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 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 static char sccsid[] = "@(#)wwchild.c 3.13 (Berkeley) 08/12/90"; 13 #endif /* not lint */ 14 15 #include "ww.h" 16 #include <sys/wait.h> 17 18 void 19 wwchild() 20 { 21 extern errno; 22 int olderrno; 23 register struct ww **wp; 24 union wait w; 25 int pid; 26 char collected = 0; 27 28 olderrno = errno; 29 while ((pid = wait3(&w, WNOHANG|WUNTRACED, (struct rusage *)0)) > 0) { 30 for (wp = wwindex; wp < &wwindex[NWW]; wp++) { 31 if (*wp && (*wp)->ww_state == WWS_HASPROC 32 && (*wp)->ww_pid == pid) { 33 (*wp)->ww_state = WWS_DEAD; 34 collected = 1; 35 break; 36 } 37 } 38 } 39 errno = olderrno; 40 /* jump out of wwiomux when somebody dies */ 41 if (collected) 42 wwsetintr(); 43 } 44