From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; 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.
---
libgomp/config/bsd/proc.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 114 insertions(+)
create mode 100644 libgomp/config/bsd/proc.c
(limited to 'libgomp/config/bsd')
diff --git a/libgomp/config/bsd/proc.c b/libgomp/config/bsd/proc.c
new file mode 100644
index 000000000..ec16f2c89
--- /dev/null
+++ b/libgomp/config/bsd/proc.c
@@ -0,0 +1,114 @@
+/* Copyright (C) 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
+ Contributed by Richard Henderson <rth@redhat.com>.
+
+ 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 a mix of POSIX and BSD routines. */
+
+#include "libgomp.h"
+#include <unistd.h>
+#include <stdlib.h>
+#ifdef HAVE_GETLOADAVG
+# ifdef HAVE_SYS_LOADAVG_H
+# include <sys/loadavg.h>
+# endif
+#endif
+#ifdef HAVE_SYS_SYSCTL_H
+# include <sys/sysctl.h>
+#endif
+
+static int
+get_num_procs (void)
+{
+#ifdef _SC_NPROCESSORS_ONLN
+ return sysconf (_SC_NPROCESSORS_ONLN);
+#elif defined HW_NCPU
+ int ncpus = 1;
+ size_t len = sizeof(ncpus);
+ sysctl((int[2]) {CTL_HW, HW_NCPU}, 2, &ncpus, &len, NULL, 0);
+ return ncpus;
+#else
+ return 0;
+#endif
+}
+
+/* At startup, determine the default number of threads. It would seem
+ this should be related to the number of cpus online. */
+
+void
+gomp_init_num_threads (void)
+{
+ int ncpus = get_num_procs ();
+
+ if (ncpus > 0)
+ gomp_global_icv.nthreads_var = ncpus;
+}
+
+/* When OMP_DYNAMIC is set, at thread launch determine the number of
+ threads we should spawn for this team. */
+/* ??? I have no idea what best practice for this is. Surely some
+ function of the number of processors that are *still* online and
+ the load average. Here I use the number of processors online
+ minus the 15 minute load average. */
+
+unsigned
+gomp_dynamic_max_threads (void)
+{
+ unsigned n_onln, loadavg;
+ unsigned nthreads_var = gomp_icv (false)->nthreads_var;
+
+ n_onln = get_num_procs ();
+ if (!n_onln || n_onln > nthreads_var)
+ n_onln = nthreads_var;
+
+ loadavg = 0;
+#ifdef HAVE_GETLOADAVG
+ {
+ double dloadavg[3];
+ if (getloadavg (dloadavg, 3) == 3)
+ {
+ /* Add 0.1 to get a kind of biased rounding. */
+ loadavg = dloadavg[2] + 0.1;
+ }
+ }
+#endif
+
+ if (loadavg >= n_onln)
+ return 1;
+ else
+ return n_onln - loadavg;
+}
+
+int
+omp_get_num_procs (void)
+{
+ int ncpus = get_num_procs ();
+ if (ncpus <= 0)
+ ncpus = gomp_icv (false)->nthreads_var;
+ return ncpus;
+}
+
+ialias (omp_get_num_procs)
--
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