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Message-ID: <3F1FD3E4.5030804@btopenworld.com>
Date: Thu, 24 Jul 2003 13:41:08 +0100
From: David Sharp <david DOT m DOT sharp AT btopenworld DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: How to diagnose Cygwin / Windows shutdown problem
References: <Pine DOT GSO DOT 4 DOT 44 DOT 0307232158590 DOT 26427-100000 AT slinky DOT cs DOT nyu DOT edu>
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I don't know for sure either, but by the end of a day, it is not unusual 
for me to see multiple instances of bash.exe within my task manager, 
despite having closed them in windows. Therefore I don't think there is 
windows->posix signal translation, just the other way around.

Igor Pechtchanski wrote:

>There is such a mechanism on Win2k.  I don't think there is one on Win9x.
>This thread seems to indicate that there isn't one on WinXP, either, at
>least not for shutdown messages.
>	Igor
>
>On Wed, 23 Jul 2003, Andrew DeFaria wrote:
>
>  
>
>>Randall R Schulz wrote:
>>
>>    
>>
>>>Andrew,
>>>
>>>Cygwin apps don't have a Windows event handler do they?
>>>      
>>>
>>To tell you the truth... I don't know for sure.
>>
>>    
>>
>>>The two programming models (Win32 and POSIX) are fundamentally
>>>different, so based on my very limited understanding, it seems that
>>>Cygwin itself (code in Cygwin1.dll) would have to intercept these
>>>OS-generated events and translate them into POSIX signals (SIGUP, say).
>>>      
>>>
>>Makes sense to me! I would suspect that when one clicks on the close
>>button in the window frame that generates a Windows event that is
>>translated somehow to send a kill signal to the shell. If true then
>>there is already a mechanism for Win Event -> POSIX signal.
>>
>>    
>>
>>>Randall Schulz
>>>
>>>At 17:16 2003-07-23, Andrew DeFaria wrote:
>>>
>>>      
>>>
>>>>Randall R Schulz wrote:
>>>>
>>>>        
>>>>
>>>>>Cygwin apps don't know about and cannot respond to the
>>>>>system-generated messages that request that applications quit in
>>>>>preparation for the system to shut down or the user to log off.
>>>>>          
>>>>>
>>>>"Cannot respond to"? When a system-generated message that requests
>>>>that applications quit in preparation for the systme to shut down or
>>>>the user to log off why can Cygwin apps (in particular bash or other
>>>>shell) simply do what it would have done if TMOUT was just triggered?
>>>>
>>>>      TMOUT  If set to a value greater than zero, TMOUT  is  treated
>>>>as  the
>>>>             default timeout for the read builtin.  The select
>>>>command termi-
>>>>             nates if input does not arrive after TMOUT seconds when
>>>>input is
>>>>             coming  from  a terminal.  In an interactive shell, the
>>>>value is
>>>>             interpreted as the number of seconds to  wait  for
>>>>input  after
>>>>             issuing  the  primary prompt.  Bash terminates after
>>>>waiting for
>>>>             that number of seconds if input does not arrive.
>>>>        
>>>>
>
>  
>



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