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Annotation of 43BSDTahoe/ucb/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:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: static char sccsid[] = "@(#)wwchild.c  3.9 (Berkeley) 6/29/88";
        !            20: #endif /* not lint */
        !            21: 
        !            22: #include "ww.h"
        !            23: #include <sys/types.h>
        !            24: #include <sys/wait.h>
        !            25: 
        !            26: wwchild()
        !            27: {
        !            28:        extern errno;
        !            29:        int olderrno;
        !            30:        register struct ww **wp;
        !            31:        union wait w;
        !            32:        int pid;
        !            33:        char collected = 0;
        !            34: 
        !            35:        olderrno = errno;
        !            36:        while ((pid = wait3(&w, WNOHANG|WUNTRACED, (struct rusage *)0)) > 0) {
        !            37:                for (wp = wwindex; wp < &wwindex[NWW]; wp++) {
        !            38:                        if (*wp && (*wp)->ww_state == WWS_HASPROC
        !            39:                            && (*wp)->ww_pid == pid) {
        !            40:                                (*wp)->ww_state = WWS_DEAD;
        !            41:                                collected = 1;
        !            42:                                break;
        !            43:                        }
        !            44:                }
        !            45:        }
        !            46:        errno = olderrno;
        !            47:        /* jump out of wwiomux when somebody dies */
        !            48:        if (collected)
        !            49:                wwsetintr();
        !            50: }

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