Comment utiliser GetProcessMemoryInfo en C++?
j'essaie d'utiliser la fonction GetProcessMemoryInfopsapi.h à l'intérieur d'une application C++ sur Windows 7 32-bit.
j'ai suivi un tutoriel et j'ai fait quelque chose comme:
PPROCESS_MEMORY_COUNTERS pMemCountr;
pMemCountr = new PROCESS_MEMORY_COUNTERS();
bool result = GetProcessMemoryInfo(GetCurrentProcess(),
pMemCountr,
sizeof(PPROCESS_MEMORY_COUNTERS));
le problème est que j'obtiens toujours "false" de l'exécution du GetProcessMemoryInfo() méthode. Ce que je fais mal?
3 réponses
Le problème est
sizeof(PPROCESS_MEMORY_COUNTERS)
donne la taille de PPROCESS_MEMORY_COUNTERS est un PROCESS_MEMORY_COUNTERS* tapez pointeur (notez double P au début).
Ce que vous voulez, c'est
sizeof(PROCESS_MEMORY_COUNTERS)
aussi vous serez beaucoup mieux sans new ici:
PROCESS_MEMORY_COUNTERS memCounter;
BOOL result = GetProcessMemoryInfo(GetCurrentProcess(),
&memCounter,
sizeof( memCounter ));
changement de taille (PPROCESS_MEMORY_COUNTERS) en taille (PROCESS_MEMORY_COUNTERS)
on MSDN:
BOOL WINAPI GetProcessMemoryInfo( processus de manipulation, PPROCESS_MEMORY_COUNTERS ppsmemCounters, DWORD cb );
Exemple:
HANDLE hProcess;
PROCESS_MEMORY_COUNTERS pmc;
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( "\tWorkingSetSize: 0x%08X - %u\n", pmc.WorkingSetSize,
pmc.WorkingSetSize / 1024);
printf( "\tQuotaPeakPagedPoolUsage: 0x%08X - %u\n",
pmc.QuotaPeakPagedPoolUsage , pmc.QuotaPeakPagedPoolUsage / 1024);
printf( "\tQuotaPagedPoolUsage: 0x%08X - %u\n", pmc.QuotaPagedPoolUsage,
pmc.QuotaPagedPoolUsage / 1024);
printf( "\tQuotaPeakNonPagedPoolUsage: 0x%08X - %u\n",
pmc.QuotaPeakNonPagedPoolUsage,pmc.QuotaPeakNonPagedPoolUsage / 1024 );
printf( "\tQuotaNonPagedPoolUsage:0x%08X-%u\n",pmc.QuotaNonPagedPoolUsage , pmc.QuotaNonPagedPoolUsage / 1024);
printf( "\tPagefileUsage: 0x%08X - %u\n", pmc.PagefileUsage, pmc.PagefileUsage/1024 );
printf( "\tPeakPagefileUsage: 0x%08X - %u\n", pmc.PeakPagefileUsage, pmc.PeakPagefileUsage/1024 );
printf( "\tcb: 0x%08X - %u\n", pmc.cb , pmc.cb / 1024);
}
CloseHandle(hProcess);
Ou Vous pouvez afficher l'intégralité du code de ici