diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2012-12-17 18:20:00 +0100 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2012-12-19 08:32:39 +0100 |
commit | 1de7afc984b49af164e2619e6850b9732b173b34 (patch) | |
tree | 60cd16f527440fcfcdb81d9bea1af5d9147604c4 /bitmap.h | |
parent | 14cccb618508a0aa70eb9ccf366703a019a45ff0 (diff) |
misc: move include files to include/qemu/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'bitmap.h')
-rw-r--r-- | bitmap.h | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/bitmap.h b/bitmap.h deleted file mode 100644 index 08755eba11..0000000000 --- a/bitmap.h +++ /dev/null @@ -1,222 +0,0 @@ -/* - * Bitmap Module - * - * Copyright (C) 2010 Corentin Chary <corentin.chary@gmail.com> - * - * Mostly inspired by (stolen from) linux/bitmap.h and linux/bitops.h - * - * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. - * See the COPYING.LIB file in the top-level directory. - */ - -#ifndef BITMAP_H -#define BITMAP_H - -#include "qemu-common.h" -#include "bitops.h" - -/* - * The available bitmap operations and their rough meaning in the - * case that the bitmap is a single unsigned long are thus: - * - * Note that nbits should be always a compile time evaluable constant. - * Otherwise many inlines will generate horrible code. - * - * bitmap_zero(dst, nbits) *dst = 0UL - * bitmap_fill(dst, nbits) *dst = ~0UL - * bitmap_copy(dst, src, nbits) *dst = *src - * bitmap_and(dst, src1, src2, nbits) *dst = *src1 & *src2 - * bitmap_or(dst, src1, src2, nbits) *dst = *src1 | *src2 - * bitmap_xor(dst, src1, src2, nbits) *dst = *src1 ^ *src2 - * 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_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 - * bitmap_clear(dst, pos, nbits) Clear specified bit area - * bitmap_find_next_zero_area(buf, len, pos, n, mask) Find bit free area - */ - -/* - * Also the following operations apply to bitmaps. - * - * set_bit(bit, addr) *addr |= bit - * clear_bit(bit, addr) *addr &= ~bit - * change_bit(bit, addr) *addr ^= bit - * test_bit(bit, addr) Is bit set in *addr? - * test_and_set_bit(bit, addr) Set bit and return old value - * test_and_clear_bit(bit, addr) Clear bit and return old value - * test_and_change_bit(bit, addr) Change bit and return old value - * find_first_zero_bit(addr, nbits) Position first zero bit in *addr - * find_first_bit(addr, nbits) Position first set bit in *addr - * find_next_zero_bit(addr, nbits, bit) Position next zero bit in *addr >= bit - * find_next_bit(addr, nbits, bit) Position next set bit in *addr >= bit - */ - -#define BITMAP_LAST_WORD_MASK(nbits) \ - ( \ - ((nbits) % BITS_PER_LONG) ? \ - (1UL<<((nbits) % BITS_PER_LONG))-1 : ~0UL \ - ) - -#define DECLARE_BITMAP(name,bits) \ - unsigned long name[BITS_TO_LONGS(bits)] - -#define small_nbits(nbits) \ - ((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_equal(const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); -void slow_bitmap_complement(unsigned long *dst, const unsigned long *src, - int bits); -void slow_bitmap_shift_right(unsigned long *dst, - const unsigned long *src, int shift, int bits); -void slow_bitmap_shift_left(unsigned long *dst, - const unsigned long *src, int shift, int bits); -int slow_bitmap_and(unsigned long *dst, const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); -void slow_bitmap_or(unsigned long *dst, const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); -void slow_bitmap_xor(unsigned long *dst, const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); -int slow_bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); -int slow_bitmap_intersects(const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); - -static inline unsigned long *bitmap_new(int nbits) -{ - int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); - return g_malloc0(len); -} - -static inline void bitmap_zero(unsigned long *dst, int nbits) -{ - if (small_nbits(nbits)) { - *dst = 0UL; - } else { - int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); - memset(dst, 0, len); - } -} - -static inline void bitmap_fill(unsigned long *dst, int nbits) -{ - size_t nlongs = BITS_TO_LONGS(nbits); - if (!small_nbits(nbits)) { - int 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) -{ - if (small_nbits(nbits)) { - *dst = *src; - } else { - int 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) -{ - if (small_nbits(nbits)) { - return (*dst = *src1 & *src2) != 0; - } - return slow_bitmap_and(dst, src1, src2, nbits); -} - -static inline void bitmap_or(unsigned long *dst, const unsigned long *src1, - const unsigned long *src2, int nbits) -{ - if (small_nbits(nbits)) { - *dst = *src1 | *src2; - } else { - slow_bitmap_or(dst, src1, src2, nbits); - } -} - -static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1, - const unsigned long *src2, int nbits) -{ - if (small_nbits(nbits)) { - *dst = *src1 ^ *src2; - } else { - slow_bitmap_xor(dst, src1, src2, nbits); - } -} - -static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1, - const unsigned long *src2, int nbits) -{ - if (small_nbits(nbits)) { - return (*dst = *src1 & ~(*src2)) != 0; - } - return slow_bitmap_andnot(dst, src1, src2, nbits); -} - -static inline void bitmap_complement(unsigned long *dst, const unsigned long *src, - int nbits) -{ - if (small_nbits(nbits)) { - *dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits); - } else { - slow_bitmap_complement(dst, src, nbits); - } -} - -static inline int bitmap_equal(const unsigned long *src1, - const unsigned long *src2, int nbits) -{ - if (small_nbits(nbits)) { - return ! ((*src1 ^ *src2) & BITMAP_LAST_WORD_MASK(nbits)); - } else { - return slow_bitmap_equal(src1, src2, nbits); - } -} - -static inline int bitmap_empty(const unsigned long *src, int nbits) -{ - if (small_nbits(nbits)) { - return ! (*src & BITMAP_LAST_WORD_MASK(nbits)); - } else { - return slow_bitmap_empty(src, nbits); - } -} - -static inline int bitmap_full(const unsigned long *src, int nbits) -{ - if (small_nbits(nbits)) { - return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits)); - } else { - return slow_bitmap_full(src, nbits); - } -} - -static inline int bitmap_intersects(const unsigned long *src1, - const unsigned long *src2, int nbits) -{ - if (small_nbits(nbits)) { - return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0; - } else { - return slow_bitmap_intersects(src1, src2, nbits); - } -} - -void bitmap_set(unsigned long *map, int i, int len); -void bitmap_clear(unsigned long *map, int start, int nr); -unsigned long bitmap_find_next_zero_area(unsigned long *map, - unsigned long size, - unsigned long start, - unsigned int nr, - unsigned long align_mask); - -#endif /* BITMAP_H */ |