Generated by Cython 0.29.17
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Raw output: _abstract_linkable.c
+001: # -*- coding: utf-8 -*-
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002: # cython: auto_pickle=False,embedsignature=True,always_allow_keywords=False
003: """
004: Internal module, support for the linkable protocol for "event" like objects.
005:
006: """
007: from __future__ import absolute_import
008: from __future__ import division
009: from __future__ import print_function
010:
+011: import sys
__pyx_t_1 = __Pyx_Import(__pyx_n_s_sys, 0, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 11, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem(__pyx_d, __pyx_n_s_sys, __pyx_t_1) < 0) __PYX_ERR(0, 11, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
012:
+013: from gevent._hub_local import get_hub_noargs as get_hub
__pyx_t_1 = PyList_New(1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 13, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); __Pyx_INCREF(__pyx_n_s_get_hub_noargs); __Pyx_GIVEREF(__pyx_n_s_get_hub_noargs); PyList_SET_ITEM(__pyx_t_1, 0, __pyx_n_s_get_hub_noargs); __pyx_t_2 = __Pyx_Import(__pyx_n_s_gevent__hub_local, __pyx_t_1, 0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 13, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __pyx_t_1 = __Pyx_ImportFrom(__pyx_t_2, __pyx_n_s_get_hub_noargs); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 13, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem(__pyx_d, __pyx_n_s_get_hub_noargs, __pyx_t_1) < 0) __PYX_ERR(0, 13, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
014:
+015: from gevent.exceptions import InvalidSwitchError
__pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 15, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_INCREF(__pyx_n_s_InvalidSwitchError); __Pyx_GIVEREF(__pyx_n_s_InvalidSwitchError); PyList_SET_ITEM(__pyx_t_2, 0, __pyx_n_s_InvalidSwitchError); __pyx_t_1 = __Pyx_Import(__pyx_n_s_gevent_exceptions, __pyx_t_2, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 15, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __pyx_t_2 = __Pyx_ImportFrom(__pyx_t_1, __pyx_n_s_InvalidSwitchError); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 15, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_INCREF(__pyx_t_2); __Pyx_XGOTREF(__pyx_v_6gevent_19__abstract_linkable_InvalidSwitchError); __Pyx_DECREF_SET(__pyx_v_6gevent_19__abstract_linkable_InvalidSwitchError, __pyx_t_2); __Pyx_GIVEREF(__pyx_t_2); __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+016: from gevent.timeout import Timeout
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017:
+018: locals()['getcurrent'] = __import__('greenlet').getcurrent
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+019: locals()['greenlet_init'] = lambda: None
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020:
+021: __all__ = [
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022: 'AbstractLinkable',
023: ]
024:
+025: class AbstractLinkable(object):
struct __pyx_vtabstruct_6gevent_19__abstract_linkable_AbstractLinkable { PyObject *(*rawlink)(struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *, PyObject *, int __pyx_skip_dispatch); int (*ready)(struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *, int __pyx_skip_dispatch); PyObject *(*unlink)(struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *, PyObject *, int __pyx_skip_dispatch); PyObject *(*_check_and_notify)(struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *); PyObject *(*_notify_links)(struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *, int __pyx_skip_dispatch); PyObject *(*_wait_core)(struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *, PyObject *, struct __pyx_opt_args_6gevent_19__abstract_linkable_16AbstractLinkable__wait_core *__pyx_optional_args); PyObject *(*_wait_return_value)(struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *, PyObject *, PyObject *); PyObject *(*_wait)(struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *, struct __pyx_opt_args_6gevent_19__abstract_linkable_16AbstractLinkable__wait *__pyx_optional_args); }; static struct __pyx_vtabstruct_6gevent_19__abstract_linkable_AbstractLinkable *__pyx_vtabptr_6gevent_19__abstract_linkable_AbstractLinkable;
026: # Encapsulates the standard parts of the linking and notifying
027: # protocol common to both repeatable events (Event, Semaphore) and
028: # one-time events (AsyncResult).
029: #
030: # TODO: As of gevent 1.5, we use the same datastructures and almost
031: # the same algorithm as Greenlet. See about unifying them more.
032:
033: __slots__ = (
+034: 'hub',
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035: '_links',
036: '_notifier',
037: '_notify_all',
038: '__weakref__'
039: )
040:
+041: def __init__(self, hub=None):
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042: # Before this implementation, AsyncResult and Semaphore
043: # maintained the order of notifications, but Event did not.
044:
045: # In gevent 1.3, before Semaphore extended this class, that
046: # was changed to not maintain the order. It was done because
047: # Event guaranteed to only call callbacks once (a set) but
048: # AsyncResult had no such guarantees. When Semaphore was
049: # changed to extend this class, it lost its ordering
050: # guarantees. Unfortunately, that made it unfair. There are
051: # rare cases that this can starve a greenlet
052: # (https://github.com/gevent/gevent/issues/1487) and maybe
053: # even lead to deadlock (not tested).
054:
055: # So in gevent 1.5 we go back to maintaining order. But it's
056: # still important not to make duplicate calls, and it's also
057: # important to avoid O(n^2) behaviour that can result from
058: # naive use of a simple list due to the need to handle removed
059: # links in the _notify_links loop. Cython has special support for
060: # built-in sets, lists, and dicts, but not ordereddict. Rather than
061: # use two data structures, or a dict({link: order}), we simply use a
062: # list and remove objects as we go, keeping track of them so as not to
063: # have duplicates called. This makes `unlink` O(n), but we can avoid
064: # calling it in the common case in _wait_core (even so, the number of
065: # waiters should usually be pretty small)
+066: self._links = []
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068: # This is conceptually a class attribute, defined here for ease of access in
069: # cython. If it's true, when notifiers fire, all existing callbacks are called.
070: # If its false, we only call callbacks as long as ready() returns true.
+071: self._notify_all = True
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072: # we don't want to do get_hub() here to allow defining module-level objects
073: # without initializing the hub
+074: self.hub = hub
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075:
+076: def linkcount(self):
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077: # For testing: how many objects are linked to this one?
+078: return len(self._links)
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079:
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143:
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146: # XXX: JAM: What was I thinking? This doesn't make much sense,
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164:
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173: # switching and linking. If *catch* is set to (),
174: # a timeout that elapses will be allowed to be raised.
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+188: self.unlink(switch)
__pyx_t_5 = ((struct __pyx_vtabstruct_6gevent_19__abstract_linkable_AbstractLinkable *)__pyx_v_self->__pyx_vtab)->unlink(__pyx_v_self, __pyx_v_switch, 0); if (unlikely(!__pyx_t_5)) __PYX_ERR(0, 188, __pyx_L26_error) __Pyx_GOTREF(__pyx_t_5); __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
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191: # test_set_and_clear and test_timeout in test_threading
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197:
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static PyObject *__pyx_f_6gevent_19__abstract_linkable_16AbstractLinkable__wait_return_value(CYTHON_UNUSED struct __pyx_obj_6gevent_19__abstract_linkable_AbstractLinkable *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_waited, CYTHON_UNUSED PyObject *__pyx_v_wait_success) { PyObject *__pyx_r = NULL; __Pyx_RefNannyDeclarations __Pyx_RefNannySetupContext("_wait_return_value", 0); /* … */ /* function exit code */ __pyx_L0:; __Pyx_XGIVEREF(__pyx_r); __Pyx_RefNannyFinishContext(); return __pyx_r; }
199: # pylint:disable=unused-argument
200: # Subclasses should override this to return a value from _wait.
201: # By default we return None.
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203:
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207:
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210:
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213:
+214: _init()
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215:
216:
+217: from gevent._util import import_c_accel
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+218: import_c_accel(globals(), 'gevent.__abstract_linkable')
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