posix_memalign_test.c [plain text]
#include <darwintest.h>
#include <errno.h>
#include <malloc/malloc.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
T_GLOBAL_META(T_META_RUN_CONCURRENTLY(true));
static inline void*
t_posix_memalign(size_t alignment, size_t size)
{
void *ptr = NULL;
int result = posix_memalign(&ptr, alignment, size);
size_t allocated_size = malloc_size(ptr);
T_QUIET; T_ASSERT_NOTNULL(ptr, "allocation");
T_QUIET; T_ASSERT_EQ((intptr_t)ptr % alignment, 0ul, "pointer should be properly aligned");
T_QUIET; T_EXPECT_LE(size, allocated_size, "allocation size");
const uint64_t pat = 0xdeadbeefcafebabeull;
memset_pattern8(ptr, &pat, size);
return ptr;
}
T_DECL(posix_memalign_free, "posix_memalign all power of two alignments <= 4096")
{
for (size_t alignment = sizeof(void*); alignment < 4096; alignment *= 2) {
for (size_t size = alignment; size <= 256*alignment; size += 8) {
void* ptr = t_posix_memalign(alignment, size);
free(ptr);
}
}
}
T_DECL(posix_memalign_alignment_not_a_power_of_2, "posix_memalign should return EINVAL if alignment is not a power of 2")
{
{
void *ptr = NULL;
int result = posix_memalign(&ptr, 24, 48); T_QUIET; T_ASSERT_NULL(ptr, "ptr should be null");
T_QUIET; T_ASSERT_EQ(result, EINVAL, "posix_memalign should return EINVAL");
}
{
void *ptr = NULL;
int result = posix_memalign(&ptr, 23, 46); T_QUIET; T_ASSERT_NULL(ptr, "ptr should be null");
T_QUIET; T_ASSERT_EQ(result, EINVAL, "posix_memalign should return EINVAL");
}
}
T_DECL(posix_memalign_alignment_not_a_multiple_of_voidstar, "posix_memalign should return EINVAL if alignment is not a multiple of sizeof(void*)")
{
void *ptr = NULL;
const size_t alignment = sizeof(void*)+1;
int result = posix_memalign(&ptr, alignment, alignment * 2);
T_QUIET; T_ASSERT_NULL(ptr, "ptr should be null");
T_QUIET; T_ASSERT_EQ(result, EINVAL, "posix_memalign should return EINVAL");
}
T_DECL(posix_memalign_allocate_size_0, "posix_memalign should return something that can be passed to free() when size is 0")
{
void *ptr = NULL;
int result = posix_memalign(&ptr, 8, 0);
T_QUIET; T_ASSERT_EQ(result, 0, "posix_memalign should not return an error when asked for size 0");
free(ptr);
}