src/s/unixware.h

   1 /* s/ file for Unixware.
   2
   3 Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   4   2008, 2009, 2010  Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software: you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation, either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21
  22 #include "usg5-4-common.h"
  23
  24 /* #define HAVE_GETWD  (appears to be buggy on SVR4.2) */
  25 #undef HAVE_GETWD
  26
  27 #undef HAVE_SYSV_SIGPAUSE
  28
  29 /* This is the same definition as in usg5-4-common.h, but with sigblock/sigunblock
  30    rather than sighold/sigrelse, which appear to be BSD4.1 specific.
  31    It may also be appropriate for SVR4.x
  32    (x<2) but I'm not sure.   fnf@cygnus.com */
  33 /* This sets the name of the slave side of the PTY.  On SysVr4,
  34    grantpt(3) forks a subprocess, so keep sigchld_handler() from
  35    intercepting that death.  If any child but grantpt's should die
  36    within, it should be caught after sigrelse(2).  */
  37 #define PTY_TTY_NAME_SPRINTF                    \
  38   {                                             \
  39     char *ptsname(), *ptyname;                  \
  40                                                 \
  41     sigblock(sigmask(SIGCLD));                  \
  42     if (grantpt(fd) == -1)                      \
  43       fatal("could not grant slave pty");       \
  44     sigunblock(sigmask(SIGCLD));                \
  45     if (unlockpt(fd) == -1)                     \
  46       fatal("could not unlock slave pty");      \
  47     if (!(ptyname = ptsname(fd)))               \
  48       fatal ("could not enable slave pty");     \
  49     strncpy(pty_name, ptyname, sizeof(pty_name)); \
  50     pty_name[sizeof(pty_name) - 1] = 0;         \
  51   }
  52
  53 /* Data type of load average, as read out of kmem.  */
  54 #define LOAD_AVE_TYPE long
  55
  56 /* Convert that into an integer that is 100 for a load average of 1.0  */
  57 /* This is totally uncalibrated. */
  58 #define LOAD_AVE_CVT(x) ((int) (((double) (x)) * 100.0 / FSCALE))
  59 #define FSCALE 256.0
  60
  61
  62 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->__ptr - (FILE)->__base)
  63
  64 /* arch-tag: d82e92e7-9443-4a60-a581-7f293cbae8a3
  65    (do not change this comment) */