44 lines
827 B
Markdown
44 lines
827 B
Markdown
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# Mutex::lock
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```cpp
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void lock() const;
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```
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获取互斥锁（const 版本）。如果锁已被其他线程持有，则阻塞当前线程直到锁可用。
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该方法是 `std::lockable` 接口的实现，可与 `std::lock_guard`、`std::unique_lock` 等 RAII 工具配合使用。
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**参数：** 无
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**返回：** 无
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**线程安全：** ✅
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**复杂度：** 平均 O(1)，最坏情况 O(n)，n 为竞争线程数
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**示例：**
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```cpp
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#include "XCEngine/Threading/Mutex.h"
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#include <mutex>
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XCEngine::XCEngine::Threading::Mutex mtx;
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int counter = 0;
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void Increment() {
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mtx.lock();
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++counter;
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mtx.unlock();
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}
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// 使用 RAII 自动管理锁
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void SafeIncrement() {
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std::lock_guard<XCEngine::Threading::Mutex> guard(mtx);
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++counter;
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}
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```
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## 相关文档
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- [Mutex 总览](mutex.md) - 返回类总览
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