31 lines
654 B
Markdown
31 lines
654 B
Markdown
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# Thread::GetId
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```cpp
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Id GetId() const
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```
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获取当前线程对象的唯一标识符。该 ID 在线程启动后有效。
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**参数：** 无
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**返回：** `Thread::Id` - 线程的唯一标识符（uint64_t 类型）
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**复杂度：** O(1)
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**注意：** 在调用 Start 之前返回 0。
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**示例：**
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```cpp
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Thread worker;
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printf("Before start: id=%llu\n", (unsigned long long)worker.GetId());
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worker.Start([]() {}, "Test");
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printf("After start: id=%llu\n", (unsigned long long)worker.GetId());
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worker.Join();
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```
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## 相关文档
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- [Thread 总览](thread.md) - 返回类总览
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- [GetCurrentId](getcurrentid.md) - 获取当前执行线程的 ID
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