49 int semup(int semid)  in semup()  argument
55 	if (semop(semid, &semops, 1) == -1) {  in semup()
63 int semdown(int semid)  in semdown()  argument
69 	if (semop(semid, &semops, 1) == -1) {  in semdown()
86 void mainloop(int semid)  in mainloop()  argument
90 		if (semdown(semid)) {  in mainloop()
96 		if (semup(semid)) {  in mainloop()
106 	int semid, opt;  in main()  local
128 	if ((semid = semget((key_t) 9142, 1, 0666 | IPC_CREAT)) < 0) {  in main()
133 	if (semctl(semid, 0, SETVAL, semunion) == -1) {  in main()
144 		mainloop(semid);  in main()
150 		if (semctl(semid, 0, IPC_RMID, semunion) == -1) {  in main()
161 		mainloop(semid);  in main()