/* timers.c --- detecting when the user is idle, and other timer-related tasks.
- * xscreensaver, Copyright (c) 1991-1997, 1998
- * Jamie Zawinski <jwz@jwz.org>
+ * xscreensaver, Copyright (c) 1991-2008 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
# include "config.h"
#endif
-/* #define DEBUG_TIMERS */
-
#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Intrinsic.h>
#include <X11/Xos.h>
+#include <time.h>
+#include <sys/time.h>
#ifdef HAVE_XMU
# ifndef VMS
# include <X11/Xmu/Error.h>
#include <X11/extensions/XScreenSaver.h>
#endif /* HAVE_SGI_SAVER_EXTENSION */
-#ifdef HAVE_XHPDISABLERESET
-# include <X11/XHPlib.h>
- extern Bool hp_locked_p; /* from windows.c */
-#endif /* HAVE_XHPDISABLERESET */
+#ifdef HAVE_RANDR
+#include <X11/extensions/Xrandr.h>
+#endif /* HAVE_RANDR */
#include "xscreensaver.h"
+#undef ABS
+#define ABS(x)((x)<0?-(x):(x))
+
+#undef MAX
+#define MAX(x,y)((x)>(y)?(x):(y))
+
+
#ifdef HAVE_PROC_INTERRUPTS
static Bool proc_interrupts_activity_p (saver_info *si);
#endif /* HAVE_PROC_INTERRUPTS */
+static void check_for_clock_skew (saver_info *si);
+
void
idle_timer (XtPointer closure, XtIntervalId *id)
fake_event.xany.display = si->dpy;
fake_event.xany.window = 0;
XPutBackEvent (si->dpy, &fake_event);
+
+ /* If we are the timer that just went off, clear the pointer to the id. */
+ if (id)
+ {
+ if (si->timer_id && *id != si->timer_id)
+ abort(); /* oops, scheduled timer twice?? */
+ si->timer_id = 0;
+ }
}
-static void
+void
schedule_wakeup_event (saver_info *si, Time when, Bool verbose_p)
{
+ if (si->timer_id)
+ {
+ if (verbose_p)
+ fprintf (stderr, "%s: idle_timer already running\n", blurb());
+ return;
+ }
+
/* Wake up periodically to ask the server if we are idle. */
si->timer_id = XtAppAddTimeOut (si->app, when, idle_timer,
(XtPointer) si);
-#ifdef DEBUG_TIMERS
if (verbose_p)
fprintf (stderr, "%s: starting idle_timer (%ld, %ld)\n",
blurb(), when, si->timer_id);
-#endif /* DEBUG_TIMERS */
}
unsigned long events;
Window root, parent, *kids;
unsigned int nkids;
+ int screen_no;
if (XtWindowToWidget (si->dpy, window))
/* If it's one of ours, don't mess up its event mask. */
if (window == root)
top_p = False;
+ /* Figure out which screen this window is on, for the diagnostics. */
+ for (screen_no = 0; screen_no < si->nscreens; screen_no++)
+ if (root == RootWindowOfScreen (si->screens[screen_no].screen))
+ break;
+
XGetWindowAttributes (si->dpy, window, &attrs);
events = ((attrs.all_event_masks | attrs.do_not_propagate_mask)
& KeyPressMask);
the mouse or touching the keyboard, we won't know that they've been
active, and the screensaver will come on. That sucks, but I don't
know how to get around it.
+
+ Since X presents mouse wheels as clicks, this applies to those, too:
+ scrolling through a document using only the mouse wheel doesn't
+ count as activity... Fortunately, /proc/interrupts helps, on
+ systems that have it. Oh, if it's a PS/2 mouse, not serial or USB.
+ This sucks!
*/
XSelectInput (si->dpy, window, SubstructureNotifyMask | events);
- if (top_p && p->verbose_p && (events & KeyPressMask))
+ if (top_p && p->debug_p && (events & KeyPressMask))
{
/* Only mention one window per tree (hack hack). */
- fprintf (stderr, "%s: selected KeyPress on 0x%lX\n", blurb(),
- (unsigned long) window);
+ fprintf (stderr, "%s: %d: selected KeyPress on 0x%lX\n",
+ blurb(), screen_no, (unsigned long) window);
top_p = False;
}
saver_info *si = (saver_info *) closure;
saver_preferences *p = &si->prefs;
Time how_long = p->cycle;
+
+ if (si->selection_mode > 0 &&
+ screenhack_running_p (si))
+ /* If we're in "SELECT n" mode, the cycle timer going off will just
+ restart this same hack again. There's not much point in doing this
+ every 5 or 10 minutes, but on the other hand, leaving one hack running
+ for days is probably not a great idea, since they tend to leak and/or
+ crash. So, restart the thing once an hour. */
+ how_long = 1000 * 60 * 60;
+
if (si->dbox_up_p)
{
if (p->verbose_p)
else
{
maybe_reload_init_file (si);
- if (p->verbose_p)
- fprintf (stderr, "%s: changing graphics hacks.\n", blurb());
kill_screenhack (si);
- spawn_screenhack (si, False);
+
+ if (!si->throttled_p)
+ spawn_screenhack (si, False);
+ else
+ {
+ raise_window (si, True, True, False);
+ if (p->verbose_p)
+ fprintf (stderr, "%s: not launching new hack (throttled.)\n",
+ blurb());
+ }
}
- si->cycle_id = XtAppAddTimeOut (si->app, how_long, cycle_timer,
- (XtPointer) si);
-#ifdef DEBUG_TIMERS
- if (p->verbose_p)
- fprintf (stderr, "%s: starting cycle_timer (%ld, %ld)\n",
- blurb(), how_long, si->cycle_id);
-#endif /* DEBUG_TIMERS */
+ if (how_long > 0)
+ {
+ si->cycle_id = XtAppAddTimeOut (si->app, how_long, cycle_timer,
+ (XtPointer) si);
+
+ if (p->debug_p)
+ fprintf (stderr, "%s: starting cycle_timer (%ld, %ld)\n",
+ blurb(), how_long, si->cycle_id);
+ }
+ else
+ {
+ if (p->debug_p)
+ fprintf (stderr, "%s: not starting cycle_timer: how_long == %ld\n",
+ blurb(), (unsigned long) how_long);
+ }
}
saver_preferences *p = &si->prefs;
if (p->verbose_p)
- fprintf (stderr, "%s: timed out; activating lock\n", blurb());
- si->locked_p = True;
-
-#ifdef HAVE_XHPDISABLERESET
- if (!hp_locked_p)
- {
- XHPDisableReset (si->dpy); /* turn off C-Sh-Reset */
- hp_locked_p = True;
- }
-#endif
+ fprintf (stderr, "%s: timed out; activating lock.\n", blurb());
+ set_locked_p (si, True);
}
/* Call this when user activity (or "simulated" activity) has been noticed.
*/
-static void
+void
reset_timers (saver_info *si)
{
saver_preferences *p = &si->prefs;
if (si->timer_id)
{
-#ifdef DEBUG_TIMERS
- if (p->verbose_p)
+ if (p->debug_p)
fprintf (stderr, "%s: killing idle_timer (%ld, %ld)\n",
blurb(), p->timeout, si->timer_id);
-#endif /* DEBUG_TIMERS */
XtRemoveTimeOut (si->timer_id);
+ si->timer_id = 0;
}
- schedule_wakeup_event (si, p->timeout, p->verbose_p); /* sets si->timer_id */
+ schedule_wakeup_event (si, p->timeout, p->debug_p); /* sets si->timer_id */
if (si->cycle_id) abort (); /* no cycle timer when inactive */
si->last_activity_time = time ((time_t *) 0);
+
+ /* This will (hopefully, supposedly) tell the server to re-set its
+ DPMS timer. Without this, the -deactivate clientmessage would
+ prevent xscreensaver from blanking, but would not prevent the
+ monitor from powering down. */
+#if 0
+ /* #### With some servers, this causes the screen to flicker every
+ time a key is pressed! Ok, I surrender. I give up on ever
+ having DPMS work properly.
+ */
+ XForceScreenSaver (si->dpy, ScreenSaverReset);
+
+ /* And if the monitor is already powered off, turn it on.
+ You'd think the above would do that, but apparently not? */
+ monitor_power_on (si);
+#endif
+
+}
+
+
+/* Returns true if the mouse has moved since the last time we checked.
+ Small motions (of less than "hysteresis" pixels/second) are ignored.
+ */
+static Bool
+pointer_moved_p (saver_screen_info *ssi, Bool mods_p)
+{
+ saver_info *si = ssi->global;
+ saver_preferences *p = &si->prefs;
+
+ Window root, child;
+ int root_x, root_y, x, y;
+ unsigned int mask;
+ time_t now = time ((time_t *) 0);
+ unsigned int distance, dps;
+ unsigned long seconds = 0;
+ Bool moved_p = False;
+
+ /* don't check xinerama pseudo-screens. */
+ if (!ssi->real_screen_p) return False;
+
+ if (!XQueryPointer (si->dpy, ssi->screensaver_window, &root, &child,
+ &root_x, &root_y, &x, &y, &mask))
+ {
+ /* If XQueryPointer() returns false, the mouse is not on this screen.
+ */
+ x = root_x = -1;
+ y = root_y = -1;
+ root = child = 0;
+ mask = 0;
+ }
+
+ distance = MAX (ABS (ssi->poll_mouse_last_root_x - root_x),
+ ABS (ssi->poll_mouse_last_root_y - root_y));
+ seconds = (now - ssi->poll_mouse_last_time);
+
+
+ /* When the screen is blanked, we get MotionNotify events, but when not
+ blanked, we poll only every 5 seconds, and that's not enough resolution
+ to do hysteresis based on a 1 second interval. So, assume that any
+ motion we've seen during the 5 seconds when our eyes were closed happened
+ in the last 1 second instead.
+ */
+ if (seconds > 1) seconds = 1;
+
+ dps = (seconds <= 0 ? distance : (distance / seconds));
+
+ /* Motion only counts if the rate is more than N pixels per second.
+ */
+ if (dps >= p->pointer_hysteresis &&
+ distance > 0)
+ moved_p = True;
+
+ /* If the mouse is not on this screen but used to be, that's motion.
+ If the mouse was not on this screen, but is now, that's motion.
+ */
+ {
+ Bool on_screen_p = (root_x != -1 && root_y != -1);
+ Bool was_on_screen_p = (ssi->poll_mouse_last_root_x != -1 &&
+ ssi->poll_mouse_last_root_y != -1);
+
+ if (on_screen_p != was_on_screen_p)
+ moved_p = True;
+ }
+
+ if (p->debug_p && (distance != 0 || moved_p))
+ {
+ fprintf (stderr, "%s: %d: pointer %s", blurb(), ssi->number,
+ (moved_p ? "moved: " : "ignored:"));
+ if (ssi->poll_mouse_last_root_x == -1)
+ fprintf (stderr, "off screen");
+ else
+ fprintf (stderr, "%d,%d",
+ ssi->poll_mouse_last_root_x,
+ ssi->poll_mouse_last_root_y);
+ fprintf (stderr, " -> ");
+ if (root_x == -1)
+ fprintf (stderr, "off screen");
+ else
+ fprintf (stderr, "%d,%d", root_x, root_y);
+ if (ssi->poll_mouse_last_root_x != -1 && root_x != -1)
+ fprintf (stderr, " (%d,%d; %d/%lu=%d)",
+ ABS(ssi->poll_mouse_last_root_x - root_x),
+ ABS(ssi->poll_mouse_last_root_y - root_y),
+ distance, seconds, dps);
+
+ fprintf (stderr, ".\n");
+ }
+
+ if (!moved_p &&
+ mods_p &&
+ mask != ssi->poll_mouse_last_mask)
+ {
+ moved_p = True;
+
+ if (p->debug_p)
+ fprintf (stderr, "%s: %d: modifiers changed: 0x%04x -> 0x%04x.\n",
+ blurb(), ssi->number, ssi->poll_mouse_last_mask, mask);
+ }
+
+ si->last_activity_screen = ssi;
+ ssi->poll_mouse_last_child = child;
+ ssi->poll_mouse_last_mask = mask;
+
+ if (moved_p || seconds > 0)
+ {
+ ssi->poll_mouse_last_time = now;
+ ssi->poll_mouse_last_root_x = root_x;
+ ssi->poll_mouse_last_root_y = root_y;
+ }
+
+ return moved_p;
}
*/
abort ();
- si->check_pointer_timer_id =
+ if (id && *id == si->check_pointer_timer_id) /* this is us - it's expired */
+ si->check_pointer_timer_id = 0;
+
+ if (si->check_pointer_timer_id) /* only queue one at a time */
+ XtRemoveTimeOut (si->check_pointer_timer_id);
+
+ si->check_pointer_timer_id = /* now re-queue */
XtAppAddTimeOut (si->app, p->pointer_timeout, check_pointer_timer,
(XtPointer) si);
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
- Window root, child;
- int root_x, root_y, x, y;
- unsigned int mask;
-
- XQueryPointer (si->dpy, ssi->screensaver_window, &root, &child,
- &root_x, &root_y, &x, &y, &mask);
-
- if (root_x == ssi->poll_mouse_last_root_x &&
- root_y == ssi->poll_mouse_last_root_y &&
- child == ssi->poll_mouse_last_child &&
- mask == ssi->poll_mouse_last_mask)
- continue;
-
- active_p = True;
-
-#ifdef DEBUG_TIMERS
- if (p->verbose_p)
- if (root_x == ssi->poll_mouse_last_root_x &&
- root_y == ssi->poll_mouse_last_root_y &&
- child == ssi->poll_mouse_last_child)
- fprintf (stderr, "%s: modifiers changed at %s on screen %d.\n",
- blurb(), timestring(), i);
- else
- fprintf (stderr, "%s: pointer moved at %s on screen %d.\n",
- blurb(), timestring(), i);
-#endif /* DEBUG_TIMERS */
-
- si->last_activity_screen = ssi;
- ssi->poll_mouse_last_root_x = root_x;
- ssi->poll_mouse_last_root_y = root_y;
- ssi->poll_mouse_last_child = child;
- ssi->poll_mouse_last_mask = mask;
+ if (pointer_moved_p (ssi, True))
+ active_p = True;
}
#ifdef HAVE_PROC_INTERRUPTS
si->using_proc_interrupts &&
proc_interrupts_activity_p (si))
{
-# ifdef DEBUG_TIMERS
- if (p->verbose_p)
- fprintf (stderr, "%s: /proc/interrupts activity at %s.\n",
- blurb(), timestring());
-# endif /* DEBUG_TIMERS */
active_p = True;
}
#endif /* HAVE_PROC_INTERRUPTS */
if (active_p)
reset_timers (si);
+
+ check_for_clock_skew (si);
+}
+
+
+/* An unfortunate situation is this: the saver is not active, because the
+ user has been typing. The machine is a laptop. The user closes the lid
+ and suspends it. The CPU halts. Some hours later, the user opens the
+ lid. At this point, Xt's timers will fire, and xscreensaver will blank
+ the screen.
+
+ So far so good -- well, not really, but it's the best that we can do,
+ since the OS doesn't send us a signal *before* shutdown -- but if the
+ user had delayed locking (lockTimeout > 0) then we should start off
+ in the locked state, rather than only locking N minutes from when the
+ lid was opened. Also, eschewing fading is probably a good idea, to
+ clamp down as soon as possible.
+
+ We only do this when we'd be polling the mouse position anyway.
+ This amounts to an assumption that machines with APM support also
+ have /proc/interrupts.
+ */
+static void
+check_for_clock_skew (saver_info *si)
+{
+ saver_preferences *p = &si->prefs;
+ time_t now = time ((time_t *) 0);
+ long shift = now - si->last_wall_clock_time;
+
+ if (p->debug_p)
+ {
+ int i = (si->last_wall_clock_time == 0 ? 0 : shift);
+ fprintf (stderr,
+ "%s: checking wall clock for hibernation (%d:%02d:%02d).\n",
+ blurb(),
+ (i / (60 * 60)), ((i / 60) % 60), (i % 60));
+ }
+
+ if (si->last_wall_clock_time != 0 &&
+ shift > (p->timeout / 1000))
+ {
+ if (p->verbose_p)
+ fprintf (stderr, "%s: wall clock has jumped by %ld:%02ld:%02ld!\n",
+ blurb(),
+ (shift / (60 * 60)), ((shift / 60) % 60), (shift % 60));
+
+ si->emergency_lock_p = True;
+ idle_timer ((XtPointer) si, 0);
+ }
+
+ si->last_wall_clock_time = now;
}
+
static void
dispatch_event (saver_info *si, XEvent *event)
{
}
+static void
+swallow_unlock_typeahead_events (saver_info *si, XEvent *e)
+{
+ XEvent event;
+ char buf [100];
+ int i = 0;
+
+ memset (buf, 0, sizeof(buf));
+
+ event = *e;
+
+ do
+ {
+ if (event.xany.type == KeyPress)
+ {
+ char s[2];
+ int size = XLookupString ((XKeyEvent *) &event, s, 1, 0, 0);
+ if (size != 1) continue;
+ switch (*s)
+ {
+ case '\010': case '\177': /* Backspace */
+ if (i > 0) i--;
+ break;
+ case '\025': case '\030': /* Erase line */
+ case '\012': case '\015': /* Enter */
+ i = 0;
+ break;
+ case '\040': /* Space */
+ if (i == 0)
+ break; /* ignore space at beginning of line */
+ /* else, fall through */
+ default:
+ buf [i++] = *s;
+ break;
+ }
+ }
+
+ } while (i < sizeof(buf)-1 &&
+ XCheckMaskEvent (si->dpy, KeyPressMask, &event));
+
+ buf[i] = 0;
+
+ if (si->unlock_typeahead)
+ {
+ memset (si->unlock_typeahead, 0, strlen(si->unlock_typeahead));
+ free (si->unlock_typeahead);
+ }
+
+ if (i > 0)
+ si->unlock_typeahead = strdup (buf);
+ else
+ si->unlock_typeahead = 0;
+
+ memset (buf, 0, sizeof(buf));
+}
+
+
/* methods of detecting idleness:
explicitly informed by SGI SCREEN_SAVER server event;
{
if (polling_for_idleness)
/* This causes a no-op event to be delivered to us in a while, so that
- we come back around through the event loop again. Use of this timer
- is economical: for example, if the screensaver should come on in 5
- minutes, and the user has been idle for 2 minutes, then this
- timeout will go off no sooner than 3 minutes from now. */
- schedule_wakeup_event (si, p->timeout, p->verbose_p);
+ we come back around through the event loop again. */
+ schedule_wakeup_event (si, p->timeout, p->debug_p);
if (polling_mouse_position)
/* Check to see if the mouse has moved, and set up a repeating timer
if (until_idle_p)
{
Time idle;
+
+ /* We may be idle; check one last time to see if the mouse has
+ moved, just in case the idle-timer went off within the 5 second
+ window between mouse polling. If the mouse has moved, then
+ check_pointer_timer() will reset last_activity_time.
+ */
+ if (polling_mouse_position)
+ check_pointer_timer ((XtPointer) si, 0);
+
#ifdef HAVE_XIDLE_EXTENSION
if (si->using_xidle_extension)
{
/* Look, we've been idle long enough. We're done. */
goto DONE;
}
+ else if (si->emergency_lock_p)
+ {
+ /* Oops, the wall clock has jumped far into the future, so
+ we need to lock down in a hurry! */
+ goto DONE;
+ }
else
{
/* The event went off, but it turns out that the user has not
yet been idle for long enough. So re-signal the event.
- */
+ Be economical: if we should blank after 5 minutes, and the
+ user has been idle for 2 minutes, then set this timer to
+ go off in 3 minutes.
+ */
if (polling_for_idleness)
- schedule_wakeup_event (si, p->timeout - idle, p->verbose_p);
+ schedule_wakeup_event (si, p->timeout - idle, p->debug_p);
}
}
break;
if (scanning_all_windows)
{
Window w = event.xcreatewindow.window;
-#ifdef DEBUG_TIMERS
- start_notice_events_timer (si, w, p->verbose_p);
-#else /* !DEBUG_TIMERS */
- start_notice_events_timer (si, w, False);
-#endif /* !DEBUG_TIMERS */
+ start_notice_events_timer (si, w, p->debug_p);
}
break;
case ButtonRelease:
case MotionNotify:
-#ifdef DEBUG_TIMERS
- if (p->verbose_p)
+ if (p->debug_p)
{
+ Window root=0, window=0;
+ int x=-1, y=-1;
+ const char *type = 0;
if (event.xany.type == MotionNotify)
- fprintf (stderr,"%s: MotionNotify at %s\n",blurb(),timestring());
+ {
+ /*type = "MotionNotify";*/
+ root = event.xmotion.root;
+ window = event.xmotion.window;
+ x = event.xmotion.x_root;
+ y = event.xmotion.y_root;
+ }
else if (event.xany.type == KeyPress)
- fprintf (stderr, "%s: KeyPress seen on 0x%X at %s\n", blurb(),
- (unsigned int) event.xkey.window, timestring ());
+ {
+ type = "KeyPress";
+ root = event.xkey.root;
+ window = event.xkey.window;
+ x = y = -1;
+ }
else if (event.xany.type == ButtonPress)
- fprintf (stderr, "%s: ButtonPress seen on 0x%X at %s\n", blurb(),
- (unsigned int) event.xbutton.window, timestring ());
+ {
+ type = "ButtonPress";
+ root = event.xkey.root;
+ window = event.xkey.window;
+ x = event.xmotion.x_root;
+ y = event.xmotion.y_root;
+ }
+
+ if (type)
+ {
+ int i;
+ for (i = 0; i < si->nscreens; i++)
+ if (root == RootWindowOfScreen (si->screens[i].screen))
+ break;
+ fprintf (stderr,"%s: %d: %s on 0x%lx",
+ blurb(), i, type, (unsigned long) window);
+
+ /* Be careful never to do this unless in -debug mode, as
+ this could expose characters from the unlock password. */
+ if (p->debug_p && event.xany.type == KeyPress)
+ {
+ KeySym keysym;
+ char c = 0;
+ XLookupString (&event.xkey, &c, 1, &keysym, 0);
+ fprintf (stderr, " (%s%s)",
+ (event.xkey.send_event ? "synthetic " : ""),
+ XKeysymToString (keysym));
+ }
+
+ if (x == -1)
+ fprintf (stderr, "\n");
+ else
+ fprintf (stderr, " at %d,%d.\n", x, y);
+ }
}
-#endif /* DEBUG_TIMERS */
/* If any widgets want to handle this event, let them. */
dispatch_event (si, &event);
+
+ /* If we got a MotionNotify event, figure out what screen it
+ was on and poll the mouse there: if the mouse hasn't moved
+ far enough to count as "real" motion, then ignore this
+ event.
+ */
+ if (event.xany.type == MotionNotify)
+ {
+ int i;
+ for (i = 0; i < si->nscreens; i++)
+ if (event.xmotion.root ==
+ RootWindowOfScreen (si->screens[i].screen))
+ break;
+ if (i < si->nscreens)
+ {
+ if (!pointer_moved_p (&si->screens[i], False))
+ continue;
+ }
+ }
+
+
/* We got a user event.
If we're waiting for the user to become active, this is it.
If we're waiting until the user becomes idle, reset the timers
else
#endif /* HAVE_SGI_SAVER_EXTENSION */
+#ifdef HAVE_RANDR
+ if (event.type == (si->randr_event_number + RRScreenChangeNotify))
+ {
+ /* The Resize and Rotate extension sends an event when the
+ size, rotation, or refresh rate of the screen has changed. */
+
+ XRRScreenChangeNotifyEvent *xrr_event =
+ (XRRScreenChangeNotifyEvent *) &event;
+ /* XRRRootToScreen is in Xrandr.h 1.4, 2001/06/07 */
+ int screen = XRRRootToScreen (si->dpy, xrr_event->window);
+
+ if (p->verbose_p)
+ {
+ if (si->screens[screen].width == xrr_event->width &&
+ si->screens[screen].height == xrr_event->height)
+ fprintf (stderr,
+ "%s: %d: no-op screen size change event (%dx%d)\n",
+ blurb(), screen,
+ xrr_event->width, xrr_event->height);
+ else
+ fprintf (stderr,
+ "%s: %d: screen size changed from %dx%d to %dx%d\n",
+ blurb(), screen,
+ si->screens[screen].width,
+ si->screens[screen].height,
+ xrr_event->width, xrr_event->height);
+ }
+
+# ifdef RRScreenChangeNotifyMask
+ /* Inform Xlib that it's ok to update its data structures. */
+ XRRUpdateConfiguration (&event); /* Xrandr.h 1.9, 2002/09/29 */
+# endif /* RRScreenChangeNotifyMask */
+
+ /* Resize the existing xscreensaver windows and cached ssi data. */
+ resize_screensaver_window (si);
+ }
+ else
+#endif /* HAVE_RANDR */
+
/* Just some random event. Let the Widgets handle it, if desired. */
dispatch_event (si, &event);
}
doesn't exhibit itself without an extension, because in that case,
there's only one event generated by user activity, not two.)
*/
- XCheckMaskEvent (si->dpy, (KeyPressMask|ButtonPressMask|PointerMotionMask),
- &event);
+ if (!until_idle_p && si->locked_p)
+ swallow_unlock_typeahead_events (si, &event);
+ else
+ while (XCheckMaskEvent (si->dpy,
+ (KeyPressMask|ButtonPressMask|PointerMotionMask),
+ &event))
+ ;
if (si->check_pointer_timer_id)
0: 309453991 timer
1: 4771729 keyboard
- but on later kernels with MP machines, it looks like this:
+ but in Linux 2.2 and 2.4 kernels with MP machines, it looks like this:
CPU0 CPU1
0: 1671450 1672618 IO-APIC-edge timer
1: 13037 13495 IO-APIC-edge keyboard
- Joy! So how are we expected to parse that? Well, this code doesn't
- parse it: it saves the last line with the string "keyboard" in it, and
- does a string-comparison to note when it has changed.
+ and in Linux 2.6, it's gotten even goofier: now there are two lines
+ labelled "i8042". One of them is the keyboard, and one of them is
+ the PS/2 mouse -- and of course, you can't tell them apart, except
+ by wiggling the mouse and noting which one changes:
- Thanks to Nat Friedman <nat@nat.org> for figuring out all of this crap.
+ CPU0 CPU1
+ 1: 32051 30864 IO-APIC-edge i8042
+ 12: 476577 479913 IO-APIC-edge i8042
- Note that this only checks for lines with "keyboard" in them. Perhaps we
- should also be checking for lines with "PS/2 Mouse" in them. But that
- would obviously fail to work for regular serial mice, and obviously just
- using COM1 would be bad news (turn off the screensaver because the modem
- is active, yum.)
+ Joy! So how are we expected to parse that? Well, this code doesn't
+ parse it: it saves the first line with the string "keyboard" (or
+ "i8042") in it, and does a string-comparison to note when it has
+ changed. If there are two "i8042" lines, we assume the first is
+ the keyboard and the second is the mouse (doesn't matter which is
+ which, really, as long as we don't compare them against each other.)
+
+ Thanks to Nat Friedman <nat@nat.org> for figuring out most of this crap.
+
+ Note that if you have a serial or USB mouse, or a USB keyboard, it won't
+ detect it. That's because there's no way to tell the difference between a
+ serial mouse and a general serial port, and all USB devices look the same
+ from here. It would be somewhat unfortunate to have the screensaver turn
+ off when the modem on COM1 burped, or when a USB disk was accessed.
*/
f = fopen (PROC_INTERRUPTS, "r");
if (!f)
- return False;
+ {
+ if (why) *why = "does not exist";
+ return False;
+ }
fclose (f);
return True;
static FILE *f0 = 0;
FILE *f1 = 0;
int fd;
- static char last_line[255] = { 0, };
- char new_line[sizeof(last_line)];
+ static char last_kbd_line[255] = { 0, };
+ static char last_ptr_line[255] = { 0, };
+ char new_line[sizeof(last_kbd_line)];
+ Bool checked_kbd = False, kbd_changed = False;
+ Bool checked_ptr = False, ptr_changed = False;
+ int i8042_count = 0;
if (!f0)
{
goto FAIL;
}
- /* Now read through the pseudo-file until we find the "keyboard" line. */
+ /* Now read through the pseudo-file until we find the "keyboard",
+ "PS/2 mouse", or "i8042" lines. */
while (fgets (new_line, sizeof(new_line)-1, f1))
- if (strstr (new_line, "keyboard"))
- {
- Bool diff = (*last_line &&
- !!strcmp (new_line, last_line));
- strcpy (last_line, new_line); /* save this line for next time */
- fclose (f1);
- return diff;
- }
+ {
+ Bool i8042_p = !!strstr (new_line, "i8042");
+ if (i8042_p) i8042_count++;
+
+ if (strchr (new_line, ','))
+ {
+ /* Ignore any line that has a comma on it: this is because
+ a setup like this:
+
+ 12: 930935 XT-PIC usb-uhci, PS/2 Mouse
+
+ is really bad news. It *looks* like we can note mouse
+ activity from that line, but really, that interrupt gets
+ fired any time any USB device has activity! So we have
+ to ignore any shared IRQs.
+ */
+ }
+ else if (!checked_kbd &&
+ (strstr (new_line, "keyboard") ||
+ (i8042_p && i8042_count == 1)))
+ {
+ /* Assume the keyboard interrupt is the line that says "keyboard",
+ or the *first* line that says "i8042".
+ */
+ kbd_changed = (*last_kbd_line && !!strcmp (new_line, last_kbd_line));
+ strcpy (last_kbd_line, new_line);
+ checked_kbd = True;
+ }
+ else if (!checked_ptr &&
+ (strstr (new_line, "PS/2 Mouse") ||
+ (i8042_p && i8042_count == 2)))
+ {
+ /* Assume the mouse interrupt is the line that says "PS/2 mouse",
+ or the *second* line that says "i8042".
+ */
+ ptr_changed = (*last_ptr_line && !!strcmp (new_line, last_ptr_line));
+ strcpy (last_ptr_line, new_line);
+ checked_ptr = True;
+ }
+
+ if (checked_kbd && checked_ptr)
+ break;
+ }
+
+ if (checked_kbd || checked_ptr)
+ {
+ fclose (f1);
+
+ if (si->prefs.debug_p && (kbd_changed || ptr_changed))
+ fprintf (stderr, "%s: /proc/interrupts activity: %s\n",
+ blurb(),
+ ((kbd_changed && ptr_changed) ? "mouse and kbd" :
+ kbd_changed ? "kbd" :
+ ptr_changed ? "mouse" : "ERR"));
+
+ return (kbd_changed || ptr_changed);
+ }
- /* If we got here, we didn't find a "keyboard" line in the file at all. */
- fprintf (stderr, "%s: no keyboard data in %s?\n", blurb(), PROC_INTERRUPTS);
+
+ /* If we got here, we didn't find either a "keyboard" or a "PS/2 Mouse"
+ line in the file at all. */
+ fprintf (stderr, "%s: no keyboard or mouse data in %s?\n",
+ blurb(), PROC_INTERRUPTS);
FAIL:
if (f1)
watchdog_timer (XtPointer closure, XtIntervalId *id)
{
saver_info *si = (saver_info *) closure;
+ saver_preferences *p = &si->prefs;
disable_builtin_screensaver (si, False);
+ /* If the DPMS settings on the server have changed, change them back to
+ what ~/.xscreensaver says they should be. */
+ sync_server_dpms_settings (si->dpy,
+ (p->dpms_enabled_p &&
+ p->mode != DONT_BLANK),
+ p->dpms_standby / 1000,
+ p->dpms_suspend / 1000,
+ p->dpms_off / 1000,
+ False);
+
if (si->screen_blanked_p)
{
- Bool running_p = screenhack_running_p(si);
+ Bool running_p = screenhack_running_p (si);
-#ifdef DEBUG_TIMERS
- if (si->prefs.verbose_p)
- fprintf (stderr, "%s: watchdog timer raising %sscreen.\n",
- blurb(), (running_p ? "" : "and clearing "));
-#endif /* DEBUG_TIMERS */
+ if (si->dbox_up_p)
+ {
+ if (si->prefs.debug_p)
+ fprintf (stderr, "%s: dialog box is up: not raising screen.\n",
+ blurb());
+ }
+ else
+ {
+ if (si->prefs.debug_p)
+ fprintf (stderr, "%s: watchdog timer raising %sscreen.\n",
+ blurb(), (running_p ? "" : "and clearing "));
- raise_window (si, True, True, running_p);
+ raise_window (si, True, True, running_p);
+ }
- if (!monitor_powered_on_p (si))
+ if (screenhack_running_p (si) &&
+ !monitor_powered_on_p (si))
{
if (si->prefs.verbose_p)
fprintf (stderr,
- "%s: server reports that monitor has powered down; "
+ "%s: X says monitor has powered down; "
"killing running hacks.\n", blurb());
kill_screenhack (si);
}
+
+ /* Re-schedule this timer. The watchdog timer defaults to a bit less
+ than the hack cycle period, but is never longer than one hour.
+ */
+ si->watchdog_id = 0;
+ reset_watchdog_timer (si, True);
}
}
si->watchdog_id = XtAppAddTimeOut (si->app, p->watchdog_timeout,
watchdog_timer, (XtPointer) si);
-#ifdef DEBUG_TIMERS
- if (p->verbose_p)
+ if (p->debug_p)
fprintf (stderr, "%s: restarting watchdog_timer (%ld, %ld)\n",
blurb(), p->watchdog_timeout, si->watchdog_id);
-#endif /* DEBUG_TIMERS */
+ }
+}
+
+
+/* It's possible that a race condition could have led to the saver
+ window being unexpectedly still mapped. This can happen like so:
+
+ - screen is blanked
+ - hack is launched
+ - that hack tries to grab a screen image (it does this by
+ first unmapping the saver window, then remapping it.)
+ - hack unmaps window
+ - hack waits
+ - user becomes active
+ - hack re-maps window (*)
+ - driver kills subprocess
+ - driver unmaps window (**)
+
+ The race is that (*) might have been sent to the server before
+ the client process was killed, but, due to scheduling randomness,
+ might not have been received by the server until after (**).
+ In other words, (*) and (**) might happen out of order, meaning
+ the driver will unmap the window, and then after that, the
+ recently-dead client will re-map it. This leaves the user
+ locked out (it looks like a desktop, but it's not!)
+
+ To avoid this: after un-blanking the screen, we launch a timer
+ that wakes up once a second for ten seconds, and makes damned
+ sure that the window is still unmapped.
+ */
+
+void
+de_race_timer (XtPointer closure, XtIntervalId *id)
+{
+ saver_info *si = (saver_info *) closure;
+ saver_preferences *p = &si->prefs;
+ int secs = 1;
+ if (id == 0) /* if id is 0, this is the initialization call. */
+ {
+ si->de_race_ticks = 10;
+ if (p->verbose_p)
+ fprintf (stderr, "%s: starting de-race timer (%d seconds.)\n",
+ blurb(), si->de_race_ticks);
+ }
+ else
+ {
+ int i;
+ XSync (si->dpy, False);
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ Window w = ssi->screensaver_window;
+ XWindowAttributes xgwa;
+ XGetWindowAttributes (si->dpy, w, &xgwa);
+ if (xgwa.map_state != IsUnmapped)
+ {
+ if (p->verbose_p)
+ fprintf (stderr,
+ "%s: %d: client race! emergency unmap 0x%lx.\n",
+ blurb(), i, (unsigned long) w);
+ XUnmapWindow (si->dpy, w);
+ }
+ else if (p->debug_p)
+ fprintf (stderr, "%s: %d: (de-race of 0x%lx is cool.)\n",
+ blurb(), i, (unsigned long) w);
+ }
+ XSync (si->dpy, False);
+
+ si->de_race_ticks--;
+ }
+
+ if (id && *id == si->de_race_id)
+ si->de_race_id = 0;
+
+ if (si->de_race_id) abort();
+
+ if (si->de_race_ticks <= 0)
+ {
+ si->de_race_id = 0;
+ if (p->verbose_p)
+ fprintf (stderr, "%s: de-race completed.\n", blurb());
+ }
+ else
+ {
+ si->de_race_id = XtAppAddTimeOut (si->app, secs * 1000,
+ de_race_timer, closure);
}
}
projects / xscreensaver / blobdiff