d3eb9e3187
instead of using hard coded divisions to calculate ram stats it's better to use macros defined in config.h. BSD port was doing this already, using macros defined in it's common.h header. I pulled those macros out and applied them to all platforms. File version.h.in got renamed into config.h.in since it doesn't caontain only the version anymore.
60 lines
1.7 KiB
C++
60 lines
1.7 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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// 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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