ó ĞH/\c@@s!dZddlmZddlmZddlmZddlZgZ gZ ea ejZ ej Zd„Z d„Zd„ZddlZd ejj kr×eed ƒr×eej_e jd ƒe jd ƒne jd ƒe jd ƒeeeƒd e e ddƒZe e ZdS(sW 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 i(tabsolute_import(t_NONE(t copy_globalsNcC@s;|tjkrt|ƒSttkr7ttjƒantS(sÖ 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. (t_signaltSIGCHLDt_signal_getsignalt_child_handlert_INITIAL(t signalnum((s,lib/python2.7/site-packages/gevent/signal.pyt getsignal"s   cC@s´|tjkrt||ƒS|tjkrV|tjkrVt|ƒ rVtdƒ‚nt|ƒ}|a|tjtjfkr°ddl m }t||ƒ|ƒj j ƒn|S(sq 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. sKsignal handler must be signal.SIG_IGN, signal.SIG_DFL, or a callable objecti(tget_hub( RRt_signal_signaltSIG_IGNtSIG_DFLtcallablet TypeErrorR Rt gevent.hubR tloopt reset_sigchld(Rthandlert old_handlerR ((s,lib/python2.7/site-packages/gevent/signal.pytsignal4s! +  cC@sBttƒr>ddlm}|ttjdƒ}|jƒndS(Ni(tGreenlet(RRtgeventRRRtNonetswitch(Rtgreenlet((s,lib/python2.7/site-packages/gevent/signal.pyt_on_child_hookms twaitpidRRR tnames_to_ignoretdunder_names_to_keep((t__doc__t __future__Rt gevent._utilRRRRRt__implements__t__extensions__RR R RRt gevent.osRtosthasattrtappendtglobalst __imports__t__all__(((s,lib/python2.7/site-packages/gevent/signal.pyts.     9 !