Libosmium
2.20.0
Fast and flexible C++ library for working with OpenStreetMap data
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include
osmium
util
memory.hpp
Go to the documentation of this file.
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#ifndef OSMIUM_UTIL_MEMORY_HPP
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#define OSMIUM_UTIL_MEMORY_HPP
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/*
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This file is part of Osmium (https://osmcode.org/libosmium).
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Copyright 2013-2023 Jochen Topf <jochen@topf.org> and others (see README).
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <cstdlib>
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#include <fstream>
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#include <string>
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#include <
osmium/util/misc.hpp
>
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namespace
osmium
{
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class
MemoryUsage
{
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int64_t
m_current
= 0;
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int64_t
m_peak
= 0;
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#ifdef __linux__
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static
int64_t
parse_number
(
const
std::string& line) {
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const
auto
f = line.find_first_of(
"0123456789"
);
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const
auto
l = line.find_last_of(
"0123456789"
);
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return
osmium::detail::str_to_int<int64_t>(line.substr(f, l - f + 1).c_str());
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}
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#endif
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public
:
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MemoryUsage
() {
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#ifdef __linux__
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static
const
char
* filename =
"/proc/self/status"
;
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std::ifstream status_file(filename);
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if
(status_file.is_open()) {
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std::string line;
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while
(!status_file.eof()) {
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std::getline(status_file, line);
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if
(line.substr(0, 6) ==
"VmPeak"
) {
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m_peak
=
parse_number
(line);
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}
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if
(line.substr(0, 6) ==
"VmSize"
) {
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m_current
=
parse_number
(line);
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}
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}
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}
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#endif
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}
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int
current
()
const
{
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return
static_cast<
int
>
(
m_current
/ 1024);
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}
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int
peak
()
const
{
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return
static_cast<
int
>
(
m_peak
/ 1024);
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}
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};
// class MemoryUsage
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}
// namespace osmium
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#endif
// OSMIUM_UTIL_MEMORY_HPP
osmium::MemoryUsage
Definition
memory.hpp:44
osmium::MemoryUsage::MemoryUsage
MemoryUsage()
Definition
memory.hpp:66
osmium::MemoryUsage::m_peak
int64_t m_peak
Definition
memory.hpp:47
osmium::MemoryUsage::m_current
int64_t m_current
Definition
memory.hpp:46
osmium::MemoryUsage::peak
int peak() const
Return peak memory usage in MBytes.
Definition
memory.hpp:92
osmium::MemoryUsage::parse_number
static int64_t parse_number(const std::string &line)
Definition
memory.hpp:50
osmium::MemoryUsage::current
int current() const
Return current memory usage in MBytes.
Definition
memory.hpp:87
misc.hpp
osmium
Namespace for everything in the Osmium library.
Definition
assembler.hpp:53
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