Generated by Cython 3.0a6
Yellow lines hint at Python interaction.
Click on a line that starts with a "+
" to see the C code that Cython generated for it.
Raw output: _abstract_linkable.c
+001: # -*- coding: utf-8 -*-
__pyx_t_1 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 1, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem(__pyx_d, __pyx_n_s_test, __pyx_t_1) < 0) __PYX_ERR(0, 1, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
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_ImportDottedModule(__pyx_n_s_sys, NULL); 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 greenlet import error as greenlet_error
__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_error); __Pyx_GIVEREF(__pyx_n_s_error); PyList_SET_ITEM(__pyx_t_1, 0, __pyx_n_s_error); __pyx_t_2 = __Pyx_Import(__pyx_n_s_greenlet, __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_error); 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_greenlet_error, __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._compat import thread_mod_name
__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_thread_mod_name); __Pyx_GIVEREF(__pyx_n_s_thread_mod_name); PyList_SET_ITEM(__pyx_t_2, 0, __pyx_n_s_thread_mod_name); __pyx_t_1 = __Pyx_Import(__pyx_n_s_gevent__compat, __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_thread_mod_name); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 15, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); if (PyDict_SetItem(__pyx_d, __pyx_n_s_thread_mod_name, __pyx_t_2) < 0) __PYX_ERR(0, 15, __pyx_L1_error) __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+016: 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, 16, __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, 16, __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, 16, __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, 16, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+017: from gevent._hub_local import get_hub_if_exists
__pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 17, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_INCREF(__pyx_n_s_get_hub_if_exists); __Pyx_GIVEREF(__pyx_n_s_get_hub_if_exists); PyList_SET_ITEM(__pyx_t_2, 0, __pyx_n_s_get_hub_if_exists); __pyx_t_1 = __Pyx_Import(__pyx_n_s_gevent__hub_local, __pyx_t_2, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 17, __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_get_hub_if_exists); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 17, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); if (PyDict_SetItem(__pyx_d, __pyx_n_s_get_hub_if_exists, __pyx_t_2) < 0) __PYX_ERR(0, 17, __pyx_L1_error) __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
018:
+019: from gevent.exceptions import InvalidSwitchError
__pyx_t_1 = PyList_New(1); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 19, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); __Pyx_INCREF(__pyx_n_s_InvalidSwitchError); __Pyx_GIVEREF(__pyx_n_s_InvalidSwitchError); PyList_SET_ITEM(__pyx_t_1, 0, __pyx_n_s_InvalidSwitchError); __pyx_t_2 = __Pyx_Import(__pyx_n_s_gevent_exceptions, __pyx_t_1, 0); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 19, __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_InvalidSwitchError); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 19, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); __Pyx_INCREF(__pyx_t_1); __Pyx_XGOTREF(__pyx_v_6gevent_27_gevent_c_abstract_linkable_InvalidSwitchError); __Pyx_DECREF_SET(__pyx_v_6gevent_27_gevent_c_abstract_linkable_InvalidSwitchError, __pyx_t_1); __Pyx_GIVEREF(__pyx_t_1); __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+020: from gevent.exceptions import InvalidThreadUseError
__pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 20, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_INCREF(__pyx_n_s_InvalidThreadUseError); __Pyx_GIVEREF(__pyx_n_s_InvalidThreadUseError); PyList_SET_ITEM(__pyx_t_2, 0, __pyx_n_s_InvalidThreadUseError); __pyx_t_1 = __Pyx_Import(__pyx_n_s_gevent_exceptions, __pyx_t_2, 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 20, __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_InvalidThreadUseError); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 20, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_2); __Pyx_INCREF(__pyx_t_2); __Pyx_XGOTREF(__pyx_v_6gevent_27_gevent_c_abstract_linkable_InvalidThreadUseError); __Pyx_DECREF_SET(__pyx_v_6gevent_27_gevent_c_abstract_linkable_InvalidThreadUseError, __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;
+021: from gevent.timeout import Timeout
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022:
+023: locals()['getcurrent'] = __import__('greenlet').getcurrent
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+024: locals()['greenlet_init'] = lambda: None
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025:
+026: __all__ = [
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027: 'AbstractLinkable',
028: ]
029:
030: # Need the real get_ident. We're imported early enough during monkey-patching
031: # that we can be sure nothing is monkey patched yet.
+032: _get_thread_ident = __import__(thread_mod_name).get_ident
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+033: _allocate_thread_lock = __import__(thread_mod_name).allocate_lock
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034:
035: class _FakeNotifier(object):
036: __slots__ = (
+037: 'pending',
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038: )
039:
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+041: self.pending = False
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042:
+043: class AbstractLinkable(object):
struct __pyx_vtabstruct_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable { PyObject *(*linkcount)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, int __pyx_skip_dispatch); PyObject *(*rawlink)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, PyObject *, int __pyx_skip_dispatch); int (*ready)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, int __pyx_skip_dispatch); PyObject *(*unlink)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, PyObject *, int __pyx_skip_dispatch); PyObject *(*_check_and_notify)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *); struct __pyx_obj_6gevent_29_gevent_c_greenlet_primitives_SwitchOutGreenletWithLoop *(*_capture_hub)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, int); PyObject *(*_AbstractLinkable__wait_to_be_notified)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, int); void (*_quiet_unlink_all)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, PyObject *); int (*_switch_to_hub)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, PyObject *); PyObject *(*_notify_link_list)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, PyObject *); PyObject *(*_notify_links)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, PyObject *, int __pyx_skip_dispatch); PyObject *(*_drop_lock_for_switch_out)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, int __pyx_skip_dispatch); PyObject *(*_acquire_lock_for_switch_in)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, int __pyx_skip_dispatch); PyObject *(*_wait_core)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, PyObject *, struct __pyx_opt_args_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable__wait_core *__pyx_optional_args); PyObject *(*_wait_return_value)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, int, int); PyObject *(*_wait)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *, struct __pyx_opt_args_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable__wait *__pyx_optional_args); PyObject *(*_allocate_lock)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *); PyGreenlet *(*_getcurrent)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *); PyObject *(*_get_thread_ident)(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *); }; static struct __pyx_vtabstruct_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *__pyx_vtabptr_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable;
044: # Encapsulates the standard parts of the linking and notifying
045: # protocol common to both repeatable events (Event, Semaphore) and
046: # one-time events (AsyncResult).
047: #
048: # With a few careful exceptions, instances of this object can only
049: # be used from a single thread. The exception is that certain methods
050: # may be used from multiple threads IFF:
051: #
052: # 1. They are documented as safe for that purpose; AND
053: # 2a. This object is compiled with Cython and thus is holding the GIL
054: # for the entire duration of the method; OR
055: # 2b. A subclass ensures that a Python-level native thread lock is held
056: # for the duration of the method; this is necessary in pure-Python mode.
057: # The only known implementation of such
058: # a subclass is for Semaphore. AND
059: # 3. The subclass that calls ``capture_hub`` catches
060: # and handles ``InvalidThreadUseError``
061: #
062: # TODO: As of gevent 1.5, we use the same datastructures and almost
063: # the same algorithm as Greenlet. See about unifying them more.
064:
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067: '_links',
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069: '_notify_all',
070: '__weakref__'
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074: # Before this implementation, AsyncResult and Semaphore
075: # maintained the order of notifications, but Event did not.
076:
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078: # was changed to not maintain the order. It was done because
079: # Event guaranteed to only call callbacks once (a set) but
080: # AsyncResult had no such guarantees. When Semaphore was
081: # changed to extend this class, it lost its ordering
082: # guarantees. Unfortunately, that made it unfair. There are
083: # rare cases that this can starve a greenlet
084: # (https://github.com/gevent/gevent/issues/1487) and maybe
085: # even lead to deadlock (not tested).
086:
087: # So in gevent 1.5 we go back to maintaining order. But it's
088: # still important not to make duplicate calls, and it's also
089: # important to avoid O(n^2) behaviour that can result from
090: # naive use of a simple list due to the need to handle removed
091: # links in the _notify_links loop. Cython has special support for
092: # built-in sets, lists, and dicts, but not ordereddict. Rather than
093: # use two data structures, or a dict({link: order}), we simply use a
094: # list and remove objects as we go, keeping track of them so as not to
095: # have duplicates called. This makes `unlink` O(n), but we can avoid
096: # calling it in the common case in _wait_core (even so, the number of
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106: # as a waiting method is entered, even if it won't have to wait, we
107: # need to grab the hub and assign ownership. But we don't want to grab one prematurely.
108: # The example is three threads, the main thread and two worker threads; if we create
109: # a Semaphore in the main thread but only use it in the two threads, if we had grabbed
110: # the main thread's hub, the two worker threads would have a dependency on it, meaning that
111: # if the main event loop is blocked, the worker threads might get blocked too.
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__pyx_t_3 = (((PyObject *)__pyx_v_self->hub) != Py_None); __pyx_t_5 = (__pyx_t_3 != 0); if (__pyx_t_5) { } else { __pyx_t_2 = __pyx_t_5; goto __pyx_L11_bool_binop_done; } __pyx_t_1 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self->hub), __pyx_n_s_thread_ident); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 190, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); __Pyx_INCREF(__pyx_v_6gevent_27_gevent_c_abstract_linkable__get_thread_ident); __pyx_t_6 = __pyx_v_6gevent_27_gevent_c_abstract_linkable__get_thread_ident; __pyx_t_7 = NULL; __pyx_t_8 = 0; if (CYTHON_UNPACK_METHODS && unlikely(PyMethod_Check(__pyx_t_6))) { __pyx_t_7 = PyMethod_GET_SELF(__pyx_t_6); if (likely(__pyx_t_7)) { PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_6); __Pyx_INCREF(__pyx_t_7); __Pyx_INCREF(function); __Pyx_DECREF_SET(__pyx_t_6, function); __pyx_t_8 = 1; } } { PyObject *__pyx_callargs[1] = {__pyx_t_7, }; __pyx_t_4 = __Pyx_PyObject_FastCall(__pyx_t_6, __pyx_callargs+1-__pyx_t_8, 0+__pyx_t_8); __Pyx_XDECREF(__pyx_t_7); __pyx_t_7 = 0; if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 190, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_4); __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0; } __pyx_t_6 = PyObject_RichCompare(__pyx_t_1, __pyx_t_4, Py_NE); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) __PYX_ERR(0, 190, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0; __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_5 < 0)) __PYX_ERR(0, 190, __pyx_L1_error) __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0; __pyx_t_2 = __pyx_t_5; __pyx_L11_bool_binop_done:; if (unlikely(__pyx_t_2)) { /* … */ }
191: raise InvalidThreadUseError(
192: self.hub,
+193: get_hub_if_exists(),
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195: )
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__Pyx_XDECREF((PyObject *)__pyx_r); __Pyx_INCREF((PyObject *)__pyx_v_self->hub); __pyx_r = __pyx_v_self->hub; goto __pyx_L0;
197:
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199: # If this object is ready to be notified, begin the process.
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+201: hub = None
__Pyx_INCREF(Py_None);
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+202: try:
{ /*try:*/ { /* … */ } __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0; __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0; __Pyx_XDECREF(__pyx_t_6); __pyx_t_6 = 0; goto __pyx_L12_try_end; __pyx_L7_error:; __Pyx_XDECREF(__pyx_t_7); __pyx_t_7 = 0; /* … */ __Pyx_XGIVEREF(__pyx_t_4); __Pyx_XGIVEREF(__pyx_t_5); __Pyx_XGIVEREF(__pyx_t_6); __Pyx_ExceptionReset(__pyx_t_4, __pyx_t_5, __pyx_t_6); goto __pyx_L1_error; __pyx_L8_exception_handled:; __Pyx_XGIVEREF(__pyx_t_4); __Pyx_XGIVEREF(__pyx_t_5); __Pyx_XGIVEREF(__pyx_t_6); __Pyx_ExceptionReset(__pyx_t_4, __pyx_t_5, __pyx_t_6); __pyx_L12_try_end:; }
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+204: except InvalidThreadUseError:
__pyx_t_8 = __Pyx_PyErr_ExceptionMatches(__pyx_v_6gevent_27_gevent_c_abstract_linkable_InvalidThreadUseError); if (__pyx_t_8) { __Pyx_ErrRestore(0,0,0); goto __pyx_L8_exception_handled; } goto __pyx_L9_except_error; __pyx_L9_except_error:;
205: # The current hub doesn't match self.hub. That's OK,
206: # we still want to start the notifier in the thread running
207: # self.hub (because the links probably contains greenlet.switch
208: # calls valid only in that hub)
209: pass
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__pyx_t_1 = (((PyObject *)__pyx_v_hub) != Py_None); __pyx_t_3 = (__pyx_t_1 != 0); if (__pyx_t_3) { /* … */ goto __pyx_L13; }
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212: else:
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214: # to just directly call the callbacks.
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218: finally:
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220:
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222: # The core of the _notify_links method to notify
223: # links in order. Lets the ``links`` list be mutated,
224: # and only notifies up to the last item in the list, in case
225: # objects are added to it.
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__pyx_t_1 = (__pyx_v_links != Py_None)&&(PyList_GET_SIZE(__pyx_v_links) != 0);
__pyx_t_2 = ((!__pyx_t_1) != 0);
if (__pyx_t_2) {
/* … */
}
227: # HMM. How did we get here? Running two threads at once?
228: # Seen once on Py27/Win/Appveyor
229: # https://ci.appveyor.com/project/jamadden/gevent/builds/36875645/job/9wahj9ft4h4qa170
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231:
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__pyx_v_only_while_ready = (!(__pyx_v_self->_notify_all != 0));
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while (1) {
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if (!__pyx_t_2) break;
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+239: break
goto __pyx_L5_break;
240:
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244: # XXX: JAM: What was I thinking? This doesn't make much sense,
245: # there's a good chance `link` will be deallocated, and its id() will
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273: # This method must hold the GIL, or be guarded with the lock that guards
274: # this object. Thus, while we are notifying objects, an object from another
275: # thread simply cannot arrive and mutate ``_links`` or ``arrived_while_waiting``
276:
277: # ``arrived_while_waiting`` is a list of greenlet.switch methods
278: # to call. These were objects that called wait() while we were processing,
279: # and which would have run *before* those that had actually waited
280: # and blocked. Instead of returning True immediately, we add them to this
281: # list so they wait their turn.
282:
283: # We release self._notifier here when done invoking links.
284: # The object itself becomes false in a boolean way as soon
285: # as this method returns.
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288: # XXX: How did we get here?
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291: # Early links are allowed to remove later links, and links
292: # are allowed to add more links, thus we must not
293: # make a copy of our the ``_links`` list, we must traverse it and
294: # mutate in place.
295: #
296: # We were ready() at the time this callback was scheduled; we
297: # may not be anymore, and that status may change during
298: # callback processing. Some of our subclasses (Event) will
299: # want to notify everyone who was registered when the status
300: # became true that it was once true, even though it may not be
301: # any more. In that case, we must not keep notifying anyone that's
302: # newly added after that, even if we go ready again.
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305: # Now, those that arrived after we had begun the notification
306: # process. Follow the same rules, stop with those that are
307: # added so far to prevent starvation.
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314: finally:
315: # We should not have created a new notifier even if callbacks
316: # released us because we loop through *all* of our links on the
317: # same callback while self._notifier is still true.
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320: # TODO: Maybe we should intelligently reset self.hub to
321: # free up thread affinity? In case of a pathological situation where
322: # one object was used from one thread once & first, but usually is
323: # used by another thread.
324: #
325: # BoundedSemaphore does this.
326: # Now we may be ready or not ready. If we're ready, which
327: # could have happened during the last link we called, then we
328: # must have more links than we started with. We need to schedule the
329: # wakeup.
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331: # If we added unswitched greenlets, however, don't add them back to the links yet.
332: # We wouldn't be able to call them in this hub anyway.
333: # TODO: Instead of just adding these back to self._links, we should try to detect their
334: # "home" hub and mode the callback to that hub. As it stands, there's a chance that
335: # if no greenlet tries to acquire/release this object in that hub, these objects
336: # will never get to run.
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338:
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342:
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385: """
386: The core of the wait implementation, handling switching and
387: linking.
388:
389: This method is NOT safe to call from multiple threads.
390:
391: ``self.hub`` must be initialized before entering this method.
392: The hub that is set is considered the owner and cannot be changed
393: while this method is running. It must only be called from the thread
394: where ``self.hub`` is the current hub.
395:
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398:
399: :return: A true value if the wait succeeded without timing out.
400: That is, a true return value means we were notified and control
401: resumed in this greenlet.
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404: # We already checked above (_wait()) if we're ready()
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+406: self.__wait_to_be_notified(
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407: True,# Use rawlink()
408: )
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+410: except catch as ex:
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+412: raise
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413: # test_set_and_clear and test_timeout in test_threading
414: # rely on the exact return values, not just truthish-ness
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416:
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418: # pylint:disable=unused-argument
419: # Subclasses should override this to return a value from _wait.
420: # By default we return None.
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422:
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424: # Watch where we could potentially release the GIL.
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426:
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430: # We're already notifying waiters; one of them must have run
431: # and switched to this greenlet, which arrived here. Alternately,
432: # we could be in a separate thread (but we're holding the GIL/object lock)
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434:
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436:
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439:
+440: def _at_fork_reinit(self):
/* Python wrapper */ static PyObject *__pyx_pw_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_17_at_fork_reinit(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/ PyDoc_STRVAR(__pyx_doc_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_16_at_fork_reinit, "AbstractLinkable._at_fork_reinit(self)\n\n This method was added in Python 3.9 and is called by logging.py\n ``_after_at_fork_child_reinit_locks`` on Lock objects.\n\n It is also called from threading.py, ``_after_fork`` in\n ``_reset_internal_locks``, and that can hit ``Event`` objects.\n\n Subclasses should reset themselves to an initial state. This\n includes unlocking/releasing, if possible. This method detaches from the\n previous hub and drops any existing notifier.\n "); static PyMethodDef __pyx_mdef_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_17_at_fork_reinit = {"_at_fork_reinit", (PyCFunction)__pyx_pw_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_17_at_fork_reinit, METH_NOARGS, __pyx_doc_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_16_at_fork_reinit}; static PyObject *__pyx_pw_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_17_at_fork_reinit(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused) { CYTHON_UNUSED PyObject *const *__pyx_kwvalues = __Pyx_KwValues_VARARGS(__pyx_args, __pyx_nargs); PyObject *__pyx_r = 0; __Pyx_RefNannyDeclarations __Pyx_RefNannySetupContext("_at_fork_reinit (wrapper)", 0); __pyx_r = __pyx_pf_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_16_at_fork_reinit(((struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *)__pyx_v_self)); /* function exit code */ __Pyx_RefNannyFinishContext(); return __pyx_r; } static PyObject *__pyx_pf_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_16_at_fork_reinit(struct __pyx_obj_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable *__pyx_v_self) { PyObject *__pyx_r = NULL; __Pyx_RefNannyDeclarations __Pyx_RefNannySetupContext("_at_fork_reinit", 0); /* … */ /* function exit code */ __pyx_r = Py_None; __Pyx_INCREF(Py_None); __Pyx_XGIVEREF(__pyx_r); __Pyx_RefNannyFinishContext(); return __pyx_r; } /* … */ __pyx_tuple__21 = PyTuple_Pack(1, __pyx_n_s_self); if (unlikely(!__pyx_tuple__21)) __PYX_ERR(0, 440, __pyx_L1_error) __Pyx_GOTREF(__pyx_tuple__21); __Pyx_GIVEREF(__pyx_tuple__21); /* … */ __pyx_t_1 = __Pyx_CyFunction_New(&__pyx_mdef_6gevent_27_gevent_c_abstract_linkable_16AbstractLinkable_17_at_fork_reinit, __Pyx_CYFUNCTION_CCLASS, __pyx_n_s_AbstractLinkable__at_fork_reinit, NULL, __pyx_n_s_gevent__gevent_c_abstract_linkab, __pyx_d, ((PyObject *)__pyx_codeobj__22)); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 440, __pyx_L1_error) __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem((PyObject *)__pyx_ptype_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable->tp_dict, __pyx_n_s_at_fork_reinit, __pyx_t_1) < 0) __PYX_ERR(0, 440, __pyx_L1_error) __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; PyType_Modified(__pyx_ptype_6gevent_27_gevent_c_abstract_linkable_AbstractLinkable);
441: """
442: This method was added in Python 3.9 and is called by logging.py
443: ``_after_at_fork_child_reinit_locks`` on Lock objects.
444:
445: It is also called from threading.py, ``_after_fork`` in
446: ``_reset_internal_locks``, and that can hit ``Event`` objects.
447:
448: Subclasses should reset themselves to an initial state. This
449: includes unlocking/releasing, if possible. This method detaches from the
450: previous hub and drops any existing notifier.
451: """
+452: self.hub = None
__Pyx_INCREF(Py_None); __Pyx_GIVEREF(Py_None); __Pyx_GOTREF((PyObject *)__pyx_v_self->hub); __Pyx_DECREF((PyObject *)__pyx_v_self->hub); __pyx_v_self->hub = ((struct __pyx_obj_6gevent_29_gevent_c_greenlet_primitives_SwitchOutGreenletWithLoop *)Py_None);
+453: self._notifier = None
__Pyx_INCREF(Py_None); __Pyx_GIVEREF(Py_None); __Pyx_GOTREF(__pyx_v_self->_notifier); __Pyx_DECREF(__pyx_v_self->_notifier); __pyx_v_self->_notifier = Py_None;
454:
+455: def _init():
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+456: greenlet_init() # pylint:disable=undefined-variable
__pyx_f_6gevent_27_gevent_c_abstract_linkable_greenlet_init();
457:
+458: _init()
__pyx_f_6gevent_27_gevent_c_abstract_linkable__init();
459:
460:
+461: from gevent._util import import_c_accel
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+462: import_c_accel(globals(), 'gevent.__abstract_linkable')
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