SystemInfo.m

/*
 * Copyright (C) 2016 Veertu Inc,
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 or
 * (at your option) version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include <sys/types.h>
#include <sys/sysctl.h>
#import "SystemInfo.h"

@implementation SystemInfo

+ (uint64_t)freeDiskspace
{
    uint64_t totalSpace = 0;
    uint64_t totalFreeSpace = 0;
    
    __autoreleasing NSError *error = nil;
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths lastObject] error: &error];
    
    if (dictionary) {
        NSNumber *fileSystemSizeInBytes = [dictionary objectForKey: NSFileSystemSize];
        NSNumber *freeFileSystemSizeInBytes = [dictionary objectForKey:NSFileSystemFreeSize];
        totalSpace = [fileSystemSizeInBytes unsignedLongLongValue];
        totalFreeSpace = [freeFileSystemSizeInBytes unsignedLongLongValue];
        NSLog(@"Memory Capacity of %llu MiB with %llu MiB Free memory available.", ((totalSpace/1024ll)/1024ll), ((totalFreeSpace/1024ll)/1024ll));
    } else {
        NSLog(@"Error Obtaining System Memory Info: Domain = %@, Code = %ld", [error domain], [error code]);
    }
    
    return totalFreeSpace;
}

+ (int) getCpuTotal
{
    int size = 0;
    size_t len = sizeof( size );
    if ( sysctlbyname("hw.ncpu", &size, &len, NULL, 0 ) == 0 )
        return size;
    return -1;
}

+ (int) getCpuCores
{
    int size = 0;
    size_t len = sizeof( size );
    if ( sysctlbyname("hw.physicalcpu", &size, &len, NULL, 0 ) == 0 )
        return size;
    return -1;
}

@end