obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 80 insertions, 0 deletions

diff --git a/libgomp/config/mingw32/proc.c b/libgomp/config/mingw32/proc.c
new file mode 100644
index 000000000..03d101a59
--- /dev/null
+++ b/libgomp/config/mingw32/proc.c
@@ -0,0 +1,80 @@
+/* Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+   Contributed by Danny Smith <dannysmith@users.sourceforge.net>
+
+   This file is part of the GNU OpenMP Library (libgomp).
+
+   Libgomp is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+   more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* This file contains system specific routines related to counting
+   online processors and dynamic load balancing.  It is expected that
+   a system may well want to write special versions of each of these.
+
+   The following implementation uses win32 API routines.  */
+
+#include "libgomp.h"
+#include <windows.h>
+
+/* Count the CPU's currently available to this process.  */
+static unsigned int
+count_avail_process_cpus ()
+{
+  DWORD_PTR process_cpus;
+  DWORD_PTR system_cpus;
+
+  if (GetProcessAffinityMask (GetCurrentProcess (),
+			      &process_cpus, &system_cpus))
+    {
+      unsigned int count;
+      for (count = 0; process_cpus != 0; process_cpus >>= 1)  
+	if (process_cpus & 1)
+	  count++;
+      return count;
+    }
+  return 1;
+}
+
+/* At startup, determine the default number of threads.  It would seem
+   this should be related to the number of cpus available to the process.  */
+
+void
+gomp_init_num_threads (void)
+{
+  gomp_global_icv.nthreads_var = count_avail_process_cpus ();
+}
+
+/* When OMP_DYNAMIC is set, at thread launch determine the number of
+   threads we should spawn for this team.  FIXME:  How do we adjust for
+   load average on MS Windows?  */
+
+unsigned
+gomp_dynamic_max_threads (void)
+{
+  unsigned int n_onln = count_avail_process_cpus ();
+  unsigned int nthreads_var = gomp_icv (false)->nthreads_var;
+  return n_onln > nthreads_var ? nthreads_var : n_onln;
+}
+
+int
+omp_get_num_procs (void)
+{
+  return count_avail_process_cpus ();
+}
+
+ialias (omp_get_num_procs)