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XCEngine/docs/api/threading/readwritelock/readunlock.md

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# 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:**
**返回:**
**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`](readwritelock.md) - 返回类总览
- [`ReadLock`](readlock.md) - 获取读锁