include: Add bitmap implementation

This adds a bitmap implementation loosely based on the one found in
the Linux kernel. The functions in the header file actually act as a
wrapper around the actual bitmap implementation for portability
reasons.

1 files changed, 41 insertions, 0 deletions

diff --git a/include/ouroboros/bitmap.h b/include/ouroboros/bitmap.h
new file mode 100644
index 00000000..6296e2e0
--- /dev/null
+++ b/include/ouroboros/bitmap.h
@@ -0,0 +1,41 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * RINA bitmap implementation - wraps around bitmap from Linux kernel
+ *
+ *    Sander Vrijders <[email protected]>
+ *    Francesco Salvestrini <[email protected]>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef OUROBOROS_BITMAP_H
+#define OUROBOROS_BITMAP_H
+
+#include <stddef.h>
+#include <unistd.h>
+#include <stdbool.h>
+
+struct rbmp;
+
+struct rbmp * rbmp_create(size_t bits, ssize_t offset);
+int           rbmp_destroy(struct rbmp * b);
+
+ssize_t       rbmp_allocate(struct rbmp * instance);
+int           rbmp_release(struct rbmp * instance,
+                           ssize_t       id);
+bool          rbmp_is_id_ok(struct rbmp * b, ssize_t id);
+
+#endif