42 lines
848 B
Markdown
42 lines
848 B
Markdown
# Mutex::try_lock
|
||
|
||
```cpp
|
||
bool try_lock() const;
|
||
```
|
||
|
||
尝试获取互斥锁（非阻塞，const 版本）。如果锁可用则立即获取并返回 `true`，否则立即返回 `false` 而不阻塞。
|
||
|
||
该方法是 `std::lockable` 接口的实现。
|
||
|
||
**参数：** 无
|
||
|
||
**返回：** `bool` - 获取成功返回 `true`，锁不可用返回 `false`
|
||
|
||
**线程安全：** ✅
|
||
|
||
**复杂度：** O(1)
|
||
|
||
**示例：**
|
||
|
||
```cpp
|
||
#include "XCEngine/Threading/Mutex.h"
|
||
#include <iostream>
|
||
|
||
XCEngine::XCEngine::Threading::Mutex mtx;
|
||
volatile bool updated = false;
|
||
|
||
void TryUpdate() {
|
||
if (mtx.try_lock()) {
|
||
updated = true;
|
||
mtx.unlock();
|
||
std::cout << "Update succeeded" << std::endl;
|
||
} else {
|
||
std::cout << "Update skipped (lock held)" << std::endl;
|
||
}
|
||
}
|
||
```
|
||
|
||
## 相关文档
|
||
|
||
- [Mutex 总览](mutex.md) - 返回类总览
|