void bar_run(struct bar *bar) {
int pfds = bar->outputs->length + 2;
struct pollfd *pfd = malloc(pfds * sizeof(struct pollfd));
bool dirty = true;
pfd[0].fd = bar->ipc_event_socketfd;
pfd[0].events = POLLIN;
pfd[1].fd = bar->status_read_fd;
pfd[1].events = POLLIN;
int i;
for (i = 0; i < bar->outputs->length; ++i) {
struct output *output = bar->outputs->items[i];
pfd[i+2].fd = wl_display_get_fd(output->registry->display);
pfd[i+2].events = POLLIN;
}
while (1) {
if (dirty) {
int i;
for (i = 0; i < bar->outputs->length; ++i) {
struct output *output = bar->outputs->items[i];
if (window_prerender(output->window) && output->window->cairo) {
render(output, bar->config, bar->status);
window_render(output->window);
wl_display_flush(output->registry->display);
}
}
}
dirty = false;
poll(pfd, pfds, -1);
if (pfd[0].revents & POLLIN) {
sway_log(L_DEBUG, "Got IPC event.");
dirty = handle_ipc_event(bar);
}
if (bar->config->status_command && pfd[1].revents & POLLIN) {
sway_log(L_DEBUG, "Got update from status command.");
dirty = handle_status_line(bar);
}
// dispatch wl_display events
for (i = 0; i < bar->outputs->length; ++i) {
struct output *output = bar->outputs->items[i];
if (pfd[i+2].revents & POLLIN) {
if (wl_display_dispatch(output->registry->display) == -1) {
sway_log(L_ERROR, "failed to dispatch wl: %d", errno);
}
} else {
wl_display_dispatch_pending(output->registry->display);
}
}
}
}
static int ipc_reap_events(void)
{
int len, events = 0;
merlin_event *pkt;
node_log_event_count(&ipc, 0);
len = node_recv(&ipc);
if (len < 0)
return len;
while ((pkt = node_get_event(&ipc))) {
events++;
handle_ipc_event(pkt);
}
ldebug("Read %d events in %s from %s", events, human_bytes(len), ipc.name);
return 0;
}
void bar_run(struct bar *bar) {
fd_set readfds;
int activity;
bool dirty = true;
while (1) {
if (dirty) {
struct output *output = bar->output;
if (window_prerender(output->window) && output->window->cairo) {
render(output, bar->config, bar->status);
window_render(output->window);
if (wl_display_dispatch(output->registry->display) == -1) {
break;
}
}
}
dirty = false;
FD_ZERO(&readfds);
FD_SET(bar->ipc_event_socketfd, &readfds);
FD_SET(bar->status_read_fd, &readfds);
activity = select(FD_SETSIZE, &readfds, NULL, NULL, NULL);
if (activity < 0) {
sway_log(L_ERROR, "polling failed: %d", errno);
}
if (FD_ISSET(bar->ipc_event_socketfd, &readfds)) {
sway_log(L_DEBUG, "Got IPC event.");
dirty = handle_ipc_event(bar);
}
if (bar->config->status_command && FD_ISSET(bar->status_read_fd, &readfds)) {
sway_log(L_DEBUG, "Got update from status command.");
dirty = handle_status_line(bar);
}
}
}
