Consolidate reference counting code.

1 files changed, 46 insertions, 0 deletions

diff --git a/libdimension/refcount.c b/libdimension/refcount.c
new file mode 100644
index 0000000..66bc010
--- /dev/null
+++ b/libdimension/refcount.c
@@ -0,0 +1,46 @@
+/*************************************************************************
+ * Copyright (C) 2011 Tavian Barnes <tavianator@tavianator.com>          *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension 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 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension 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 program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+/**
+ * @file
+ * Reference counts.
+ */
+
+#include "dimension.h"
+
+dmnsn_refcount *
+dmnsn_new_refcount(void)
+{
+  dmnsn_refcount *refcount = dmnsn_malloc(sizeof(dmnsn_refcount));
+  *refcount = 0;
+  return refcount;
+}
+
+void
+dmnsn_delete_refcount(dmnsn_refcount *refcount)
+{
+  if (refcount) {
+    if (*refcount != 0) {
+      dmnsn_error("Attempt to delete non-zero reference count.");
+    }
+
+    dmnsn_free(refcount);
+  }
+}