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Re: How to diagnose Cygwin / Windows shutdown problem

Randall R Schulz wrote:


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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