51f85ba032
* Use std::sting instead of char[] in the graph drawing functions. This is the only change to the code. Rest is just styling. * Corrected whole code to follow Allman/GNU coding style, with 2 spaces for each indentation step. * Added license headers to all code files * Added vim modelines to all files. They sit on the first line and enable the following settings: 2 space indentation, tab expansion to spaces, line at 80th column, automatic line breaking on "\ !@*+-;:,./?" characters, automatic line break if line exceeds 80 colums. This should keep the code nice and tidy.
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*
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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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#ifndef BSD_METER_COMMON_H_
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#define BSD_METER_COMMON_H_
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#include <iostream>
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#include <cerrno>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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// Memory Sizes
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#define KILOBYTES(x) ((x)/1024)
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#define MEGABYTES(x) (KILOBYTES((x))/1024)
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#define GIGABYTES(x) (MEGABYTES((x))/1024)
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// CPU percentages stuff
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#define CP_USER 0
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#define CP_NICE 1
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#define CP_SYS 2
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#define CP_INTR 3
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#define CP_IDLE 4
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#define CPUSTATES 5
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#define GETSYSCTL(name, var) getsysctl(name, &(var), sizeof(var))
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static inline void getsysctl( const char *name, void *ptr, size_t len )
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{
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size_t nlen = len;
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if( sysctlbyname( name, ptr, &nlen, NULL, 0 ) == -1 )
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{
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std::cerr << "sysctl(" << name << "...) failed: " << strerror( errno )
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<< std::endl;
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exit( 23 );
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}
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if( nlen != len )
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{
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std::cerr << "sysctl(" << name << "...) expected "
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<< static_cast<unsigned long>( len ) << " bytes, got "
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<< static_cast<unsigned long>( nlen ) << " bytes\n";
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//exit( 23 );
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}
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}
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#endif
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