view src/s/hpux.h @ 1268:fffe735e63ee

[xemacs-hg @ 2003-02-07 11:50:50 by ben] fixes for menu crashes + better preemption behavior This contains two related changes: (1) Fix problems with reentrant calling of lwlib and associated crashes when selecting menu items. (2) Improve redisplay handling of preemption. Turn on lazy lock and hold down page-down or page-up and you'll see what I mean. They are related because they both touch on the code that retrieves events and handles the internal queues. console-msw.h, event-msw.c, event-stream.c, events.h, menubar-msw.c, menubar-x.c, menubar.h: mswindows_protect_modal_loop() has been generalized to event_stream_protect_modal_loop(), and moved to event-stream.c. mswindows_in_modal_loop ->in_modal_loop likewise. Changes in event-msw.c and menubar-msw.c for the new names and calling format (use structures instead of static variables in menubar-msw.c). Delete former in_menu_callback and use in_modal_loop in its place. Remove emacs_mswindows_quit_check_disallowed_p(), superseded by in_modal_loop. Use event_stream_protect_modal_loop() in pre_activate_callback() so that we get no lwlib reentrancy. Rearrange some of the code in event-msw.c to be grouped better. Make mswindows_drain_windows_queue() respect in_modal_loop and do nothing if so. cmdloop.c, event-stream.c: Don't conditionalize on LWLIB_MENUBARS_LUCID when giving error when in_modal_loop, and give better error. event-Xt.c, event-gtk.c: If in_modal_loop, only retrieve process and timeout events. Don't retrieve any X events because processing them can lead to reentrancy in lwlib -> death. event-stream.c: Remove unused parameter to check_event_stream_ok() and change all callers. lisp.h, event-stream.c: Rearrange some functions for increased clarity -- in particular, group all the input-pending/QUIT-related stuff together, and put right next to next-event stuff, to which it's related. Add the concept of "HOW_MANY" -- when asking whether user input is pending, you can ask if at least HOW_MANY events are pending, not just if any are. Add parameter to detect_input_pending() for this. Change recursive_sit_for from a Lisp_Object (which could only be Qt or Qnil) to an int, like it should be. event-Xt.c, event-gtk.c, event-xlike-inc.c: New file. Abstract out similar code in event_{Xt/gtk}_pending_p() and write only once, using include-file tricks. Rewrite this function to implement HOW_MANY and only process events when not in_modal_loop. event-msw.c: Implement HOW_MANY and only process events when not in_modal_loop. event-tty.c: Implement HOW_MANY. redisplay.c: Add var `max-preempts' to control maximum number of preempts. (#### perhaps not useful) Rewrite preemption check so that, rather than preempting when any user events are available, only preempt when a certain number (currently 4) of them are backed up. This effectively allows redisplay to proceed to completion in the presence of a fast auto-repeat (usually the auto-repeating is generated dynamically as necessary), and you get much better display behavior with lazy-lock active. event-unixoid.c: Comment changes. event-stream.c: Rewrite discard-input much more simply and safely using the drain-queue functions. I think the old version might loop forever if called when in_modal_loop. SEMI-UNRELATED CHANGES: ----------------------- event-stream.c: Turn QUIT-checking back on when running the pre-idle hook so it can be quit out of. indent.c: Document exact functioning of `vertical-motion' better, and its differences from GNU Emacs.
author ben
date Fri, 07 Feb 2003 11:50:54 +0000
parents 023b83f4e54b
children
line wrap: on
line source

/* Definitions file for XEmacs running on HPUX release 7.0.
   Based on AT&T System V.2.
   Copyright (C) 1985, 1986 Free Software Foundation, Inc.

This file is part of XEmacs.

XEmacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

XEmacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: FSF 19.31. */

/*
 *	Define symbols to identify the version of Unix this is.
 *	Define all the symbols that apply correctly.
 */

#define USG				/* System III, System V, etc */

#define USG5

#define HPUX

/* XEmacs change: HPUX_PRE_8_0 needs to be defined for HP-UX 7.X and
   earlier.  DO NOT UNCOMMENT THE FOLLOWING IF HP-UX 8.0 OR LATER IS
   BEING USED; HPUX_PRE_8_0 will be automatically #undef'd later, if
   necessary. */
#define HPUX_PRE_8_0

/* SYSTEM_TYPE should indicate the kind of system you are using.
 It sets the Lisp variable system-type.  */

#define SYSTEM_TYPE "hpux"

/* `nomultiplejobs' should be defined if your system's shell
 does not have "job control" (the ability to stop a program,
 run some other program, then continue the first one).

 On hpux this depends on the precise kind of machine in use,
 so the m- file defines this symbol if appropriate.  */

/* Letter to use in finding device name of first pty,
  if system supports pty's.  'p' means it is /dev/ptym/ptyp0  */

#define FIRST_PTY_LETTER 'p'

/* If your system uses COFF (Common Object File Format) then define the
   preprocessor symbol "COFF". */

/* #define COFF */

/* define MAIL_USE_FLOCK if the mailer uses flock
   to interlock access to /usr/spool/mail/$USER.
   The alternative is that a lock file named
   /usr/spool/mail/$USER.lock.  */

/* #define MAIL_USE_FLOCK */

/* The file containing the kernel's symbol table is called /hp-ux.  */

#define KERNEL_FILE "/hp-ux"

/* The symbol in the kernel where the load average is found
   depends on the cpu type, so we let the m- files define LDAV_SYMBOL.  */

/* Special hacks needed to make Emacs run on this system.  */

/* On USG systems the system calls are interruptible by signals
 that the user program has elected to catch.  Thus the system call
 must be retried in these cases.  To handle this without massive
 changes in the source code, we remap the standard system call names
 to names for our own functions in sysdep.c that do the system call
 with retries. */

#define INTERRUPTIBLE_OPEN
#define INTERRUPTIBLE_IO
/* XEmacs change */
#define INTERRUPTIBLE_CLOSE

/* Use the system provided termcap(3) library */
#define TERMINFO

/* The 48-bit versions are more winning for Emacs;
   the ordinary ones don't give even 32 bits.  */
#define random lrand48
#define srandom srand48

/* In hpux, the symbol SIGIO is defined, but the feature
   doesn't work in the way Emacs needs it to.

   XEmacs change: XEmacs has patches Darryl Okhahata (?) submitted to
   the FSF which allow interrupt input in emacs. */

/* #define BROKEN_SIGIO */

/* USG systems tend to put everything declared static
   into the initialized data area, which becomes pure after dumping Emacs.
   Foil this by defining NO_REMAP, which makes the purespace not pure.
   (Formerly this was avoided by doing '#define static' but this just
   fails with inline functions.) */

#ifndef DONT_DEFINE_NO_REMAP
#define NO_REMAP
#endif

/* Define extra libraries to load.
   This should have -lBSD, but that library is said to make
   `signal' fail to work.  */

#ifdef HPUX_NET
#define LIBS_SYSTEM "-ln"
#else
#define LIBS_SYSTEM
#endif

/* Some additional system facilities exist.  */

/* XEmacs change */
/* #define HAVE_PERROR */ /* Delete this line for version 6.  */
 
/* The following maps shared exec file to demand loaded exec.
   Don't do this as demand loaded exec is broken in hpux.  */

#if 0

/* Adjust a header field for the executable file about to be dumped.  */

#define ADJUST_EXEC_HEADER   \
  hdr.a_magic = ((ohdr.a_magic.file_type == OLDMAGIC.file_type) ?  \
		 NEWMAGIC : ohdr.a_magic);

#endif

/* Baud-rate values in tty status have nonstandard meanings.  */

#define BAUD_CONVERT  \
{ 0, 50, 75, 110, 135, 150, 200, 300, 600, 900, 1200,  \
  1800, 2400, 3600, 4800, 7200, 9600, 19200, 38400 }

/* This is needed for HPUX version 6.2; it may not be needed for 6.2.1.  */
#define SHORT_CAST_BUG

/* This is how to get the device name of the tty end of a pty.  */
#define PTY_TTY_NAME_SPRINTF \
            sprintf (pty_name, "/dev/pty/tty%c%x", c, i);

/* This is how to get the device name of the control end of a pty.  */
#define PTY_NAME_SPRINTF \
	sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);

/* This triggers a conditional in xfaces.c.  */
#define XOS_NEEDS_TIME_H