2.11BSD#431 - /usr/src/bin/tcsh/tc.wait.h

   1: /* $Header: /home/hyperion/mu/christos/src/sys/tcsh-6.00/RCS/tc.wait.h,v 3.0 1991/07/04 21:49:28 christos Exp $ */
   2: /*
   3:  * tc.wait.h: Wait.h for machines that don't have it or have it and
   4:  *	      is incorrect.
   5:  */
   6: /*-
   7:  * Copyright (c) 1980, 1991 The Regents of the University of California.
   8:  * All rights reserved.
   9:  *
  10:  * Redistribution and use in source and binary forms, with or without
  11:  * modification, are permitted provided that the following conditions
  12:  * are met:
  13:  * 1. Redistributions of source code must retain the above copyright
  14:  *    notice, this list of conditions and the following disclaimer.
  15:  * 2. Redistributions in binary form must reproduce the above copyright
  16:  *    notice, this list of conditions and the following disclaimer in the
  17:  *    documentation and/or other materials provided with the distribution.
  18:  * 3. All advertising materials mentioning features or use of this software
  19:  *    must display the following acknowledgement:
  20:  *	This product includes software developed by the University of
  21:  *	California, Berkeley and its contributors.
  22:  * 4. Neither the name of the University nor the names of its contributors
  23:  *    may be used to endorse or promote products derived from this software
  24:  *    without specific prior written permission.
  25:  *
  26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36:  * SUCH DAMAGE.
  37:  */
  38: #ifndef _h_tc_wait
  39: #define _h_tc_wait
  40: 
  41: /*
  42:  *	This wait is for big-endians and little endians
  43:  */
  44: union wait {
  45:     int     w_status;
  46: # ifdef _SEQUENT_
  47:     struct {
  48:     unsigned short w_Termsig:7;
  49:     unsigned short w_Coredump:1;
  50:     unsigned short w_Retcode:8;
  51:     }       w_T;
  52:     struct {
  53:     unsigned short w_Stopval:8;
  54:     unsigned short w_Stopsig:8;
  55:     }       w_S;
  56: };
  57: 
  58: # define w_termsig     w_T.w_Termsig
  59: # define w_coredump    w_T.w_Coredump
  60: # define w_retcode     w_T.w_Retcode
  61: # define w_stopval     w_S.w_Stopval
  62: # define w_stopsig     w_S.w_Stopsig
  63: #else /* _SEQUENT_ */
  64: # if defined(vax) || defined(i386)
  65:     union {
  66:     struct {
  67:         unsigned int w_Termsig:7;
  68:         unsigned int w_Coredump:1;
  69:         unsigned int w_Retcode:8;
  70:         unsigned int w_Dummy:16;
  71:     }       w_T;
  72:     struct {
  73:         unsigned int w_Stopval:8;
  74:         unsigned int w_Stopsig:8;
  75:         unsigned int w_Dummy:16;
  76:     }       w_S;
  77:     }       w_P;
  78: # else /* mc68000 || sparc || ??? */
  79:     union {
  80:     struct {
  81:         unsigned int w_Dummy:16;
  82:         unsigned int w_Retcode:8;
  83:         unsigned int w_Coredump:1;
  84:         unsigned int w_Termsig:7;
  85:     }       w_T;
  86:     struct {
  87:         unsigned int w_Dummy:16;
  88:         unsigned int w_Stopsig:8;
  89:         unsigned int w_Stopval:8;
  90:     }       w_S;
  91:     }       w_P;
  92: # endif	/* vax || i386 */
  93: };
  94: 
  95: # define w_termsig  w_P.w_T.w_Termsig
  96: # define w_coredump w_P.w_T.w_Coredump
  97: # define w_retcode  w_P.w_T.w_Retcode
  98: # define w_stopval  w_P.w_S.w_Stopval
  99: # define w_stopsig  w_P.w_S.w_Stopsig
 100: #endif /* _SEQUENT_ */
 101: 
 102: 
 103: #ifndef WNOHANG
 104: # define WNOHANG    1   /* dont hang in wait */
 105: #endif
 106: # ifndef WUNTRACED
 107: #  define WUNTRACED 2   /* tell about stopped, untraced children */
 108: # endif
 109: # define WSTOPPED 0177
 110: # define WIFSTOPPED(x)  ((x).w_stopval == WSTOPPED)
 111: # define WIFSIGNALED(x) (((x).w_stopval != WSTOPPED) && ((x).w_termsig != 0))
 112: #endif /* _h_tc_wait */

Defined union's

Defined macros

Usage of this include