使用SetPriorityClass让进程退出之后删除自己

VOID
DeleteMyself()
{
TCHAR				tchCmd[MAX_PATH]		= {0};
TCHAR				tchProcPath[MAX_PATH]	= {0};
STARTUPINFO			StartupInfo				= {0};
PROCESS_INFORMATION	ProcInfo				= {0};

__try
{
if (!GetEnvironmentVariable(_T("COMSPEC"), tchCmd, MAX_PATH))
{
printf("[DeleteMyself] : GetEnvironmentVariable failed. (%d) \n", GetLastError());
__leave;
}

if (!GetModuleFileName(NULL, tchProcPath, MAX_PATH))
{
printf("[DeleteMyself] : GetModuleFileName failed. (%d) \n", GetLastError());
__leave;
}

_tcscat_s(tchCmd, MAX_PATH, _T(" /c del \""));
_tcscat_s(tchCmd, MAX_PATH, tchProcPath);
_tcscat_s(tchCmd, MAX_PATH, _T("\""));

// 设置本程序进程的执行级别为实时执行，这本程序马上获取CPU执行权，快速退出。
if (!SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS))
{
printf("[DeleteMyself] : SetPriorityClass failed. (%d) \n", GetLastError());
__leave;
}

// 		if (!SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL))
// 		{
// 			printf("[DeleteMyself] : SetThreadPriority failed. (%d) \n", GetLastError());
// 			__leave;
// 		}

StartupInfo.cb = sizeof(STARTUPINFO);
StartupInfo.dwFlags = STARTF_USESHOWWINDOW;
StartupInfo.wShowWindow = SW_HIDE;

if (!CreateProcess(NULL, tchCmd, NULL, NULL, FALSE, CREATE_SUSPENDED | CREATE_NO_WINDOW | DETACHED_PROCESS, NULL, NULL, &StartupInfo, &ProcInfo))
{
printf("[DeleteMyself] : CreateProcess failed. (%d) \n", GetLastError());
__leave;
}

// 设置命令行进程的执行级别为空闲执行,这使本程序有足够的时间从内存中退出。
if (!SetPriorityClass(ProcInfo.hProcess, IDLE_PRIORITY_CLASS))
{
printf("[DeleteMyself] : SetPriorityClass failed. (%d) \n", GetLastError());
__leave;
}

// 		if (!SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_IDLE))
// 		{
// 			printf("[DeleteMyself] : SetThreadPriority failed. (%d) \n", GetLastError());
// 			__leave;
// 		}

if (ResumeThread(ProcInfo.hThread) == -1)
{
printf("[DeleteMyself] : ResumeThread failed. (%d) \n", GetLastError());
__leave;
}
}
__finally
{
if (ProcInfo.hProcess)
CloseHandle(ProcInfo.hProcess);

if (ProcInfo.hThread)
CloseHandle(ProcInfo.hThread);
}

ExitProcess(ERROR_SUCCESS);

return ;
}