aligned_alloc_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_aligned_alloc(size_t alignment, size_t size)
{
void *ptr = aligned_alloc(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(aligned_alloc_free, "aligned_alloc all power of two alignments <= 256kb")
{
for (size_t alignment = sizeof(void*); alignment < 4096; alignment *= 2) {
for (size_t size = alignment; size <= 512*alignment; size += alignment) {
void* ptr = t_aligned_alloc(alignment, size);
free(ptr);
}
}
}
T_DECL(aligned_alloc_alignment_not_multiple_of_size, "aligned_alloc should set errno to EINVAL if size is not a multiple of alignment")
{
{
void *ptr = aligned_alloc(8, 12);
T_QUIET; T_ASSERT_NULL(ptr, "ptr should be null");
T_QUIET; T_ASSERT_EQ(errno, EINVAL, "errno should be EINVAL");
}
{
void *ptr = aligned_alloc(32, 16);
T_QUIET; T_ASSERT_NULL(ptr, "ptr should be null");
T_QUIET; T_ASSERT_EQ(errno, EINVAL, "errno should be EINVAL");
}
}
T_DECL(aligned_alloc_alignment_not_power_of_two, "aligned_alloc should set errno to EINVAL if alignment is not a power of two (implementation constraint)")
{
{
void *ptr = aligned_alloc(24, 48); T_QUIET; T_ASSERT_NULL(ptr, "ptr should be null");
T_QUIET; T_ASSERT_EQ(errno, EINVAL, "errno should be EINVAL");
}
{
void *ptr = aligned_alloc(23, 46); T_QUIET; T_ASSERT_NULL(ptr, "ptr should be null");
T_QUIET; T_ASSERT_EQ(errno, EINVAL, "errno should be EINVAL");
}
}
T_DECL(aligned_alloc_alignment_not_a_multiple_of_voidstar, "aligned_alloc should set errno to EINVAL if alignment is not a multiple of sizeof(void*) (implementation constraint)")
{
const size_t alignment = sizeof(void*)+1;
void *ptr = aligned_alloc(alignment, alignment * 2);
T_QUIET; T_ASSERT_NULL(ptr, "ptr should be null");
T_QUIET; T_ASSERT_EQ(errno, EINVAL, "aligned_alloc should set errno to EINVAL");
}