On Tue May 12, 2015 at 11:08:21 +0800, watermirror wrote: > in the method Thread::do_ipc, there's a parameter named 'partner'.what is the 'partner' used for? IPC is done between two threads, and the two are the current thread (this) and 'partner'. Adam -- Adam adam at os.inf.tu-dresden.de Lackorzynski http://os.inf.tu-dresden.de/~adam/