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authorMattias Andrée <maandree@operamail.com>2014-04-05 14:02:47 +0200
committerMattias Andrée <maandree@operamail.com>2014-04-05 14:02:47 +0200
commit2f925690ef5713bd556db2c3a7dac046f003f2ae (patch)
tree4deef36e38277992c11177d69fb779c78c2f27f4 /src/__main__.py
parentdocument + fix drm edid fetch bug where the length was larger than anticipated, add race-condition resilience as well (diff)
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make sure that `reset` runs after an exception
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to '')
-rwxr-xr-xsrc/__main__.py193
1 files changed, 97 insertions, 96 deletions
diff --git a/src/__main__.py b/src/__main__.py
index b34992c..b73108b 100755
--- a/src/__main__.py
+++ b/src/__main__.py
@@ -426,106 +426,107 @@ def continuous_run():
with_fadein = lambda : (fadein_steps > 0) and (fadein_time is not None) and not panicgate
with_fadeout = lambda : (fadeout_steps > 0) and (fadeout_time is not None)
- ## Run until we get a signal to exit
- # When the program start we are fading in,
- # than we run in normal periodical state.
- # But if we get a SIGUSR2 signal we start
- # fading out until we get another at which
- # point we start fading in. When we get a
- # SIGUSR2 we set `panicgate` to be false.
- while running:
- if trans_delta == 0:
- ## Run periodically
- # Apply adjustments
- p(now(), None)
- # and, assuming that we should not exit,
- if running:
- # sleep for a time interval selected
- # by the configuration script.
- sleep(wait_period)
- elif trans_delta < 0:
- ## Fade in
- # If we are using fading,
- if with_fadein():
- # and just started
- if trans_alpha == 0:
- # Apply fully clean adjustments,
- p(now(), 1 - trans_alpha)
- # and and sleep for a short period.
+ try:
+ ## Run until we get a signal to exit
+ # When the program start we are fading in,
+ # than we run in normal periodical state.
+ # But if we get a SIGUSR2 signal we start
+ # fading out until we get another at which
+ # point we start fading in. When we get a
+ # SIGUSR2 we set `panicgate` to be false.
+ while running:
+ if trans_delta == 0:
+ ## Run periodically
+ # Apply adjustments
+ p(now(), None)
+ # and, assuming that we should not exit,
+ if running:
+ # sleep for a time interval selected
+ # by the configuration script.
+ sleep(wait_period)
+ elif trans_delta < 0:
+ ## Fade in
+ # If we are using fading,
+ if with_fadein():
+ # and just started
+ if trans_alpha == 0:
+ # Apply fully clean adjustments,
+ p(now(), 1 - trans_alpha)
+ # and and sleep for a short period.
+ sleep(fadein_time / fadein_steps)
+ # Then step towards adjusted state
+ trans_alpha -= 1 / fadein_steps
+ # If we are not fading, which might actually
+ # have beend should from `periodically`, which
+ # is invoked by `p`,
+ if not with_fadein():
+ # The jump to adjusted state and
+ # stop transitioning
+ trans_alpha = trans_delta = 0
+ # Then apply adjusetents
+ p(now(), 1 - trans_alpha)
+ # And if we are using fading at this point,
+ if with_fadein():
+ # wait for a short period.
sleep(fadein_time / fadein_steps)
- # Then step towards adjusted state
- trans_alpha -= 1 / fadein_steps
- # If we are not fading, which might actually
- # have beend should from `periodically`, which
- # is invoked by `p`,
- if not with_fadein():
- # The jump to adjusted state and
- # stop transitioning
- trans_alpha = trans_delta = 0
- # Then apply adjusetents
- p(now(), 1 - trans_alpha)
- # And if we are using fading at this point,
- if with_fadein():
- # wait for a short period.
- sleep(fadein_time / fadein_steps)
- else:
- ## Fade out
- if with_fadeout():
- # Step towards clean adjustments if we are using fading
- trans_alpha += 1 / fadeout_steps
- # If we have clean adjustments (or hyperclean), or
- # if we do not using fading
- if (trans_alpha >= 1) or not with_fadeout():
- # set the adjustments to clean.
- trans_alpha = 1
- # Apply adjustments. If `trans_alpha` is 0, we have `fade = -1`
- # which means that we are fading away from adjustements but are
- # still at 100 % adjustments, moving towards `fade = 0` we are
- # removing the adjustments gradually.
- p(now(), -1 + trans_alpha)
- # If we have reached a fully clean adjustment state,
- if trans_alpha == 1:
- try:
- # then sleep until we gate a wakeup signal,
- # which would be at the next SIGUSR2.
- with sleep_condition:
- sleep_condition.wait()
- except KeyboardInterrupt:
- # Emulate `kill -TERM` on Control+c
- signal_SIGTERM(0, None)
else:
- # Otherwise, if are are using fading
+ ## Fade out
if with_fadeout():
- # we sleep for a short period.
- sleep(fadeout_time / fadeout_steps)
-
- ## Fade out
- if with_fadeout():
- # If we should fade, fade will we have not got
- # two SIGTERM signals or keyboard interrupts
- while not panic:
- # Step towards clean adjustments
- trans_alpha += 1 / fadeout_steps
- # If we have clean adjustments (or hyperclean),
- if trans_alpha >= 1:
- # set the adjustments to clean (in case they where hyperclean)
- trans_alpha = 1
- # and signal that want should stop after this stop.
- panic = True
- # Apply adjustments. If `trans_alpha` is 0, we have `fade = -1`
- # which means that we are fading away from adjustements but are
- # still at 100 % adjustments, moving towards `fade = 0` we are
- # removing the adjustments gradually.
- p(now(), -1 + trans_alpha)
- # Stop if we should no longer fade,
- if not with_fadeout():
- break
- # before we sleep. If we did not break
- # would would run into errors.
- sleep(fadeout_time / fadeout_steps)
+ # Step towards clean adjustments if we are using fading
+ trans_alpha += 1 / fadeout_steps
+ # If we have clean adjustments (or hyperclean), or
+ # if we do not using fading
+ if (trans_alpha >= 1) or not with_fadeout():
+ # set the adjustments to clean.
+ trans_alpha = 1
+ # Apply adjustments. If `trans_alpha` is 0, we have `fade = -1`
+ # which means that we are fading away from adjustements but are
+ # still at 100 % adjustments, moving towards `fade = 0` we are
+ # removing the adjustments gradually.
+ p(now(), -1 + trans_alpha)
+ # If we have reached a fully clean adjustment state,
+ if trans_alpha == 1:
+ try:
+ # then sleep until we gate a wakeup signal,
+ # which would be at the next SIGUSR2.
+ with sleep_condition:
+ sleep_condition.wait()
+ except KeyboardInterrupt:
+ # Emulate `kill -TERM` on Control+c
+ signal_SIGTERM(0, None)
+ else:
+ # Otherwise, if are are using fading
+ if with_fadeout():
+ # we sleep for a short period.
+ sleep(fadeout_time / fadeout_steps)
- ## Reset
- reset()
+ ## Fade out
+ if with_fadeout():
+ # If we should fade, fade will we have not got
+ # two SIGTERM signals or keyboard interrupts
+ while not panic:
+ # Step towards clean adjustments
+ trans_alpha += 1 / fadeout_steps
+ # If we have clean adjustments (or hyperclean),
+ if trans_alpha >= 1:
+ # set the adjustments to clean (in case they where hyperclean)
+ trans_alpha = 1
+ # and signal that want should stop after this stop.
+ panic = True
+ # Apply adjustments. If `trans_alpha` is 0, we have `fade = -1`
+ # which means that we are fading away from adjustements but are
+ # still at 100 % adjustments, moving towards `fade = 0` we are
+ # removing the adjustments gradually.
+ p(now(), -1 + trans_alpha)
+ # Stop if we should no longer fade,
+ if not with_fadeout():
+ break
+ # before we sleep. If we did not break
+ # would would run into errors.
+ sleep(fadeout_time / fadeout_steps)
+ finally:
+ ## Reset
+ reset()
## Read command line arguments