在Windows上，使用.NET可以利用FileSystemWatcher进行文件系统监控；使用C语言则可以借助FindFirstChangeNotification和ReadDirectoryChangesW。虽然这些API在Mac OS中与fsevents有所不同，并且在某些边缘情况下可靠性有限，但它们通常与周期性扫描结合使用以弥补推送API可能丢失或不完整的信息。推荐的第三方工具包括jnotify和MS的FileMon。
If you're using .net, use FileSystemWatcher. More info here: http://msdn.microsoft.com/en-us/library/system.io.filesystemwatcher.aspx
If you're using C, use FindFirstChangeNotification, FindNextChangeNotification, ReadDirectoryChangesW. More info here: http://msdn.microsoft.com/en-us/library/aa365261(VS.85).aspx
On OSX, the relevant api is the fsevents api.
They're all subtly different from one another, and they all have questionable reliability in edge cases. In general, you can't depend on these apis for a complete view of all changes 100% of the time. Most people using file system monitoring combine it with periodic scans to compensate for lost or incomplete information from the push api.
http://jnotify.sourceforge.net/
or
this one from MS:
FileMon
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