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