Terminating Process

[GTS]

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_TERMINA TE rights,
// then we give up immediately.
hProc = OpenProcess(SYN CHRONIZE|PROCES S_TERMINATE, FALSE,
dwPID);

if(hProc == NULL)
{
return TA_FAILED ;
}

// TerminateAppEnu m() posts WM_CLOSE to all windows whose PID
// matches your process's.
EnumWindows((WN DENUMPROC)Termi nateAppEnum, (LPARAM) dwPID) ;

// Wait on the handle. If it signals, great. If it times out,
// then you kill it.
if(WaitForSingl eObject(hProc, dwTimeout)!=WAI T_OBJECT_0)
dwRet=(Terminat eProcess(hProc, 0)?TA_SUCCESS_K ILL:TA_FAILED);
else
dwRet = TA_SUCCESS_CLEA N ;

CloseHandle(hPr oc) ;

return dwRet ;
}


static BOOL CALLBACK TerminateAppEnu m( HWND hwnd, LPARAM lParam )
{
DWORD dwID ;

GetWindowThread ProcessId(hwnd, &dwID) ;

if(dwID == (DWORD)lParam)
{
PostMessage(hwn d, WM_CLOSE, 0, 0) ;
}

return TRUE ;
}

=============== =============== =============== ============

All suggestion appreciated.

Thanks

GTS

[Vinayak Raghuvamshi]

Re: Terminating Process

"GTS" <gtskaran@hotma il.com> wrote in message news:<O1f21IvcE HA.1672@TK2MSFT NGP12.phx.gbl>. ..[color=blue]
> 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).
> ...[/color]

Try this.

HANDLE h = OpenProcess(PRO CESS_TERMINATE, FALSE,dwId);
TerminateProces s(h,0);

sending a wm_close to a "hung" process does not really help much....

hth.
-Vinayak

[JJ]

Re: Terminating Process

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 TerminateProces s() as
a last resort.


"Vinayak Raghuvamshi" <vs_raghuvamshi @hotmail.com> wrote in message
news:9afa978c.0 407261322.4236b 7e6@posting.goo gle.com...[color=blue]
> "GTS" <gtskaran@hotma il.com> wrote in message[/color]
news:<O1f21IvcE HA.1672@TK2MSFT NGP12.phx.gbl>. ..[color=blue][color=green]
> > 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[/color][/color]
has[color=blue][color=green]
> > 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[/color][/color]
terminate[color=blue][color=green]
> > the process).
> > ...[/color]
>
> Try this.
>
> HANDLE h = OpenProcess(PRO CESS_TERMINATE, FALSE,dwId);
> TerminateProces s(h,0);
>
> sending a wm_close to a "hung" process does not really help much....
>
> hth.
> -Vinayak[/color]

[Adam Clauss]

Re: Terminating Process

"JJ" <jjjj@nospam.co m> wrote in message news:OhKPNs3cEH A.384@TK2MSFTNG P10.phx.gbl...[color=blue]
> 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 TerminateProces s() as
> a last resort.[/color]

Isn't that what the original poster did?
He sends the windows of the process the WM_CLOSE, then does WaitForSingleOb ject on the process. If it times-out rather than
signals, he calls TerminateProces s.

--
Adam Clauss
cabadam@tamu.ed u

[Willy Denoyette [MVP]]

Re: Terminating Process

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.
"TerminateProce ss" 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" <gtskaran@hotma il.com> wrote in message
news:O1f21IvcEH A.1672@TK2MSFTN GP12.phx.gbl...[color=blue]
> 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_TERMINA TE rights,
> // then we give up immediately.
> hProc = OpenProcess(SYN CHRONIZE|PROCES S_TERMINATE, FALSE,
> dwPID);
>
> if(hProc == NULL)
> {
> return TA_FAILED ;
> }
>
> // TerminateAppEnu m() posts WM_CLOSE to all windows whose PID
> // matches your process's.
> EnumWindows((WN DENUMPROC)Termi nateAppEnum, (LPARAM) dwPID) ;
>
> // Wait on the handle. If it signals, great. If it times out,
> // then you kill it.
> if(WaitForSingl eObject(hProc, dwTimeout)!=WAI T_OBJECT_0)
> dwRet=(Terminat eProcess(hProc, 0)?TA_SUCCESS_K ILL:TA_FAILED);
> else
> dwRet = TA_SUCCESS_CLEA N ;
>
> CloseHandle(hPr oc) ;
>
> return dwRet ;
> }
>
>
> static BOOL CALLBACK TerminateAppEnu m( HWND hwnd, LPARAM lParam )
> {
> DWORD dwID ;
>
> GetWindowThread ProcessId(hwnd, &dwID) ;
>
> if(dwID == (DWORD)lParam)
> {
> PostMessage(hwn d, WM_CLOSE, 0, 0) ;
> }
>
> return TRUE ;
> }
>
> =============== =============== =============== ============
>
> All suggestion appreciated.
>
> Thanks
>
> GTS
>
>[/color]

[JJ]

Re: Terminating Process

Sorry - I missed that.

"Adam Clauss" <cabadam@tamu.e du> wrote in message
news:O1wJqh4cEH A.996@TK2MSFTNG P12.phx.gbl...[color=blue]
> "JJ" <jjjj@nospam.co m> wrote in message[/color]
news:OhKPNs3cEH A.384@TK2MSFTNG P10.phx.gbl...[color=blue][color=green]
> > Or a better idea would be to send WM_CLOSE, wait some time, then check[/color][/color]
to[color=blue][color=green]
> > see if the process still exists. If it does, then do TerminateProces s()[/color][/color]
as[color=blue][color=green]
> > a last resort.[/color]
>
> Isn't that what the original poster did?
> He sends the windows of the process the WM_CLOSE, then does[/color]
WaitForSingleOb ject on the process. If it times-out rather than[color=blue]
> signals, he calls TerminateProces s.
>
> --
> Adam Clauss
> cabadam@tamu.ed u
>[/color]