-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+/* SPDX-License-Identifier: LGPL-2.1+ */
-/***
- This file is part of systemd.
-
- Copyright 2015 Tom Gundersen
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
+#include <errno.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
#include "alloc-util.h"
#include "bitmap.h"
-#include "util.h"
+#include "hashmap.h"
+#include "macro.h"
struct Bitmap {
uint64_t *bitmaps;
return new0(Bitmap, 1);
}
+Bitmap *bitmap_copy(Bitmap *b) {
+ Bitmap *ret;
+
+ ret = bitmap_new();
+ if (!ret)
+ return NULL;
+
+ ret->bitmaps = newdup(uint64_t, b->bitmaps, b->n_bitmaps);
+ if (!ret->bitmaps)
+ return mfree(ret);
+
+ ret->n_bitmaps = ret->bitmaps_allocated = b->n_bitmaps;
+ return ret;
+}
+
void bitmap_free(Bitmap *b) {
if (!b)
return;
bool bitmap_isclear(Bitmap *b) {
unsigned i;
- assert(b);
+ if (!b)
+ return true;
for (i = 0; i < b->n_bitmaps; i++)
if (b->bitmaps[i] != 0)
}
void bitmap_clear(Bitmap *b) {
- assert(b);
+
+ if (!b)
+ return;
b->bitmaps = mfree(b->bitmaps);
b->n_bitmaps = 0;
Bitmap *c;
unsigned i;
- if (!a ^ !b)
+ if (a == b)
+ return true;
+
+ if (!a != !b)
return false;
if (!a)
return true;
common_n_bitmaps = MIN(a->n_bitmaps, b->n_bitmaps);
- if (memcmp(a->bitmaps, b->bitmaps, sizeof(uint64_t) * common_n_bitmaps) != 0)
+ if (memcmp_safe(a->bitmaps, b->bitmaps, sizeof(uint64_t) * common_n_bitmaps) != 0)
return false;
c = a->n_bitmaps > b->n_bitmaps ? a : b;