lint

[unix-history] / usr / src / usr.bin / window / wwchild.c

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)wwchild.c   3.13 (Berkeley) %G%";
#endif /* not lint */

#include "ww.h"
#include <sys/wait.h>

void
wwchild()
{
       extern errno;
       int olderrno;
       register struct ww **wp;
       union wait w;
       int pid;
       char collected = 0;

       olderrno = errno;
       while ((pid = wait3(&w, WNOHANG|WUNTRACED, (struct rusage *)0)) > 0) {
               for (wp = wwindex; wp < &wwindex[NWW]; wp++) {
                       if (*wp && (*wp)->ww_state == WWS_HASPROC
                           && (*wp)->ww_pid == pid) {
                               (*wp)->ww_state = WWS_DEAD;
                               collected = 1;
                               break;
                       }
               }
       }
       errno = olderrno;
       /* jump out of wwiomux when somebody dies */
       if (collected)
               wwsetintr();
}