123     struct pollfd pfd[num_displays][num_events];  in vsync_loop()  local
144             pfd[dpy][ev].fd = open(node_path, O_RDONLY);  in vsync_loop()
146             if (dpy == HWC_DISPLAY_PRIMARY && pfd[dpy][ev].fd < 0) {  in vsync_loop()
159             pread(pfd[dpy][ev].fd, vdata , MAX_DATA, 0);  in vsync_loop()
160             if (pfd[dpy][ev].fd >= 0)  in vsync_loop()
161                 pfd[dpy][ev].events = POLLPRI | POLLERR;  in vsync_loop()
167             int err = poll(*pfd, (int)(num_displays * num_events), -1);  in vsync_loop()
171                         if (pfd[dpy][ev].revents & POLLPRI) {  in vsync_loop()
172                             ssize_t len = pread(pfd[dpy][ev].fd, vdata, MAX_DATA, 0);  in vsync_loop()
209             if(pfd[dpy][event].fd >= 0)  in vsync_loop()
210                 close (pfd[dpy][event].fd);  in vsync_loop()