* doc/tm.texi (defmac SMALL_REGISTER_CLASSES): Remove.

[pf3gnuchains/gcc-fork.git] / libgomp / env.c

diff --git a/libgomp/env.c b/libgomp/env.c
index 50872c2..3eb51e8 100644 (file)
--- a/libgomp/env.c
+++ b/libgomp/env.c
@@ -1,29 +1,27 @@
-/* Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
+   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 Lesser General Public License as published by
-   the Free Software Foundation; either version 2.1 of the License, or
-   (at your option) any later version.
+   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 Lesser General Public License for
+   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
    more details.
 
-   You should have received a copy of the GNU Lesser General Public License
-   along with libgomp; see the file COPYING.LIB.  If not, write to the
-   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
-   MA 02110-1301, USA.  */
+   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.
 
-/* As a special exception, if you link this library with other files, some
-   of which are compiled with GCC, to produce an executable, this library
-   does not by itself cause the resulting executable to be covered by the
-   GNU General Public License.  This exception does not however invalidate
-   any other reasons why the executable file might be covered by the GNU
-   General Public License.  */
+   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 defines the OpenMP internal control variables, and arranges
    for them to be initialized from environment variables at startup.  */
@@ -148,7 +146,7 @@ parse_schedule (void)
    present and it was successfully parsed.  */
 
 static bool
-parse_unsigned_long (const char *name, unsigned long *pvalue)
+parse_unsigned_long (const char *name, unsigned long *pvalue, bool allow_zero)
 {
   char *env, *end;
   unsigned long value;
@@ -164,7 +162,7 @@ parse_unsigned_long (const char *name, unsigned long *pvalue)
 
   errno = 0;
   value = strtoul (env, &end, 10);
-  if (errno || (long) value <= 0)
+  if (errno || (long) value <= 0 - allow_zero)
     goto invalid;
 
   while (isspace ((unsigned char) *end))
@@ -207,7 +205,7 @@ parse_stacksize (const char *name, unsigned long *pvalue)
     ++end;
   if (*end != '\0')
     {
-      switch (tolower (*end))
+      switch (tolower ((unsigned char) *end))
        {
        case 'b':
          shift = 0;
@@ -276,7 +274,7 @@ parse_spincount (const char *name, unsigned long long *pvalue)
     ++end;
   if (*end != '\0')
     {
-      switch (tolower (*end))
+      switch (tolower ((unsigned char) *end))
        {
        case 'k':
          mult = 1000LL;
@@ -484,18 +482,18 @@ initialize_env (void)
   parse_schedule ();
   parse_boolean ("OMP_DYNAMIC", &gomp_global_icv.dyn_var);
   parse_boolean ("OMP_NESTED", &gomp_global_icv.nest_var);
-  parse_unsigned_long ("OMP_MAX_ACTIVE_LEVELS", &gomp_max_active_levels_var);
-  parse_unsigned_long ("OMP_THREAD_LIMIT", &gomp_thread_limit_var);
+  parse_unsigned_long ("OMP_MAX_ACTIVE_LEVELS", &gomp_max_active_levels_var,
+                      true);
+  parse_unsigned_long ("OMP_THREAD_LIMIT", &gomp_thread_limit_var, false);
   if (gomp_thread_limit_var != ULONG_MAX)
-    {
-      gomp_remaining_threads_count = gomp_thread_limit_var - 1;
+    gomp_remaining_threads_count = gomp_thread_limit_var - 1;
 #ifndef HAVE_SYNC_BUILTINS
-      gomp_mutex_init (&gomp_remaining_threads_lock);
+  gomp_mutex_init (&gomp_remaining_threads_lock);
 #endif
-    }
   gomp_init_num_threads ();
   gomp_available_cpus = gomp_global_icv.nthreads_var;
-  if (!parse_unsigned_long ("OMP_NUM_THREADS", &gomp_global_icv.nthreads_var))
+  if (!parse_unsigned_long ("OMP_NUM_THREADS", &gomp_global_icv.nthreads_var,
+                           false))
     gomp_global_icv.nthreads_var = gomp_available_cpus;
   if (parse_affinity ())
     gomp_init_affinity ();
@@ -637,7 +635,7 @@ omp_get_thread_limit (void)
 void
 omp_set_max_active_levels (int max_levels)
 {
-  if (max_levels > 0)
+  if (max_levels >= 0)
     gomp_max_active_levels_var = max_levels;
 }