From 4ac7a89ec44f465a12154d2ff695684eccf3bb77 Mon Sep 17 00:00:00 2001
From: asterix <asterix@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Fri, 13 Aug 2010 14:00:03 +0000
Subject: [PATCH] Add first implementation of bit array module.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@4188 38d2e660-2303-0410-9eaa-f027e97ec537
---
 bertos/struct/bitarray.h      | 92 +++++++++++++++++++++++++++++++++++
 bertos/struct/bitarray_test.c | 64 ++++++++++++++++++++++++
 2 files changed, 156 insertions(+)
 create mode 100644 bertos/struct/bitarray.h
 create mode 100644 bertos/struct/bitarray_test.c

diff --git a/bertos/struct/bitarray.h b/bertos/struct/bitarray.h
new file mode 100644
index 00000000..3602d8a6
--- /dev/null
+++ b/bertos/struct/bitarray.h
@@ -0,0 +1,92 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
+ * -->
+ *
+ * \brief Bitarray module
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ *
+ * $WIZ$ module_name = "bitarray"
+ */
+
+#ifndef STRUCT_BITARRAY_H
+#define STRUCT_BITARRAY_H
+
+#include <cfg/compiler.h>
+#include <cfg/macros.h>
+#include <cfg/debug.h>
+
+#include <cpu/types.h>
+
+typedef struct BitArray
+{
+	size_t size;
+	uint8_t *array;
+
+} BitArray;
+
+
+#define ALLOC_BITARRAY(name, size)   uint8_t name[DIV_ROUNDUP((size),8)]
+
+
+INLINE void bitarray_set(BitArray *ctx, int idx)
+{
+	ASSERT((size_t)idx <= ctx->size);
+	int page = idx / 8;
+	int bit = idx % 8;
+
+	ctx->array[page] |= BV(bit);
+}
+
+INLINE void bitarray_clear(BitArray *ctx, int idx)
+{
+	ASSERT((size_t)idx <= ctx->size);
+	int page = idx / 8;
+	int bit = idx % 8;
+
+	ctx->array[page] &= ~BV(bit);
+}
+
+INLINE bool bitarray_check(BitArray *ctx, int idx)
+{
+	ASSERT((size_t)idx <= ctx->size);
+	int page = idx / 8;
+	int bit = idx % 8;
+
+	return (ctx->array[page] & BV(bit));
+}
+
+INLINE void init_bitarray(BitArray *ctx, uint8_t *array, size_t size)
+{
+	ctx->size = size;
+	ctx->array = array;
+}
+
+#endif /* STRUCT_BITARRAY_H */
diff --git a/bertos/struct/bitarray_test.c b/bertos/struct/bitarray_test.c
new file mode 100644
index 00000000..fa65c44a
--- /dev/null
+++ b/bertos/struct/bitarray_test.c
@@ -0,0 +1,64 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief Bitarray test
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#include <struct/bitarray.h>
+
+#include <cfg/compiler.h>
+#include <cfg/test.h>
+#include <cfg/debug.h>
+
+ALLOC_BITARRAY(test1, 128);
+BitArray ctx;
+
+int bitarray_testSetup(void)
+{
+	kdbg_init();
+	init_bitarray(&ctx, test1, sizeof(test1));
+	return 0;
+}
+
+int bitarray_testRun(void)
+{
+	return 0;
+}
+
+int bitarray_testTearDown(void)
+{
+	return 0;
+}
+
+TEST_MAIN(bitarray);
-- 
2.25.1