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util: add greedy_realloc0()

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Compared to greedy_realloc(), this sets all newly allocated memory to 0.
As the old variant has been used a lot for string-handling, we avoid
changing it as clearing memory is not needed there.
This commit is contained in:
David Herrmann 2013-11-30 11:31:59 +01:00
parent a0a6be9f6a
commit 4545a231fc
2 changed files with 17 additions and 0 deletions
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14
src/shared/util.c
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@ -5806,6 +5806,20 @@ void* greedy_realloc(void **p, size_t *allocated, size_t need) {
return q;
}
void* greedy_realloc0(void **p, size_t *allocated, size_t need) {
size_t prev = *allocated;
uint8_t *q;
q = greedy_realloc(p, allocated, need);
if (!q)
return NULL;
if (*allocated > prev)
memset(&q[prev], 0, *allocated - prev);
return q;
}
bool id128_is_valid(const char *s) {
size_t i, l;

3
src/shared/util.h
View File

@ -669,8 +669,11 @@ char *strextend(char **x, ...) _sentinel_;
char *strrep(const char *s, unsigned n);
void* greedy_realloc(void **p, size_t *allocated, size_t need);
void* greedy_realloc0(void **p, size_t *allocated, size_t need);
#define GREEDY_REALLOC(array, allocated, need) \
greedy_realloc((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
#define GREEDY_REALLOC0(array, allocated, need) \
greedy_realloc0((void**) &(array), &(allocated), sizeof((array)[0]) * (need))
static inline void _reset_errno_(int *saved_errno) {
errno = *saved_errno;