diff options
| -rw-r--r-- | src/basic/alloc-util.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/basic/alloc-util.c b/src/basic/alloc-util.c index f4bd33f4e0..a16db6824f 100644 --- a/src/basic/alloc-util.c +++ b/src/basic/alloc-util.c @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: LGPL-2.1+ */ +#include <malloc.h> #include <stdint.h> #include <string.h> @@ -63,6 +64,29 @@ void* greedy_realloc(void **p, size_t *allocated, size_t need, size_t size) { if (!q) return NULL; + if (size > 0) { + size_t bn; + + /* Adjust for the 64 byte minimum */ + newalloc = a / size; + + bn = malloc_usable_size(q) / size; + if (bn > newalloc) { + void *qq; + + /* The actual size allocated is larger than what we asked for. Let's call realloc() again to + * take possession of the extra space. This should be cheap, since libc doesn't have to move + * the memory for this. */ + + qq = realloc(q, bn * size); + if (_likely_(qq)) { + *p = qq; + *allocated = bn; + return qq; + } + } + } + *p = q; *allocated = newalloc; return q; |