| /** |
| * 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 "JavaStringHash.h" |
| #include <limits> |
| |
| namespace pulsar { |
| |
| JavaStringHash::JavaStringHash() {} |
| |
| int32_t JavaStringHash::makeHash(const std::string& key) { |
| uint64_t len = key.length(); |
| const char* val = key.c_str(); |
| uint32_t hash = 0; |
| |
| for (int i = 0; i < len; i++) { |
| hash = 31 * hash + val[i]; |
| } |
| |
| hash &= std::numeric_limits<int32_t>::max(); |
| |
| return hash; |
| } |
| |
| } // namespace pulsar |