return BITMAP_NWORDS(nbits) * sizeof(bitmap_word);
}
-static inline bitmap *bitmap_alloc(unsigned long nbits)
-{
- return malloc(bitmap_sizeof(nbits));
-}
-
static inline bitmap_word bitmap_bswap(bitmap_word w)
{
if (BITMAP_WORD_BITS == 32)
return !!(BITMAP_WORD(bitmap, n) & BITMAP_WORDBIT(n));
}
+void bitmap_zero_range(bitmap *bitmap, unsigned long n, unsigned long m);
+void bitmap_fill_range(bitmap *bitmap, unsigned long n, unsigned long m);
static inline void bitmap_zero(bitmap *bitmap, unsigned long nbits)
{
return true;
}
+unsigned long bitmap_ffs(const bitmap *bitmap,
+ unsigned long n, unsigned long m);
+
+/*
+ * Allocation functions
+ */
+static inline bitmap *bitmap_alloc(unsigned long nbits)
+{
+ return malloc(bitmap_sizeof(nbits));
+}
+
+static inline bitmap *bitmap_alloc0(unsigned long nbits)
+{
+ bitmap *bitmap;
+
+ bitmap = bitmap_alloc(nbits);
+ if (bitmap)
+ bitmap_zero(bitmap, nbits);
+ return bitmap;
+}
+
+static inline bitmap *bitmap_alloc1(unsigned long nbits)
+{
+ bitmap *bitmap;
+
+ bitmap = bitmap_alloc(nbits);
+ if (bitmap)
+ bitmap_fill(bitmap, nbits);
+ return bitmap;
+}
+
+static inline bitmap *bitmap_realloc0(bitmap *bitmap,
+ unsigned long obits, unsigned long nbits)
+{
+ bitmap = realloc(bitmap, bitmap_sizeof(nbits));
+
+ if ((nbits > obits) && bitmap)
+ bitmap_zero_range(bitmap, obits, nbits);
+
+ return bitmap;
+}
+
+static inline bitmap *bitmap_realloc1(bitmap *bitmap,
+ unsigned long obits, unsigned long nbits)
+{
+ bitmap = realloc(bitmap, bitmap_sizeof(nbits));
+
+ if ((nbits > obits) && bitmap)
+ bitmap_fill_range(bitmap, obits, nbits);
+
+ return bitmap;
+}
+
#endif /* CCAN_BITMAP_H_ */