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Fixes #1 for real. Cpu usage lowered even more.

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LemonBoy
2012-07-17 16:56:03 +02:00
parent 0723d9320d
commit 5f336a6a2d
1 changed files with 27 additions and 19 deletions
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34
bar.c
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@@ -162,7 +162,7 @@ init (void)
int int
main (int argc, char **argv) main (int argc, char **argv)
{ {
struct pollfd pollin = { .fd = STDIN_FILENO, .events = POLLIN }; struct pollfd pollin[2] = { { .fd = STDIN_FILENO, .events = POLLIN }, { .fd = -1, .events = POLLIN } };
static char input[1024] = {0, }; static char input[1024] = {0, };
xcb_generic_event_t *ev; xcb_generic_event_t *ev;
@@ -188,34 +188,42 @@ main (int argc, char **argv)
signal (SIGTERM, sighandle); signal (SIGTERM, sighandle);
init (); init ();
/* Get the fd to Xserver */
pollin[1].fd = xcb_get_file_descriptor (c);
fillrect (0, 0, 0, bw, BAR_HEIGHT); fillrect (0, 0, 0, bw, BAR_HEIGHT);
for (;;) { for (;;) {
if (!hup && poll (&pollin, 1, 500) > 0) { int redraw = 0;
if (pollin.revents & POLLHUP) hup = 1;
if (poll ((struct pollfd *)&pollin, 2, -1) > 0) {
if (pollin[0].revents & POLLHUP) pollin[0].fd = -1; /* No more data, just null it :D */
if (pollin[0].revents & POLLIN) { /* New input, process it */
fgets (input, sizeof(input), stdin); fgets (input, sizeof(input), stdin);
parse (input); parse (input);
xcb_copy_area (c, canvas, win, gc, 0, 0, 0, 0, bw, BAR_HEIGHT); redraw = 1;
} }
if (pollin[1].revents & POLLIN) { /* Xserver broadcasted an event */
while ((ev = xcb_poll_for_event (c))) { while ((ev = xcb_poll_for_event (c))) {
expose_ev = (xcb_expose_event_t *)ev; expose_ev = (xcb_expose_event_t *)ev;
switch (ev->response_type & 0x7F) { switch (ev->response_type & 0x7F) {
case XCB_EXPOSE: xcb_copy_area (c, canvas, win, gc, expose_ev->x, expose_ev->y, case XCB_EXPOSE:
expose_ev->x, expose_ev->y, expose_ev->width, expose_ev->height); break; if (expose_ev->count == 0) redraw = 1;
break;
} }
free (ev); free (ev);
} }
xcb_flush (c);
if (hup) {
if (!permanent) break; /* No more data, bail out */
else sleep (1); /* Idle loop, yield to avoid cpu hogging */
} }
} }
if (redraw) /* Copy our temporary pixmap onto the window */
xcb_copy_area (c, canvas, win, gc, 0, 0, 0, 0, bw, BAR_HEIGHT);
xcb_flush (c);
if (hup && !permanent)
break; /* No more data, bail out */
}
return 0; return 0;
} }