#import <mach/mach.h>
vm_size_t getUsedMemory() {
task_basic_info_data_t info;
mach_msg_type_number_t size = sizeof(info);
kern_return_t kerr = task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)&info, &size);
if (kerr == KERN_SUCCESS) {
return info.resident_size;
} else {
return 0;
}
}
vm_size_t getFreeMemory() {
mach_port_t host = mach_host_self();
mach_msg_type_number_t size = sizeof(vm_statistics_data_t) / sizeof(integer_t);
vm_size_t pagesize;
vm_statistics_data_t vmstat;
host_page_size(host, &pagesize);
host_statistics(host, HOST_VM_INFO, (host_info_t) &vmstat, &size);
return vmstat.free_count * pagesize;
}
NSInteger usedMemory = getUsedMemory();
NSInteger freeMemory = getFreeMemory();
NSLog(@"user memory: %zd", usedMemory);
NSLog(@"free memory: %zd", freeMemory);
