native/runtime/test_os.cpp

25 #include "runtime/os.hpp"
29   return os::vm_page_size();
34   return os::page_size_for_region_aligned(large_page_size_example, 1);
37 TEST_VM(os, page_size_for_region) {
39   size_t large_page = os::page_size_for_region_aligned(large_page_example, 1);
41   size_t small_page = os::vm_page_size();
44     size_t page = os::page_size_for_region_aligned(large_page, num_small_in_large);
49 TEST_VM(os, page_size_for_region_aligned) {
56       size_t page = os::page_size_for_region_aligned(large_page, num_small_pages_in_large);
63 TEST_VM(os, page_size_for_region_alignment) {
69       size_t page = os::page_size_for_region_aligned(unaligned_region, 1);
74       page = os::page_size_for_region_aligned(aligned_region, num_pages);
80 TEST_VM(os, page_size_for_region_unaligned) {
83     for (size_t i = 0; os::_page_sizes[i] != 0; i++) {
84       size_t expected = os::_page_sizes[i];
85       size_t actual = os::page_size_for_region_unaligned(expected, 1);
90     for (size_t i = 0; os::_page_sizes[i] != 0; i++) {
91       size_t expected = os::_page_sizes[i];
92       size_t actual = os::page_size_for_region_unaligned(expected + 17, 1);
98     if (os::_page_sizes[1] > os::_page_sizes[0]) {
99       size_t expected = os::_page_sizes[0];
100       size_t actual = os::page_size_for_region_unaligned(os::_page_sizes[1] - 17, 1);
106     size_t actual = os::page_size_for_region_unaligned(small_page - 17, 1);
111 TEST(os, test_random) {
118   os::init_random(seed);
121     num = os::random();
148 TEST_VM_ASSERT_MSG(os, page_size_for_region_with_zero_min_pages, "sanity") {
149   size_t region_size = 16 * os::vm_page_size();
150   os::page_size_for_region_aligned(region_size, 0); // should assert