diff options
Diffstat (limited to 'malloc/tst-aligned_alloc-lib.c')
-rw-r--r-- | malloc/tst-aligned_alloc-lib.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/malloc/tst-aligned_alloc-lib.c b/malloc/tst-aligned_alloc-lib.c new file mode 100644 index 0000000..0205df5 --- /dev/null +++ b/malloc/tst-aligned_alloc-lib.c @@ -0,0 +1,72 @@ +/* Module used for improved aligned_alloc testing. + Copyright (C) 2024 Free Software Foundation, Inc. + Copyright The GNU Toolchain Authors. + This file is part of the GNU C Library. + + The GNU C Library 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. + + The GNU C Library 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 the GNU C Library; see the file COPYING.LIB. If + not, see <https://www.gnu.org/licenses/>. */ + +#include <array_length.h> +#include <libc-symbols.h> +#include <stdlib.h> + +extern void *__libc_malloc (size_t size); +extern void *__libc_calloc (size_t n, size_t size); + +int aligned_alloc_count = 0; +int libc_malloc_count = 0; +int libc_calloc_count = 0; + +/* Get a random alignment value. Biased towards the smaller values. Must be + a power of 2. */ +static size_t get_random_alignment (void) +{ + size_t aligns[] = { + 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384 + }; + + return aligns[random () % array_length (aligns)]; +} + +static void *get_random_alloc (size_t size) +{ + void *retval; + size_t align; + + switch (random() % 3) + { + case 1: + align = get_random_alignment (); + retval = aligned_alloc (align, size); + aligned_alloc_count++; + break; + case 2: + retval = __libc_calloc (1, size); + libc_calloc_count++; + break; + default: + retval = __libc_malloc (size); + libc_malloc_count++; + break; + } + + return retval; +} + + +void * __random_malloc (size_t size) +{ + return get_random_alloc (size); +} +strong_alias (__random_malloc, malloc) |