92 lines
2.5 KiB
C++
92 lines
2.5 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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#include "conversions.h"
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std::string mem_string( bool use_colors, int mode )
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{
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std::ostringstream oss;
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// These values are in bytes
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u_int64_t total_mem;
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float used_mem;
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float percentage_mem;
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//u_int64_t unused_mem;
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vm_size_t page_size;
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vm_statistics_data_t vm_stats;
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// Get total physical memory
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int mib[] = { CTL_HW, HW_MEMSIZE };
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size_t length = sizeof( total_mem );
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sysctl( mib, 2, &total_mem, &length, NULL, 0 );
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mach_port_t mach_port = mach_host_self();
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mach_msg_type_number_t 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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{
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//unused_mem = static_cast<u_int64_t>( vm_stats.free_count * page_size );
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used_mem = static_cast<float>(
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( vm_stats.active_count + vm_stats.wire_count ) * page_size);
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}
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if( use_colors )
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{
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oss << mem_lut[( 100 * static_cast<u_int64_t>(used_mem) ) / total_mem];
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}
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percentage_mem = static_cast<float>(used_mem) / static_cast<float>(total_mem) * 100.0;
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oss.precision( 2 );
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oss.setf( std::ios::fixed | std::ios::right );
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if( mode == 0 ) {
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oss << convert_unit( used_mem, MEGABYTES ) << '/'
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<< convert_unit( total_mem, MEGABYTES ) << "MB";
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} else if ( mode == 1 ) {
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float free_mem = total_mem - used_mem;
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if( free_mem < 1 ) {
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oss << convert_unit( free_mem, MEGABYTES ) << "MB";
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} else {
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oss << convert_unit( free_mem, GIGABYTES ) << "GB";
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}
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} else {
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oss << percentage_mem << '%';
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}
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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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