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From: ludovic.courtes@laas.fr (Ludovic Courtès)
To: Guile-Devel <guile-devel@gnu.org>
Subject: Unbuffered socket I/O
Date: Fri, 23 Feb 2007 18:09:16 +0100	[thread overview]
Message-ID: <87mz34ol6r.fsf@laas.fr> (raw)

Hi,

Is there a reason why `SCM_SOCK_FD_TO_PORT ()' in `socket.c' asks for an
unbuffered port?  This results in awful inefficiency, as can be seen
with `strace':

  read(7, "\x43", 1)                      = 1
  select(1024, [7], [], [], {0, 0})       = 1 (in [7], left {0, 0})
  read(7, "\x4c", 1)                      = 1
  select(1024, [7], [], [], {0, 0})       = 1 (in [7], left {0, 0})
  read(7, "\x41", 1)                      = 1
  select(1024, [7], [], [], {0, 0})       = 1 (in [7], left {0, 0})

I'd like to change it to:

  #define SCM_SOCK_FD_TO_PORT(fd) \
     scm_fdes_to_port (fd, "r", sym_socket)

Thanks,
Ludovic.


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             reply	other threads:[~2007-02-23 17:09 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-23 17:09 Ludovic Courtès [this message]
2007-02-23 22:36 ` Unbuffered socket I/O Neil Jerram
2007-02-25 22:57 ` Kevin Ryde
2007-02-26 14:07   ` Ludovic Courtès
2007-02-26 20:32     ` Neil Jerram
2007-02-26 23:35       ` Kevin Ryde
2007-02-27  9:11       ` Ludovic Courtès
2007-02-28 21:24         ` Kevin Ryde
2007-03-01  9:10           ` Ludovic Courtès
2007-03-04 23:48             ` Kevin Ryde
2007-03-07  0:20             ` Kevin Ryde
2007-03-07  0:30             ` Kevin Ryde
2007-03-07  4:45               ` Kevin Ryde
2007-03-07  9:40               ` Ludovic Courtès
2007-02-26 23:27     ` Kevin Ryde
2007-02-28  9:47       ` Ludovic Courtès
2007-02-28 20:59         ` Kevin Ryde
2007-03-01 10:44           ` Ludovic Courtès
2007-03-05 23:15             ` Kevin Ryde
2007-08-07 16:01               ` Ludovic Courtès
2007-05-13 17:13       ` `scm_std_select ()' call in `fport_wait_for_input ()' Ludovic Courtès

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