usr/src/lib/libshell/common/sh/waitevent.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1982-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                  David Korn <dgk@research.att.com>                   *
  18 *                                                                      *
  19 ***********************************************************************/
  20 #pragma prototyped
  21
  22 #include        "defs.h"
  23 /*
  24  *  This installs a hook to allow the processing of events when
  25  *  the shell is waiting for input and when the shell is
  26  *  waiting for job completion.
  27  *  The previous waitevent hook function is returned
  28  */
  29
  30
  31 void    *sh_waitnotify(int(*newevent)(int,long,int))
  32 {
  33         int (*old)(int,long,int);
  34         old = sh.waitevent;
  35         sh.waitevent = newevent;
  36         return((void*)old);
  37 }
  38
  39 #if __OBSOLETE__ < 20080101
  40 /*
  41  * this used to be a private symbol
  42  * retain the old name for a bit for a smooth transition
  43  */
  44
  45 #if defined(__EXPORT__)
  46 #define extern          __EXPORT__
  47 #endif
  48
  49 extern void     *_sh_waitnotify(int(*newevent)(int,long,int))
  50 {
  51         return sh_waitnotify(newevent);
  52 }
  53
  54 #endif