| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include "utils/rand.h" |
| #include <random> |
| |
| namespace dsn { |
| namespace rand { |
| |
| thread_local std::ranlux48_base g_thread_local_rng(std::random_device{}()); |
| |
| /*extern*/ uint64_t next_u64(uint64_t min, uint64_t max) |
| { |
| return std::uniform_int_distribution<uint64_t>(min, max)(g_thread_local_rng); |
| } |
| |
| /*extern*/ void reseed_thread_local_rng(uint64_t seed) { g_thread_local_rng.seed(seed); } |
| |
| } // namespace rand |
| } // namespace dsn |
