golang读写锁，其特征在于
读锁：可以同时进行多个协程读操作，不允许写操作
写锁：只允许同时有一个协程进行写操作，不允许其他写操作和读操作
读写锁共有四个方法
RLock：获取读锁
RUnLock：释放读锁
Lock：获取写锁
UnLock：释放写锁
使用例子如下
package mainimport ( "fmt" "sync" "time")var gRWLock *sync.RWMutexvar gVar intfunc init() { gRWLock = new(sync.RWMutex) gVar = 1}func main() { var wg sync.WaitGroup go Read(1, &wg) wg.Add(1) go Write(1, &wg) wg.Add(1) go Read(2, &wg) wg.Add(1) go Read(3, &wg) wg.Add(1) wg.Wait()}func Read(id int, wg *sync.WaitGroup) { fmt.Printf("Read Coroutine: %d startn", id) defer fmt.Printf("Read Coroutine: %d endn", id) gRWLock.RLock() fmt.Printf("gVar %dn", gVar) time.Sleep(time.Second) gRWLock.RUnlock() wg.Done()}func Write(id int, wg *sync.WaitGroup) { fmt.Printf("Write Coroutine: %d startn", id) defer fmt.Printf("Write Coroutine: %d endn", id) gRWLock.Lock() gVar = gVar + 100 fmt.Printf("gVar %dn", gVar) time.Sleep(time.Second) gRWLock.Unlock() wg.Done()}以上就是关于golang读写锁的详细内容，更多请关注考高分网其它相关文章！
