src/syswait.h

   1 /* Define wait system call interface for Emacs.
   2    Copyright (C) 1993, 1994, 1995, 2000, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007, 2008, 2009, 2010, 2011  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software: you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation, either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* Define the structure that the wait system call stores.
  21    On many systems, there is a structure defined for this.
  22    But on vanilla-ish USG systems there is not.  */
  23
  24 #ifndef EMACS_SYSWAIT_H
  25 #define EMACS_SYSWAIT_H
  26
  27 #include <sys/types.h>
  28
  29 #ifdef HAVE_SYS_WAIT_H  /* We have sys/wait.h with POSIXoid definitions. */
  30 #include <sys/wait.h>
  31 #endif  /* !HAVE_SYS_WAIT_H */
  32
  33 #ifndef WCOREDUMP               /* not POSIX */
  34 #define WCOREDUMP(status) ((status) & 0x80)
  35 #endif
  36 #ifndef WEXITSTATUS
  37 #define WEXITSTATUS(status) (((status)  & 0xff00) >> 8)
  38 #endif
  39 #ifndef WIFEXITED
  40 #define WIFEXITED(status) (WTERMSIG(status) == 0)
  41 #endif
  42 #ifndef WIFSTOPPED
  43 #define WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
  44 #endif
  45 #ifndef WIFSIGNALED
  46 #define WIFSIGNALED(status) (!WIFSTOPPED(status) && !WIFEXITED(status))
  47 #endif
  48 #ifndef WSTOPSIG
  49 #define WSTOPSIG(status) WEXITSTATUS(status)
  50 #endif
  51 #ifndef WTERMSIG
  52 #define WTERMSIG(status) ((status) & 0x7f)
  53 #endif
  54
  55 #undef WRETCODE
  56 #define WRETCODE(status) WEXITSTATUS (status)
  57
  58
  59 #endif /* EMACS_SYSWAIT_H */
  60