mutex.md

fatal error: sync: unlock of unlocked mutex

• RUnlock() 之前不存在 RLock()

    package main
    
    import (
       "sync"
    )
    
    func main() {
       var rwmutex *sync.RWMutex
       rwmutex = new(sync.RWMutex)
       rwmutex.RUnlock()
    }
  

  • 程序输出：

      fatal error: sync: RUnlock of unlocked RWMutex
    

• RUnlock() 个数多于 RLock()

    package main
    
    import (
       "sync"
    )
    
    func main() {
       var rwmutex *sync.RWMutex
       rwmutex = new(sync.RWMutex)
       rwmutex.RLock()
       rwmutex.RLock()
       rwmutex.RUnlock()
       rwmutex.RUnlock()
       rwmutex.RUnlock()
    }
  

  • 程序输出：

      fatal error: sync: RUnlock of unlocked RWMutex