584 lines
15 KiB
Python
584 lines
15 KiB
Python
from . import HydrusExceptions
|
|
import queue
|
|
import threading
|
|
import time
|
|
import traceback
|
|
from . import HydrusConstants as HC
|
|
from . import HydrusData
|
|
from . import HydrusGlobals as HG
|
|
from . import HydrusThreading
|
|
import os
|
|
from . import QtPorting as QP
|
|
|
|
class JobKey( object ):
|
|
|
|
def __init__( self, pausable = False, cancellable = False, maintenance_mode = HC.MAINTENANCE_FORCED, only_start_if_unbusy = False, stop_time = None, cancel_on_shutdown = True ):
|
|
|
|
self._key = HydrusData.GenerateKey()
|
|
|
|
self._creation_time = HydrusData.GetNowFloat()
|
|
|
|
self._pausable = pausable
|
|
self._cancellable = cancellable
|
|
self._maintenance_mode = maintenance_mode
|
|
self._only_start_if_unbusy = only_start_if_unbusy
|
|
self._stop_time = stop_time
|
|
self._cancel_on_shutdown = cancel_on_shutdown
|
|
|
|
self._start_time = HydrusData.GetNow()
|
|
|
|
self._deleted = threading.Event()
|
|
self._deletion_time = None
|
|
self._begun = threading.Event()
|
|
self._done = threading.Event()
|
|
self._cancelled = threading.Event()
|
|
self._paused = threading.Event()
|
|
|
|
self._yield_pause_period = 10
|
|
self._next_yield_pause = HydrusData.GetNow() + self._yield_pause_period
|
|
|
|
self._bigger_pause_period = 100
|
|
self._next_bigger_pause = HydrusData.GetNow() + self._bigger_pause_period
|
|
|
|
self._longer_pause_period = 1000
|
|
self._next_longer_pause = HydrusData.GetNow() + self._longer_pause_period
|
|
|
|
self._urls = []
|
|
self._variable_lock = threading.Lock()
|
|
self._variables = dict()
|
|
|
|
|
|
def __eq__( self, other ):
|
|
|
|
if isinstance( other, JobKey ):
|
|
|
|
return self.__hash__() == other.__hash__()
|
|
|
|
|
|
return NotImplemented
|
|
|
|
|
|
def __hash__( self ):
|
|
|
|
return self._key.__hash__()
|
|
|
|
|
|
def _CheckCancelTests( self ):
|
|
|
|
if not self._cancelled.is_set():
|
|
|
|
should_cancel = False
|
|
|
|
if self._cancel_on_shutdown and HydrusThreading.IsThreadShuttingDown():
|
|
|
|
should_cancel = True
|
|
|
|
|
|
if HG.client_controller.ShouldStopThisWork( self._maintenance_mode, self._stop_time ):
|
|
|
|
should_cancel = True
|
|
|
|
|
|
if should_cancel:
|
|
|
|
self.Cancel()
|
|
|
|
|
|
|
|
if not self._deleted.is_set():
|
|
|
|
if self._deletion_time is not None:
|
|
|
|
if HydrusData.TimeHasPassed( self._deletion_time ):
|
|
|
|
self.Finish()
|
|
|
|
self._deleted.set()
|
|
|
|
|
|
|
|
|
|
|
|
def AddURL( self, url ):
|
|
|
|
with self._variable_lock:
|
|
|
|
self._urls.append( url )
|
|
|
|
|
|
|
|
def Begin( self ): self._begun.set()
|
|
|
|
def CanBegin( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
if self.IsCancelled():
|
|
|
|
return False
|
|
|
|
|
|
if self._only_start_if_unbusy and HG.client_controller.SystemBusy():
|
|
|
|
return False
|
|
|
|
|
|
return True
|
|
|
|
|
|
def Cancel( self, seconds = None ):
|
|
|
|
if seconds is None:
|
|
|
|
self._cancelled.set()
|
|
|
|
self.Finish()
|
|
|
|
else:
|
|
|
|
HG.client_controller.CallLater( seconds, self.Cancel )
|
|
|
|
|
|
|
|
def Delete( self, seconds = None ):
|
|
|
|
if seconds is None:
|
|
|
|
self._deletion_time = HydrusData.GetNow()
|
|
|
|
else:
|
|
|
|
self._deletion_time = HydrusData.GetNow() + seconds
|
|
|
|
|
|
|
|
def DeleteVariable( self, name ):
|
|
|
|
with self._variable_lock:
|
|
|
|
if name in self._variables: del self._variables[ name ]
|
|
|
|
|
|
time.sleep( 0.00001 )
|
|
|
|
|
|
def Finish( self, seconds = None ):
|
|
|
|
if seconds is None:
|
|
|
|
self._done.set()
|
|
|
|
else:
|
|
|
|
HG.client_controller.CallLater( seconds, self.Finish )
|
|
|
|
|
|
|
|
def GetCreationTime( self ):
|
|
|
|
return self._creation_time
|
|
|
|
|
|
def GetIfHasVariable( self, name ):
|
|
|
|
with self._variable_lock:
|
|
|
|
if name in self._variables:
|
|
|
|
return self._variables[ name ]
|
|
|
|
else:
|
|
|
|
return None
|
|
|
|
|
|
|
|
|
|
def GetKey( self ):
|
|
|
|
return self._key
|
|
|
|
|
|
def GetURLs( self ):
|
|
|
|
with self._variable_lock:
|
|
|
|
return list( self._urls )
|
|
|
|
|
|
|
|
def HasVariable( self, name ):
|
|
|
|
with self._variable_lock: return name in self._variables
|
|
|
|
|
|
def IsBegun( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
return self._begun.is_set()
|
|
|
|
|
|
def IsCancellable( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
return self._cancellable and not self.IsDone()
|
|
|
|
|
|
def IsCancelled( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
return self._cancelled.is_set()
|
|
|
|
|
|
def IsDeleted( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
return self._deleted.is_set()
|
|
|
|
|
|
def IsDone( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
return self._done.is_set()
|
|
|
|
|
|
def IsPausable( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
return self._pausable and not self.IsDone()
|
|
|
|
|
|
def IsPaused( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
return self._paused.is_set() and not self.IsDone()
|
|
|
|
|
|
def IsWorking( self ):
|
|
|
|
self._CheckCancelTests()
|
|
|
|
return self.IsBegun() and not self.IsDone()
|
|
|
|
|
|
def PausePlay( self ):
|
|
|
|
if self._paused.is_set(): self._paused.clear()
|
|
else: self._paused.set()
|
|
|
|
|
|
def SetCancellable( self, value ): self._cancellable = value
|
|
|
|
def SetPausable( self, value ): self._pausable = value
|
|
|
|
def SetVariable( self, name, value ):
|
|
|
|
with self._variable_lock: self._variables[ name ] = value
|
|
|
|
time.sleep( 0.00001 )
|
|
|
|
|
|
def TimeRunning( self ):
|
|
|
|
return HydrusData.GetNow() - self._start_time
|
|
|
|
|
|
def ToString( self ):
|
|
|
|
stuff_to_print = []
|
|
|
|
with self._variable_lock:
|
|
|
|
if 'popup_title' in self._variables: stuff_to_print.append( self._variables[ 'popup_title' ] )
|
|
|
|
if 'popup_text_1' in self._variables: stuff_to_print.append( self._variables[ 'popup_text_1' ] )
|
|
|
|
if 'popup_text_2' in self._variables: stuff_to_print.append( self._variables[ 'popup_text_2' ] )
|
|
|
|
if 'popup_traceback' in self._variables: stuff_to_print.append( self._variables[ 'popup_traceback' ] )
|
|
|
|
|
|
stuff_to_print = [ str( s ) for s in stuff_to_print ]
|
|
|
|
try:
|
|
|
|
return os.linesep.join( stuff_to_print )
|
|
|
|
except:
|
|
|
|
return repr( stuff_to_print )
|
|
|
|
|
|
|
|
def WaitIfNeeded( self ):
|
|
|
|
if HydrusData.TimeHasPassed( self._next_yield_pause ):
|
|
|
|
time.sleep( 0.1 )
|
|
|
|
self._next_yield_pause = HydrusData.GetNow() + self._yield_pause_period
|
|
|
|
if HydrusData.TimeHasPassed( self._next_bigger_pause ):
|
|
|
|
time.sleep( 1 )
|
|
|
|
self._next_bigger_pause = HydrusData.GetNow() + self._bigger_pause_period
|
|
|
|
if HydrusData.TimeHasPassed( self._longer_pause_period ):
|
|
|
|
time.sleep( 10 )
|
|
|
|
self._next_longer_pause = HydrusData.GetNow() + self._longer_pause_period
|
|
|
|
|
|
|
|
|
|
i_paused = False
|
|
should_quit = False
|
|
|
|
while self.IsPaused():
|
|
|
|
i_paused = True
|
|
|
|
time.sleep( 0.1 )
|
|
|
|
if self.IsDone():
|
|
|
|
break
|
|
|
|
|
|
|
|
if self.IsCancelled():
|
|
|
|
should_quit = True
|
|
|
|
|
|
return ( i_paused, should_quit )
|
|
|
|
|
|
class FileRWLock( object ):
|
|
|
|
class RLock( object ):
|
|
|
|
def __init__( self, parent ):
|
|
|
|
self.parent = parent
|
|
|
|
|
|
def __enter__( self ):
|
|
|
|
while not HydrusThreading.IsThreadShuttingDown():
|
|
|
|
with self.parent.lock:
|
|
|
|
# if there are no writers, we can start reading
|
|
|
|
if self.parent.num_waiting_writers == 0:
|
|
|
|
self.parent.num_readers += 1
|
|
|
|
return
|
|
|
|
|
|
|
|
# otherwise wait a bit
|
|
|
|
self.parent.read_available_event.wait( 1 )
|
|
|
|
self.parent.read_available_event.clear()
|
|
|
|
|
|
|
|
def __exit__( self, exc_type, exc_val, exc_tb ):
|
|
|
|
with self.parent.lock:
|
|
|
|
self.parent.num_readers -= 1
|
|
|
|
do_notify = self.parent.num_readers == 0
|
|
|
|
|
|
if do_notify:
|
|
|
|
self.parent.write_available_event.set()
|
|
|
|
|
|
|
|
|
|
class WLock( object ):
|
|
|
|
def __init__( self, parent ):
|
|
|
|
self.parent = parent
|
|
|
|
|
|
def __enter__( self ):
|
|
|
|
# let all the readers know that we are bumping up to the front of the queue
|
|
|
|
with self.parent.lock:
|
|
|
|
self.parent.num_waiting_writers += 1
|
|
|
|
|
|
while not HydrusThreading.IsThreadShuttingDown():
|
|
|
|
with self.parent.lock:
|
|
|
|
# if nothing reading or writing atm, sieze the opportunity
|
|
|
|
if self.parent.num_readers == 0 and not self.parent.there_is_an_active_writer:
|
|
|
|
self.parent.there_is_an_active_writer = True
|
|
|
|
return
|
|
|
|
|
|
|
|
# otherwise wait a bit
|
|
|
|
self.parent.write_available_event.wait( 1 )
|
|
|
|
self.parent.write_available_event.clear()
|
|
|
|
|
|
|
|
def __exit__( self, exc_type, exc_val, exc_tb ):
|
|
|
|
with self.parent.lock:
|
|
|
|
self.parent.there_is_an_active_writer = False
|
|
|
|
self.parent.num_waiting_writers -= 1
|
|
|
|
do_read_notify = self.parent.num_waiting_writers == 0 # reading is now available
|
|
do_write_notify = self.parent.num_waiting_writers > 0 # another writer is waiting
|
|
|
|
|
|
if do_read_notify:
|
|
|
|
self.parent.read_available_event.set()
|
|
|
|
|
|
if do_write_notify:
|
|
|
|
self.parent.write_available_event.set()
|
|
|
|
|
|
|
|
|
|
def __init__( self ):
|
|
|
|
self.read = self.RLock( self )
|
|
self.write = self.WLock( self )
|
|
|
|
self.lock = threading.Lock()
|
|
|
|
self.read_available_event = threading.Event()
|
|
self.write_available_event = threading.Event()
|
|
|
|
self.num_readers = 0
|
|
self.num_waiting_writers = 0
|
|
self.there_is_an_active_writer = False
|
|
|
|
|
|
class QtAwareJob(HydrusThreading.SchedulableJob):
|
|
|
|
def __init__( self, controller, scheduler, window, initial_delay, work_callable ):
|
|
|
|
HydrusThreading.SchedulableJob.__init__( self, controller, scheduler, initial_delay, work_callable )
|
|
|
|
self._window = window
|
|
|
|
|
|
def _BootWorker( self ):
|
|
|
|
def qt_code():
|
|
|
|
if not self._window or not QP.isValid( self._window ):
|
|
|
|
return
|
|
|
|
|
|
self.Work()
|
|
|
|
|
|
QP.CallAfter( qt_code )
|
|
|
|
|
|
def _MyWindowDead( self ):
|
|
|
|
return not self._window
|
|
|
|
|
|
def IsCancelled( self ):
|
|
|
|
my_window_dead = self._MyWindowDead()
|
|
|
|
if my_window_dead:
|
|
|
|
self._is_cancelled.set()
|
|
|
|
|
|
return HydrusThreading.SchedulableJob.IsCancelled( self )
|
|
|
|
|
|
def IsDead( self ):
|
|
|
|
return self._MyWindowDead()
|
|
|
|
|
|
class QtAwareRepeatingJob(HydrusThreading.RepeatingJob):
|
|
|
|
def __init__( self, controller, scheduler, window, initial_delay, period, work_callable ):
|
|
|
|
HydrusThreading.RepeatingJob.__init__( self, controller, scheduler, initial_delay, period, work_callable )
|
|
|
|
self._window = window
|
|
|
|
|
|
def _QTWork( self ):
|
|
|
|
if not self._window or not QP.isValid( self._window ):
|
|
|
|
return
|
|
|
|
|
|
self.Work()
|
|
|
|
|
|
def _BootWorker( self ):
|
|
|
|
QP.CallAfter( self._QTWork )
|
|
|
|
|
|
def _MyWindowDead( self ):
|
|
|
|
return not self._window
|
|
|
|
|
|
def IsCancelled( self ):
|
|
|
|
my_window_dead = self._MyWindowDead()
|
|
|
|
if my_window_dead:
|
|
|
|
self._is_cancelled.set()
|
|
|
|
|
|
return HydrusThreading.SchedulableJob.IsCancelled( self )
|
|
|
|
|
|
def IsDead( self ):
|
|
|
|
return self._MyWindowDead()
|
|
|
|
|