diff options
Diffstat (limited to 'lib/bitmap.h')
-rw-r--r-- | lib/bitmap.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/lib/bitmap.h b/lib/bitmap.h index 5b50c9cc4..fd05d3da1 100644 --- a/lib/bitmap.h +++ b/lib/bitmap.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008, 2009 Nicira Networks. + * Copyright (c) 2008, 2009, 2010 Nicira Networks. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -35,11 +35,22 @@ 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)); } static inline void |