87cc9b1ce8
All the platforms were using identical logic based on getloadavg() function to get the load avg stats (except linux, which was using sinfo struct, but can use getloadavg() function). I've noticed this while working on NetBSD port. Also: fixed a typo on freebsd.
76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
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*
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* Copyright 2012 Matthew McCormick
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* Copyright 2013 Justin Crawford <Justasic@gmail.com>
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* Copyright 2015 Pawel 'l0ner' Soltys
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Based on: github.com/freebsd/freebsd/blob/master/usr.bin/top/machine.c
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// Based on: Apple.cpp for load_string/mem_string and apple's documentation
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#include <sstream>
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#include <string>
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#include <stdlib.h> // getloadavg()
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#include <cmath> // floorf()
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#include <sys/types.h>
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#include "cpu.h"
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#include "load.h"
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#include "luts.h"
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// Load Averages
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std::string load_string( bool use_colors = false )
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{
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std::stringstream ss;
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// Get only 3 load averages
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const int nelem = 3;
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double averages[nelem];
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// based on: opensource.apple.com/source/Libc/Libc-262/gen/getloadavg.c
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if( getloadavg( averages, nelem ) < 0 )
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{
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ss << "0.00 0.00 0.00"; // couldn't get averages.
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}
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else
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{
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if( use_colors )
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{
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unsigned load_percent = static_cast<unsigned int>( averages[0] /
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get_cpu_count() * 0.5f * 100.0f );
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if( load_percent > 100 )
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{
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load_percent = 100;
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}
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ss << load_lut[load_percent];
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}
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for( int i = 0; i < nelem; ++i )
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{
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// Round to nearest, make sure this is only a 0.00 value not a 0.0000
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float avg = floorf( static_cast<float>( averages[i] ) * 100 + 0.5 ) / 100;
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ss << avg << " ";
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}
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if( use_colors )
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{
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ss << "#[fg=default,bg=default]";
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}
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}
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return ss.str();
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}
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