X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fwin32%2FOSThreads.c;h=929b8171e7736e8fcd0d1deb163ac1ae5967f60b;hb=0ee0be109fd00ec629f7a2ad6a597885a0c9d5b4;hp=24fbabeaad099750f0a910274842408004541c8b;hpb=3f9e522bb0e53ce262f68424870e2bbc9135b70a;p=ghc-hetmet.git

diff --git a/rts/win32/OSThreads.c b/rts/win32/OSThreads.c
index 24fbabe..929b817 100644
--- a/rts/win32/OSThreads.c
+++ b/rts/win32/OSThreads.c
@@ -13,6 +13,7 @@
 #if defined(THREADED_RTS)
 #include "OSThreads.h"
 #include "RtsUtils.h"
+#include <windows.h>
 
 /* For reasons not yet clear, the entire contents of process.h is protected 
  * by __STRICT_ANSI__ not being defined.
@@ -231,6 +232,20 @@ forkOS_createThread ( HsStablePtr entry )
 			   (unsigned*)&pId) == 0);
 }
 
+nat
+getNumberOfProcessors (void)
+{
+    static nat nproc = 0;
+
+    if (nproc == 0) {
+        SYSTEM_INFO si;
+        GetSystemInfo(&si);
+        nproc = si.dwNumberOfProcessors;
+    }
+
+    return nproc;
+}
+
 #else /* !defined(THREADED_RTS) */
 
 int