def access(self):
"""
Request if the give thread is allowed to access the resource.
"""
# self._debug("%s access()" % _currentThread().name)
if not self.isLock():
self._debug("There is no owner of the lock, %s can pass" %
_currentThread().name)
return True
elif self._isOwner():
self._when = _datetime.now()
self._debug("The owner is who is asking (%s), "
"renew its booking" % (_currentThread().name))
return True
else:
return False
def _isOwner(self):
isOwner = self._owner == _currentThread().name
# if isOwner:
# self._debug("%s is the owner" % (_currentThread().name))
# else:
# self._debug("%s is NOT the owner" % (_currentThread().name))
return isOwner
def access(self):
"""
Request if the give thread is allowed to access the resource.
"""
# self._debug("%s access()" % _currentThread().name)
if not self.isLock():
self._debug("There is no owner of the lock, %s can pass"
% _currentThread().name)
return True
elif self._isOwner():
self._when = _datetime.now()
self._debug("The owner is who is asking (%s), "
"renew its booking" % (_currentThread().name))
return True
else:
return False
def _isOwner(self):
isOwner = self._owner == _currentThread().name
# if isOwner:
# self._debug("%s is the owner" % (_currentThread().name))
# else:
# self._debug("%s is NOT the owner" % (_currentThread().name))
return isOwner
def _doLock(self, timeout=None):
if self._hasOwner():
raise RuntimeError("Try to lock when not yet released")
self._owner = _currentThread().name
self._when = _datetime.now()
self.expirationTime = timeout
self._info("%s has take the lock (expiration time %s)" %
(self.owner, self.expirationTime))
def _doLock(self, timeout=None):
if self._hasOwner():
raise RuntimeError("Try to lock when not yet released")
self._owner = _currentThread().name
self._when = _datetime.now()
self.expirationTime = timeout
self._info("%s has take the lock (expiration time %s)"
% (self.owner, self.expirationTime))
def __stop(self):
current = _currentThread()
target = self
if current is target:
self.should_die()
self.__running = 0
else:
self.__queue.put(PendingResult(None, None, self.__stop))
_sleep(0.001)
return
def __stop(self):
current = _currentThread()
target = self
if current is target:
self.should_die()
self.__running = 0
else:
self.__queue.put(PendingResult(None, None, self.__stop))
_sleep(0.001)
return
def request(self, timeout=None):
"""
Request to book the access. If its free (or has expired a previous
one) do it, else reject (even if the owner recalls it).
"""
# self._debug("%s request()" % _currentThread().name)
if not self._hasOwner() or self._hasExpired():
self._doLock(timeout)
return True
else:
self._warning("%s request the lock when already is" %
(_currentThread().name))
return False
def release(self):
"""
Only the owner can release the lock.
"""
# self._debug("%s release()" % _currentThread().name)
if self._isOwner():
self._debug("%s releases the lock" % self._owner)
self._doRelease()
return True
else:
self._error("%s is NOT allowed to release %s's lock"
% (_currentThread().name, self._owner))
return False
def request(self, timeout=None):
"""
Request to book the access. If its free (or has expired a previous
one) do it, else reject (even if the owner recalls it).
"""
# self._debug("%s request()" % _currentThread().name)
if not self._hasOwner() or self._hasExpired():
self._doLock(timeout)
return True
else:
self._warning("%s request the lock when already is"
% (_currentThread().name))
return False
def release(self):
"""
Only the owner can release the lock.
"""
# self._debug("%s release()" % _currentThread().name)
if self._isOwner():
self._debug("%s releases the lock" % self._owner)
self._doRelease()
return True
else:
self._error("%s is NOT allowed to release %s's lock" %
(_currentThread().name, self._owner))
return False
def handler(exc=None, passthru=True):
if exc is None:
exc = sys.exc_info()
TEXT = _format_exc(exc)
try:
_thread = _currentThread()
TEXT = ("Exception in thread %s:\n" % _thread.name) + TEXT
except: pass
CMD = len(sys.argv) > 1 and sys.argv[1].endswith('.py') and sys.argv[1] or sys.argv[0]
SUBJECT = CMD+': '+str(exc[1]).replace('\r','').replace('\n','')
HEADERS = 'From: %s\r\nTo: %s\r\nSubject: %s\r\n\r\n' % (EMAIL_FROM, EMAIL_TO, SUBJECT)
_SMTP('localhost').sendmail(EMAIL_FROM, [EMAIL_TO], HEADERS+TEXT)
if passthru:
sys.__excepthook__(*exc)
return TEXT
def printInfo(msg, level=0, lock=None, top=False, bottom=False):
if lock is None:
print("%s%s" % ("\t" * level, msg))
else:
with lock:
tab = "\t" * level
msg = "Thread %s: %s" % (_currentThread().name, msg)
if top or bottom:
if top:
msg = "%s%s\n%s%s" % (tab, "-" * len(msg), tab, msg)
elif bottom:
msg = "%s%s\n%s%s\n" % (tab, msg, tab, "-" * len(msg))
else:
msg = "%s%s" % (tab, msg)
print(msg)
def printInfo(msg, level=0, lock=None, top=False, bottom=False):
if lock is None:
print("%s%s" % ("\t"*level, msg))
else:
with lock:
tab = "\t"*level
msg = "Thread %s: %s" % (_currentThread().name, msg)
if top or bottom:
if top:
msg = "%s%s\n%s%s" % (tab, "-"*len(msg), tab, msg)
elif bottom:
msg = "%s%s\n%s%s\n" % (tab, msg, tab, "-"*len(msg))
else:
msg = "%s%s" % (tab, msg)
print(msg)
def _threadId(self):
return _currentThread().getName()
def _threadId(self):
return _currentThread().getName()
def __currentDict(self, _currentThread = _currentThread):
try:
return self.__thread_dict[_currentThread()]
except KeyError:
self.__thread_dict[_currentThread()] = result = {}
return result