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

# ReadWriteLock::WriteUnlock

```cpp
void WriteUnlock()
```

释放写锁。唤醒所有等待中的读者和下一个写者。

**参数：** 无

**返回：** 无

**线程安全：** ✅

**复杂度：** O(1)

**注意：** 必须在持有写锁的线程中调用。

**示例：**

```cpp
#include "XCEngine/Threading/ReadWriteLock.h"
#include <unordered_map>
#include <string>

XCEngine::Threading::ReadWriteLock rwLock;
std::unordered_map<std::string, int> cache;

void UpdateCache(const std::string& key, int value) {
    rwLock.WriteLock();
    cache[key] = value;
    rwLock.WriteUnlock();
}
```

## 相关文档

- [`ReadWriteLock`](read-write-lock.md) - 返回类总览
- [`WriteLock`](writelock.md) - 获取写锁