245 lines
6.0 KiB
Python
245 lines
6.0 KiB
Python
import HydrusExceptions
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import Queue
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import random
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import threading
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import time
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import traceback
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import wx
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import HydrusData
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import HydrusGlobals
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class DAEMON( threading.Thread ):
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def __init__( self, name, period = 1200 ):
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threading.Thread.__init__( self, name = name )
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self._name = name
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self._event = threading.Event()
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HydrusGlobals.pubsub.sub( self, 'shutdown', 'shutdown' )
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def shutdown( self ): self._event.set()
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class DAEMONQueue( DAEMON ):
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def __init__( self, name, callable, queue_topic, period = 10 ):
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DAEMON.__init__( self, name )
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self._callable = callable
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self._queue = Queue.Queue()
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self._queue_topic = queue_topic
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self._period = period
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HydrusGlobals.pubsub.sub( self, 'put', queue_topic )
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self.start()
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def put( self, data ): self._queue.put( data )
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def run( self ):
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time.sleep( 3 )
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while True:
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while self._queue.empty():
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if HydrusGlobals.shutdown: return
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self._event.wait( self._period )
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self._event.clear()
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while wx.GetApp().JustWokeFromSleep():
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if HydrusGlobals.shutdown: return
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time.sleep( 10 )
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items = []
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while not self._queue.empty(): items.append( self._queue.get() )
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try:
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self._callable( items )
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except HydrusExceptions.ShutdownException:
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return
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except Exception as e:
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HydrusData.ShowException( e )
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class DAEMONWorker( DAEMON ):
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def __init__( self, name, callable, topics = None, period = 1200, init_wait = 3, pre_callable_wait = 3 ):
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if topics is None: topics = []
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DAEMON.__init__( self, name )
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self._callable = callable
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self._topics = topics
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self._period = period
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self._init_wait = init_wait
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self._pre_callable_wait = pre_callable_wait
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for topic in topics: HydrusGlobals.pubsub.sub( self, 'set', topic )
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self.start()
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def run( self ):
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self._event.wait( self._init_wait )
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while True:
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if HydrusGlobals.shutdown: return
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time.sleep( self._pre_callable_wait )
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if HydrusGlobals.shutdown: return
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while wx.GetApp().JustWokeFromSleep():
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if HydrusGlobals.shutdown: return
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time.sleep( 10 )
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try:
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self._callable()
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except HydrusExceptions.ShutdownException:
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return
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except Exception as e:
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HydrusData.ShowText( 'Daemon ' + self._name + ' encountered an exception:' )
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HydrusData.ShowException( e )
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if HydrusGlobals.shutdown: return
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self._event.wait( self._period )
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self._event.clear()
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def set( self, *args, **kwargs ): self._event.set()
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class DAEMONCallToThread( DAEMON ):
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def __init__( self ):
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DAEMON.__init__( self, 'CallToThread' )
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self._queue = Queue.Queue()
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self.start()
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def put( self, callable, *args, **kwargs ):
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self._queue.put( ( callable, args, kwargs ) )
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self._event.set()
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def run( self ):
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while True:
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while self._queue.empty():
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if HydrusGlobals.shutdown: return
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self._event.wait( 1200 )
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self._event.clear()
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try:
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( callable, args, kwargs ) = self._queue.get()
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callable( *args, **kwargs )
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del callable
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except HydrusExceptions.ShutdownException:
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return
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except Exception as e:
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HydrusData.ShowException( e )
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time.sleep( 0.00001 )
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call_to_threads = [ DAEMONCallToThread() for i in range( 10 ) ]
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def CallToThread( callable, *args, **kwargs ):
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call_to_thread = random.choice( call_to_threads )
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while call_to_thread == threading.current_thread: call_to_thread = random.choice( call_to_threads )
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call_to_thread.put( callable, *args, **kwargs )
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def CallBlockingToWx( callable, *args, **kwargs ):
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def wx_code( job_key ):
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try:
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result = callable( *args, **kwargs )
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job_key.SetVariable( 'result', result )
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except Exception as e:
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print( 'CallBlockingToWx just caught this error:' )
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print( traceback.format_exc() )
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job_key.SetVariable( 'error', e )
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finally: job_key.Finish()
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job_key = HydrusData.JobKey()
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job_key.Begin()
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wx.CallAfter( wx_code, job_key )
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while not job_key.IsDone():
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if HydrusGlobals.shutdown: return
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time.sleep( 0.05 )
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if job_key.HasVariable( 'result' ): return job_key.GetVariable( 'result' )
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else: raise job_key.GetVariable( 'error' )
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