1 /*-
2  * Copyright (c) 2004-2009, Jilles Tjoelker
51 struct pid {  struct
52 	RB_ENTRY(pid) entry;
53 	pid_t pid;  member
57 pidcmp(const struct pid *a, const struct pid *b)  in pidcmp()
59 	return (a->pid > b->pid ? 1 : a->pid < b->pid ? -1 : 0);  in pidcmp()
62 RB_HEAD(pidtree, pid);
64 RB_GENERATE_STATIC(pidtree, pid, entry, pidcmp);
69 	fprintf(stderr, "usage: pwait [-t timeout] [-opv] pid ...\n");  in usage()
74  * pwait - wait for processes to terminate
81 	struct pid k, *p;  in main()
85 	long pid;  in main()  local
96 	while ((opt = getopt(argc, argv, "opt:v")) != -1) {  in main()
134 			timeout -= (time_t)timeout;  in main()
147 	argc -= optind;  in main()
173 		pid = strtol(s, &end, 10);  in main()
174 		if (pid < 0 || pid > pid_max || *end != '\0' || errno != 0) {  in main()
178 		if (pid == mypid) {  in main()
179 			warnx("%s: skipping my own pid", s);  in main()
185 		p->pid = pid;  in main()
191 		EV_SET(e + nleft, pid, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, NULL);  in main()
192 		if (kevent(kq, e + nleft, 1, NULL, 0, NULL) == -1) {  in main()
195 			warn("%ld", pid);  in main()
210 		if (kevent(kq, e + nleft, 1, NULL, 0, NULL) == -1) {  in main()
215 		if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {  in main()
222 		if (n == -1) {  in main()
232 			pid = e[i].ident;  in main()
237 					    pid, WEXITSTATUS(status));  in main()
240 					    pid, WTERMSIG(status));  in main()
242 					printf("%ld: terminated.\n", pid);  in main()
245 			k.pid = pid;  in main()
251 			--nleft;  in main()
256 			printf("%d\n", p->pid);  in main()