XCEngine/docs/api/threading/read-write-lock/readunlock.md

# ReadWriteLock::ReadUnlock

```cpp
void ReadUnlock()
```

释放读锁。如果这是最后一个读者，将唤醒等待中的写者。

**参数：** 无

**返回：** 无

**线程安全：** ✅

**复杂度：** O(1)

**注意：** 必须与 ReadLock 配对使用，且在持有读锁的线程中调用。

**示例：**

```cpp
#include "XCEngine/Threading/ReadWriteLock.h"

XCEngine::Threading::ReadWriteLock rwLock;
float sharedData = 0.0f;

float GetData() {
    rwLock.ReadLock();
    float data = sharedData;
    rwLock.ReadUnlock();
    return data;
}
```

## 相关文档

- [`ReadWriteLock`](read-write-lock.md) - 返回类总览
- [`ReadLock`](readlock.md) - 获取读锁