update time every min

dwm.c

@@ -1384,10 +1384,41 @@ run(void)
 	XEvent ev;
 	/* main event loop */
 	XSync(dpy, False);
-	while (!XNextEvent(dpy, &ev))
+
+	int display_fd = ConnectionNumber(dpy);
+
+	while (1)
 	{
-		if (handler[ev.type])
-			handler[ev.type](&ev); /* call handler */
+		// Wait until there is an XEvent
+		fd_set waited_read_fds;
+		FD_ZERO(&waited_read_fds);
+		FD_SET(display_fd, &waited_read_fds);
+
+		struct timeval tv;
+		tv.tv_sec  = 60;
+		tv.tv_usec = 0;
+
+		int fds_ready_count = select(display_fd + 1, &waited_read_fds, NULL, NULL, &tv);
+
+		if(fds_ready_count > 0)
+		{
+			// Event pending
+			while(XPending(dpy))
+			{
+				XNextEvent(dpy, &ev);
+
+				if (handler[ev.type])
+					handler[ev.type](&ev); /* call handler */
+			}
+		}
+		else if(fds_ready_count == 0)
+		{
+			// timeout
+		}
+		else
+		{
+			// error
+		}
 
 		vene_run();
 	}