1 /* 2 * Copyright (C) 2017 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 "include/random_generator.h" 18 19 namespace wifi_offload_test { 20 namespace { 21 /* use default seed (vs. random seed) to reproduce the same sequence on 22 * different runs */ 23 constexpr bool kUseDefaultSeed = true; 24 } // namespace 25 RandomGenerator()26RandomGenerator::RandomGenerator() { 27 if (kUseDefaultSeed) { 28 initial_seed_ = random_engine_.default_seed; 29 } else { 30 /* Used to obtain a seed for the random number engine */ 31 std::random_device random_device; 32 // save the seed for future resets 33 initial_seed_ = random_device(); 34 } 35 36 Reset(); 37 } 38 Reset()39void RandomGenerator::Reset() { 40 random_engine_.seed(initial_seed_); 41 uniform_distribution_.reset(); 42 } 43 44 } // namespace wifi_offload_test 45