Async.py

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#
# Copyright 2009, MeVis Medical Solutions AG
#
# The user may use this file in accordance with the license agreement provided with
# the Software or, alternatively, in accordance with the terms contained in a
# written agreement between the user and MeVis Medical Solutions AG.
#
# For further information use the contact form at https://www.mevislab.de/contact
#
 
 
 
# -- system imports ----------------------------------------------------------------------------{{{-
# ----------------------------------------------------------------------------------------------}}}-
 
# -- local imports -----------------------------------------------------------------------------{{{-
import mevis
from . import Base, Logging
 
# ----------------------------------------------------------------------------------------------}}}-
 
# -- global variables --------------------------------------------------------------------------{{{-
 
gFinished = None
# ----------------------------------------------------------------------------------------------}}}-
 
 
# -- def waitForModules ------------------------------------------------------------------------{{{-
 
def waitForModules(moduleList):
    for module in moduleList:
        waitForModule(module)
 
 
# ----------------------------------------------------------------------------------------------}}}-
 
 
# -- def waitForModule -------------------------------------------------------------------------{{{-
 
def waitForModule(module):
    global gFinished
    context = Base.getTestCaseContext()
 
    fldRunning = context.field("%s.taskRunning" % (module))
    fldFinished = context.field("%s.taskFinished" % (module))
 
    if not (fldRunning and fldFinished):
        Logging.warning("Module %s has either no field taskFinished or no field taskRunning." % (module))
        return
 
    # Task not running.
    if not fldRunning.value:
        return
 
    Logging.info("Waiting for module %s to finish processing its background task." % (module))
 
    gFinished = False
    fldListener = context.addFieldListener(fldFinished, "Async.setFinished", False)
    while not gFinished:
        mevis.MLAB.processEvents()
    context.removeFieldListener(fldListener)
 
 
# ----------------------------------------------------------------------------------------------}}}-
 
 
# -- def setFinished # -------------------------------------------------------------------------{{{-
 
def setFinished():
    global gFinished
    gFinished = True
 
 
# ----------------------------------------------------------------------------------------------}}}-