misc

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 40 insertions, 0 deletions

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