diff options
author | Mike Frysinger <vapier@gentoo.org> | 2006-02-15 05:30:52 +0000 |
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committer | Mike Frysinger <vapier@gentoo.org> | 2006-02-15 05:30:52 +0000 |
commit | 909d563a32cd935b02c1d8f8857177e246929874 (patch) | |
tree | e6732b7e1f14824dde901759dce9e1a6b8ba82aa /test/malloc/tst-obstack.c | |
parent | 85a3c4880f67ad5afeb2a77c43db5b161a16854f (diff) |
import tests from glibc
Diffstat (limited to 'test/malloc/tst-obstack.c')
-rw-r--r-- | test/malloc/tst-obstack.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/test/malloc/tst-obstack.c b/test/malloc/tst-obstack.c new file mode 100644 index 000000000..769697f18 --- /dev/null +++ b/test/malloc/tst-obstack.c @@ -0,0 +1,64 @@ +/* Test case by Alexandre Duret-Lutz <duret_g@epita.fr>. */ +#include <obstack.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> + +#define obstack_chunk_alloc verbose_malloc +#define obstack_chunk_free verbose_free +#define ALIGN_BOUNDARY 64 +#define ALIGN_MASK (ALIGN_BOUNDARY - 1) +#define OBJECT_SIZE 1000 + +static void * +verbose_malloc (size_t size) +{ + void *buf = malloc (size); + printf ("malloc (%zu) => %p\n", size, buf); + return buf; +} + +static void +verbose_free (void *buf) +{ + free (buf); + printf ("free (%p)\n", buf); +} + +int +main (void) +{ + int result = 0; + int align = 2; + + while (align <= 64) + { + struct obstack obs; + int i; + int align_mask = align - 1; + + printf ("\n Alignment mask: %d\n", align_mask); + + obstack_init (&obs); + obstack_alignment_mask (&obs) = align_mask; + /* finish an empty object to take alignment into account */ + obstack_finish (&obs); + + /* let's allocate some objects and print their addresses */ + for (i = 15; i > 0; --i) + { + void *obj = obstack_alloc (&obs, OBJECT_SIZE); + + printf ("obstack_alloc (%u) => %p \t%s\n", OBJECT_SIZE, obj, + ((uintptr_t) obj & align_mask) ? "(not aligned)" : ""); + result |= ((uintptr_t) obj & align_mask) != 0; + } + + /* clean up */ + obstack_free (&obs, 0); + + align <<= 1; + } + + return result; +} |