diff options
Diffstat (limited to 'malloc')
| -rw-r--r-- | malloc/tst-aligned_alloc-lib.c | 39 |
1 files changed, 20 insertions, 19 deletions
diff --git a/malloc/tst-aligned_alloc-lib.c b/malloc/tst-aligned_alloc-lib.c index 0205df5acf..9ef1f839c1 100644 --- a/malloc/tst-aligned_alloc-lib.c +++ b/malloc/tst-aligned_alloc-lib.c @@ -17,37 +17,38 @@ 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> +#include <time.h> extern void *__libc_malloc (size_t size); extern void *__libc_calloc (size_t n, size_t size); +__thread unsigned int seed = 0; + 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) +static void * +get_random_alloc (size_t size) { void *retval; size_t align; + struct timespec tp; + + if (seed == 0) + { + clock_gettime (CLOCK_REALTIME, &tp); + seed = tp.tv_nsec; + } - switch (random() % 3) - { + switch (rand_r (&seed) % 3) + { case 1: - align = get_random_alignment (); + /* Get a random alignment value. Biased towards the smaller + * values up to 16384. Must be a power of 2. */ + align = 1 << rand_r (&seed) % 15; retval = aligned_alloc (align, size); aligned_alloc_count++; break; @@ -59,13 +60,13 @@ static void *get_random_alloc (size_t size) retval = __libc_malloc (size); libc_malloc_count++; break; - } + } return retval; } - -void * __random_malloc (size_t size) +void * +__random_malloc (size_t size) { return get_random_alloc (size); } |