a 'fF@sdZddlmZddlmZddlmZddlZgZ gZ ea ejZ ej ZddZ dd Zd d ZddlZd ejj vreed reej_e d e dne d e deeee e ddZe e ZdS)aj Cooperative implementation of special cases of :func:`signal.signal`. This module is designed to work with libev's child watchers, as used by default in :func:`gevent.os.fork` Note that each ``SIGCHLD`` handler will be run in a new greenlet when the signal is delivered (just like :class:`gevent.hub.signal`) The implementations in this module are only monkey patched if :func:`gevent.os.waitpid` is being used (the default) and if :const:`signal.SIGCHLD` is available; see :func:`gevent.os.fork` for information on configuring this not to be the case for advanced uses. .. versionadded:: 1.1b4 .. versionchanged:: 1.5a4 Previously there was a backwards compatibility alias ``gevent.signal``, introduced in 1.1b4, that partly shadowed this module, confusing humans and static analysis tools alike. That alias has been removed. (See `gevent.signal_handler`.) )absolute_import)_NONE) copy_globalsNcCs(|tjkrt|Sttur$ttjatS)z Exactly the same as :func:`signal.getsignal` except where :const:`signal.SIGCHLD` is concerned. For :const:`signal.SIGCHLD`, this cooperates with :func:`signal` to provide consistent answers. )_signalSIGCHLD_signal_getsignal_child_handler_INITIAL) signalnumr [/var/www/staging/api/virtual_environments/venv/lib/python3.9/site-packages/gevent/signal.py getsignal's   r cCsz|tjkrt||S|tjkr8|tjkr8t|s8tdt|}|a|tjtjfvrvddl m }t|||j |S)aq Exactly the same as :func:`signal.signal` except where :const:`signal.SIGCHLD` is concerned. .. note:: A :const:`signal.SIGCHLD` handler installed with this function will only be triggered for children that are forked using :func:`gevent.os.fork` (:func:`gevent.os.fork_and_watch`); children forked before monkey patching, or otherwise by the raw :func:`os.fork`, will not trigger the handler installed by this function. (It's unlikely that a SIGCHLD handler installed with the builtin :func:`signal.signal` would be triggered either; libev typically overwrites such a handler at the C level. At the very least, it's full of race conditions.) .. note:: Use of ``SIG_IGN`` and ``SIG_DFL`` may also have race conditions with libev child watchers and the :mod:`gevent.subprocess` module. .. versionchanged:: 1.2a1 If ``SIG_IGN`` or ``SIG_DFL`` are used to ignore ``SIGCHLD``, a future use of ``gevent.subprocess`` and libev child watchers will once again work. However, on Python 2, use of ``os.popen`` will fail. .. versionchanged:: 1.1rc2 Allow using ``SIG_IGN`` and ``SIG_DFL`` to reset and ignore ``SIGCHLD``. However, this allows the possibility of a race condition if ``gevent.subprocess`` had already been used. zKsignal handler must be signal.SIG_IGN, signal.SIG_DFL, or a callable objectr)get_hub) rr_signal_signalSIG_IGNSIG_DFLcallable TypeErrorr rZ gevent.hubrloopZ reset_sigchld)r handlerZ old_handlerrr r r signal9s!     rcCs.ttr*ddlm}|ttjd}|dS)Nr)Greenlet)rrgeventrrrswitch)rZgreenletr r r _on_child_hookrs rwaitpidrr )Znames_to_ignoreZdunder_names_to_keep)__doc__ __future__rZ gevent._utilrr rrrZ__implements__Z__extensions__rrr rrZ gevent.osroshasattrappendglobalsZ __imports____all__r r r r s0   9