45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#ifndef DORIS_BE_SRC_COMMON_UTIL_PARSE_UTIL_H
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#define DORIS_BE_SRC_COMMON_UTIL_PARSE_UTIL_H
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#include <string>
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#include <boost/cstdint.hpp>
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namespace doris {
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// Utility class for parsing information from strings.
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class ParseUtil {
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public:
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// Parses mem_spec_str and returns the memory size in bytes.
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// Sets *is_percent to indicate whether the given spec is in percent.
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// Accepted formats:
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// '<int>[bB]?' -> bytes (default if no unit given)
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// '<float>[mM]' -> megabytes
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// '<float>[gG]' -> in gigabytes
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// '<int>%' -> in percent of MemInfo::physical_mem()
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// Requires MemInfo to be initialized for the '%' spec to work.
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// Returns 0 if mem_spec_str is empty or '-1'.
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// Returns -1 if parsing failed.
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static int64_t parse_mem_spec(const std::string& mem_spec_str, bool* is_percent);
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};
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}
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#endif
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