PJOBOBJECT_BASIC_PROCESS_ID_LIST CJobObject::CreatePidList() const{
DWORD dwMaxEntries = 8;
JOBOBJECT_BASIC_PROCESS_ID_LIST *Structure;
DestroyPidList();
do {
BOOL bRet;
if (m_dwBuffer) {
dwMaxEntries *= 2;
delete [] m_dwBuffer;
m_dwBuffer = NULL;
}
m_dwBuffer = new DWORD[dwMaxEntries + 2];
Structure = (JOBOBJECT_BASIC_PROCESS_ID_LIST*)m_dwBuffer;
memset(m_dwBuffer, 0, sizeof(m_dwBuffer));
bRet = QueryInformationJobObject(GetHandle(), JobObjectBasicProcessIdList,
m_dwBuffer, sizeof(DWORD) * (dwMaxEntries + 2), NULL);
if (bRet == 0 && GetLastError() != ERROR_MORE_DATA) {
delete [] m_dwBuffer;
throw CCodineException(CError::GetErrorMessage(GetLastError()), __FILE__, __LINE__);
}
} while (Structure->NumberOfAssignedProcesses > Structure->NumberOfProcessIdsInList);
return Structure;
}
LONGLONG Job::infoMemoryUsagePeak()
{
JOBOBJECT_EXTENDED_LIMIT_INFORMATION info;
tryApi(_T("QueryInformationJobObject"),
QueryInformationJobObject(hJob,JobObjectExtendedLimitInformation,&info,sizeof info,NULL) != 0);
return info.PeakJobMemoryUsed;
}
bool WindowsJob::queryInformation(JOBOBJECTINFOCLASS informationClass,
LPVOID lpInformation,
DWORD cbInformationLength,
LPDWORD lpReturnLength)
{
return !!QueryInformationJobObject(jobHandle_, informationClass, lpInformation,
cbInformationLength, lpReturnLength);
}
const JOBOBJECT_BASIC_AND_IO_ACCOUNTING_INFORMATION& CJobObject::GetExtendedUsageInfo() const{
BOOL bRet;
bRet = QueryInformationJobObject(GetHandle(), JobObjectBasicAndIoAccountingInformation,
(PVOID) &m_UsageInfo, sizeof(JOBOBJECT_BASIC_AND_IO_ACCOUNTING_INFORMATION), NULL);
if (bRet == 0) {
throw CCodineException(CError::GetErrorMessage(GetLastError()), __FILE__, __LINE__);
}
return m_UsageInfo;
}
const JOBOBJECT_EXTENDED_LIMIT_INFORMATION& CJobObject::GetExtendedLimit() const {
BOOL bRet;
bRet = QueryInformationJobObject(GetHandle(), JobObjectExtendedLimitInformation,
(PVOID) &m_Limit, sizeof(JOBOBJECT_EXTENDED_LIMIT_INFORMATION), NULL);
if (bRet == 0) {
throw CCodineException(CError::GetErrorMessage(GetLastError()), __FILE__, __LINE__);
}
return m_Limit;
}
DWORD JobbedProcessManager::ShockerProc() {
JOBOBJECT_EXTENDED_LIMIT_INFORMATION extLimit;
LARGE_INTEGER qpc;
DWORD result;
do {
QueryPerformanceCounter(&qpc);
execution_time = (qpc.QuadPart - liStart.QuadPart) * qpc_freq;
if (time_limit && execution_time > time_limit) {
TerminateProcess(hProcess, 0xDEADBEEF);
tle_ = true;
WaitForSingleObject(hProcess, INFINITE);
}
QueryInformationJobObject(hJob, JobObjectExtendedLimitInformation, &extLimit, sizeof extLimit, nullptr);
memory_ = extLimit.PeakJobMemoryUsed;
mle_ |= memory_limit && memory_ > memory_limit;
Sleep(100);
result = WaitForSingleObject(hProcess, 0);
} while (!terminate_shocker && result == WAIT_TIMEOUT);
return 0;
}
BOOL ProcessJob()
{
BOOL foundProblem = FALSE;
DWORD jobProcessStructSize = sizeof(JOBOBJECT_BASIC_PROCESS_ID_LIST) + sizeof(ULONG_PTR) * 1024;
JOBOBJECT_BASIC_PROCESS_ID_LIST* jobProcessIdList = static_cast<JOBOBJECT_BASIC_PROCESS_ID_LIST*>(malloc(jobProcessStructSize));
if (jobProcessIdList) {
SecureZeroMemory(jobProcessIdList, jobProcessStructSize);
jobProcessIdList->NumberOfProcessIdsInList = 1024;
if (QueryInformationJobObject(NULL, JobObjectBasicProcessIdList, jobProcessIdList, jobProcessStructSize, NULL))
{
int ok_processes = 0;
for (DWORD i = 0; i < jobProcessIdList->NumberOfAssignedProcesses; i++)
{
ULONG_PTR processId = jobProcessIdList->ProcessIdList[i];
// is this the current process? if so that's ok
if (processId == (ULONG_PTR)GetCurrentProcessId())
{
ok_processes++;
}
else
{
// find the process name for this job process
HANDLE hJobProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, (DWORD)processId);
if (hJobProcess != NULL)
{
const int processNameBufferSize = 4096;
LPTSTR processName = static_cast<LPTSTR>(malloc(sizeof(TCHAR) * processNameBufferSize));
if (processName) {
SecureZeroMemory(processName, sizeof(TCHAR) * processNameBufferSize);
if (GetProcessImageFileName(hJobProcess, processName, processNameBufferSize) > 0)
{
String pnStr(processName);
// ignore conhost.exe (this hosts the al-khaser executable in a console)
if (pnStr.find(String(L"\\Windows\\System32\\conhost.exe")) != std::string::npos)
{
ok_processes++;
}
}
free(processName);
}
CloseHandle(hJobProcess);
}
}
}
// if we found other processes in the job other than the current process and conhost, report a problem
foundProblem = ok_processes != jobProcessIdList->NumberOfAssignedProcesses;
}
free(jobProcessIdList);
}
return foundProblem;
}
/**
* @brief
* Internal session memory usage decoding routine.
* Accepts a job pointer. Returns the sum of all memory
* consumed for all tasks executed by the job, in kilo bytes.
*
* NOTE: To retrieve a handle to any process in the system,
* the calling process should have a privilege "SeDebugPrivilege".
* A Win32 API OpenProcess() can be used in a calling process
* to obtain any desired process handle in the system.
*
* In PBS, ena_privilege() function can be used to enable
* SeDebugPrivilege for calling process. For pbs_mom process,
* ena_privilege() has been used in it's main_thread() function.
*
* @param[in] pjob - pointer to job
*
* @return u_Long
* @retval 0 - failure
* @retval memory usage of all the processes of a job - failure
*/
static u_Long
mem_sum(job *pjob)
{
u_Long mem = 0;
int nps = 0;
DWORD i;
HANDLE hProcess;
DWORD pidlistsize;
DWORD nwspages;
SYSTEM_INFO si;
PJOBOBJECT_BASIC_PROCESS_ID_LIST pProcessList;
JOBOBJECT_BASIC_ACCOUNTING_INFORMATION ji;
pbs_task *ptask = NULL;
BOOL is_process_in_job = FALSE;
/* Get the system info */
GetSystemInfo(&si);
/* Get the number of processes embedded in the job */
if (pjob->ji_hJob != NULL &&
QueryInformationJobObject(pjob->ji_hJob,
JobObjectBasicAccountingInformation,
&ji, sizeof(ji), NULL)) {
nps = ji.TotalProcesses;
}
if (nps == 0) {
pjob->ji_flags |= MOM_NO_PROC;
return 0;
}
/* Compute the size of pid list */
pidlistsize = sizeof(JOBOBJECT_BASIC_PROCESS_ID_LIST) +
(nps-1) * sizeof(DWORD);
pProcessList = (PJOBOBJECT_BASIC_PROCESS_ID_LIST) malloc(pidlistsize);
if (pProcessList == NULL) {
log_err(-1, "mem_sum:", "memory allocation failed");
return (0);
}
pProcessList->NumberOfAssignedProcesses = nps;
pProcessList->NumberOfProcessIdsInList = 0;
/* Get the pid list */
if (pjob->ji_hJob != NULL)
QueryInformationJobObject(pjob->ji_hJob,
JobObjectBasicProcessIdList,
pProcessList, pidlistsize, NULL);
/*
* Traverse through each process and find the
* memory used by that process during its execution.
*/
for (i = 0; i < (pProcessList->NumberOfProcessIdsInList); i++) {
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, pProcessList->ProcessIdList[i]);
if (hProcess != NULL) {
(void)QueryWorkingSet(hProcess, &nwspages, sizeof(nwspages));
mem += nwspages * (si.dwPageSize >> 10);
CloseHandle(hProcess);
}
}
/**
*
* @brief
* Is the process part of Windows job object.
*
* @param[in] hProc - handle to process
* @param[in] hJob - handle to job
* @param[out] p_is_process_in_job - pointer to store a bool value indicating
* whether the process is part of the Windows job object
*
* @return void
**/
void
IsProcessInJob(HANDLE hProc, HANDLE hJob, BOOL *p_is_process_in_job)
{
int nps = 0;
DWORD i = 0;
DWORD pidlistsize = 0;
DWORD pid = 0;
PJOBOBJECT_BASIC_PROCESS_ID_LIST pProcessList;
JOBOBJECT_BASIC_ACCOUNTING_INFORMATION ji;
if (hJob == INVALID_HANDLE_VALUE || hJob == NULL
|| hProc == INVALID_HANDLE_VALUE || hProc == NULL) {
*p_is_process_in_job = FALSE;
return;
}
/* Get the number of processes embedded in the job */
if (QueryInformationJobObject(hJob,
JobObjectBasicAccountingInformation,
&ji, sizeof(ji), NULL)) {
nps = ji.TotalProcesses;
}
if (nps == 0) {
*p_is_process_in_job = FALSE;
return;
}
/* Compute the size of pid list */
pidlistsize = sizeof(JOBOBJECT_BASIC_PROCESS_ID_LIST) +
(nps-1) * sizeof(DWORD);
pProcessList = (PJOBOBJECT_BASIC_PROCESS_ID_LIST) malloc(pidlistsize);
if (pProcessList == NULL) {
*p_is_process_in_job = FALSE;
return;
}
pProcessList->NumberOfAssignedProcesses = nps;
pProcessList->NumberOfProcessIdsInList = 0;
/* Get the pid list */
if (FALSE == QueryInformationJobObject(hJob,
JobObjectBasicProcessIdList,
pProcessList, pidlistsize, NULL))
return;
/*
* Traverse through each process and find the
* memory used by that process during its execution.
*/
pid = GetProcessId(hProc);
for (i = 0; i < (pProcessList->NumberOfProcessIdsInList); i++) {
if (pProcessList->ProcessIdList[i] == pid) {
free(pProcessList);
*p_is_process_in_job = TRUE;
return;
}
}
free(pProcessList);
*p_is_process_in_job = FALSE;
return;
}
HRESULT CNodeApplicationManager::Initialize(IHttpContext* context)
{
HRESULT hr;
BOOL isInJob, createJob;
JOBOBJECT_EXTENDED_LIMIT_INFORMATION jobInfo;
if (this->initialized)
{
return S_OK;
}
ErrorIf(NULL == (this->eventProvider = new CNodeEventProvider()), ERROR_NOT_ENOUGH_MEMORY);
CheckError(this->eventProvider->Initialize());
ErrorIf(NULL != this->asyncManager, ERROR_INVALID_OPERATION);
ErrorIf(NULL == (this->asyncManager = new CAsyncManager()), ERROR_NOT_ENOUGH_MEMORY);
CheckError(this->asyncManager->Initialize(context));
ErrorIf(NULL == (this->fileWatcher = new CFileWatcher()), ERROR_NOT_ENOUGH_MEMORY);
CheckError(this->fileWatcher->Initialize(context));
// determine whether node processes should be created in a new job object
// or whether current job object is adequate; the goal is to kill node processes when
// the IIS worker process is killed while preserving current job limits, if any
ErrorIf(!IsProcessInJob(GetCurrentProcess(), NULL, &isInJob), HRESULT_FROM_WIN32(GetLastError()));
if (!isInJob)
{
createJob = TRUE;
}
else
{
ErrorIf(!QueryInformationJobObject(NULL, JobObjectExtendedLimitInformation, &jobInfo, sizeof jobInfo, NULL),
HRESULT_FROM_WIN32(GetLastError()));
if (jobInfo.BasicLimitInformation.LimitFlags & JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK )
{
createJob = TRUE;
}
else if(jobInfo.BasicLimitInformation.LimitFlags & JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE )
{
createJob = FALSE;
}
else if(jobInfo.BasicLimitInformation.LimitFlags & JOB_OBJECT_LIMIT_BREAKAWAY_OK )
{
createJob = TRUE;
this->breakAwayFromJobObject = TRUE;
}
else
{
createJob = TRUE;
}
}
if (createJob)
{
ErrorIf(NULL == (this->jobObject = CreateJobObject(NULL, NULL)), HRESULT_FROM_WIN32(GetLastError()));
RtlZeroMemory(&jobInfo, sizeof jobInfo);
jobInfo.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
ErrorIf(!SetInformationJobObject(this->jobObject, JobObjectExtendedLimitInformation, &jobInfo, sizeof jobInfo),
HRESULT_FROM_WIN32(GetLastError()));
}
this->initialized = TRUE;
this->GetEventProvider()->Log(L"iisnode initialized the application manager", WINEVENT_LEVEL_INFO);
return S_OK;
Error:
this->GetEventProvider()->Log(L"iisnode failed to initialize the application manager", WINEVENT_LEVEL_ERROR);
if (NULL != this->asyncManager)
{
delete this->asyncManager;
this->asyncManager = NULL;
}
if (NULL != this->jobObject)
{
CloseHandle(this->jobObject);
this->jobObject = NULL;
}
if (NULL != this->fileWatcher)
{
delete this->fileWatcher;
this->fileWatcher = NULL;
}
return hr;
}
static void
run_child(wchar_t * cmdline)
{
HANDLE job;
JOBOBJECT_EXTENDED_LIMIT_INFORMATION info;
DWORD rc;
BOOL ok;
STARTUPINFOW si;
PROCESS_INFORMATION pi;
#if defined(_WINDOWS)
// When explorer launches a Windows (GUI) application, it displays
// the "app starting" (the "pointer + hourglass") cursor for a number
// of seconds, or until the app does something UI-ish (eg, creating a
// window, or fetching a message). As this launcher doesn't do this
// directly, that cursor remains even after the child process does these
// things. We avoid that by doing a simple post+get message.
// See http://bugs.python.org/issue17290 and
// https://bitbucket.org/vinay.sajip/pylauncher/issue/20/busy-cursor-for-a-long-time-when-running
MSG msg;
PostMessage(0, 0, 0, 0);
GetMessage(&msg, 0, 0, 0);
#endif
job = CreateJobObject(NULL, NULL);
ok = QueryInformationJobObject(job, JobObjectExtendedLimitInformation,
&info, sizeof(info), &rc);
if (!ok || (rc != sizeof(info)) || !job)
error(RC_CREATE_PROCESS, L"Job information querying failed");
info.BasicLimitInformation.LimitFlags |= JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE |
JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK;
ok = SetInformationJobObject(job, JobObjectExtendedLimitInformation, &info,
sizeof(info));
if (!ok)
error(RC_CREATE_PROCESS, L"Job information setting failed");
memset(&si, 0, sizeof(si));
si.cb = sizeof(si);
ok = safe_duplicate_handle(GetStdHandle(STD_INPUT_HANDLE), &si.hStdInput);
if (!ok)
error(RC_NO_STD_HANDLES, L"stdin duplication failed");
ok = safe_duplicate_handle(GetStdHandle(STD_OUTPUT_HANDLE), &si.hStdOutput);
if (!ok)
error(RC_NO_STD_HANDLES, L"stdout duplication failed");
ok = safe_duplicate_handle(GetStdHandle(STD_ERROR_HANDLE), &si.hStdError);
if (!ok)
error(RC_NO_STD_HANDLES, L"stderr duplication failed");
ok = SetConsoleCtrlHandler(ctrl_c_handler, TRUE);
if (!ok)
error(RC_CREATE_PROCESS, L"control handler setting failed");
si.dwFlags = STARTF_USESTDHANDLES;
ok = CreateProcessW(NULL, cmdline, NULL, NULL, TRUE,
0, NULL, NULL, &si, &pi);
if (!ok)
error(RC_CREATE_PROCESS, L"Unable to create process using '%ls'", cmdline);
AssignProcessToJobObject(job, pi.hProcess);
CloseHandle(pi.hThread);
WaitForSingleObjectEx(pi.hProcess, INFINITE, FALSE);
ok = GetExitCodeProcess(pi.hProcess, &rc);
if (!ok)
error(RC_CREATE_PROCESS, L"Failed to get exit code of process");
exit(rc);
}
/*! Iterates over all the threads associated with this job (as determined by
* mJobHandle), and runs the given callback function on them. The callback
* function need not close the handle to the thread.
*
* \param callback The callback function to run on each thread.
*
* \par A few notes on the necessity and implementation of IterateThreads:
* Before going to far into this function, you must realize that as much as one
* may hope to the contrary, windows has no concept of mass process management.
* If you want to do something to multiple processes or threads, windows
* provides a few mediocre iteration methods, but beyond that, you're on your
* own to find the processes and/or threads and work with them one at a time.
* The following function was written for that exact purpose, it searches
* through the list of all threads present in the entire system, finds the ones
* whose parent process is part of the job object and runs the given callback
* function on the thread.
*
* \par
* The reason this is written on the thread level as opposed to the process
* level (which would have been much easier), is because windows has no concept
* of suspending a process, it can only suspend threads. Since the ability to
* suspend and resume jobs was something that I wanted in GamessQ, it has to be
* done on the tread level. When it comes to terminating processes, simply
* terminating all their threads works just as well as terminating the process
* via windows TerminatProcess function.
*
* \note
* As clumsy as this method may seem, and as much as you may think and hope
* that there MUST be a better way to do it, there really isn't. So far as I
* have been able to find (and I searched for a while) this is the cleanest,
* most efficient way to handle windows processes and threads in mass.
*
* \sa mJobHandle
*/
bool WindowsJob::IterateThreads(bool (*callback)(HANDLE))
{
// We'll need this for later
bool retVal = true;
// get all the process ids for the job object
JOBOBJECT_BASIC_PROCESS_ID_LIST *info;
int num = mNumProcessors + 15; // make sure there's enough space
int size = sizeof(JOBOBJECT_BASIC_PROCESS_ID_LIST) + num * sizeof(DWORD);
info = (JOBOBJECT_BASIC_PROCESS_ID_LIST *)malloc(size);
ZeroMemory(info, size);
info->NumberOfAssignedProcesses = num;
if (! QueryInformationJobObject(mJobHandle, JobObjectBasicProcessIdList,
info, size, NULL)) {
LOG_ERROR("QueryInformationJobObject");
return false;
}
num = info->NumberOfProcessIdsInList;
// get a thread snapshot
HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
THREADENTRY32 entry;
ZeroMemory(&entry, sizeof(entry));
entry.dwSize = sizeof(entry);
if (! Thread32First(snapshot, &entry)) {
LOG_ERROR("Thread32First");
CloseHandle(snapshot);
return false;
}
// iterate through all the threads in the system.
bool more = true;
while (more) {
// search through the job ids
for (int i = 0; i < num; i ++) {
// if this thread's parent is in the list, run the callback on it
if (entry.th32OwnerProcessID == info->ProcessIdList[i]) {
HANDLE threadHandle = OpenThread(THREAD_TERMINATE |
THREAD_SUSPEND_RESUME , false, entry.th32ThreadID);
if (! threadHandle) {
LOG_ERROR("OpenThread");
} else {
retVal = retVal && callback(threadHandle);
}
CloseHandle(threadHandle);
break;
}
}
// get the next thread, and make sure it's valid
ZeroMemory(&entry, sizeof(entry));
entry.dwSize = sizeof(entry);
if (! Thread32Next(snapshot, &entry)) {
if (GetLastError() == ERROR_NO_MORE_FILES) {
more = false;
} else {
LOG_ERROR("Thread32Next");
free(info);
CloseHandle(snapshot);
return false;
}
}
}
// clean up
free(info);
CloseHandle(snapshot);
return retVal;
}
