o i@sdZddlmZddlmZddlZgZgZea da da ejZ ej ZddZ dd Zd d ZddlZd d ZddddZdejjvr\eedr\eej_ed ededned ededeeeeeddZeeZdS)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`.) )_NONE) copy_globalsNcCs(|tjkr t|StturttjatS)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 U/var/www/apps/myagent/mysuperagent/venv/lib/python3.10/site-packages/gevent/signal.py getsignal&s  r cCsz|tjkr t||S|tjkr|tjkrt|stdt|}|a|tjtjfvr;ddl 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 objectrget_hub) rr_signal_signalSIG_IGNSIG_DFLcallable TypeErrorr r gevent.hubrloop reset_sigchld)r handler old_handlerrr r r signal8s !    rcCsNttr%ddlm}tdkr|ttt}||ttj d}|dSdS)Nr)Greenlet) rrgeventr_child_wakeup_fd_write_child_signal_fd$_child_wakeup_fd_warn_on_full_bufferswitchrr)rgreenletr r r _on_child_hookqs  r"c Csztj|ttjfWdSty@}z&|s|jtjjvr5ddl m }| ddddWYd}~dSWYd}~dSd}~ww)Nrr set_wakeup_fd) ros_writebytesrrOSErrorerrnoignored_errorsrr handle_error)fdwarn_on_full_buffererr r r rs  rTr,cCstj||d}|a|a|S)a Set the wakeup file descriptor to *fd*. When a signal is received, the signal number is written as a single byte into the *fd*. This can be used by a library to wakeup a poll or select call, allowing the signal to be fully processed. .. versionadded:: 25.8.1 r.)rr#rr)r+r,old_fdr r r r#sr#waitpidrr )names_to_ignoredunder_names_to_keep)__doc__ gevent._utilrr rrr__implements____extensions__rrrrr rr" gevent.osrrr#r$hasattrappendglobals __imports____all__r r r r s<  9