On Mon, 11 Jul 2011 20:59:29 -0700 (PDT) Fan <zjuwu...@gmail.com> wrote:
> It seems that waitpid take process handle instead of process id as the > first parameter on Windows. On Unices platform, the first parameter > is process id. > > This interface is a little bit confusing. What's the purpose for such > a design? > > Thanks a lot, > Fan I would assume it's because that's how the underlying OS primitives work. Under Windows, concepts of "process ID" and "process handle" both exist (and are separate), and the functions that wait for events to occur (WaitForSingleObject, WaitForMultipleObjects, and so on) take handles of various sorts, including process handles. Under Linux, there is no such thing as a process handle, only a process ID, and waitpid (the system call) takes a process ID. Chris -- http://mail.python.org/mailman/listinfo/python-list
