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Annotation of 43BSDReno/usr.bin/window/wwchild.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * Edward Wang at The University of California, Berkeley.
                      7:  *
                      8:  * Redistribution and use in source and binary forms are permitted provided
                      9:  * that: (1) source distributions retain this entire copyright notice and
                     10:  * comment, and (2) distributions including binaries display the following
                     11:  * acknowledgement:  ``This product includes software developed by the
                     12:  * University of California, Berkeley and its contributors'' in the
                     13:  * documentation or other materials provided with the distribution and in
                     14:  * all advertising materials mentioning features or use of this software.
                     15:  * Neither the name of the University nor the names of its contributors may
                     16:  * be used to endorse or promote products derived from this software without
                     17:  * specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  */
                     22: 
                     23: #ifndef lint
                     24: static char sccsid[] = "@(#)wwchild.c  3.12 (Berkeley) 6/6/90";
                     25: #endif /* not lint */
                     26: 
                     27: #include "ww.h"
                     28: #include <sys/wait.h>
                     29: 
                     30: wwchild()
                     31: {
                     32:        extern errno;
                     33:        int olderrno;
                     34:        register struct ww **wp;
                     35:        union wait w;
                     36:        int pid;
                     37:        char collected = 0;
                     38: 
                     39:        olderrno = errno;
                     40:        while ((pid = wait3(&w, WNOHANG|WUNTRACED, (struct rusage *)0)) > 0) {
                     41:                for (wp = wwindex; wp < &wwindex[NWW]; wp++) {
                     42:                        if (*wp && (*wp)->ww_state == WWS_HASPROC
                     43:                            && (*wp)->ww_pid == pid) {
                     44:                                (*wp)->ww_state = WWS_DEAD;
                     45:                                collected = 1;
                     46:                                break;
                     47:                        }
                     48:                }
                     49:        }
                     50:        errno = olderrno;
                     51:        /* jump out of wwiomux when somebody dies */
                     52:        if (collected)
                     53:                wwsetintr();
                     54: }

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