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Re: More info on sporadic OS/X crash
From: |
YAMAMOTO Mitsuharu |
Subject: |
Re: More info on sporadic OS/X crash |
Date: |
Mon, 26 Apr 2004 22:15:27 +0900 (JST) |
>>>>> On Sun, 25 Apr 2004 10:49:07 -0700, Steven Tamm <address@hidden> said:
> The patch seemed to make sense to be, except for the FD_CLR
> (i.e. the bug in select from 10.1) I forgot to ask, have you tried
> that patch on 10.2 or just 10.3?
I just tried the patch on both 10.1.5 and 10.2.8, but I could not find
any problems by a few tests on subprocesses. If you have a specific
example, maybe I can test it.
> And with the non-carbon build?
For the X11 build, fd 0 is excluded from input_wait_mask with
add_keyboard_wait_descriptor in x_term_init. For the Carbon build, fd
0 is never consulted in sys_select (in mac.c with the patch), but the
window event queue is consulted instead.
A comment in mac.c says:
When Emacs is started from the Finder, SELECT always immediately
returns as if input is present when file descriptor 0 is polled for
input. Strangely, when Emacs is run as a GUI application from the
command line, it blocks in the same situation. This `wrapper' of
the system call SELECT corrects this discrepancy.
According to the output of lsof, fd 0 is bound to /dev/null for the
former case, whereas it is bound to the tty from which Emacs is
invoked for the latter case. That would explain the above phenomena.
YAMAMOTO Mitsuharu
address@hidden
- More info on sporadic OS/X crash, John Wiegley, 2004/04/15
- Re: More info on sporadic OS/X crash, John Wiegley, 2004/04/23
- Re: More info on sporadic OS/X crash, Piet van Oostrum, 2004/04/27
- Re: More info on sporadic OS/X crash, Eli Zaretskii, 2004/04/28
- Re: More info on sporadic OS/X crash, Piet van Oostrum, 2004/04/28
- Re: More info on sporadic OS/X crash, Eli Zaretskii, 2004/04/28
- Re: More info on sporadic OS/X crash, Piet van Oostrum, 2004/04/29
- Re: More info on sporadic OS/X crash, Kim F. Storm, 2004/04/29
- Re: More info on sporadic OS/X crash, Piet van Oostrum, 2004/04/29
- Re: More info on sporadic OS/X crash, Steven Tamm, 2004/04/29