From 97c4b27494addf0231724ca8339e818511256dcf Mon Sep 17 00:00:00 2001 From: Austin Seipp Date: Wed, 18 Mar 2009 02:31:27 +0000 Subject: [PATCH] FIX getNumberOfProcessors() on MacOS X This checks if darwin_HOST_OS is defined and, if so, we call sysctlbyname() on the "hw.ncpu" property to get the processor count. --- rts/posix/OSThreads.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/rts/posix/OSThreads.c b/rts/posix/OSThreads.c index 84b111f..d4d4382 100644 --- a/rts/posix/OSThreads.c +++ b/rts/posix/OSThreads.c @@ -23,6 +23,11 @@ #include #endif +#if defined(darwin_HOST_OS) +#include +#include +#endif + #if !defined(HAVE_PTHREAD_H) #error pthreads.h is required for the threaded RTS on Posix platforms #endif @@ -196,12 +201,16 @@ nat getNumberOfProcessors (void) { static nat nproc = 0; + size_t size = sizeof(nat); if (nproc == 0) { #if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN) nproc = sysconf(_SC_NPROCESSORS_ONLN); #elif defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_CONF) nproc = sysconf(_SC_NPROCESSORS_CONF); +#elif defined(darwin_HOST_OS) + if(0 != sysctlbyname("hw.ncpu",&nproc,&size,NULL,0)) + nproc = 1; #else nproc = 1; #endif -- 1.7.10.4