diff options
Diffstat (limited to 'include/qemu/bitmap.h')
| -rw-r--r-- | include/qemu/bitmap.h | 86 |
1 files changed, 48 insertions, 38 deletions
diff --git a/include/qemu/bitmap.h b/include/qemu/bitmap.h index 308bbb71e9..1babd5d812 100644 --- a/include/qemu/bitmap.h +++ b/include/qemu/bitmap.h @@ -31,7 +31,7 @@ * bitmap_andnot(dst, src1, src2, nbits) *dst = *src1 & ~(*src2) * bitmap_complement(dst, src, nbits) *dst = ~(*src) * bitmap_equal(src1, src2, nbits) Are *src1 and *src2 equal? - * bitmap_intersects(src1, src2, nbits) Do *src1 and *src2 overlap? + * bitmap_intersects(src1, src2, nbits) Do *src1 and *src2 overlap? * bitmap_empty(src, nbits) Are all bits zero in *src? * bitmap_full(src, nbits) Are all bits set in *src? * bitmap_set(dst, pos, nbits) Set specified bit area @@ -62,71 +62,71 @@ ) #define DECLARE_BITMAP(name,bits) \ - unsigned long name[BITS_TO_LONGS(bits)] + unsigned long name[BITS_TO_LONGS(bits)] #define small_nbits(nbits) \ - ((nbits) <= BITS_PER_LONG) + ((nbits) <= BITS_PER_LONG) -int slow_bitmap_empty(const unsigned long *bitmap, int bits); -int slow_bitmap_full(const unsigned long *bitmap, int bits); +int slow_bitmap_empty(const unsigned long *bitmap, long bits); +int slow_bitmap_full(const unsigned long *bitmap, long bits); int slow_bitmap_equal(const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); + const unsigned long *bitmap2, long bits); void slow_bitmap_complement(unsigned long *dst, const unsigned long *src, - int bits); + long bits); void slow_bitmap_shift_right(unsigned long *dst, - const unsigned long *src, int shift, int bits); + const unsigned long *src, int shift, long bits); void slow_bitmap_shift_left(unsigned long *dst, - const unsigned long *src, int shift, int bits); + const unsigned long *src, int shift, long bits); int slow_bitmap_and(unsigned long *dst, const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); + const unsigned long *bitmap2, long bits); void slow_bitmap_or(unsigned long *dst, const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); + const unsigned long *bitmap2, long bits); void slow_bitmap_xor(unsigned long *dst, const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); + const unsigned long *bitmap2, long bits); int slow_bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); + const unsigned long *bitmap2, long bits); int slow_bitmap_intersects(const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); + const unsigned long *bitmap2, long bits); -static inline unsigned long *bitmap_new(int nbits) +static inline unsigned long *bitmap_new(long nbits) { - int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); + long len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); return g_malloc0(len); } -static inline void bitmap_zero(unsigned long *dst, int nbits) +static inline void bitmap_zero(unsigned long *dst, long nbits) { if (small_nbits(nbits)) { *dst = 0UL; } else { - int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); + long len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); memset(dst, 0, len); } } -static inline void bitmap_fill(unsigned long *dst, int nbits) +static inline void bitmap_fill(unsigned long *dst, long nbits) { size_t nlongs = BITS_TO_LONGS(nbits); if (!small_nbits(nbits)) { - int len = (nlongs - 1) * sizeof(unsigned long); + long len = (nlongs - 1) * sizeof(unsigned long); memset(dst, 0xff, len); } dst[nlongs - 1] = BITMAP_LAST_WORD_MASK(nbits); } static inline void bitmap_copy(unsigned long *dst, const unsigned long *src, - int nbits) + long nbits) { if (small_nbits(nbits)) { *dst = *src; } else { - int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); + long len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); memcpy(dst, src, len); } } static inline int bitmap_and(unsigned long *dst, const unsigned long *src1, - const unsigned long *src2, int nbits) + const unsigned long *src2, long nbits) { if (small_nbits(nbits)) { return (*dst = *src1 & *src2) != 0; @@ -135,7 +135,7 @@ static inline int bitmap_and(unsigned long *dst, const unsigned long *src1, } static inline void bitmap_or(unsigned long *dst, const unsigned long *src1, - const unsigned long *src2, int nbits) + const unsigned long *src2, long nbits) { if (small_nbits(nbits)) { *dst = *src1 | *src2; @@ -145,7 +145,7 @@ static inline void bitmap_or(unsigned long *dst, const unsigned long *src1, } static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1, - const unsigned long *src2, int nbits) + const unsigned long *src2, long nbits) { if (small_nbits(nbits)) { *dst = *src1 ^ *src2; @@ -155,7 +155,7 @@ static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1, } static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1, - const unsigned long *src2, int nbits) + const unsigned long *src2, long nbits) { if (small_nbits(nbits)) { return (*dst = *src1 & ~(*src2)) != 0; @@ -163,8 +163,9 @@ static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1, return slow_bitmap_andnot(dst, src1, src2, nbits); } -static inline void bitmap_complement(unsigned long *dst, const unsigned long *src, - int nbits) +static inline void bitmap_complement(unsigned long *dst, + const unsigned long *src, + long nbits) { if (small_nbits(nbits)) { *dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits); @@ -174,7 +175,7 @@ static inline void bitmap_complement(unsigned long *dst, const unsigned long *sr } static inline int bitmap_equal(const unsigned long *src1, - const unsigned long *src2, int nbits) + const unsigned long *src2, long nbits) { if (small_nbits(nbits)) { return ! ((*src1 ^ *src2) & BITMAP_LAST_WORD_MASK(nbits)); @@ -183,7 +184,7 @@ static inline int bitmap_equal(const unsigned long *src1, } } -static inline int bitmap_empty(const unsigned long *src, int nbits) +static inline int bitmap_empty(const unsigned long *src, long nbits) { if (small_nbits(nbits)) { return ! (*src & BITMAP_LAST_WORD_MASK(nbits)); @@ -192,7 +193,7 @@ static inline int bitmap_empty(const unsigned long *src, int nbits) } } -static inline int bitmap_full(const unsigned long *src, int nbits) +static inline int bitmap_full(const unsigned long *src, long nbits) { if (small_nbits(nbits)) { return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits)); @@ -202,7 +203,7 @@ static inline int bitmap_full(const unsigned long *src, int nbits) } static inline int bitmap_intersects(const unsigned long *src1, - const unsigned long *src2, int nbits) + const unsigned long *src2, long nbits) { if (small_nbits(nbits)) { return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0; @@ -211,12 +212,21 @@ static inline int bitmap_intersects(const unsigned long *src1, } } -void bitmap_set(unsigned long *map, int i, int len); -void bitmap_clear(unsigned long *map, int start, int nr); +void bitmap_set(unsigned long *map, long i, long len); +void bitmap_clear(unsigned long *map, long start, long nr); unsigned long bitmap_find_next_zero_area(unsigned long *map, - unsigned long size, - unsigned long start, - unsigned int nr, - unsigned long align_mask); + unsigned long size, + unsigned long start, + unsigned long nr, + unsigned long align_mask); + +static inline unsigned long *bitmap_zero_extend(unsigned long *old, + long old_nbits, long new_nbits) +{ + long new_len = BITS_TO_LONGS(new_nbits) * sizeof(unsigned long); + unsigned long *new = g_realloc(old, new_len); + bitmap_clear(new, old_nbits, new_nbits - old_nbits); + return new; +} #endif /* BITMAP_H */ |