shithub: bar

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use channel instead of wrong display locking

--- a/bar.c

+++ b/bar.c

@@ -114,8 +114,6 @@

 	Tm tm;

 	lockdisplay(display);

-	if(screen == nil)

-		return;

 	r = screen->r;

 	draw(screen, r, cback, nil, ZP);

@@ -186,7 +184,7 @@

 }

 static void

-auxproc(void *)

+auxproc(void *c)

 {

 	Biobuf b;

 	char *s;

@@ -194,13 +192,7 @@

 	Binit(&b, 0, OREAD);

 	for(;;){

 		s = Brdstr(&b, '\n', 1);

-		lockdisplay(display);

-		free(aux);

-		aux = s ? s : strdup("");

-		unlockdisplay(display);

-		redraw();

-		if(wctl >= 0)

-			fprint(wctl, bottom ? "bottom" : "top");

+		sendp(c, s);

 		if(s == nil)

 			break;

 	}

@@ -230,6 +222,7 @@

 		Emouse,

 		Eresize,

 		Ekeyboard,

+		Eaux,

 		Eend,

 	};

 	Alt a[] = {

@@ -236,6 +229,7 @@

 		[Emouse] = { nil, &m, CHANRCV },

 		[Eresize] = { nil, nil, CHANRCV },

 		[Ekeyboard] = { nil, &key, CHANRCV },

+		[Eaux] = { nil, &s, CHANRCV },

 		[Eend] = { nil, nil, CHANEND },

 	};

@@ -272,9 +266,10 @@

 	if((kctl = initkeyboard(nil)) == nil)

 		sysfatal("initkeyboard: %r");

-	a[0].c = mctl->c;

-	a[1].c = mctl->resizec;

-	a[2].c = kctl->c;

+	a[Emouse].c = mctl->c;

+	a[Eresize].c = mctl->resizec;

+	a[Ekeyboard].c = kctl->c;

+	a[Eaux].c = chancreate(sizeof(s), 4);

 	brgb = DPalegreygreen;

 	if((b = Bopen("/dev/theme", OREAD)) != nil){

@@ -296,7 +291,7 @@

 	readbattery();

 	redraw();

 	proccreate(updateproc, nil, 4096);

-	proccreate(auxproc, nil, 16384);

+	proccreate(auxproc, a[Eaux].c, 16384);

 	for(;;){

 		switch(alt(a)){

@@ -303,13 +298,6 @@

 		case Emouse:

 			break;

-		case Eresize:

-			if(getwindow(display, Refnone) < 0)

-				threadexitsall(nil);

-			redraw();

-			place();

-			break;

-

 		case Ekeyboard:

 			if(key == Kdel){

 				close(wctl);

@@ -316,6 +304,20 @@

 				wctl = -1;

 				threadexitsall(nil);

 			}

+			break;

+

+		case Eresize:

+			if(getwindow(display, Refnone) < 0)

+				threadexitsall(nil);

+			/* wet floor */

+

+		case Eaux:

+			if(wctl >= 0)

+				fprint(wctl, bottom ? "bottom" : "top");

+			free(aux);

+			aux = strdup(s ? s : "");

+			redraw();

+			place();

 			break;

 		}

 	}