Hi everyone. After spending some time getting familiar with Java at my job, I decided to write a C++ class similar to Thread in Java where all the user has to do is override run() and call start(). The class uses pthreads behind the scenes.

I have used pthreads on Linux before while doing some computer graphics work and was used to using pthread_yield(). However, I originally started working on my thread class on my Mac which, as I'm sure everyone probably knows, is partially BSD-based. In the version of pthread included with OS X.4, there is no pthread_yield() but there is a pthread_yield_np(). I used it and it works on OS X but obviously won't compile on my Linux machine, which has a version of pthread with pthread_yield() but not pthread_yield_np().

So, my question is what are the differences between pthread_yield() and pthread_yield_np()? And more importantly, does anyone know of a way to get the code to compile on either system? I looked through pthread.h for something that might allow a simple #ifdef solution but didn't find anything. Any ideas?

-Brandon

There is a major difference between pthread_yield and *_np, the following is from man pages.

preprocessor defines are the way to go, have a look at.
http://predef.sourceforge.net/preos.html#sec17