class AbortEvent(object):
"""Event class with same interface as :func:`threading.Event` but it
adds a message which can be use to raise an excption with."""
def __init__(self):
self.__message = ""
self.__cond = Condition(Lock())
self.__flag = False
self.raised = False
def _reset_internal_locks(self):
# private! called by Thread._reset_internal_locks by _after_fork()
self.__cond.__init__()
def is_set(self):
return self.__flag
def message(self):
return self.__message
def set(self):
self.__cond.acquire()
try:
self.__flag = True
self.__message = ""
self.__cond.notify_all()
finally:
self.__cond.release()
def raise_exception(self, reason):
"""set the event and provide a reason"""
if self.raised:
return
self.__cond.acquire()
try:
self.raised = True
self.__flag = True
self.__message = reason
self.__cond.notify_all()
finally:
self.__cond.release()
def clear(self):
self.__cond.acquire()
try:
self.__flag = False
self.__message = ""
finally:
self.__cond.release()
def wait(self, timeout=None):
self.__cond.acquire()
try:
if not self.__flag:
self.__cond.wait(timeout)
return self.__flag
finally:
self.__cond.release()
def __init__(self, name):
Condition.__init__(self)
self.name = name
def __init__(self):
self.finished = False
self.release_count = 0
Condition.__init__(self)
def __init__(self):
self.finished = False
self.release_count = 0
Condition.__init__(self)
