1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. 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, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #ifndef lint
38 static char sccsid[] = "@(#)wwchild.c 8.1 (Berkeley) 6/6/93";
39 static char rcsid[] =
40 "$FreeBSD: head/usr.bin/window/wwchild.c 97788 2002-06-03 23:13:11Z mike $";
41 #endif /* not lint */
42
43 #include "ww.h"
44 #include <errno.h>
45 #include <sys/types.h>
46 #include <sys/wait.h>
47
48 void
wwchild()49 wwchild()
50 {
51 register struct ww **wp;
52 pid_t pid;
53 int olderrno, w;
54 char collected = 0;
55
56 olderrno = errno;
57 while ((pid =
58 wait3((int *)&w, WNOHANG|WUNTRACED, (struct rusage *)0)) > 0) {
59 for (wp = wwindex; wp < &wwindex[NWW]; wp++) {
60 if (*wp && (*wp)->ww_state == WWS_HASPROC
61 && (*wp)->ww_pid == pid) {
62 (*wp)->ww_state = WWS_DEAD;
63 collected = 1;
64 break;
65 }
66 }
67 }
68 errno = olderrno;
69 /* jump out of wwiomux when somebody dies */
70 if (collected)
71 wwsetintr();
72 }
73