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 002: ###
 003: # This file is ``gevent._semaphore`` so that it can be compiled by Cython
 004: # individually. However, this is not the place to import from. Everyone,
 005: # gevent internal code included, must import from ``gevent.lock``.
 006: # The only exception are .pxd files which need access to the
 007: # C code; the PURE_PYTHON things that have to happen and which are
 008: # handled in ``gevent.lock``, do not apply to them.
 009: ###
 010: from __future__ import print_function, absolute_import, division
 011: 
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 013:     'Semaphore',
 014:     'BoundedSemaphore',
 015: ]
 016: 
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 022: 
 023: 
+024: class Semaphore(AbstractLinkable): # pylint:disable=undefined-variable
struct __pyx_vtabstruct_6gevent_19_gevent_c_semaphore_Semaphore {
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 025:     """
 026:     Semaphore(value=1) -> Semaphore
 027: 
 028:     .. seealso:: :class:`BoundedSemaphore` for a safer version that prevents
 029:        some classes of bugs. If unsure, most users should opt for `BoundedSemaphore`.
 030: 
 031:     A semaphore manages a counter representing the number of `release`
 032:     calls minus the number of `acquire` calls, plus an initial value.
 033:     The `acquire` method blocks if necessary until it can return
 034:     without making the counter negative. A semaphore does not track ownership
 035:     by greenlets; any greenlet can call `release`, whether or not it has previously
 036:     called `acquire`.
 037: 
 038:     If not given, ``value`` defaults to 1.
 039: 
 040:     The semaphore is a context manager and can be used in ``with`` statements.
 041: 
 042:     This Semaphore's ``__exit__`` method does not call the trace function
 043:     on CPython, but does under PyPy.
 044: 
 045: 
 046:     .. versionchanged:: 1.4.0
 047:         Document that the order in which waiters are awakened is not specified. It was not
 048:         specified previously, but due to CPython implementation quirks usually went in FIFO order.
 049:     .. versionchanged:: 1.5a3
 050:        Waiting greenlets are now awakened in the order in which they waited.
 051:     .. versionchanged:: 1.5a3
 052:        The low-level ``rawlink`` method (most users won't use this) now automatically
 053:        unlinks waiters before calling them.
 054:     """
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 238: # https://mail.python.org/pipermail/cython-devel/2015-October/004571.html
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 241: # It hasn't been tested since then, and PURE_PYTHON is assumed to be true
 242: # for PyPy in all cases anyway, so this does nothing.
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