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Re: busyloop in sigchld_handler
From: |
Kim F. Storm |
Subject: |
Re: busyloop in sigchld_handler |
Date: |
Wed, 28 Mar 2007 12:02:02 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.96 (gnu/linux) |
Sam Steingold <address@hidden> writes:
>> * YAMAMOTO Mitsuharu <address@hidden> [2007-03-26 10:47:41 +0900]:
>>
>> The following change (without a ChangeLog entry) made operations using
>> subprocesses really sluggish on Mac OS X. Is it possible to restrict
>> the workaround to the relevant platforms?
>
> sorry - this patch merely reverted another one (which did not merit a
> ChangeLog entry either :-)
>
> how about this?
> one millisecond is enough to fix my problem - does it fix yours?
>
> --- process.c 24 Mar 2007 23:02:12 -0400 1.506
> +++ process.c 25 Mar 2007 21:54:24 -0400
> @@ -6507,7 +6507,7 @@
> loadavg to 5-8(!) for ~10 seconds.
> See http://thread.gmane.org/gmane.emacs.devel/67722 or
> http://www.google.com/search?q=busyloop+in+sigchld_handler */
> - sleep (1);
> + usleep (1000);
> errno = 0;
> pid = wait3 (&w, WNOHANG | WUNTRACED, 0);
> }
>
Do all platforms have usleep ?
Otherwise, we need a check in configure and use
#ifdef HAVE_USLEEP
usleep(1000);
#endif
--
Kim F. Storm <address@hidden> http://www.cua.dk
- Re: busyloop in sigchld_handler, (continued)
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/14
- Re: busyloop in sigchld_handler, Kim F. Storm, 2007/03/14
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/14
- Re: busyloop in sigchld_handler, Kim F. Storm, 2007/03/16
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/16
- Re: busyloop in sigchld_handler, Richard Stallman, 2007/03/13
- Re: busyloop in sigchld_handler, David Kastrup, 2007/03/14
Re: busyloop in sigchld_handler, YAMAMOTO Mitsuharu, 2007/03/25
- Re: busyloop in sigchld_handler, Sam Steingold, 2007/03/25
- Re: busyloop in sigchld_handler, YAMAMOTO Mitsuharu, 2007/03/25
- Re: busyloop in sigchld_handler,
Kim F. Storm <=
- Re: busyloop in sigchld_handler, Chong Yidong, 2007/03/28
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/28
- Re: busyloop in sigchld_handler, Kim F. Storm, 2007/03/28
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/28
- Re: busyloop in sigchld_handler, Kim F. Storm, 2007/03/28
- Re: busyloop in sigchld_handler, Richard Stallman, 2007/03/29
Re: busyloop in sigchld_handler, Alfred M. Szmidt, 2007/03/28