Hi All,
I am spawning a process from a service. The spawned process hungs for
various reasons, (corrupted data, deadlock). I am expecting the process has
to complete the task with in the expected time limit, if it exceeds the
limit I want to terminate the process (no mercy or graceful, just terminate
the process).
The spawnng of the process, counting the time and termination of process all
done in C++. Some time I am not able to terminate the process, the error
message was "Access denied". I dont want this also happens. The program has
to terminate the process even, the process in any state. How to do that?
What security permissions I have to give?
Here is the code snippet of the teminate application,
================================================== =======
static DWORD WINAPI TerminateApp( DWORD dwPID, DWORD dwTimeout )
{
HANDLE hProc ;
DWORD dwRet ;
// If we can't open the process with PROCESS_TERMINATE rights,
// then we give up immediately.
hProc = OpenProcess(SYNCHRONIZE|PROCESS_TERMINATE, FALSE,
dwPID);
if(hProc == NULL)
{
return TA_FAILED ;
}
// TerminateAppEnum() posts WM_CLOSE to all windows whose PID
// matches your process's.
EnumWindows((WNDENUMPROC)TerminateAppEnum, (LPARAM) dwPID) ;
// Wait on the handle. If it signals, great. If it times out,
// then you kill it.
if(WaitForSingleObject(hProc, dwTimeout)!=WAIT_OBJECT_0)
dwRet=(TerminateProcess(hProc,0)?TA_SUCCESS_KILL:T A_FAILED);
else
dwRet = TA_SUCCESS_CLEAN ;
CloseHandle(hProc) ;
return dwRet ;
}
static BOOL CALLBACK TerminateAppEnum( HWND hwnd, LPARAM lParam )
{
DWORD dwID ;
GetWindowThreadProcessId(hwnd, &dwID) ;
if(dwID == (DWORD)lParam)
{
PostMessage(hwnd, WM_CLOSE, 0, 0) ;
}
return TRUE ;
}
================================================== =======
All suggestion appreciated.
Thanks
GTS 5 2907
"GTS" <gt******@hotmail.com> wrote in message news:<O1**************@TK2MSFTNGP12.phx.gbl>... Hi All,
I am spawning a process from a service. The spawned process hungs for various reasons, (corrupted data, deadlock). I am expecting the process has to complete the task with in the expected time limit, if it exceeds the limit I want to terminate the process (no mercy or graceful, just terminate the process). ...
Try this.
HANDLE h = OpenProcess(PROCESS_TERMINATE,FALSE,dwId);
TerminateProcess(h,0);
sending a wm_close to a "hung" process does not really help much....
hth.
-Vinayak
Or a better idea would be to send WM_CLOSE, wait some time, then check to
see if the process still exists. If it does, then do TerminateProcess() as
a last resort.
"Vinayak Raghuvamshi" <vs************@hotmail.com> wrote in message
news:9a**************************@posting.google.c om... "GTS" <gt******@hotmail.com> wrote in message
news:<O1**************@TK2MSFTNGP12.phx.gbl>... Hi All,
I am spawning a process from a service. The spawned process hungs for various reasons, (corrupted data, deadlock). I am expecting the process
has to complete the task with in the expected time limit, if it exceeds the limit I want to terminate the process (no mercy or graceful, just
terminate the process). ...
Try this.
HANDLE h = OpenProcess(PROCESS_TERMINATE,FALSE,dwId); TerminateProcess(h,0);
sending a wm_close to a "hung" process does not really help much....
hth. -Vinayak
"JJ" <jj**@nospam.com> wrote in message news:Oh*************@TK2MSFTNGP10.phx.gbl... Or a better idea would be to send WM_CLOSE, wait some time, then check to see if the process still exists. If it does, then do TerminateProcess() as a last resort.
Isn't that what the original poster did?
He sends the windows of the process the WM_CLOSE, then does WaitForSingleObject on the process. If it times-out rather than
signals, he calls TerminateProcess.
--
Adam Clauss ca*****@tamu.edu
Could you check the process identity the service runs with?
If it's:
"local system" AND
"Allow service to interact with desktop" is enabled,
AND the spawned process has a windows message loop (message pump).
then posting ( WM_CLOSE ) should work.
However, this won't work If "Allow service to interact with desktop" is not
set, as you can't post/send messages from the interactive desktop your
"terminate" program runs in to the sandboxed services desktop/winstation
your spawned process runs in.
"TerminateProcess" will not work either, as the spawned process runs as
"local system" it can only be terminated by a process running as "local
system", even an administrator can't terminate such process.
Willy.
"GTS" <gt******@hotmail.com> wrote in message
news:O1**************@TK2MSFTNGP12.phx.gbl... Hi All,
I am spawning a process from a service. The spawned process hungs for various reasons, (corrupted data, deadlock). I am expecting the process has to complete the task with in the expected time limit, if it exceeds the limit I want to terminate the process (no mercy or graceful, just terminate the process).
The spawnng of the process, counting the time and termination of process all done in C++. Some time I am not able to terminate the process, the error message was "Access denied". I dont want this also happens. The program has to terminate the process even, the process in any state. How to do that? What security permissions I have to give?
Here is the code snippet of the teminate application, ================================================== ======= static DWORD WINAPI TerminateApp( DWORD dwPID, DWORD dwTimeout ) { HANDLE hProc ; DWORD dwRet ;
// If we can't open the process with PROCESS_TERMINATE rights, // then we give up immediately. hProc = OpenProcess(SYNCHRONIZE|PROCESS_TERMINATE, FALSE, dwPID);
if(hProc == NULL) { return TA_FAILED ; }
// TerminateAppEnum() posts WM_CLOSE to all windows whose PID // matches your process's. EnumWindows((WNDENUMPROC)TerminateAppEnum, (LPARAM) dwPID) ;
// Wait on the handle. If it signals, great. If it times out, // then you kill it. if(WaitForSingleObject(hProc, dwTimeout)!=WAIT_OBJECT_0) dwRet=(TerminateProcess(hProc,0)?TA_SUCCESS_KILL:T A_FAILED); else dwRet = TA_SUCCESS_CLEAN ;
CloseHandle(hProc) ;
return dwRet ; }
static BOOL CALLBACK TerminateAppEnum( HWND hwnd, LPARAM lParam ) { DWORD dwID ;
GetWindowThreadProcessId(hwnd, &dwID) ;
if(dwID == (DWORD)lParam) { PostMessage(hwnd, WM_CLOSE, 0, 0) ; }
return TRUE ; }
================================================== =======
All suggestion appreciated.
Thanks
GTS
Sorry - I missed that.
"Adam Clauss" <ca*****@tamu.edu> wrote in message
news:O1*************@TK2MSFTNGP12.phx.gbl... "JJ" <jj**@nospam.com> wrote in message
news:Oh*************@TK2MSFTNGP10.phx.gbl... Or a better idea would be to send WM_CLOSE, wait some time, then check
to see if the process still exists. If it does, then do TerminateProcess()
as a last resort.
Isn't that what the original poster did? He sends the windows of the process the WM_CLOSE, then does
WaitForSingleObject on the process. If it times-out rather than signals, he calls TerminateProcess.
-- Adam Clauss ca*****@tamu.edu This discussion thread is closed Replies have been disabled for this discussion. Similar topics
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