[freenos] [freenos commit] r202 - Added BitMap::clearMap() to zero the map.
- From: codesite-noreply@xxxxxxxxxx
- To: freenos@xxxxxxxxxxxxx
- Date: Tue, 07 Jul 2009 09:19:31 +0000
Author: nieklinnenbank
Date: Tue Jul 7 02:16:05 2009
New Revision: 202
Modified:
trunk/include/BitMap.h
Log:
Added BitMap::clearMap() to zero the map.
Modified: trunk/include/BitMap.h
==============================================================================
--- trunk/include/BitMap.h (original)
+++ trunk/include/BitMap.h Tue Jul 7 02:16:05 2009
@@ -34,14 +34,14 @@
* @param cnt Number of bits.
*/
BitMap(Size cnt, u8 *newMap = ZERO)
- : count(cnt), free(cnt)
+ : count(cnt), free(cnt)
{
if (newMap)
map = newMap;
else
map = new u8[(cnt / 8) + 1];
- memset(map, 0, (cnt / 8) + 1);
+ clearMap();
}
/**
@@ -157,15 +157,40 @@
/**
* Use the given pointer as the bitmap buffer.
* @param newMap New bitmap pointer.
+ * @param newCount New number of bits. ZERO to keep the old value.
*/
- void setMap(u8 *newMap)
+ void setMap(u8 *newMap, Size newCount = ZERO)
{
+ /* Release old map. */
if (map)
delete map;
+ /* Set bits count. */
+ if (newCount)
+ count = newCount;
+
/* Reassign to the new map, and clear it. */
map = newMap;
- memset(map, 0, count);
+ clearMap();
+ }
+
+ /**
+ * Clears the given map.
+ */
+ void clearMap()
+ {
+ Size bytes = (count / 8);
+
+ /* Partial byte. */
+ if (count % 8)
+ {
+ bytes++;
+ }
+ /* Zero it. */
+ memset(map, 0, bytes);
+
+ /* Reset free count. */
+ free = count;
}
/**
Other related posts:
- » [freenos] [freenos commit] r202 - Added BitMap::clearMap() to zero the map. - codesite-noreply
