On Wed, May 16, 2001 at 05:02:07PM +0530, Aneesh Kumar K.V wrote: > Hi , > > Is there a common method for porting pthread application? I mean is > there a dummy pthread.h file which contain set of macros that will map > all sort of pthread functions( atleast mutex functions) to the one > available on hurd ?
cthreads is currently the only threading library that works on the hurd. The reason we can't simply provide easy cthreads->pthreads mapping is because pthreads provides so many more functions. In general, if your application relies on: o mutex locks o spin locks o thread creation o thread_self you can port to cthreads without any problems. However, none of the specs that I've read handle any sort of per-thread signal masking, or a number of the ideas that pthreads offers. I just got (After 3 months of looking) the Oreilly & Ass. pthreads programming book. I'm hoping that it will be a good enough reference that I write a simple shim to provide those functions and #error out on any calls that aren't easily supported. My idea is that with a simple pthreads->cthreads shim, we can then port the underlying Hurd servers to pthreads, and not have to worry about the complications of running two different threading systems (mentioned by Roland a month or so ago). Tks, Jeff Bailey
