1 files changed, 84 insertions, 0 deletions
diff --git a/common/refarray/ref_array.h b/common/refarray/ref_array.h
new file mode 100644
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--- /dev/null
+++ b/common/refarray/ref_array.h
@@ -0,0 +1,84 @@
+/*
+    REF ARRAY
+
+    Header file for of the dynamic array with reference count.
+
+    Copyright (C) Dmitri Pal <dpal@redhat.com> 2009
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+    This program 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 General Public License for more details.
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef REF_ARRAY_H
+#define REF_ARRAY_H
+
+#include <stdint.h>
+#include <stdlib.h>
+
+struct ref_array;
+
+#ifndef EOK
+#define EOK 0
+#endif
+
+/*************************************/
+/* Interface to the referenced array */
+/*************************************/
+
+typedef enum
+{
+    REF_ARRAY_DESTROY,
+    REF_ARRAY_DELETE,
+} ref_array_del_enum;
+
+/* Callback that can be provided by caller
+ * to free data when the storage is actually destroyed
+ */
+typedef void (*ref_array_fn)(void *elem,
+                             ref_array_del_enum type,
+                             void *data);
+
+
+/* Create referenced array */
+int ref_array_create(struct ref_array **ra,
+                     size_t elem,
+                     uint32_t grow_by,
+                     ref_array_fn cb,
+                     void *data);
+
+/* Get new reference to an array */
+struct ref_array *ref_array_getref(struct ref_array *ra);
+
+/* Delete the array */
+void ref_array_destroy(struct ref_array *ra);
+
+/* Add new element to the array */
+int ref_array_append(struct ref_array *ra, void *element);
+
+/* Get element */
+void *ref_array_get(struct ref_array *ra, uint32_t idx, void *acptr);
+
+/* Get array length */
+int ref_array_getlen(struct ref_array *ra, uint32_t *len);
+
+/* Alternative function to get length.
+ * Returns 0 if the array is invalid
+ */
+uint32_t ref_array_len(struct ref_array *ra);
+
+
+/* In future in might make sense to add entry points
+ * to insert and delete elements from the array.
+ * Current use cases do not require this kind of
+ * functionality so it is left out of the implementation
+ */
+
+#endif