65 lines
2.3 KiB
C++
65 lines
2.3 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 "conversions.h"
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void mem_status( MemoryStatus & status )
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{
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// These values are in bytes
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u_int64_t total_mem;
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// float app_mem = 0.0f;
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// float cached_file_mem = 0.0f;
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float available_mem = 0.0f;
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float percentage_mem;
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float free_mem;
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float free_mem_in_gigabytes; // used to check if free mem < 1 GB
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//u_int64_t unused_mem;
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vm_size_t page_size;
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vm_statistics64_data_t vm_stats; // Use 64-bit VM statistics
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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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// Use HOST_VM_INFO64_COUNT as the count for vm_statistics64_data_t
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mach_msg_type_number_t count = HOST_VM_INFO64_COUNT;
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if( KERN_SUCCESS == host_page_size( mach_port, &page_size ) &&
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KERN_SUCCESS == host_statistics64( mach_port, HOST_VM_INFO64,
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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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// app_mem = static_cast<float>(( vm_stats.internal_page_count - vm_stats.purgeable_count ) * page_size );
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// cached_file_mem = static_cast<float>(( vm_stats.purgeable_count + vm_stats.external_page_count ) * page_size );
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available_mem = static_cast<float>(( vm_stats.free_count + vm_stats.external_page_count - vm_stats.speculative_count ) * page_size );
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}
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status.used_mem = convert_unit(static_cast< float >(total_mem - available_mem ), MEGABYTES );
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status.total_mem = convert_unit(static_cast< float >( total_mem ), MEGABYTES );
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}
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