Import guile-1.8 as multiple upstream tarball component

[lilypond.git] / guile18 / libguile / null-threads.c

diff --git a/guile18/libguile/null-threads.c b/guile18/libguile/null-threads.c
new file mode 100644 (file)
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+++ b/guile18/libguile/null-threads.c
@@ -0,0 +1,72 @@
+/* Copyright (C) 2002, 2006, 2008 Free Software Foundation, Inc.
+ * 
+ * This library 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.
+ *
+ * This library 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 more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+#include "libguile/_scm.h"
+
+#if SCM_USE_NULL_THREADS
+
+#include "libguile/null-threads.h"
+
+static scm_i_pthread_key_t *all_keys = NULL;
+
+static void
+destroy_keys (void)
+{
+  scm_i_pthread_key_t *key;
+  int again;
+
+  do {
+    again = 0;
+    for (key = all_keys; key; key = key->next)
+      if (key->value && key->destr_func)
+       {
+         void *v = key->value;
+         key->value = NULL;
+         key->destr_func (v);
+         again = 1;
+       }
+  } while (again);
+}
+
+int
+scm_i_pthread_key_create (scm_i_pthread_key_t *key,
+                         void (*destr_func) (void *))
+{
+  if (all_keys == NULL)
+    atexit (destroy_keys);
+
+  key->next = all_keys;
+  all_keys = key;
+  key->value = NULL;
+  key->destr_func = destr_func;
+
+  return 0;
+}
+
+#endif /* SCM_USE_NULL_THREADS */
+
+
+/*
+  Local Variables:
+  c-file-style: "gnu"
+  End:
+*/