Files
XCEngine/docs/api/threading/mutex/trylock.md

37 lines
761 B
Markdown
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
# Mutex::TryLock
```cpp
bool TryLock()
```
尝试获取互斥锁(非阻塞)。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。
**参数:**
**返回:** `bool` - 获取成功返回 true锁不可用返回 false
**复杂度:** O(1)
**使用场景:** 适用于需要尝试获取锁但不希望阻塞的场景,如实现无锁算法或避免死锁。
**示例:**
```cpp
XCEngine::Threading::Mutex mtx;
volatile bool updated = false;
void TryUpdate() {
if (mtx.TryLock()) {
updated = true;
mtx.Unlock();
printf("Update succeeded\n");
} else {
printf("Update skipped (lock held)\n");
}
}
```
## 相关文档
- [Mutex 总览](mutex.md) - 返回类总览