Quellcode durchsuchen

Fix high CPU usage when rendering status bar

Looking up the width of special color setting characters was causing
high CPU usage. Ignore special characters when calculating the width.
Frans Bergman vor 4 Jahren
Ursprung
Commit
23937acdbc
1 geänderte Dateien mit 14 neuen und 1 gelöschten Zeilen
  1. 14 1
      dwm.c

+ 14 - 1
dwm.c

@@ -885,7 +885,20 @@ drawbar(Monitor *m)
 	/* draw status first so it can be overdrawn by tags later */
 	if (m == selmon) { /* status is only drawn on selected monitor */
 		drw_setscheme(drw, scheme[SchemeNorm]);
-		sw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
+		/* calculate text width while ignoring special chars */
+		sw = 0;
+		while (1) {
+			if ((unsigned int)*ts > LENGTH(colors)) { ts++; continue ; }
+			ctmp = *ts;
+			*ts = '\0';
+			sw += TEXTW(tp) -lrpad;
+			if (ctmp == '\0') { break; }
+			*ts = ctmp;
+			tp = ++ts;
+		}
+		ts = stext;
+		tp = stext;
+		/* render text */
 		while (1) {
 			if ((unsigned int)*ts > LENGTH(colors)) { ts++; continue ; }
 			ctmp = *ts;