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#include "test/jemalloc_test.h"
#define MAXALIGN (((size_t)1) << 23)
/*
* On systems which can't merge extents, tests that call this function generate
* a lot of dirty memory very quickly. Purging between cycles mitigates
* potential OOM on e.g. 32-bit Windows.
*/
static void
purge(void) {
assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
"Unexpected mallctl error");
}
TEST_BEGIN(test_alignment_errors) {
size_t alignment;
void *p;
for (alignment = 0; alignment < sizeof(void *); alignment++) {
assert_d_eq(posix_memalign(&p, alignment, 1), EINVAL,
"Expected error for invalid alignment %zu",
alignment);
}
for (alignment = sizeof(size_t); alignment < MAXALIGN;
alignment <<= 1) {
assert_d_ne(posix_memalign(&p, alignment + 1, 1), 0,
"Expected error for invalid alignment %zu",
alignment + 1);
}
}
TEST_END
TEST_BEGIN(test_oom_errors) {
size_t alignment, size;
void *p;
#if LG_SIZEOF_PTR == 3
alignment = UINT64_C(0x8000000000000000);
size = UINT64_C(0x8000000000000000);
#else
alignment = 0x80000000LU;
size = 0x80000000LU;
#endif
assert_d_ne(posix_memalign(&p, alignment, size), 0,
"Expected error for posix_memalign(&p, %zu, %zu)",
alignment, size);
#if LG_SIZEOF_PTR == 3
alignment = UINT64_C(0x4000000000000000);
size = UINT64_C(0xc000000000000001);
#else
alignment = 0x40000000LU;
size = 0xc0000001LU;
#endif
assert_d_ne(posix_memalign(&p, alignment, size), 0,
"Expected error for posix_memalign(&p, %zu, %zu)",
alignment, size);
alignment = 0x10LU;
#if LG_SIZEOF_PTR == 3
size = UINT64_C(0xfffffffffffffff0);
#else
size = 0xfffffff0LU;
#endif
assert_d_ne(posix_memalign(&p, alignment, size), 0,
"Expected error for posix_memalign(&p, %zu, %zu)",
alignment, size);
}
TEST_END
TEST_BEGIN(test_alignment_and_size) {
#define NITER 4
size_t alignment, size, total;
unsigned i;
int err;
void *ps[NITER];
for (i = 0; i < NITER; i++) {
ps[i] = NULL;
}
for (alignment = 8;
alignment <= MAXALIGN;
alignment <<= 1) {
total = 0;
for (size = 0;
size < 3 * alignment && size < (1U << 31);
size += ((size == 0) ? 1 :
(alignment >> (LG_SIZEOF_PTR-1)) - 1)) {
for (i = 0; i < NITER; i++) {
err = posix_memalign(&ps[i],
alignment, size);
if (err) {
char buf[BUFERROR_BUF];
buferror(get_errno(), buf, sizeof(buf));
test_fail(
"Error for alignment=%zu, "
"size=%zu (%#zx): %s",
alignment, size, size, buf);
}
total += malloc_usable_size(ps[i]);
if (total >= (MAXALIGN << 1)) {
break;
}
}
for (i = 0; i < NITER; i++) {
if (ps[i] != NULL) {
free(ps[i]);
ps[i] = NULL;
}
}
}
purge();
}
#undef NITER
}
TEST_END
int
main(void) {
return test(
test_alignment_errors,
test_oom_errors,
test_alignment_and_size);
}
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