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move to process based structure (no GIL), ability to terminate, add dispatcher

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chrys 2017-04-24 00:32:55 +02:00
parent 66a3667141
commit 4434e781fc
1 changed files with 54 additions and 31 deletions
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83
src/fenrir/core/eventManager.py
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@ -5,12 +5,13 @@
# By Chrys, Storm Dragon, and contributers.
#from core import debug
from threading import Thread
from queue import Queue, Empty
#from threading import Thread
#from queue import Queue, Empty
import time
from enum import Enum
from _thread import allocate_lock
#from multiprocessing import Process, Queue
#from _thread import allocate_lock
from multiprocessing import Process, Queue, Lock
from multiprocessing.sharedctypes import Value
class fenrirEventType(Enum):
Ignore = 0
@ -26,7 +27,7 @@ class fenrirEventType(Enum):
def __str__(self):
return self.name
'''
class eventQueue(Queue):
def clear(self):
try:
@ -34,55 +35,77 @@ class eventQueue(Queue):
self.get_nowait()
except Empty:
pass
'''
class eventManager():
def __init__(self):
self._mainLoopRunning = True
self._eventThreads = []
self._eventQueue = eventQueue()
self.lock = allocate_lock()
self._mainLoopRunning = Value('i', 1)
self._eventProcesses = []
self._eventQueue = Queue()
self.lock = Lock()
def initialize(self, environment):
self.env = environment
def shutdown(self):
self._eventQueue.clear()
for proc in self._eventProcesses:
try:
proc.terminate()
except Exception as e:
print(e)
#self._eventQueue.clear()
def proceedEventLoop(self):
event = self._eventQueue.get()
self.eventDispatcher(event)
print(event)
return(event != fenrirEventType.StopMainLoop)
return(event['Type'] != fenrirEventType.StopMainLoop)
def eventDispatcher(self, event):
if not event:
return
if event['Type'] == fenrirEventType.Ignore:
pass
elif event['Type'] == fenrirEventType.StopMainLoop:
self._mainLoopRunning.value = 0
elif event['Type'] == fenrirEventType.ScreenUpdate:
pass
elif event['Type'] == fenrirEventType.KeyboardInput:
pass
elif event['Type'] == fenrirEventType.BrailleInput:
pass
elif event['Type'] == fenrirEventType.PlugInputDevice:
pass
elif event['Type'] == fenrirEventType.BrailleFlush:
pass
elif event['Type'] == fenrirEventType.ScreenChanged:
pass
def startMainEventLoop(self):
while(True):
self.proceedEventLoop()
self.lock.acquire(True)
if not self._mainLoopRunning:
if not self.proceedEventLoop():
self._mainLoopRunning.value = 0
break
self.lock.release()
def stopMainEventLoop(self):
self.lock.acquire(True)
self._mainLoopRunning = False
self.lock.release()
self._eventQueue.put({"EVENT":fenrirEventType.StopMainLoop,"DATA":None})
def stopMainEventLoop(self, Force = False):
if Force:
self._mainLoopRunning.value = 0
time.sleep(0.5)
self._eventQueue.put({"Type":fenrirEventType.StopMainLoop,"Data":None})
def addEventThread(self, event, function):
t = Thread(target=self.eventWorkerThread, args=(event, function))
self._eventThreads.append(t)
t = Process(target=self.eventWorkerThread, args=(event, function, self._eventQueue, self.lock))
self._eventProcesses.append(t)
t.start()
def eventWorkerThread(self, event, function):
# for i in range(20):
def eventWorkerThread(self, event, function, eventQueue, lock):
while True:
Data = None
try:
Data = function()
print(Data)
except Exception as e:
print(e)
self._eventQueue.put({"EVENT":event,"DATA":Data})
self.lock.acquire(True)
if not self._mainLoopRunning:
eventQueue.put({"Type":event,"Data":Data})
if self._mainLoopRunning.value == 0:
break
self.lock.release()
def p():
time.sleep(0.5)
#return("p")
return("p")
e = eventManager()