From 47128b7def4954c4cf544924c94f018d88033374 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sun, 2 Sep 2018 15:32:56 +0200 Subject: misc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- aligned_memdup.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 aligned_memdup.c (limited to 'aligned_memdup.c') diff --git a/aligned_memdup.c b/aligned_memdup.c new file mode 100644 index 0000000..2dbba7b --- /dev/null +++ b/aligned_memdup.c @@ -0,0 +1,40 @@ +/* See LICENSE file for copyright and license details. */ +#include "libsimple.h" +#ifndef TEST + + +void * +libsimple_aligned_memdup(const void *s, size_t alignment, size_t n) +{ + void *ret = aligned_alloc(alignment, n + (alignment - n % alignment) % alignment); + if (!ret) + return NULL; + return memcpy(ret, s, n); +} + + +#else +#include "test.h" + +int +main(void) +{ + struct allocinfo *info; + const char *s = "test"; + void *p = libsimple_aligned_memdup(s, 4, 5); + assert(p); + assert(p != s); + assert(!((uintptr_t)s % 4)); + if (have_custom_malloc()) { + assert((info = get_allocinfo(p))); + assert(info->size == 8); + assert(info->alignment == 4); + } + assert(!strcmpnul(p, s)); + memset(p, 0, 5); + assert(!strcmpnul(s, "test")); + free(p); + return 0; +} + +#endif -- cgit v1.2.3-70-g09d2