/*
- * 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.
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
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