value of Mutex is unlocked. Mutex is typically used as an anonymous field for other structures, giving the structure Lock and Unlock methods. Mutex can be safely used in parallel in multiple routines.

Interpretation of sync.Mutex source code

The / / Locker interface wraps the basic Lock and UnLock methods for locking and unlocking. Type Locker interface {Lock () Unlock ()} / / Lock is used to lock m, and if m is already locked, Lock will be blocked until m is unlocked. Func (m * Mutex) Lock () / / Unlock is used to unlock m, which throws a panic if m is not locked. Func (m * Mutex) Unlock ()

Demo

Package mainimport ("fmt"sync"time") type Work struct {sync.Mutex} func main () {work: = Work {} done: = make (chan int) for I: = 0; I < 10 Work.Lock + {go func (I int) {work.Lock () defer work.Unlock () time.Sleep (1 * time.Second) done

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