mtx_plain
case mtx_plain:
case mtx_plain | mtx_recursive:
VERIFY3S(mtx_init(&stress_mtx, mtx_plain), ==, thrd_success);
VERIFY3S(mtx_init(&broadcast_mtx, mtx_plain), ==, thrd_success);
VERIFY3S(mtx_init(&signal_mtx, mtx_plain), ==, thrd_success);
VERIFY3S(mtx_init(&mtx, mtx_plain), ==, thrd_success);
VERIFY3S(mtx_init(&mtx, mtx_plain), ==, thrd_success);
VERIFY3S(mtx_init(&mtx, mtx_plain | mtx_recursive), ==, thrd_success);
VERIFY3S(mtx_init(&mtx, mtx_plain | mtx_recursive), ==, thrd_success);
VERIFY3S(mtx_init(&mtx, mtx_plain), ==, thrd_success);
VERIFY3S(mtx_init(&ct_mtx, mtx_plain), ==, thrd_success);
VERIFY3S(mtx_init(&co_once_mtx, mtx_plain), ==, thrd_success);
VERIFY3S(mtx_init(&co_mtx, mtx_plain), ==, thrd_success);