Seastar
High performance C++ framework for concurrent servers
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conversions.hh
1/*
2 * This file is open source software, licensed to you under the terms
3 * of the Apache License, Version 2.0 (the "License"). See the NOTICE file
4 * distributed with this work for additional information regarding copyright
5 * ownership. You may not use this file except in compliance with the License.
6 *
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing,
12 * software distributed under the License is distributed on an
13 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14 * KIND, either express or implied. See the License for the
15 * specific language governing permissions and limitations
16 * under the License.
17 */
18/*
19 * Copyright (C) 2014 Cloudius Systems, Ltd.
20 */
21
22#pragma once
23
24#ifndef SEASTAR_MODULE
25#include <cstdlib>
26#include <string_view>
27#include <vector>
28#endif
29#include <seastar/util/modules.hh>
30
31namespace seastar {
32
33// Convert a string to a memory size, allowing binary SI
34// suffixes (intentionally, even though SI suffixes are
35// decimal, to follow existing usage). A string matched
36// by following BNF is accetped:
37//
38// memory_size ::= <digit>+ <suffix>? "i"? "B"?
39// suffix ::= ("k" | "K" | "M" | "G" | "T")
40//
41// for instance:
42//
43// "5" -> 5
44// "4k" -> (4 << 10)
45// "8Mi" -> (8 << 20)
46// "7GB" -> (7 << 30)
47// "1TiB" -> (1 << 40)
48// anything else: exception
49SEASTAR_MODULE_EXPORT
50size_t parse_memory_size(std::string_view s);
51
52static inline std::vector<char> string2vector(std::string_view str) {
53 auto v = std::vector<char>(str.begin(), str.end());
54 v.push_back('\0');
55 return v;
56}
57
58}
Seastar API namespace.
Definition: abort_on_ebadf.hh:26