* libgomp.h (gomp_cpu_affinity, gomp_cpu_affinity_len): New extern

	decls.
	(gomp_init_affinity, gomp_init_thread_affinity): New prototypes.
	* env.c (gomp_cpu_affinity, gomp_cpu_affinity_len): New variables.
	(parse_affinity): New function.
	(initialize_env): Call it and gomp_init_affinity.
	* team.c (gomp_team_start): If gomp_cpu_affinity != NULL,
	create new pthread_attr_t and call gomp_init_thread_affinity
	on it for each thread before passing the attribute to pthread_create.
	* config/linux/affinity.c: New file.
	* config/posix/affinity.c: New file.
	* configure.ac (HAVE_PTHREAD_AFFINITY_NP): New test.
	* configure: Rebuilt.
	* config.h.in: Rebuilt.
	* Makefile.am (libgomp_la_SOURCES): Add affinity.c.
	* Makefile.in: Rebuilt.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@123494 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 62 insertions, 0 deletions

diff --git a/libgomp/configure b/libgomp/configure
index 5cd8ef564bc..426c62fcf71 100755
--- a/libgomp/configure
+++ b/libgomp/configure
@@ -8851,6 +8851,68 @@ rm -f conftest.err conftest.$ac_objext \
     ;;
 esac
 
+# Check for pthread_{,attr_}[sg]etaffinity_np.
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#define _GNU_SOURCE
+   #include <pthread.h>
+int
+main ()
+{
+cpu_set_t cpuset;
+   pthread_attr_t attr;
+   pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
+   if (CPU_ISSET (0, &cpuset))
+     CPU_SET (1, &cpuset);
+   else
+     CPU_ZERO (&cpuset);
+   pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
+   pthread_attr_init (&attr);
+   pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);
+   pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_PTHREAD_AFFINITY_NP 1
+_ACEOF
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
 # At least for glibc, clock_gettime is in librt.  But don't pull that
 # in if it still doesn't give us the function we want.
 if test $ac_cv_func_clock_gettime = no; then