[libvirt] [PATCH v3 1/9] bitmap: add a new member variable map_len

[Hu Tao]

Add a new member variable map_len to store map len of bitmap.
and rename size to max_bit accordingly.
---
 src/util/bitmap.c |   24 ++++++++++--------------
 1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/src/util/bitmap.c b/src/util/bitmap.c
index cd52802..434c443 100644
--- a/src/util/bitmap.c
+++ b/src/util/bitmap.c
@@ -36,7 +36,8 @@
 
 
 struct _virBitmap {
-    size_t size;
+    size_t max_bit;
+    size_t map_len;
     unsigned long *map;
 };
 
@@ -75,7 +76,8 @@ virBitmapPtr virBitmapAlloc(size_t size)
         return NULL;
     }
 
-    bitmap->size = size;
+    bitmap->max_bit = size;
+    bitmap->map_len = sz;
     return bitmap;
 }
 
@@ -96,17 +98,12 @@ void virBitmapFree(virBitmapPtr bitmap)
 
 int virBitmapCopy(virBitmapPtr dst, virBitmapPtr src)
 {
-    size_t sz;
-
-    if (dst->size != src->size) {
+    if (dst->max_bit != src->max_bit) {
         errno = EINVAL;
         return -1;
     }
 
-    sz = (src->size + VIR_BITMAP_BITS_PER_UNIT - 1) /
-        VIR_BITMAP_BITS_PER_UNIT;
-
-    memcpy(dst->map, src->map, sz * sizeof(src->map[0]));
+    memcpy(dst->map, src->map, src->map_len * sizeof(src->map[0]));
 
     return 0;
 }
@@ -123,7 +120,7 @@ int virBitmapCopy(virBitmapPtr dst, virBitmapPtr src)
  */
 int virBitmapSetBit(virBitmapPtr bitmap, size_t b)
 {
-    if (bitmap->size <= b)
+    if (bitmap->max_bit <= b)
         return -1;
 
     bitmap->map[VIR_BITMAP_UNIT_OFFSET(b)] |= VIR_BITMAP_BIT(b);
@@ -141,7 +138,7 @@ int virBitmapSetBit(virBitmapPtr bitmap, size_t b)
  */
 int virBitmapClearBit(virBitmapPtr bitmap, size_t b)
 {
-    if (bitmap->size <= b)
+    if (bitmap->max_bit <= b)
         return -1;
 
     bitmap->map[VIR_BITMAP_UNIT_OFFSET(b)] &= ~VIR_BITMAP_BIT(b);
@@ -161,7 +158,7 @@ int virBitmapClearBit(virBitmapPtr bitmap, size_t b)
  */
 int virBitmapGetBit(virBitmapPtr bitmap, size_t b, bool *result)
 {
-    if (bitmap->size <= b)
+    if (bitmap->max_bit <= b)
         return -1;
 
     *result = !!(bitmap->map[VIR_BITMAP_UNIT_OFFSET(b)] & VIR_BITMAP_BIT(b));
@@ -183,8 +180,7 @@ char *virBitmapString(virBitmapPtr bitmap)
 
     virBufferAddLit(&buf, "0x");
 
-    sz = (bitmap->size + VIR_BITMAP_BITS_PER_UNIT - 1) /
-          VIR_BITMAP_BITS_PER_UNIT;
+    sz = bitmap->map_len;
 
     while (sz--) {
         virBufferAsprintf(&buf, "%0*lx",
-- 
1.7.10.2