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-rw-r--r--ChangeLog6
-rw-r--r--lib/nproc.c14
2 files changed, 20 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 5a820cd30d..fbd6694e7c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
2009-10-18 Bruno Haible <bruno@clisp.org>
+ Implement nproc for mingw.
+ * lib/nproc.c: Include <windows.h>
+ (num_processors): On native Windows platforms, try GetSystemInfo.
+
+2009-10-18 Bruno Haible <bruno@clisp.org>
+
Implement nproc for IRIX.
* lib/nproc.c: Include <sys/sysmp.h>.
(num_processors): On IRIX systems, try sysmp.
diff --git a/lib/nproc.c b/lib/nproc.c
index 04a047cfb4..b5a70b193a 100644
--- a/lib/nproc.c
+++ b/lib/nproc.c
@@ -41,6 +41,11 @@
# include <sys/sysctl.h>
#endif
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+#endif
+
#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
/* Return the total number of processors. The result is guaranteed to
@@ -90,5 +95,14 @@ num_processors (void)
}
#endif
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+ { /* This works on native Windows platforms. */
+ SYSTEM_INFO system_info;
+ GetSystemInfo (&system_info);
+ if (0 < system_info.dwNumberOfProcessors)
+ return system_info.dwNumberOfProcessors;
+ }
+#endif
+
return 1;
}