1.1 --- a/src/share/vm/utilities/globalDefinitions.cpp Wed Apr 03 16:43:09 2013 -0700
1.2 +++ b/src/share/vm/utilities/globalDefinitions.cpp Thu Apr 04 10:01:26 2013 -0700
1.3 @@ -355,3 +355,33 @@
1.4
1.5 return size_t(result);
1.6 }
1.7 +
1.8 +#ifndef PRODUCT
1.9 +
1.10 +void GlobalDefinitions::test_globals() {
1.11 + intptr_t page_sizes[] = { os::vm_page_size(), 4096, 8192, 65536, 2*1024*1024 };
1.12 + const int num_page_sizes = sizeof(page_sizes) / sizeof(page_sizes[0]);
1.13 +
1.14 + for (int i = 0; i < num_page_sizes; i++) {
1.15 + intptr_t page_size = page_sizes[i];
1.16 +
1.17 + address a_page = (address)(10*page_size);
1.18 +
1.19 + // Check that address within page is returned as is
1.20 + assert(clamp_address_in_page(a_page, a_page, page_size) == a_page, "incorrect");
1.21 + assert(clamp_address_in_page(a_page + 128, a_page, page_size) == a_page + 128, "incorrect");
1.22 + assert(clamp_address_in_page(a_page + page_size - 1, a_page, page_size) == a_page + page_size - 1, "incorrect");
1.23 +
1.24 + // Check that address above page returns start of next page
1.25 + assert(clamp_address_in_page(a_page + page_size, a_page, page_size) == a_page + page_size, "incorrect");
1.26 + assert(clamp_address_in_page(a_page + page_size + 1, a_page, page_size) == a_page + page_size, "incorrect");
1.27 + assert(clamp_address_in_page(a_page + page_size*5 + 1, a_page, page_size) == a_page + page_size, "incorrect");
1.28 +
1.29 + // Check that address below page returns start of page
1.30 + assert(clamp_address_in_page(a_page - 1, a_page, page_size) == a_page, "incorrect");
1.31 + assert(clamp_address_in_page(a_page - 2*page_size - 1, a_page, page_size) == a_page, "incorrect");
1.32 + assert(clamp_address_in_page(a_page - 5*page_size - 1, a_page, page_size) == a_page, "incorrect");
1.33 + }
1.34 +}
1.35 +
1.36 +#endif // PRODUCT
