锁

• 互斥锁

  func main() {
      var mutex sync.Mutex
      count := 0
  
      for r := 0; r < 50; r++ {
         go func() {
                 mutex.Lock()
                 count += 1
                 mutex.Unlock()
             }()
         }
  
         time.Sleep(time.Second)
         fmt.Println("the count is : ", count)
      }
  

• 读写锁

  1. func (rw *RWMutex) Lock()
  2. func (rw *RWMutex) RLock()
  3. func (rw *RWMutex) RLocker() Locker
  4. func (rw *RWMutex) RUnlock()
  5. func (rw *RWMutex) Unlock()