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From: | Haojun Bao <baohaojun AT gmail DOT com> |
To: | cygwin AT cygwin DOT com |
Subject: | Emacs can't start-process more than 30~40 processes (Was: Re: Emacs w3m `w3m-toggle-inline-images' cause segfault) |
References: | <83iqhlbgoc DOT fsf AT gmail DOT com> <4A6727A8 DOT 2090905 AT cornell DOT edu> <83iqhkur2h DOT fsf AT gmail DOT com> |
Date: | Mon, 27 Jul 2009 10:14:19 +0800 |
In-Reply-To: | <83iqhkur2h.fsf@gmail.com> (Haojun Bao's message of "Thu, 23 Jul 2009 09:27:18 +0800") |
Message-ID: | <834osy98jo.fsf_-_@gmail.com> |
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I have reduced the test case in this mail http://cygwin.com/ml/cygwin/2009-07/msg00111.html to a simpler one: $/bin/emacs --batch -q --execute '(let ((num 0)) (while (< num 30) (setq num (+ num 1)) (message "num is %d" num) (start-process "hello" nil "/usr/bin/echo")))' Emacs will coredump at the 30th process it tries to start on my XP. Now I think this should seem familiar to the experts. I tried to gdb it, the backtrace shows segfault is happening at the same place (#0 0x610949d8 in fhandler_pipe::create () from /usr/bin/cygwin1.dll) You might need to tweak the (< num 30) to (< num 40) or bigger, also, to use gdb on it, you need write the lisp into a file and use `-l' to load the file: cat > ~/2.el <<End (let ((num 0)) (while (< num 40) (setq num (+ num 1)) (message "num is %d" num) (start-process "hello" nil "/usr/bin/echo"))) End gdb --args ./emacs --batch -q -l ~/2.el -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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