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authorAndrew Bartlett <abartlet@samba.org>2011-07-07 21:04:31 +1000
committerAndrew Bartlett <abartlet@samba.org>2011-07-08 11:23:23 +0200
commit6e6aaacedb96ea45a5b8a9237915525a87189001 (patch)
tree8b396716924680b0fb5b7d03c21d481752c7901a /source3/lib
parent6b2749f8a9f527c1d52ba76566c661cab30b59c6 (diff)
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lib/util Move bitmap.c to lib/util
Diffstat (limited to 'source3/lib')
-rw-r--r--source3/lib/bitmap.c136
1 files changed, 0 insertions, 136 deletions
diff --git a/source3/lib/bitmap.c b/source3/lib/bitmap.c
deleted file mode 100644
index a58b9e953b..0000000000
--- a/source3/lib/bitmap.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- simple bitmap functions
- Copyright (C) Andrew Tridgell 1992-1998
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "includes.h"
-
-/* these functions provide a simple way to allocate integers from a
- pool without repetition */
-
-/****************************************************************************
-talloc a bitmap
-****************************************************************************/
-struct bitmap *bitmap_talloc(TALLOC_CTX *mem_ctx, int n)
-{
- struct bitmap *bm;
-
- bm = talloc(mem_ctx, struct bitmap);
-
- if (!bm) return NULL;
-
- bm->n = n;
- bm->b = talloc_zero_array(bm, uint32, (n+31)/32);
- if (!bm->b) {
- TALLOC_FREE(bm);
- return NULL;
- }
- return bm;
-}
-
-/****************************************************************************
-copy as much of the source bitmap as will fit in the destination bitmap.
-****************************************************************************/
-
-int bitmap_copy(struct bitmap * const dst, const struct bitmap * const src)
-{
- int count = MIN(dst->n, src->n);
-
- SMB_ASSERT(dst->b != src->b);
- memcpy(dst->b, src->b, sizeof(uint32)*((count+31)/32));
-
- return count;
-}
-
-/****************************************************************************
-set a bit in a bitmap
-****************************************************************************/
-bool bitmap_set(struct bitmap *bm, unsigned i)
-{
- if (i >= bm->n) {
- DEBUG(0,("Setting invalid bitmap entry %d (of %d)\n",
- i, bm->n));
- return false;
- }
- bm->b[i/32] |= (1<<(i%32));
- return true;
-}
-
-/****************************************************************************
-clear a bit in a bitmap
-****************************************************************************/
-bool bitmap_clear(struct bitmap *bm, unsigned i)
-{
- if (i >= bm->n) {
- DEBUG(0,("clearing invalid bitmap entry %d (of %d)\n",
- i, bm->n));
- return false;
- }
- bm->b[i/32] &= ~(1<<(i%32));
- return true;
-}
-
-/****************************************************************************
-query a bit in a bitmap
-****************************************************************************/
-bool bitmap_query(struct bitmap *bm, unsigned i)
-{
- if (i >= bm->n) return false;
- if (bm->b[i/32] & (1<<(i%32))) {
- return true;
- }
- return false;
-}
-
-/****************************************************************************
-find a zero bit in a bitmap starting at the specified offset, with
-wraparound
-****************************************************************************/
-int bitmap_find(struct bitmap *bm, unsigned ofs)
-{
- unsigned int i, j;
-
- if (ofs > bm->n) ofs = 0;
-
- i = ofs;
- while (i < bm->n) {
- if (~(bm->b[i/32])) {
- j = i;
- do {
- if (!bitmap_query(bm, j)) return j;
- j++;
- } while (j & 31 && j < bm->n);
- }
- i += 32;
- i &= ~31;
- }
-
- i = 0;
- while (i < ofs) {
- if (~(bm->b[i/32])) {
- j = i;
- do {
- if (!bitmap_query(bm, j)) return j;
- j++;
- } while (j & 31 && j < bm->n);
- }
- i += 32;
- i &= ~31;
- }
-
- return -1;
-}