/* */ /* Copyright (c) 1984,1985,1986,1987,1988,1989,1990 AT&T */ /* All Rights Reserved */ /* */ /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T. */ /* The copyright notice above does not evidence any */ /* actual or intended publication of such source code. */ /* */ /* * find out whether the poll() system call works */ #include int main(argc,argv) char *argv[]; { struct pollfd fd; long before,after; time(&before); poll(&fd,0,1500); time(&after); if(after>before) { printf("#define _poll_\t1\n"); exit(0); } exit(1); }