This makes a deep copy of an HBitmap.
Signed-off-by: Fam Zheng <[email protected]>
---
include/qemu/hbitmap.h | 8 ++++++++
util/hbitmap.c | 13 +++++++++++++
2 files changed, 21 insertions(+)
diff --git a/include/qemu/hbitmap.h b/include/qemu/hbitmap.h
index 550d7ce..b645cfc 100644
--- a/include/qemu/hbitmap.h
+++ b/include/qemu/hbitmap.h
@@ -65,6 +65,14 @@ struct HBitmapIter {
HBitmap *hbitmap_alloc(uint64_t size, int granularity);
/**
+ * hbitmap_copy:
+ * @bitmap: The original bitmap to copy.
+ *
+ * Copy a HBitmap.
+ */
+HBitmap *hbitmap_copy(const HBitmap *bitmap);
+
+/**
* hbitmap_empty:
* @hb: HBitmap to operate on.
*
diff --git a/util/hbitmap.c b/util/hbitmap.c
index d936831..cf670c7 100644
--- a/util/hbitmap.c
+++ b/util/hbitmap.c
@@ -400,3 +400,16 @@ HBitmap *hbitmap_alloc(uint64_t size, int granularity)
hb->levels[0][0] |= 1UL << (BITS_PER_LONG - 1);
return hb;
}
+
+HBitmap *hbitmap_copy(const HBitmap *bitmap)
+{
+ int i;
+ HBitmap *hb = g_memdup(bitmap, sizeof(struct HBitmap));
+
+ for (i = HBITMAP_LEVELS; i-- > 0; ) {
+ hb->levels[i] = g_memdup(bitmap->levels[i],
+ bitmap->size * sizeof(unsigned long));
+ }
+
+ return hb;
+}
--
1.9.0
