reducing ConnectionNumber calls to a bare minimum

diff --git a/main.c b/main.c
index 906505c..6ef9ea7 100644 (file)
--- a/main.c
+++ b/main.c
@@ -162,7 +162,7 @@ xerror(Display *dpy, XErrorEvent *ee)
 int
 main(int argc, char *argv[])
 {
-       int i;
+       int i, xfd;
        unsigned int mask;
        fd_set rd;
        Bool readin = True;
@@ -181,6 +181,7 @@ main(int argc, char *argv[])
        if(!dpy)
                eprint("dwm: cannot open display\n");
 
+       xfd = ConnectionNumber(dpy);
        screen = DefaultScreen(dpy);
        root = RootWindow(dpy, screen);
 
@@ -260,15 +261,15 @@ main(int argc, char *argv[])
                FD_ZERO(&rd);
                if(readin)
                        FD_SET(STDIN_FILENO, &rd);
-               FD_SET(ConnectionNumber(dpy), &rd);
+               FD_SET(xfd, &rd);
 
-               i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
+               i = select(xfd + 1, &rd, 0, 0, 0);
                if(i == -1 && errno == EINTR)
                        continue;
                if(i < 0)
                        eprint("select failed\n");
                else if(i > 0) {
-                       if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
+                       if(FD_ISSET(xfd, &rd)) {
                                while(XPending(dpy)) {
                                        XNextEvent(dpy, &ev);
                                        if(handler[ev.type])