1 /* 2 * Copyright (C) 2019 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 #pragma once 18 19 #include <stdint.h> 20 #include <time.h> 21 Nanotime()22static __always_inline uint64_t Nanotime() { 23 struct timespec t = {}; 24 clock_gettime(CLOCK_MONOTONIC, &t); 25 return static_cast<uint64_t>(t.tv_sec) * 1000000000LL + t.tv_nsec; 26 } 27 MakeAllocationResident(void * ptr,size_t nbytes,int pagesize)28static __always_inline void MakeAllocationResident(void* ptr, size_t nbytes, int pagesize) { 29 uint8_t* data = reinterpret_cast<uint8_t*>(ptr); 30 for (size_t i = 0; i < nbytes; i += pagesize) { 31 data[i] = 1; 32 } 33 } 34