def __init__(self, name, firstCheckDelay = None):
Job.__init__(self, name)
self._serialNum = serialNum()
self._findContainersJob = None
self._checkContainersJob = None
self._pruneContainersJob = None
if firstCheckDelay is None:
firstCheckDelay = 60. * 15.
# divide by two, since the first check just takes length measurements and
# doesn't check for leaks
self._nextCheckDelay = firstCheckDelay/2.
self._checkDelayScale = config.GetFloat('leak-detector-check-delay-scale', 1.5)
self._pruneTaskPeriod = config.GetFloat('leak-detector-prune-period', 60. * 30.)
# main dict of id(container)->containerRef
self._id2ref = {}
# storage for results of check-container job
self._index2containerId2len = {}
self._index2delay = {}
if config.GetBool('leak-container', 0):
_createContainerLeak()
if config.GetBool('leak-tasks', 0):
_createTaskLeak()
# don't check our own tables for leaks
ContainerLeakDetector.addPrivateObj(ContainerLeakDetector.PrivateIds)
ContainerLeakDetector.addPrivateObj(self.__dict__)
self.setPriority(Job.Priorities.Min)
jobMgr.add(self)
def leakTask(task=None, leakTaskName=leakTaskName):
base = getBase()
taskMgr.add(nullTask, uniqueName(leakTaskName))
taskMgr.doMethodLater(1 << 31, nullDoLater, uniqueName(leakDoLaterName))
taskMgr.doMethodLater(10, leakTask, 'doLeakTask-%s' % serialNum())
if task:
return task.done
def leakContainer(task=None):
base = getBase()
if not hasattr(base, 'leakContainer'):
base.leakContainer = {}
# use tuples as keys since they can't be weakref'd, and use an instance
# since it can't be repr/eval'd
# that will force the leak detector to hold a normal 'non-weak' reference
class LeakKey:
pass
base.leakContainer[(LeakKey(),)] = {}
# test the non-weakref object reference handling
if random.random() < .01:
key = random.choice(base.leakContainer.keys())
ContainerLeakDetector.notify.debug(
'removing reference to leakContainer key %s so it will be garbage-collected' % safeRepr(key))
del base.leakContainer[key]
taskMgr.doMethodLater(10, leakContainer, 'leakContainer-%s' % serialNum())
if task:
return task.done
