cpp
复制代码
#include <iostream>
#include <chrono>
#include <thread>
#include <mach/mach.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h>
#include <mach/mach.h>
#include <mach/mach_init.h>
#include <mach/mach_host.h>
#include <mach/mach_port.h>
#include <mach/mach_traps.h>
#include <mach/task_info.h>
#include <mach/thread_info.h>
#include <mach/thread_act.h>
#include <mach/vm_region.h>
#include <mach/vm_map.h>
#include <mach/task.h>
#include <mach/shared_region.h>
#include <unistd.h>
using namespace std;
enum BYTE_UNITS
{
BYTES = 0,
KILOBYTES = 1,
MEGABYTES = 2,
GIGABYTES = 3
};
template <class T>
T convert_unit(T num, int to, int from = BYTES)
{
for (; from < to; from++)
{
num /= 1024;
}
return num;
}
// 获取mac系统下总物理内存、所使用内存
void getMemUsePercentage()
{
u_int64_t total_mem = 0;
float used_mem = 0;
vm_size_t page_size;
vm_statistics_data_t vm_stats;
// Get total physical memory
int mib[] = { CTL_HW, HW_MEMSIZE };
size_t length = sizeof(total_mem);
sysctl(mib, 2, &total_mem, &length, NULL, 0);
mach_port_t mach_port = mach_host_self();
mach_msg_type_number_t count = sizeof(vm_stats) / sizeof(natural_t);
if (KERN_SUCCESS == host_page_size(mach_port, &page_size) &&
KERN_SUCCESS == host_statistics(mach_port, HOST_VM_INFO,
(host_info_t)&vm_stats, &count)
)
{
used_mem = static_cast<float>(
(vm_stats.active_count + vm_stats.wire_count) * page_size);
}
uint usedMem = convert_unit(static_cast<float>(used_mem), MEGABYTES);
uint totalMem = convert_unit(static_cast<float>(total_mem), MEGABYTES);
cout << "\nusedMem:" << usedMem << endl;
cout << "totalMem:" << totalMem << endl;
}
// 获取mac系统下当前进程使用内存
int runGetDynamicProcInfo(unsigned int& m_nMemUsed)
{
unsigned int task = 0;
int error = 0;
unsigned int count = 0;
struct task_basic_info ti;
error = task_for_pid(mach_task_self(), getpid(), &task);
if (error != KERN_SUCCESS)
{
m_nMemUsed = 0;
return 0;
}
count = TASK_BASIC_INFO_COUNT;
error = task_info(task, TASK_BASIC_INFO, (task_info_t)&ti, &count);
if (error != KERN_SUCCESS)
{
m_nMemUsed = 0;
return 0;
}
vm_region_basic_info_data_64_t b_info;
unsigned long address = SHARED_REGION_BASE_PPC;
unsigned long size = 0;
unsigned int object_name = 0;
count = VM_REGION_BASIC_INFO_COUNT_64;
error = vm_region_64(task, &address, &size, VM_REGION_BASIC_INFO, (vm_region_info_t)&b_info, &count, &object_name);
if (error == KERN_SUCCESS)
{
if (b_info.reserved && size == (SHARED_REGION_NESTING_SIZE_PPC) &&
ti.virtual_size > (SHARED_REGION_NESTING_SIZE_PPC + SHARED_REGION_NESTING_MIN_PPC))
{
ti.virtual_size -= (SHARED_REGION_NESTING_SIZE_PPC + SHARED_REGION_NESTING_MIN_PPC);
}
}
m_nMemUsed = (ti.resident_size / 1024 / 1024);
std::cout << "m_nMemUsed:" << m_nMemUsed << std::endl;
return 0;
}
int main()
{
unsigned int m_usfmem = 0;
while (1)
{
runGetDynamicProcInfo(m_usfmem);
getMemUsePercentage();
std::this_thread::sleep_for(std::chrono::seconds(1));
}
return 0;
}