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Diffstat (limited to 'vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/thread.py')
m--------- | vim/bundle/YouCompleteMe | 0 | ||||
-rwxr-xr-x | vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/thread.py | 138 |
2 files changed, 0 insertions, 138 deletions
diff --git a/vim/bundle/YouCompleteMe b/vim/bundle/YouCompleteMe new file mode 160000 +Subproject 0de1c0c9bb13ce82172b472c676035cd47cf6a6 diff --git a/vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/thread.py b/vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/thread.py deleted file mode 100755 index a45959d..0000000 --- a/vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/thread.py +++ /dev/null @@ -1,138 +0,0 @@ -# Copyright 2009 Brian Quinlan. All Rights Reserved. -# Licensed to PSF under a Contributor Agreement. - -"""Implements ThreadPoolExecutor.""" - -from __future__ import with_statement -import atexit -import threading -import weakref -import sys - -from concurrent.futures import _base - -try: - import queue -except ImportError: - import Queue as queue - -__author__ = 'Brian Quinlan (brian@sweetapp.com)' - -# Workers are created as daemon threads. This is done to allow the interpreter -# to exit when there are still idle threads in a ThreadPoolExecutor's thread -# pool (i.e. shutdown() was not called). However, allowing workers to die with -# the interpreter has two undesirable properties: -# - The workers would still be running during interpretor shutdown, -# meaning that they would fail in unpredictable ways. -# - The workers could be killed while evaluating a work item, which could -# be bad if the callable being evaluated has external side-effects e.g. -# writing to a file. -# -# To work around this problem, an exit handler is installed which tells the -# workers to exit when their work queues are empty and then waits until the -# threads finish. - -_threads_queues = weakref.WeakKeyDictionary() -_shutdown = False - -def _python_exit(): - global _shutdown - _shutdown = True - items = list(_threads_queues.items()) - for t, q in items: - q.put(None) - for t, q in items: - t.join() - -atexit.register(_python_exit) - -class _WorkItem(object): - def __init__(self, future, fn, args, kwargs): - self.future = future - self.fn = fn - self.args = args - self.kwargs = kwargs - - def run(self): - if not self.future.set_running_or_notify_cancel(): - return - - try: - result = self.fn(*self.args, **self.kwargs) - except BaseException: - e = sys.exc_info()[1] - self.future.set_exception(e) - else: - self.future.set_result(result) - -def _worker(executor_reference, work_queue): - try: - while True: - work_item = work_queue.get(block=True) - if work_item is not None: - work_item.run() - continue - executor = executor_reference() - # Exit if: - # - The interpreter is shutting down OR - # - The executor that owns the worker has been collected OR - # - The executor that owns the worker has been shutdown. - if _shutdown or executor is None or executor._shutdown: - # Notice other workers - work_queue.put(None) - return - del executor - except BaseException: - _base.LOGGER.critical('Exception in worker', exc_info=True) - -class ThreadPoolExecutor(_base.Executor): - def __init__(self, max_workers): - """Initializes a new ThreadPoolExecutor instance. - - Args: - max_workers: The maximum number of threads that can be used to - execute the given calls. - """ - self._max_workers = max_workers - self._work_queue = queue.Queue() - self._threads = set() - self._shutdown = False - self._shutdown_lock = threading.Lock() - - def submit(self, fn, *args, **kwargs): - with self._shutdown_lock: - if self._shutdown: - raise RuntimeError('cannot schedule new futures after shutdown') - - f = _base.Future() - w = _WorkItem(f, fn, args, kwargs) - - self._work_queue.put(w) - self._adjust_thread_count() - return f - submit.__doc__ = _base.Executor.submit.__doc__ - - def _adjust_thread_count(self): - # When the executor gets lost, the weakref callback will wake up - # the worker threads. - def weakref_cb(_, q=self._work_queue): - q.put(None) - # TODO(bquinlan): Should avoid creating new threads if there are more - # idle threads than items in the work queue. - if len(self._threads) < self._max_workers: - t = threading.Thread(target=_worker, - args=(weakref.ref(self, weakref_cb), - self._work_queue)) - t.daemon = True - t.start() - self._threads.add(t) - _threads_queues[t] = self._work_queue - - def shutdown(self, wait=True): - with self._shutdown_lock: - self._shutdown = True - self._work_queue.put(None) - if wait: - for t in self._threads: - t.join() - shutdown.__doc__ = _base.Executor.shutdown.__doc__ |