36 lines
694 B
Markdown
36 lines
694 B
Markdown
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# RHIFence::IsSignaled
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```cpp
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virtual bool IsSignaled() const = 0;
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```
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检查围栏是否已发出信号。如果返回 `true`，表示围栏的当前值已达到或超过其初始信号值。
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**参数：** 无
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**返回：** 如果围栏已发出信号返回 `true`，否则返回 `false`
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**线程安全**：✅
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**复杂度**：O(1)
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**示例**：
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```cpp
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RHIFence* fence = device->CreateFence();
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fence->Signal();
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// 非阻塞检查围栏状态
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while (!fence->IsSignaled()) {
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// 执行其他任务或短暂等待
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std::this_thread::sleep_for(std::chrono::milliseconds(1));
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}
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// 围栏已发出信号，继续处理
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```
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## 相关文档
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- [RHIFence](fence.md) - 返回类总览
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