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) 06/29/88"; 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 } 51