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XCEngine/docs/api/debug/filelogsink/log.md

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# FileLogSink::Log
```cpp
void Log(const LogEntry& entry) override
```
将日志条目追加写入文件。根据 `LogEntry` 的各字段格式化日志行,包括时间戳、级别、分类、消息,并追加到文件末尾。
**参数:**
- `entry` - 日志条目
**线程安全:** ❌ 非线程安全,多线程同时调用 Log 可能导致数据竞争
**复杂度:** O(m)m 为消息长度
**示例:**
```cpp
auto fileSink = std::make_unique<XCEngine::Debug::FileLogSink>("logs/app.log");
XCEngine::Debug::Logger::Get().AddSink(std::move(fileSink));
// Log 方法由 Logger 在内部调用
XCEngine::Debug::Logger::Get().Error(XCEngine::Debug::LogCategory::FileSystem, "File not found");
```
## 相关文档
- [FileLogSink 总览](filelogsink.md) - 返回类总览