ios打印程序使用内存、真机（模拟器）剩余内存办法

ios打印程序使用内存、真机（模拟器）剩余内存办法

// 计算程序使用内存、剩余内存

#include <sys/sysctl.h>

#include <mach/mach.h>

// 计算程序使用内存
- (double)usedMemory
{

task_basic_info_data_t taskInfo;

mach_msg_type_number_t infoCount =
TASK_BASIC_INFO_COUNT;

kern_return_t kernReturn =
task_info(mach_task_self(),

TASK_BASIC_INFO, (task_info_t)&taskInfo, &infoCount);

if(kernReturn != KERN_SUCCESS) {

return NSNotFound;
}

return taskInfo.resident_size /
1024.0 /
1024.0;
}

// 计算真机、模拟器剩余内存
- (double)availableMemory

{

vm_statistics_data_t vmStats;

mach_msg_type_number_t infoCount =
HOST_VM_INFO_COUNT;

kern_return_t kernReturn

= host_statistics(mach_host_self(),

HOST_VM_INFO,
(host_info_t)&vmStats,
&infoCount);

if(kernReturn != KERN_SUCCESS) {

return NSNotFound;
}

return ((vm_page_size * vmStats.free_count) /
1024.0) /
1024.0;
}