Beispiel #1
0
class JoinableQueue(Queue):
    def __init__(self, maxsize=0):
        Queue.__init__(self, maxsize)
        self._unfinished_tasks = Semaphore(0)
        self._cond = Condition()

    def __getstate__(self):
        return Queue.__getstate__(self) + (self._cond, self._unfinished_tasks)

    def __setstate__(self, state):
        Queue.__setstate__(self, state[:-2])
        self._cond, self._unfinished_tasks = state[-2:]

    def put(self, item, block=True, timeout=None):
        Queue.put(self, item, block, timeout)
        self._unfinished_tasks.release()

    def task_done(self):
        self._cond.acquire()
        try:
            if not self._unfinished_tasks.acquire(False):
                raise ValueError('task_done() called too many times')
            if self._unfinished_tasks._semlock._is_zero():
                self._cond.notify_all()
        finally:
            self._cond.release()

    def join(self):
        self._cond.acquire()
        try:
            if not self._unfinished_tasks._semlock._is_zero():
                self._cond.wait()
        finally:
            self._cond.release()
Beispiel #2
0
class JoinableQueue(Queue):

    def __init__(self, maxsize=0):
        Queue.__init__(self, maxsize)
        self._unfinished_tasks = Semaphore(0)
        self._cond = Condition()

    def __getstate__(self):
        return Queue.__getstate__(self) + (self._cond, self._unfinished_tasks)

    def __setstate__(self, state):
        Queue.__setstate__(self, state[:-2])
        self._cond, self._unfinished_tasks = state[-2:]

    def put(self, item, block=True, timeout=None):
        Queue.put(self, item, block, timeout)
        self._unfinished_tasks.release()

    def task_done(self):
        self._cond.acquire()
        try:
            if not self._unfinished_tasks.acquire(False):
                raise ValueError('task_done() called too many times')
            if self._unfinished_tasks._semlock._is_zero():
                self._cond.notify_all()
        finally:
            self._cond.release()

    def join(self):
        self._cond.acquire()
        try:
            if not self._unfinished_tasks._semlock._is_zero():
                self._cond.wait()
        finally:
            self._cond.release()
Beispiel #3
0
class JoinableQueue(Queue):

    def __init__(self, maxsize = 0):
        Queue.__init__(self, maxsize)
        self._unfinished_tasks = Semaphore(0)
        self._cond = Condition()

    def __getstate__(self):
        return Queue.__getstate__(self) + (self._cond, self._unfinished_tasks)

    def __setstate__(self, state):
        Queue.__setstate__(self, state[:-2])
        self._cond, self._unfinished_tasks = state[-2:]

    def put(self, obj, block = True, timeout = None):
        if not not self._closed:
            raise AssertionError
            raise self._sem.acquire(block, timeout) or Full
        self._notempty.acquire()
        self._cond.acquire()
        try:
            if self._thread is None:
                self._start_thread()
            self._buffer.append(obj)
            self._unfinished_tasks.release()
            self._notempty.notify()
        finally:
            self._cond.release()
            self._notempty.release()

        return

    def task_done(self):
        self._cond.acquire()
        try:
            if not self._unfinished_tasks.acquire(False):
                raise ValueError('task_done() called too many times')
            if self._unfinished_tasks._semlock._is_zero():
                self._cond.notify_all()
        finally:
            self._cond.release()

    def join(self):
        self._cond.acquire()
        try:
            if not self._unfinished_tasks._semlock._is_zero():
                self._cond.wait()
        finally:
            self._cond.release()
Beispiel #4
0
class JoinableQueue(Queue):

    def __init__(self, maxsize = 0):
        Queue.__init__(self, maxsize)
        self._unfinished_tasks = Semaphore(0)
        self._cond = Condition()

    def __getstate__(self):
        return Queue.__getstate__(self) + (self._cond, self._unfinished_tasks)

    def __setstate__(self, state):
        Queue.__setstate__(self, state[:-2])
        self._cond, self._unfinished_tasks = state[-2:]

    def put(self, obj, block = True, timeout = None):
        if not not self._closed:
            raise AssertionError
            raise self._sem.acquire(block, timeout) or Full
        self._notempty.acquire()
        self._cond.acquire()
        try:
            if self._thread is None:
                self._start_thread()
            self._buffer.append(obj)
            self._unfinished_tasks.release()
            self._notempty.notify()
        finally:
            self._cond.release()
            self._notempty.release()

        return

    def task_done(self):
        self._cond.acquire()
        try:
            if not self._unfinished_tasks.acquire(False):
                raise ValueError('task_done() called too many times')
            if self._unfinished_tasks._semlock._is_zero():
                self._cond.notify_all()
        finally:
            self._cond.release()

    def join(self):
        self._cond.acquire()
        try:
            if not self._unfinished_tasks._semlock._is_zero():
                self._cond.wait()
        finally:
            self._cond.release()