On 1 November 2011 16:01, Jonathan Wakely wrote: > On 1 November 2011 15:57, niXman wrote: >>> What header is required for pthread_num_processors_np? >> pthread.h > > OK. > > This assumes that Pthreads is the only abstraction available on __hpux > (i.e. that if _GLIBCXX_HAS_GTHREADS is true then we have already > included <pthread.h>): > > +#if defined(PTW32_VERSION) || \ > + (defined(__MINGW64_VERSION_MAJOR) && defined(_POSIX_THREADS)) || \ > + defined(__hpux) > > Is that assumption safe?
OK, gthr-dec.h includes <pthread.h> so I think it is safe. Do all supported versions of Pthreads-win32, mingw64 and HPUX define pthread_num_processors_np() in <pthread.h>? They might not, which is why there should be a configure test checking for the availability of that function, which sets a macro such as _GLIBCXX_USE_PTHREAD_NUM_PROCESSORS_NP, which is then checked in src/thread.cc
