RTS tidyup sweep, first phase

[ghc-hetmet.git] / rts / posix / OSThreads.c

diff --git a/rts/posix/OSThreads.c b/rts/posix/OSThreads.c
index 84b111f..a813eeb 100644 (file)
--- a/rts/posix/OSThreads.c
+++ b/rts/posix/OSThreads.c
@@ -13,9 +13,10 @@
 #define _GNU_SOURCE
 #endif
 
+#include "PosixSource.h"
 #include "Rts.h"
+
 #if defined(THREADED_RTS)
-#include "OSThreads.h"
 #include "RtsUtils.h"
 #include "Task.h"
 
@@ -23,6 +24,11 @@
 #include <string.h>
 #endif
 
+#if defined(darwin_HOST_OS)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
 #if !defined(HAVE_PTHREAD_H)
 #error pthreads.h is required for the threaded RTS on Posix platforms
 #endif
@@ -202,6 +208,10 @@ getNumberOfProcessors (void)
         nproc = sysconf(_SC_NPROCESSORS_ONLN);
 #elif defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_CONF)
         nproc = sysconf(_SC_NPROCESSORS_CONF);
+#elif defined(darwin_HOST_OS)
+        size_t size = sizeof(nat);
+        if(0 != sysctlbyname("hw.ncpu",&nproc,&size,NULL,0))
+            nproc = 1;
 #else
         nproc = 1;
 #endif