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.
79 lines
2.0 KiB
C++
79 lines
2.0 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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#include <string>
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#include <sstream>
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#include <mach/mach.h>
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#include <sys/sysctl.h> // for sysctl
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#include "memory.h"
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#include "../luts.h"
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std::string mem_string( bool use_colors )
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{
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std::ostringstream oss;
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// These values are in bytes
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int64_t total_mem;
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int64_t used_mem;
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int64_t unused_mem;
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vm_size_t page_size;
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mach_port_t mach_port;
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mach_msg_type_number_t count;
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vm_statistics_data_t vm_stats;
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// Get total physical memory
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int mib[2];
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mib[0] = CTL_HW;
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mib[1] = HW_MEMSIZE;
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size_t length = sizeof( int64_t );
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sysctl( mib, 2, &total_mem, &length, NULL, 0 );
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mach_port = mach_host_self();
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count = sizeof( vm_stats ) / sizeof( natural_t );
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if( KERN_SUCCESS == host_page_size( mach_port, &page_size ) &&
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KERN_SUCCESS == host_statistics( mach_port, HOST_VM_INFO,
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( host_info_t )&vm_stats, &count ) )
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{
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unused_mem = ( int64_t )vm_stats.free_count * ( int64_t )page_size;
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used_mem = ( ( int64_t )vm_stats.active_count +
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( int64_t )vm_stats.inactive_count + ( int64_t )vm_stats.wire_count
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) * ( int64_t )page_size;
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}
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// To kilobytes
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used_mem /= 1024;
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total_mem /= 1024;
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if( use_colors )
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{
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oss << mem_lut[( 100 * used_mem ) / total_mem];
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}
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oss << used_mem / 1024 << '/' << total_mem / 1024 << "MB";
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if( use_colors )
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{
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oss << "#[fg=default,bg=default]";
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}
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return oss.str();
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}
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