使用SDK的PSAPI (Process Status Helper)
中的
输出:
内存使用:1339K/1339K + 356K/356K
中的
BOOL GetProcessMemoryInfo(
HANDLE Process,
PPROCESS_MEMORY_COUNTERS ppsmemCounters,
DWORD cb
);
typedef struct _PROCESS_MEMORY_COUNTERS {
DWORD cb;
DWORD PageFaultCount;
SIZE_T PeakWorkingSetSize; //峰值内存使用
SIZE_T WorkingSetSize; //内存使用
SIZE_T QuotaPeakPagedPoolUsage;
SIZE_T QuotaPagedPoolUsage;
SIZE_T QuotaPeakNonPagedPoolUsage;
SIZE_T QuotaNonPagedPoolUsage;
SIZE_T PagefileUsage; //虚拟内存使用
SIZE_T PeakPagefileUsage; //峰值虚拟内存使用
} PROCESS_MEMORY_COUNTERS,
*PPROCESS_MEMORY_COUNTERS;
#include <iostream>
#include <windows.h>
#include <psapi.h>
#pragma comment(lib,"psapi.lib")
using namespace std;
void showMemoryInfo(void)
{
HANDLE handle=GetCurrentProcess();
PROCESS_MEMORY_COUNTERS pmc;
GetProcessMemoryInfo(handle,&pmc,sizeof(pmc));
cout<<"内存使用:"<<pmc.WorkingSetSize/1000 <<"K/"<<pmc.PeakWorkingSetSize/1000<<"K + "<<pmc.PagefileUsage/1000 <<"K/"<<pmc.PeakPagefileUsage/1000 <<"K"<<endl;
}
int main(int argc,char* argv)
{
showMemoryInfo();
cout<<"回收所有可回收的内存"<<endl;
EmptyWorkingSet(GetCurrentProcess());
showMemoryInfo();
cout<<"开始动态分配内存"<<endl;
char* buf[5];
for(int i=0;i<sizeof(buf)/sizeof(char*);i++)
{
buf[i]=new char[102400];
showMemoryInfo();
}
cout<<"开始释放内存"<<endl;
for(int i=0;i<sizeof(buf)/sizeof(char*);i++)
{
delete buf[i];
buf[i]=NULL;
showMemoryInfo();
}
cout<<"回收所有可回收的内存"<<endl;
EmptyWorkingSet(GetCurrentProcess());
showMemoryInfo();
return 0;
}
输出:
内存使用:1339K/1339K + 356K/356K