[Bug 15462] New: Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

           Summary: Wine blocking on exit when stdout and stderr are piped
           Product: Wine
           Version: 1.0.0
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: wine-bugs(a)winehq.org
        ReportedBy: chris(a)neko.net.nz


Created an attachment (id=16357)
 --> (http://bugs.winehq.org/attachment.cgi?id=16357)
Output of two simultaneous runs of described script

The issue occurs when concurrently running shell scripts which call Wine
processes whose standard out and standard error are both piped to another
program.

When two instances of a script such as the following are run concurrently, the
first child wine processes started by each of then run together, but in one of
the scripts that child doesn't fully exit until the _other_ script has
completely run and exited. (The Wine process terminates, but the pipeline
doesn't complete and so the script doesn't continue.)

A bash test-case to show this behaviour is as follows:

for iter in first second ; do echo "[$$] running $iter child wine" `date`; wine
sleep-long.exe 2>&1 | tee /dev/null; done; echo "[$$] done " `date`

The problem doesn't occur if either the redirection or pipe is removed, if I
run the scripts in separate Wine environments using $WINEPREFIX, or if I have
another long-lived Wine process which stays running throughout the entire
operation.

An example run with timing is attached.

The test Wine program used above, 'sleep-long', is the following tiny C program
(tested with Microsoft cl and Cygwin GCC with mingw): 

#include <stdio.h>
#include <windows.h>
int main(){
    printf("Started fake compiler, sleeping 8000ms\n");
    Sleep(8000);
    printf("Exiting fake compiler\n");
    exit(0);
}

I've been able to reproduce this problem on several systems and Wine versions
(Debian Lenny with distro-packaged Wine 1.0.0-1, Debian Etch with Wine
1.0-rc1-1~bpo40+1 from Debian backports, Ubuntu Dapper with distro-packaged
Wine 0.9.9-0ubuntu2) but not on one other (Debian Etch with distro-packaged
Wine 0.9.25-2.1)


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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462


Austin English <austinenglish(a)gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |testcase




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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462





--- Comment #1 from Austin English <austinenglish(a)gmail.com>  2009-03-30 13:29:01 ---
Is this still an issue in current (1.1.18 or newer) wine?


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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462


Austin English <austinenglish(a)gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |download




--- Comment #2 from Austin English <austinenglish(a)gmail.com>  2009-10-01 14:57:56 ---
Is this still an issue in current (1.1.30 or newer) wine?

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

Frédéric Delanoy <frederic.delanoy(a)gmail.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |Abandoned?
                 CC|                            |frederic.delanoy(a)gmail.com

--- Comment #3 from Frédéric Delanoy <frederic.delanoy(a)gmail.com> 2011-09-17 11:53:26 CDT ---
Is this still an issue in current (1.3.28 or newer) wine?

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

Dan Kegel <dank(a)kegel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
                 CC|                            |dank(a)kegel.com
     Ever Confirmed|0                           |1

--- Comment #4 from Dan Kegel <dank(a)kegel.com> 2011-09-17 12:26:18 CDT ---
Yes, this is still an issue.  It's easy to reproduce.
Just run his command in two windows at the same time.

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

Ken Sharp <kennybobs(a)o2.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|Abandoned?                  |

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

--- Comment #5 from Dan Kegel <dank(a)kegel.com> 2013-03-28 18:02:16 CDT ---
It still sounds interesting.

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

Andrey Turkin <andrey.turkin(a)gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |andrey.turkin(a)gmail.com

--- Comment #6 from Andrey Turkin <andrey.turkin(a)gmail.com> 2013-05-21 02:29:00 CDT ---
Here's that happens:
1) One wine process forks off wineserver which would leave stderr open in case
it needs to dump some traces or error messages; this stderr handle (inherited
from wine process) is connected to write side of a pipe which tee reads
2) wine process for another script instance uses this wineserver for its
operation
3) wine process that initially started wineserver exits; wineserver still
lingers for few more seconds; tee waits for all the writers to go away
4) second wine process in another script instance starts up, connects to the
wineserver and runs to completion
5) wineserver waits for few seconds again, then exits
6) tee exits, second wine process is started (starting new wineserver)

Basically the question here is when wineserver should close its inherited
stderr when implicitly started in background by wine (right away from the
start, or when program that spawned wineserver exits, or when all non-system
programs started by that original program exited, or never, or something else). 
Also there is an obvious workaround described by Chris - just start some wine
application beforehand to make sure wineserver is there.

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

--- Comment #7 from Micha Nelissen <micha(a)neli.hopto.org> 2013-11-23 06:40:04 CST ---
Created attachment 46618
  --> http://bugs.winehq.org/attachment.cgi?id=46618
Patch that daemonizes wineserver, fixes issue

I have attached a patch that fixes the issue for me. I'm using wine to run the
MSVC compiler.

The patch creates a daemon.err logfile in the wine server dir
(/tmp/.wine-XXX/YYY/), where the output of wineserver.exe, services.exe, and
all other background processes go.

I've removed the inheritance of stdin/stdout/stderr in server/process.c (that
took some time to find!) because in windows, either you set bInheritHandles to
true with CreateProcess and you inherit stdin etc too, or you set it false, and
you get nothing. So this patch should also increase winapi compatibility.

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

Micha Nelissen <micha(a)neli.hopto.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |micha(a)neli.hopto.org

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

--- Comment #8 from Frédéric Delanoy <frederic.delanoy(a)gmail.com> 2013-11-23 10:10:24 CST ---
(In reply to comment #7)
> Created attachment 46618 [details]
> Patch that daemonizes wineserver, fixes issue
>
> I have attached a patch that fixes the issue for me. I'm using wine to run the
> MSVC compiler.
>
> The patch creates a daemon.err logfile in the wine server dir
> (/tmp/.wine-XXX/YYY/), where the output of wineserver.exe, services.exe, and
> all other background processes go.
>
> I've removed the inheritance of stdin/stdout/stderr in server/process.c (that
> took some time to find!) because in windows, either you set bInheritHandles to
> true with CreateProcess and you inherit stdin etc too, or you set it false, and
> you get nothing. So this patch should also increase winapi compatibility.

You probably would want to send it to wine-patches, or wine-devel mailing list
if you want some kind of review.

Patches are not picked up from bugzilla

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

http://bugs.winehq.org/show_bug.cgi?id=15462

Qian Hong <fracting(a)gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fracting(a)gmail.com

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

https://bugs.winehq.org/show_bug.cgi?id=15462

Detlef Riekenberg <wine.dev(a)web.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |wine.dev(a)web.de

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

https://bugs.winehq.org/show_bug.cgi?id=15462

Andrey <andrey.gursky(a)e-mail.ua> changed:

           What    |Removed                     |Added
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                 CC|                            |andrey.gursky(a)e-mail.ua

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[Bug 15462] Wine blocking on exit when stdout and stderr are piped

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=15462

François Gouget <fgouget(a)codeweavers.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fgouget(a)codeweavers.com
           Keywords|                            |patch

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