X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fbitmap.h;h=89804962323572d4d1be8fb450fd9ff8cdda0624;hb=aabf5352bbf7e6fdc3d8da9f7f0b2e268da6ea68;hp=5b50c9cc4987aa3e840d62550e303888ce7770ba;hpb=02dd3123a0e312f1d33403e744af52dd6096f12d;p=openvswitch

diff --git a/lib/bitmap.h b/lib/bitmap.h
index 5b50c9cc..89804962 100644
--- a/lib/bitmap.h
+++ b/lib/bitmap.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@
 static inline unsigned long *
 bitmap_unit__(const unsigned long *bitmap, size_t offset)
 {
-    return (unsigned long *) &bitmap[offset / BITMAP_ULONG_BITS];
+    return CONST_CAST(unsigned long *, &bitmap[offset / BITMAP_ULONG_BITS]);
 }
 
 static inline unsigned long
@@ -35,11 +35,30 @@ bitmap_bit__(size_t offset)
     return 1UL << (offset % BITMAP_ULONG_BITS);
 }
 
+static inline size_t
+bitmap_n_longs(size_t n_bits)
+{
+    return DIV_ROUND_UP(n_bits, BITMAP_ULONG_BITS);
+}
+
+static inline size_t
+bitmap_n_bytes(size_t n_bits)
+{
+    return bitmap_n_longs(n_bits) * sizeof(unsigned long int);
+}
+
 static inline unsigned long *
 bitmap_allocate(size_t n_bits)
 {
-    size_t n_longs = DIV_ROUND_UP(n_bits, BITMAP_ULONG_BITS);
-    return xcalloc(sizeof(unsigned long int), n_longs);
+    return xzalloc(bitmap_n_bytes(n_bits));
+}
+
+unsigned long *bitmap_allocate1(size_t n_bits);
+
+static inline unsigned long *
+bitmap_clone(const unsigned long *bitmap, size_t n_bits)
+{
+    return xmemdup(bitmap, bitmap_n_bytes(n_bits));
 }
 
 static inline void