0c69794138
These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
82 lines
1.6 KiB
C
82 lines
1.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <stdint.h>
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#include <string.h>
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#include "alloc-util.h"
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#include "macro.h"
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#include "util.h"
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void* memdup(const void *p, size_t l) {
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void *ret;
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assert(l == 0 || p);
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ret = malloc(l);
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if (!ret)
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return NULL;
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memcpy(ret, p, l);
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return ret;
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}
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void* memdup_suffix0(const void *p, size_t l) {
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void *ret;
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assert(l == 0 || p);
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/* The same as memdup() but place a safety NUL byte after the allocated memory */
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ret = malloc(l + 1);
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if (!ret)
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return NULL;
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*((uint8_t*) mempcpy(ret, p, l)) = 0;
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return ret;
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}
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void* greedy_realloc(void **p, size_t *allocated, size_t need, size_t size) {
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size_t a, newalloc;
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void *q;
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assert(p);
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assert(allocated);
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if (*allocated >= need)
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return *p;
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newalloc = MAX(need * 2, 64u / size);
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a = newalloc * size;
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/* check for overflows */
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if (a < size * need)
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return NULL;
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q = realloc(*p, a);
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if (!q)
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return NULL;
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*p = q;
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*allocated = newalloc;
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return q;
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}
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void* greedy_realloc0(void **p, size_t *allocated, size_t need, size_t size) {
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size_t prev;
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uint8_t *q;
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assert(p);
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assert(allocated);
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prev = *allocated;
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q = greedy_realloc(p, allocated, need, size);
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if (!q)
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return NULL;
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if (*allocated > prev)
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memzero(q + prev * size, (*allocated - prev) * size);
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return q;
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}
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