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bug#5723: 23.1.94; make-network-process and emacs hangs
From: |
YAMAMOTO Mitsuharu |
Subject: |
bug#5723: 23.1.94; make-network-process and emacs hangs |
Date: |
Thu, 18 Mar 2010 18:06:20 +0900 |
User-agent: |
Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (Shijō) APEL/10.6 Emacs/22.3 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI) |
>>>>> On Thu, 18 Mar 2010 08:43:45 +0100, Helmut Eller <eller.helmut@gmail.com>
>>>>> said:
> * YAMAMOTO Mitsuharu [2010-03-18 02:57+0100] writes:
>> If your case blocks at `connect', then it can't be quit with C-g
>> regardless of SYNC_INPUT on those ports/systems, because atimer is
>> turned off during the `connect' call.
> Why is the timer turned off around connect? Handling SIGALARM
> during connect doesn't seem much different from handling SIGIO.
I think your argument makes sense.
I don't know the reason why the timer is turned off around connect.
The related code was added by the following change:
committer: Ken Raeburn <raeburn@raeburn.org>
timestamp: Sat 2000-06-24 06:06:53 +0000
message:
* process.c (Fopen_network_stream): Turn off atimers for duration of call to
connect. (Patch from Gerd.)
http://cvs.savannah.gnu.org/viewvc/emacs/src/process.c?root=emacs&r1=1.314&r2=1.315
And as of this change, SIGIO was also disabled.
25249 kwzh@gn | /* Kernel bugs (on Ultrix at least) cause lossage (not
just EINTR)
25249 kwzh@gn | when connect is interrupted. So let's not let it get
interrupted.
25249 kwzh@gn | Note we do not turn off polling, because polling is
only used
25249 kwzh@gn | when not interrupt_input, and thus not normally used
on the systems
25249 kwzh@gn | which have this bug. On systems which use polling,
there's no way
25249 kwzh@gn | to quit if polling is turned off. */
25249 kwzh@gn | if (interrupt_input)
25249 kwzh@gn | unrequest_sigio ();
25249 kwzh@gn |
25249 kwzh@gn | immediate_quit = 1;
25249 kwzh@gn | QUIT;
25249 kwzh@gn |
29922 raeburn | /* This turns off all alarm-based interrupts; the
29922 raeburn | bind_polling_period call above doesn't always turn all
the
29922 raeburn | short-interval ones off, especially if interrupt_input
is
29922 raeburn | set.
29922 raeburn |
29922 raeburn | It'd be nice to be able to control the connect timeout
29922 raeburn | though. Would non-blocking connect calls be portable?
*/
29922 raeburn | turn_on_atimers (0);
25249 kwzh@gn | ret = connect (s, lres->ai_addr, lres->ai_addrlen);
29922 raeburn | turn_on_atimers (1);
Does anyone have the mailing list archive around 2000-06? It's not
found at list.gnu.org.
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
- bug#5723: 23.1.94; make-network-process and emacs hangs, Leo, 2010/03/15
- bug#5723: 23.1.94; make-network-process and emacs hangs, Dan Nicolaescu, 2010/03/15
- bug#5723: 23.1.94; make-network-process and emacs hangs, Stefan Monnier, 2010/03/15
- bug#5723: 23.1.94; make-network-process and emacs hangs, Helmut Eller, 2010/03/15
- bug#5723: 23.1.94; make-network-process and emacs hangs, YAMAMOTO Mitsuharu, 2010/03/15
- bug#5723: 23.1.94; make-network-process and emacs hangs, Leo, 2010/03/17
- bug#5723: 23.1.94; make-network-process and emacs hangs, YAMAMOTO Mitsuharu, 2010/03/17
- bug#5723: 23.1.94; make-network-process and emacs hangs, Helmut Eller, 2010/03/18
- bug#5723: 23.1.94; make-network-process and emacs hangs,
YAMAMOTO Mitsuharu <=
- bug#5723: 23.1.94; make-network-process and emacs hangs, YAMAMOTO Mitsuharu, 2010/03/18
- bug#5723: 23.1.94; make-network-process and emacs hangs, Helmut Eller, 2010/03/19
- bug#5723: 23.1.94; make-network-process and emacs hangs, YAMAMOTO Mitsuharu, 2010/03/19
- bug#5723: 23.1.94; make-network-process and emacs hangs, Stefan Monnier, 2010/03/19
- bug#5723: 23.1.94; make-network-process and emacs hangs, YAMAMOTO Mitsuharu, 2010/03/19
- bug#5723: 23.1.94; make-network-process and emacs hangs, Leo, 2010/03/20
- bug#5723: 23.1.94; make-network-process and emacs hangs, Chong Yidong, 2010/03/24
- bug#5723: 23.1.94; make-network-process and emacs hangs, YAMAMOTO Mitsuharu, 2010/03/24
- bug#5723: 23.1.94; make-network-process and emacs hangs, Chong Yidong, 2010/03/24
- bug#5723: 23.1.94; make-network-process and emacs hangs, Leo, 2010/03/18