3
��<_�! � @ s� d dl mZ d dlZd dlZd dlZd dlZd dlZd dlZd dlm Z m
Z
dd� Z da e
dd� �Z
d d
� Ze� ZejZeje_ejge_ejej�ejkr�eej�ZndZd d
� Ze
dd� �Zdd� Zg a da e
dd� �Z dS )� )�print_functionN)�closing�contextmanagerc
C sp t | d�r| jd� nVy ddl}W n tk
r> td��Y n.X | j� }|j||j�}|j||j||jB � dS )z�Ensures that the socket is not inherited by child processes
Raises:
EnvironmentError
NotImplementedError: With Python <3.4 on Windows
�set_inheritableFr Nz+Not implemented for older Python on Windows) �hasattrr �fcntl� ImportError�NotImplementedError�filenoZF_GETFDZF_SETFDZ
FD_CLOEXEC)�sockr �fd�flags� r �$/usr/lib64/python3.6/_ossighelper.py� ensure_socket_not_inheritable s
r Fc ' # s� t rdV dS ddlm� tjdkp4tjdd� d
k} ttd�}| sL| rVdV dS tj � \�}t
����" t
|��� x"�|gD ]}|j d � t |� q�W yt
j|j� �}W n tk
r� dV dS X d
a � �fd d �}zxtjdk� r�� jj�j� �}n� jj�j� �}� j|� j� jj� jjB � jjB � jjB |�}z
dV W d� j|� X W dt
j|�}||j� k�rzt
j|� d a X W dQ R X W dQ R X dS )a A decorator for functions which create a glib event loop to keep
Python signal handlers working while the event loop is idling.
In case an OS signal is received will wake the default event loop up
shortly so that any registered Python signal handlers registered through
signal.signal() can run.
Works on Windows but needs Python 3.5+.
In case the wrapped function is not called from the main thread it will be
called as is and it will not wake up the default loop for signals.
Nr )�GLib�nt� � � �
socketpairFTc sN |� j @ rFyt�jd��S tk
r@ } z t|� dS d }~X nX dS dS d S )N� FT)ZIO_IN�boolZrecv�EnvironmentError�print)�sourceZ condition�e)r � read_socketr r �
signal_notifyi s
z'wakeup_on_signal.<locals>.signal_notify)r r ) �_wakeup_fd_is_activeZ
gi.repositoryr �os�name�sys� version_infor �socketr r Z setblockingr �signal�
set_wakeup_fdr
�
ValueErrorZ IOChannelZwin32_new_socketZunix_newZ io_add_watchZPRIORITY_DEFAULTZ IOCondition�INZHUPZNVALZERRZ
source_remove) Z set_wakeup_fd_supports_socketZhas_socketpairZ write_socketr Zorig_fdr ZchannelZ source_idZwrite_fdr )r r r �wakeup_on_signal8 sL
r) c C sJ t jdkrtjdd tj�S tjdkr<tjdtjd d� �S tjd �S d S )Nr z
python dll�cygwinzlibpython%d.%d.dllr )r r! �ctypesZPyDLLr" Z dllhandle�platformr# r r r r �create_pythonapi� s
r- r c C s t jt j�t jko tt j�tkS )z?Returns if on SIGINT the default Python handler would be called)r% � getsignal�SIGINT�default_int_handler� PyOS_getsig�startup_sigint_ptrr r r r �sigint_handler_is_default� s r3 c c sX t j t j| � tt j�}z
dV W dt jt j�| krRtt j�|krRt j t jt j� X dS )z�Context manager for saving/restoring the SIGINT handler default state.
Will only restore the default handler again if the handler is not changed
while the context is active.
N)r% r/ r1 r. r0 )ZhandlerZsig_ptrr r r �&sigint_handler_set_and_restore_default� s
r4 c C s t j� jdkS )z@Returns True in case the function is called from the main threadZ
MainThread)� threadingZcurrent_threadr! r r r r �is_main_thread� s r6 c c s� t � sdV dS t� sPtrFtj| � z
dV W dtj� }trB|� X ndV dS dadd� }tj| � z t|�� dV W dQ R X W dtr�tjtj d� ntj� X dS )a� Installs a SIGINT signal handler in case the default Python one is
active which calls 'callback' in case the signal occurs.
Only does something if called from the main thread.
In case of nested context managers the signal handler will be only
installed once and the callbacks will be called in the reverse order
of their registration.
The old signal handler will be restored in case no signal handler is
registered while the context is active.
NFc S s t rd S da tj� � d S )NT)�_sigint_called�_callback_stack�pop)Zsig_num�framer r r �sigint_handler� s z0register_sigint_fallback.<locals>.sigint_handler)
r6 r3 r8 �appendr9 r7 r4 r% r0 r/ )�callback�cbr; r r r �register_sigint_fallback� s,
r? ���) Z
__future__r r r" r$ r% r+ r5 �
contextlibr r r r r) r- Zpydllr1 Zc_void_pZrestypeZc_intZargtypesr. r/ r0 r2 r3 r4 r6 r8 r7 r? r r r r �<module> s0 V