40 lines
860 B
Markdown
40 lines
860 B
Markdown
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# TaskGroup::WaitFor
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```cpp
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bool WaitFor(std::chrono::milliseconds timeout)
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```
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等待任务组中所有任务完成，可在超时后返回。
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**参数：**
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- `timeout` - 最大等待时间
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**返回：** `bool` - 所有任务在超时前完成返回 true，超时返回 false
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**复杂度：** O(n)
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**示例：**
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```cpp
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TaskGroup* group = TaskSystem::Get().CreateTaskGroup();
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for (int i = 0; i < 5; ++i) {
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group->AddTask([i]() {
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Thread::Sleep(i * 100);
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printf("Task %d done\n", i);
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});
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}
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if (group->WaitFor(std::chrono::seconds(1))) {
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printf("All tasks completed within 1 second\n");
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} else {
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printf("Timeout! Some tasks still running\n");
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printf("Progress: %.1f%%\n", group->GetProgress() * 100.0f);
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}
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```
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## 相关文档
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- [TaskGroup 总览](task-group.md) - 返回类总览
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- [Wait](wait.md) - 无超时等待
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