本文整理汇总了Python中multiprocessing.util.register_after_fork方法的典型用法代码示例。如果您正苦于以下问题：Python util.register_after_fork方法的具体用法？Python util.register_after_fork怎么用？Python util.register_after_fork使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类multiprocessing.util的用法示例。
在下文中一共展示了util.register_after_fork方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: __init__
# 需要导入模块: from multiprocessing import util [as 别名]
# 或者: from multiprocessing.util import register_after_fork [as 别名]
def __init__(self):
util.register_after_fork(self, lambda obj: obj.clear()) 示例2: __init__
# 需要导入模块: from multiprocessing import util [as 别名]
# 或者: from multiprocessing.util import register_after_fork [as 别名]
def __init__(self, maxsize=0, reducers=None, ctx=None):
if sys.version_info[:2] >= (3, 4):
super().__init__(maxsize=maxsize, ctx=ctx)
else:
if maxsize <= 0:
# Can raise ImportError (see issues #3770 and #23400)
maxsize = SEM_VALUE_MAX
if ctx is None:
ctx = get_context()
self._maxsize = maxsize
self._reader, self._writer = connection.Pipe(duplex=False)
self._rlock = ctx.Lock()
self._opid = os.getpid()
if sys.platform == 'win32':
self._wlock = None
else:
self._wlock = ctx.Lock()
self._sem = ctx.BoundedSemaphore(maxsize)
# For use by concurrent.futures
self._ignore_epipe = False
self._after_fork()
if sys.platform != 'win32':
util.register_after_fork(self, Queue._after_fork)
self._reducers = reducers
# Use custom queue set/get state to be able to reduce the custom reducers 示例3: __init__
# 需要导入模块: from multiprocessing import util [as 别名]
# 或者: from multiprocessing.util import register_after_fork [as 别名]
def __init__(self, kind, value, maxvalue):
# unlink_now is only used on win32 or when we are using fork.
unlink_now = False
for i in range(100):
try:
self._semlock = _SemLock(
kind, value, maxvalue, SemLock._make_name(),
unlink_now)
except FileExistsError: # pragma: no cover
pass
else:
break
else: # pragma: no cover
raise FileExistsError('cannot find name for semaphore')
util.debug('created semlock with handle %s and name "%s"'
% (self._semlock.handle, self._semlock.name))
self._make_methods()
def _after_fork(obj):
obj._semlock._after_fork()
util.register_after_fork(self, _after_fork)
# When the object is garbage collected or the
# process shuts down we unlink the semaphore name
resource_tracker.register(self._semlock.name, "semlock")
util.Finalize(self, SemLock._cleanup, (self._semlock.name,),
exitpriority=0)