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bitmap: use long as index 

Move index and size fields from int to long.  We need that for
migration.  long is 64 bits on sane architectures, and 32bits should
be enough on all the 32bits architectures.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
pull/4/merge
Juan Quintela 13 years ago
parent
2668b4bff4
commit
9c22687ea8
3 changed files with 76 additions and 75 deletions
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  1. 77
      include/qemu/bitmap.h
  2. 14
      include/qemu/bitops.h
  3. 60
      util/bitmap.c

77
include/qemu/bitmap.h
View File

@ -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 +212,12 @@ 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);
#endif /* BITMAP_H */

14
include/qemu/bitops.h
View File

@ -28,7 +28,7 @@
* @nr: the bit to set
* @addr: the address to start counting from
*/
static inline void set_bit(int nr, unsigned long *addr)
static inline void set_bit(long nr, unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = addr + BIT_WORD(nr);
@ -41,7 +41,7 @@ static inline void set_bit(int nr, unsigned long *addr)
* @nr: Bit to clear
* @addr: Address to start counting from
*/
static inline void clear_bit(int nr, unsigned long *addr)
static inline void clear_bit(long nr, unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = addr + BIT_WORD(nr);
@ -54,7 +54,7 @@ static inline void clear_bit(int nr, unsigned long *addr)
* @nr: Bit to change
* @addr: Address to start counting from
*/
static inline void change_bit(int nr, unsigned long *addr)
static inline void change_bit(long nr, unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = addr + BIT_WORD(nr);
@ -67,7 +67,7 @@ static inline void change_bit(int nr, unsigned long *addr)
* @nr: Bit to set
* @addr: Address to count from
*/
static inline int test_and_set_bit(int nr, unsigned long *addr)
static inline int test_and_set_bit(long nr, unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = addr + BIT_WORD(nr);
@ -82,7 +82,7 @@ static inline int test_and_set_bit(int nr, unsigned long *addr)
* @nr: Bit to clear
* @addr: Address to count from
*/
static inline int test_and_clear_bit(int nr, unsigned long *addr)
static inline int test_and_clear_bit(long nr, unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = addr + BIT_WORD(nr);
@ -97,7 +97,7 @@ static inline int test_and_clear_bit(int nr, unsigned long *addr)
* @nr: Bit to change
* @addr: Address to count from
*/
static inline int test_and_change_bit(int nr, unsigned long *addr)
static inline int test_and_change_bit(long nr, unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = addr + BIT_WORD(nr);
@ -112,7 +112,7 @@ static inline int test_and_change_bit(int nr, unsigned long *addr)
* @nr: bit number to test
* @addr: Address to start counting from
*/
static inline int test_bit(int nr, const unsigned long *addr)
static inline int test_bit(long nr, const unsigned long *addr)
{
return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
}

60
util/bitmap.c
View File

@ -36,9 +36,9 @@
* endian architectures.
*/
int slow_bitmap_empty(const unsigned long *bitmap, int bits)
int slow_bitmap_empty(const unsigned long *bitmap, long bits)
{
int k, lim = bits/BITS_PER_LONG;
long k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k) {
if (bitmap[k]) {
@ -54,9 +54,9 @@ int slow_bitmap_empty(const unsigned long *bitmap, int bits)
return 1;
}
int slow_bitmap_full(const unsigned long *bitmap, int bits)
int slow_bitmap_full(const unsigned long *bitmap, long bits)
{
int k, lim = bits/BITS_PER_LONG;
long k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k) {
if (~bitmap[k]) {
@ -74,9 +74,9 @@ int slow_bitmap_full(const unsigned long *bitmap, int bits)
}
int slow_bitmap_equal(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
const unsigned long *bitmap2, long bits)
{
int k, lim = bits/BITS_PER_LONG;
long k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k) {
if (bitmap1[k] != bitmap2[k]) {
@ -94,9 +94,9 @@ int slow_bitmap_equal(const unsigned long *bitmap1,
}
void slow_bitmap_complement(unsigned long *dst, const unsigned long *src,
int bits)
long bits)
{
int k, lim = bits/BITS_PER_LONG;
long k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k) {
dst[k] = ~src[k];
@ -108,10 +108,10 @@ void slow_bitmap_complement(unsigned long *dst, const unsigned long *src,
}
int slow_bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
const unsigned long *bitmap2, long bits)
{
int k;
int nr = BITS_TO_LONGS(bits);
long k;
long nr = BITS_TO_LONGS(bits);
unsigned long result = 0;
for (k = 0; k < nr; k++) {
@ -121,10 +121,10 @@ int slow_bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
}
void slow_bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
const unsigned long *bitmap2, long bits)
{
int k;
int nr = BITS_TO_LONGS(bits);
long k;
long nr = BITS_TO_LONGS(bits);
for (k = 0; k < nr; k++) {
dst[k] = bitmap1[k] | bitmap2[k];
@ -132,10 +132,10 @@ void slow_bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
}
void slow_bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
const unsigned long *bitmap2, long bits)
{
int k;
int nr = BITS_TO_LONGS(bits);
long k;
long nr = BITS_TO_LONGS(bits);
for (k = 0; k < nr; k++) {
dst[k] = bitmap1[k] ^ bitmap2[k];
@ -143,10 +143,10 @@ void slow_bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
}
int slow_bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
const unsigned long *bitmap2, long bits)
{
int k;
int nr = BITS_TO_LONGS(bits);
long k;
long nr = BITS_TO_LONGS(bits);
unsigned long result = 0;
for (k = 0; k < nr; k++) {
@ -157,10 +157,10 @@ int slow_bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) % BITS_PER_LONG))
void bitmap_set(unsigned long *map, int start, int nr)
void bitmap_set(unsigned long *map, long start, long nr)
{
unsigned long *p = map + BIT_WORD(start);
const int size = start + nr;
const long size = start + nr;
int bits_to_set = BITS_PER_LONG - (start % BITS_PER_LONG);
unsigned long mask_to_set = BITMAP_FIRST_WORD_MASK(start);
@ -177,10 +177,10 @@ void bitmap_set(unsigned long *map, int start, int nr)
}
}
void bitmap_clear(unsigned long *map, int start, int nr)
void bitmap_clear(unsigned long *map, long start, long nr)
{
unsigned long *p = map + BIT_WORD(start);
const int size = start + nr;
const long size = start + nr;
int bits_to_clear = BITS_PER_LONG - (start % BITS_PER_LONG);
unsigned long mask_to_clear = BITMAP_FIRST_WORD_MASK(start);
@ -212,10 +212,10 @@ void bitmap_clear(unsigned long *map, int start, int nr)
* power of 2. A @align_mask of 0 means no alignment is required.
*/
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)
{
unsigned long index, end, i;
again:
@ -237,9 +237,9 @@ again:
}
int slow_bitmap_intersects(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits)
const unsigned long *bitmap2, long bits)
{
int k, lim = bits/BITS_PER_LONG;
long k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k) {
if (bitmap1[k] & bitmap2[k]) {

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