1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "common/libs/utils/size_utils.h" 18 19 #include <unistd.h> 20 21 namespace cvd { 22 23 uint32_t AlignToPageSize(uint32_t val) { 24 static uint32_t page_size = sysconf(_SC_PAGESIZE); 25 return ((val + (page_size - 1)) / page_size) * page_size; 26 } 27 28 uint32_t RoundUpToNextPowerOf2(uint32_t val) { 29 uint32_t power_of_2 = 1; 30 while (power_of_2 < val) { 31 power_of_2 *= 2; 32 } 33 return power_of_2; 34 } 35 36 uint32_t AlignToPowerOf2(uint32_t val, uint8_t align_log) { 37 uint32_t align = 1 << align_log; 38 return ((val + (align - 1)) / align) * align; 39 } 40 41 } // namespace cvd 42
