1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include "precompiled.hpp" 25 #include "utilities/align.hpp" 26 #include "utilities/formatBuffer.hpp" 27 #include "utilities/globalDefinitions.hpp" 28 #include "unittest.hpp" 29 30 #include <limits> 31 32 // A few arbitrarily chosen values to test the align functions on. 33 static uint64_t values[] = {1, 3, 10, 345, 1023, 1024, 1025, 23909034, INT_MAX, uint64_t(-1) / 2, uint64_t(-1) / 2 + 100, -1 }; 34 35 template <typename T> 36 static T max_alignment() { 37 T max = std::numeric_limits<T>::max(); 38 return max ^ (max >> 1); 39 } 40 41 #define log(...) SCOPED_TRACE(err_msg(__VA_ARGS__).buffer()) 42 43 template <typename T, typename A> 44 static void test_alignments() { 45 log("### Test: %c" SIZE_FORMAT " " UINT64_FORMAT " : %c" SIZE_FORMAT " " UINT64_FORMAT " ###\n", 46 std::numeric_limits<T>::is_signed ? 's' : 'u', sizeof(T), (uint64_t)std::numeric_limits<T>::max(), 47 std::numeric_limits<A>::is_signed ? 's' : 'u', sizeof(A), (uint64_t)std::numeric_limits<A>::max()); 48 49 // Test all possible alignment values that fit in type A. 50 for (A alignment = max_alignment<A>(); alignment > 0; alignment >>= 1) { 51 log("=== Alignment: " UINT64_FORMAT " ===\n", (uint64_t)alignment); 52 53 for (size_t i = 0; i < ARRAY_SIZE(values); i++) { | 1 /* 2 * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include "precompiled.hpp" 25 #include "utilities/align.hpp" 26 #include "utilities/formatBuffer.hpp" 27 #include "utilities/globalDefinitions.hpp" 28 #include "unittest.hpp" 29 30 #include <limits> 31 32 // A few arbitrarily chosen values to test the align functions on. 33 static uint64_t values[] = {1, 3, 10, 345, 1023, 1024, 1025, 23909034, INT_MAX, uint64_t(-1) / 2, uint64_t(-1) / 2 + 100, uint64_t(-1)}; 34 35 template <typename T> 36 static T max_alignment() { 37 T max = std::numeric_limits<T>::max(); 38 return max ^ (max >> 1); 39 } 40 41 #define log(...) SCOPED_TRACE(err_msg(__VA_ARGS__).buffer()) 42 43 template <typename T, typename A> 44 static void test_alignments() { 45 log("### Test: %c" SIZE_FORMAT " " UINT64_FORMAT " : %c" SIZE_FORMAT " " UINT64_FORMAT " ###\n", 46 std::numeric_limits<T>::is_signed ? 's' : 'u', sizeof(T), (uint64_t)std::numeric_limits<T>::max(), 47 std::numeric_limits<A>::is_signed ? 's' : 'u', sizeof(A), (uint64_t)std::numeric_limits<A>::max()); 48 49 // Test all possible alignment values that fit in type A. 50 for (A alignment = max_alignment<A>(); alignment > 0; alignment >>= 1) { 51 log("=== Alignment: " UINT64_FORMAT " ===\n", (uint64_t)alignment); 52 53 for (size_t i = 0; i < ARRAY_SIZE(values); i++) { |