Merge commit '60617d819d77a1b92ed6c557a0b49b8e9a8e97b9'

[bpt/guile.git] / libguile / eval.c

diff --git a/libguile/eval.c b/libguile/eval.c
index 3e828a1..39e66c5 100644 (file)
--- a/libguile/eval.c
+++ b/libguile/eval.c
@@ -1,5 +1,5 @@
 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,
- *   2005,2006,2007,2008,2009,2010,2011,2012,2013
+ *   2005,2006,2007,2008,2009,2010,2011,2012,2013,2014
  * Free Software Foundation, Inc.
  * 
  * This library is free software; you can redistribute it and/or
@@ -620,30 +620,37 @@ scm_apply_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM args)
   return scm_apply_0 (proc, scm_cons (arg1, scm_cons2 (arg2, arg3, args)));
 }
 
+static SCM map_var, for_each_var;
+
+static void init_map_var (void)
+{
+  map_var = scm_private_variable (scm_the_root_module (),
+                                  scm_from_latin1_symbol ("map"));
+}
+
+static void init_for_each_var (void)
+{
+  for_each_var = scm_private_variable (scm_the_root_module (),
+                                       scm_from_latin1_symbol ("for-each"));
+}
 
 SCM 
 scm_map (SCM proc, SCM arg1, SCM args)
 {
-  static SCM var = SCM_BOOL_F;
+  static scm_i_pthread_once_t once = SCM_I_PTHREAD_ONCE_INIT;
+  scm_i_pthread_once (&once, init_map_var);
 
-  if (scm_is_false (var))
-    var = scm_private_variable (scm_the_root_module (),
-                                scm_from_latin1_symbol ("map"));
-
-  return scm_apply_0 (scm_variable_ref (var),
+  return scm_apply_0 (scm_variable_ref (map_var),
                       scm_cons (proc, scm_cons (arg1, args)));
 }
 
 SCM 
 scm_for_each (SCM proc, SCM arg1, SCM args)
 {
-  static SCM var = SCM_BOOL_F;
-
-  if (scm_is_false (var))
-    var = scm_private_variable (scm_the_root_module (),
-                                scm_from_latin1_symbol ("for-each"));
+  static scm_i_pthread_once_t once = SCM_I_PTHREAD_ONCE_INIT;
+  scm_i_pthread_once (&once, init_for_each_var);
 
-  return scm_apply_0 (scm_variable_ref (var),
+  return scm_apply_0 (scm_variable_ref (for_each_var),
                       scm_cons (proc, scm_cons (arg1, args)));
 }