如何计算并显示一个程序的运行时间，和内存占用量，windous&linux环境下

[complicated]

我每写一个练习程序的时候总是想知道它运行了多长时间，占用了多少内存，又没有人知道怎么实现，谢谢了！

[飞哥]

占多少内存可以通过API来实现
GetProcessMemoryInfo
－－－－－－】
GetProcessMemoryInfo

The GetProcessMemoryInfo function retrieves information about the memory usage of the specified process in the PROCESS_MEMORY_COUNTERS structure.


BOOL GetProcessMemoryInfo(
HANDLE Process,
PPROCESS_MEMORY_COUNTERS ppsmemCounters,
DWORD cb
);

Parameters
Process
[in] Handle to the process.
ppsmemCounters
[out] Pointer to the PROCESS_MEMORY_COUNTERS structure that receives information about the memory usage of the process.
cb
[in] Size of the PROCESS_MEMORY_COUNTERS structure, in bytes.
Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

－－－－－－－－－－】
#include <windows.h>
#include <stdio.h>
#include "psapi.h"

void PrintMemoryInfo( DWORD processID )
{
HANDLE hProcess;
PROCESS_MEMORY_COUNTERS pmc;

// Print the process identifier.

printf( "\nProcess ID: %u\n", processID );

// Print information about the memory usage of the process.

hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, processID );
if (NULL == hProcess)
return;

if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) )
{
printf( "\tPageFaultCount: 0x%08X\n", pmc.PageFaultCount );
printf( "\tPeakWorkingSetSize: 0x%08X\n",
pmc.PeakWorkingSetSize );
printf( "\tWorkingSetSize: 0x%08X\n", pmc.WorkingSetSize );
printf( "\tQuotaPeakPagedPoolUsage: 0x%08X\n",
pmc.QuotaPeakPagedPoolUsage );
printf( "\tQuotaPagedPoolUsage: 0x%08X\n",
pmc.QuotaPagedPoolUsage );
printf( "\tQuotaPeakNonPagedPoolUsage: 0x%08X\n",
pmc.QuotaPeakNonPagedPoolUsage );
printf( "\tQuotaNonPagedPoolUsage: 0x%08X\n",
pmc.QuotaNonPagedPoolUsage );
printf( "\tPagefileUsage: 0x%08X\n", pmc.PagefileUsage );
printf( "\tPeakPagefileUsage: 0x%08X\n",
pmc.PeakPagefileUsage );
}

CloseHandle( hProcess );
}

void main( )
{
// Get the list of process identifiers.

DWORD aProcesses[1024], cbNeeded, cProcesses;
unsigned int i;

if ( !EnumProcesses( aProcesses, sizeof(aProcesses), &cbNeeded ) )
return;

// Calculate how many process identifiers were returned.

cProcesses = cbNeeded / sizeof(DWORD);

// Print the memory usage for each process

for ( i = 0; i < cProcesses; i++ )
PrintMemoryInfo( aProcesses[i] );
}

[飞哥]

运行多长时间，这个狠复杂
论坛上搜搜，前两天回过这个帖子