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Add unit test of aligned isc_mem functions

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Add unit test that checks whether all the aligned functions work and
that allocators return memory aligned at the specified boundary.
This commit is contained in:
Ondřej Surý 2021-12-15 11:16:46 +01:00 committed by Ondřej Surý
parent 6269fce0fe
commit d026ddde82
1 changed files with 46 additions and 1 deletions
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47
lib/isc/tests/mem_test.c
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@ -12,6 +12,7 @@
#if HAVE_CMOCKA
#include <fcntl.h>
#include <inttypes.h>
#include <sched.h> /* IWYU pragma: keep */
#include <setjmp.h>
#include <stdarg.h>
@ -148,6 +149,45 @@ isc_mem_test(void **state) {
isc_mempool_destroy(&mp1);
}
#if defined(HAVE_MALLOC_NP_H) || defined(HAVE_JEMALLOC)
/* aligned memory system tests */
static void
isc_mem_aligned_test(void **state) {
isc_mem_t *mctx2 = NULL;
void *ptr;
size_t alignment;
uintptr_t aligned;
UNUSED(state);
/* Check different alignment sizes up to the page size */
for (alignment = sizeof(void *); alignment <= 4096; alignment *= 2) {
size_t size = alignment / 2 - 1;
ptr = isc_mem_get_aligned(test_mctx, size, alignment);
/* Check if the pointer is properly aligned */
aligned = (((uintptr_t)ptr / alignment) * alignment);
assert_ptr_equal(aligned, (uintptr_t)ptr);
/* Check if we can resize to <alignment, 2*alignment> range */
ptr = isc_mem_reget_aligned(test_mctx, ptr, size,
size * 2 + alignment, alignment);
/* Check if the pointer is still properly aligned */
aligned = (((uintptr_t)ptr / alignment) * alignment);
assert_ptr_equal(aligned, (uintptr_t)ptr);
isc_mem_put_aligned(test_mctx, ptr, size * 2 + alignment,
alignment);
/* Check whether isc_mem_putanddetach_detach() also works */
isc_mem_create(&mctx2);
ptr = isc_mem_get_aligned(mctx2, size, alignment);
isc_mem_putanddetach_aligned(&mctx2, ptr, size, alignment);
}
}
#endif /* defined(HAVE_MALLOC_NP_H) || defined(HAVE_JEMALLOC) */
/* test TotalUse calculation */
static void
isc_mem_total_test(void **state) {
@ -474,7 +514,8 @@ isc_mem_benchmark(void **state) {
t = isc_time_microdiff(&ts2, &ts1);
printf("[ TIME ] isc_mem_benchmark: "
"%d isc_mem_{get,put} calls, %f seconds, %f calls/second\n",
"%d isc_mem_{get,put} calls, %f seconds, %f "
"calls/second\n",
nthreads * ITERS * NUM_ITEMS, t / 1000000.0,
(nthreads * ITERS * NUM_ITEMS) / (t / 1000000.0));
}
@ -490,6 +531,10 @@ main(void) {
const struct CMUnitTest tests[] = {
cmocka_unit_test_setup_teardown(isc_mem_test, _setup,
_teardown),
#if defined(HAVE_MALLOC_NP_H) || defined(HAVE_JEMALLOC)
cmocka_unit_test_setup_teardown(isc_mem_aligned_test, _setup,
_teardown),
#endif /* defined(HAVE_MALLOC_NP_H) || defined(HAVE_JEMALLOC) */
cmocka_unit_test_setup_teardown(isc_mem_total_test, _setup,
_teardown),
cmocka_unit_test_setup_teardown(isc_mem_inuse_test, _setup,