def start(self, _strXmlInput):
"""
Launch EDNA with the given XML stream
@param _strXmlInput: XML to be passed to the plugin
@type _strXmlInput: python string representing the XML data structure
"""
if (_strXmlInput is None) or (_strXmlInput == "") :
return
#This is a trick to work-around bug #463:
# Run the fist thread alone (delay the second, third, ...)
# semaphore._Semaphore__value is the current value of the value, unfortunatly it is a protected value without getter
# I need the value of the semaphore to guess if the current call is the first or not.
# Nota semaphore are decreased in value from self.__iNbThreads to 0. When Zero, the semaphore is blocking.
# Them all other, limited by the semaphore.
if self.__bIsFirstExecute:
sys.stdout.write("Waiting for first thread to initialize ....")
while EDUtilsParallel.getNbRunning() > 0:
time.sleep(0.5)
sys.stdout.write(".")
EDUtilsParallel.semaphoreNbThreadsAcquire()
edPlugin = EDParallelExecute.__edFactoryPlugin.loadPlugin(self.__strPluginName)
if (edPlugin is not None):
edPlugin.setDataInput(_strXmlInput)
edPlugin.connectSUCCESS(self.successPluginExecution)
edPlugin.connectFAILURE(self.failurePluginExecution)
edPlugin.execute()
#edPlugin.executeSynchronous()
else:
EDUtilsParallel.semaphoreNbThreadsRelease()
self.__bIsFirstExecute = False
EDVerbose.screen("ERROR! Plugin not found : " + self.__strPluginName)
def preProcess(self, _edObject=None):
"""
preProcess of the plugin:
Ensure a CPU resource is available for the processing by acquiring a semaphore
"""
EDVerbose.DEBUG("Acquire semaphore nbCPU by plugin %s, currently value: %s" % (self.getPluginName(), EDUtilsParallel.getSemaphoreValue()))
EDUtilsParallel.semaphoreNbThreadsAcquire()
EDPlugin.preProcess(self, _edObject)
def preProcess(self, _edObject=None):
"""
preProcess of the plugin:
Ensure a CPU resource is available for the processing by acquiring a semaphore
"""
self.DEBUG("Acquire semaphore nbCPU by plugin %s" % self.getPluginName())
EDUtilsParallel.semaphoreNbThreadsAcquire()
EDPlugin.preProcess(self, _edObject)
def preProcess(self, _edObject=None):
"""
preProcess of the plugin:
Ensure a CPU resource is available for the processing by acquiring a semaphore
"""
EDVerbose.DEBUG(
"Acquire semaphore nbCPU by plugin %s, currently value: %s" %
(self.getPluginName(), EDUtilsParallel.getSemaphoreValue()))
EDUtilsParallel.semaphoreNbThreadsAcquire()
EDPlugin.preProcess(self, _edObject)
def semaphoreNbThreadsAcquire(self):
"""Method to acquire the semaphore that controls the number of threads running concurrently"""
EDUtilsParallel.semaphoreNbThreadsAcquire()
def semaphoreNbThreadsAcquire(self):
"""Method to acquire the semaphore that controls the number of threads running concurrently"""
EDUtilsParallel.semaphoreNbThreadsAcquire()
