all repos — dwm @ 5b44976a2d8bdd1397727663ce019374d6b2730a

my dwm build 

if stdin writer stops working, dwm consumed much IO load because it still tried to select on this fd, fixed
Anselm R. Garbe garbeam@wmii.de
Fri, 14 Jul 2006 17:30:37 +0200
commit

5b44976a2d8bdd1397727663ce019374d6b2730a

parent

6475be926bef4916ce632988a2fa408a637babc7

1 files changed, 7 insertions(+), 3 deletions(-)

jump to
M main.c → main.c 
@@ -190,6 +190,7 @@ int i, n;
 	fd_set rd;
 	XSetWindowAttributes wa;
 	unsigned int mask;
+	Bool readstdin = True;
 	Window w;
 	XEvent ev;
 

@@ -283,7 +284,8 @@ /* main event loop, reads status text from stdin as well */
 Mainloop:
 	while(running) {
 		FD_ZERO(&rd);
-		FD_SET(STDIN_FILENO, &rd);
+		if(readstdin)
+			FD_SET(STDIN_FILENO, &rd);
 		FD_SET(ConnectionNumber(dpy), &rd);
 
 		i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);

@@ -299,11 +301,13 @@ if(handler[ev.type])
 						(handler[ev.type])(&ev); /* call handler */
 				}
 			}
-			if(FD_ISSET(STDIN_FILENO, &rd)) {
+			if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
 				i = n = 0;
 				for(;;) {
 					if((i = getchar()) == EOF) {
-						stext[0] = 0;
+						/* broken pipe/end of producer */
+						readstdin = False;
+						strcpy(stext, "broken pipe");
 						goto Mainloop;
 					}
 					if(i == '\n' || n >= sizeof(stext) - 1)