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February 18, 2012

January 08, 2012

ios memory checking




void checkMemory()
{
    mach_port_t host_port;
    mach_msg_type_number_t host_size;
    vm_size_t pagesize;
    
    host_port = mach_host_self();
    host_size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
    host_page_size(host_port, &pagesize);        
    
    vm_statistics_data_t vm_stat;
    
    if (host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size) != KERN_SUCCESS)
        NSLog(@"Failed to fetch vm statistics");

    natural_t mem_real = NSRealMemoryAvailable();
    natural_t mem_free = vm_stat.free_count * pagesize;
    natural_t mem_used = (vm_stat.active_count +
                          vm_stat.inactive_count +
                          vm_stat.wire_count) * pagesize;
    
    natural_t mem_total = mem_used + mem_free;
    printf("\n");
    printf("**  MEMORY  **\n");
    printf("Real : %03u,%03u,%03u  %3umb\n",mem_real/1000/1000, mem_real/1000%1000, mem_real%1000, mem_real/1024/1024 );
    printf("Total: %03u,%03u,%03u  %3umb\n",mem_total/1000/1000,mem_total/1000%1000,mem_total%1000,mem_total/1024/1024);
    printf("Free : %03u,%03u,%03u  %3umb\n",mem_free/1000/1000, mem_free/1000%1000, mem_free%1000, mem_free/1024/1024 );
    printf("Used : %03u,%03u,%03u  %3umb\n",mem_used/1000/1000, mem_used/1000%1000, mem_used%1000, mem_used/1024/1024 );
    
    printf("\n");
}