| // 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. |
| |
| #ifndef IMPALA_UTIL_PARSE_UTIL_H |
| #define IMPALA_UTIL_PARSE_UTIL_H |
| |
| #include <string> |
| #include <boost/cstdint.hpp> |
| |
| namespace impala { |
| |
| /// Utility class for parsing information from strings. |
| class ParseUtil { |
| public: |
| /// Parses mem_spec_str and returns the memory size in bytes. |
| /// Sets *is_percent to indicate whether the given spec is in percent. |
| /// Accepted formats: |
| /// '<int>[bB]?' -> bytes (default if no unit given) |
| /// '<float>[kK(bB)]' -> kilobytes |
| /// '<float>[mM(bB)]' -> megabytes |
| /// '<float>[gG(bB)]' -> in gigabytes |
| /// '<int>%' -> in percent of relative_reference |
| /// 'relative_reference' -> value used to compute the percentage value, |
| /// typically MemInfo::physical_mem() |
| /// Requires MemInfo to be initialized for the '%' spec to work. |
| /// Returns 0 if mem_spec_str is empty or '-1'. |
| /// Returns -1 if parsing failed. |
| static int64_t ParseMemSpec(const std::string& mem_spec_str, |
| bool* is_percent, int64_t relative_reference); |
| }; |
| |
| } |
| |
| #endif |