if stdin writer stops working, dwm consumed much IO load because it still tried to select on this fd, fixed
--- a/main.c Fri Jul 14 13:27:01 2006 +0200
+++ b/main.c Fri Jul 14 17:30:37 2006 +0200
@@ -190,6 +190,7 @@
fd_set rd;
XSetWindowAttributes wa;
unsigned int mask;
+ Bool readstdin = True;
Window w;
XEvent ev;
@@ -283,7 +284,8 @@
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 @@
(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)