//获取当前设备可用内存及所占内存的头文件#import
#import <sys/sysctl.h>
#import <mach/mach.h>
//
获取当前设备可用内存(单位：MB）
- (double)availableMemory
{
vm_statistics_data_tvmStats;
mach_msg_type_number_tinfoCount =HOST_VM_INFO_COUNT;
kern_return_tkernReturn =host_statistics(mach_host_self(),
HOST_VM_INFO,
(host_info_t)&vmStats,
&infoCount);
if(kernReturn !=KERN_SUCCESS) {
returnNSNotFound;
}
return((vm_page_size*vmStats.free_count) /1024.0) /1024.0;
}
//获取当前任务所占用的内存（单位：MB）
- (double)usedMemory
{
task_basic_info_data_ttaskInfo;
mach_msg_type_number_tinfoCount =TASK_BASIC_INFO_COUNT;
kern_return_tkernReturn =task_info(mach_task_self(),
TASK_BASIC_INFO,
(task_info_t)&taskInfo,
&infoCount);
if(kernReturn !=KERN_SUCCESS
) {
returnNSNotFound;
}
returntaskInfo.resident_size/1024.0/1024.0;
}
