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