ÿØÿà JFIF    ÿÛ „  ( %!1!%)+//.383,7(-.+  -%%-////---/-.+/--+------/------/--0+--/-/-----.-----ÿÀ  ¥2" ÿÄ     ÿÄ J    ! 1AQ"aq2‘#BR‚¡ÁÑ3br’¢±Âð$CSƒ²á4c“%DsÓñÿÄ   ÿÄ *  !1AQa‘"2q3±ð#b¡ÿÚ   ? ¼QxJQaÍuò¸Zö Úü8,ÐÚú "SSn<rçù–´âE—^ªBÖ9À\†¸ÔÁT­ÃÛ5 ëd´³Í#Ý;Þ38œî ¶H£M:wÎ3…³…âpÔF&‚FK¸9„â4àGEõªfÿ ‘ñ(ßw­pŽF|È¥ù®häðÍѶ¹‘[ÒinÙW¶ùñY˜Q{›K"išÒ[Ú8žë\F¹@-?v"ÔU”,ìöžkÿ {I‡£šÍ?e ríV .............................................................................................................................................................................. ............................................................................. ÿØÿà JFIF    ÿÛ „  ( %!1!%)+//.383,7(-.+  -%%-////---/-.+/--+------/------/--0+--/-/-----.-----ÿÀ  ¥2" ÿÄ     ÿÄ J    ! 1AQ"aq2‘#BR‚¡ÁÑ3br’¢±Âð$CSƒ²á4c“%DsÓñÿÄ   ÿÄ *  !1AQa‘"2q3±ð#b¡ÿÚ   ? ¼QxJQaÍuò¸Zö Úü8,ÐÚú "SSn<rçù–´âE—^ªBÖ9À\†¸ÔÁT­ÃÛ5 ëd´³Í#Ý;Þ38œî ¶H£M:wÎ3…³…âpÔF&‚FK¸9„â4àGEõªfÿ ‘ñ(ßw­pŽF|È¥ù®häðÍѶ¹‘[ÒinÙW¶ùñY˜Q{›K"išÒ[Ú8žë\F¹@-?v"ÔU”,ìöžkÿ {I‡£šÍ?e ríV .............................................................................................................................................................................. ............................................................................. 3 u1W@sdZddlmZddlmZddlmZddlmZddlZddlZddlm Z ddl m Z dd l m Z dd l m Z dd lmZeed d ZddZddZddZeZddZddZGdddeZdS)a# pyudev._os.pipe =============== Fallback implementations for pipe. 1. pipe2 from python os module 2. pipe2 from libc 3. pipe from python os module The Pipe class wraps the chosen implementation. .. moduleauthor:: Sebastian Wiesner )absolute_import)division)print_function)unicode_literalsN)partial)fd_pair)ERROR_CHECKERS) SIGNATURES)load_ctypes_library O_CLOEXECicCs"t}|j|||d|dfS)zA ``pipe2`` implementation using ``pipe2`` from ctypes. ``libc`` is a :class:`ctypes.CDLL` object for libc. ``flags`` is an integer providing the flags to ``pipe2``. Return a pair of file descriptors ``(r, w)``. r)rpipe2)libcflagsfdsr/usr/lib/python3.6/pipe.py _pipe2_ctypes4s  rcCsXtj}|tj@dkr0x|D]}t|tjqW|t@dkrTx|D]}t|tqBW|S)zA ``pipe2`` implementation using :func:`os.pipe`. ``flags`` is an integer providing the flags to ``pipe2``. .. warning:: This implementation is not atomic! Return a pair of file descriptors ``(r, w)``. r)ospipe O_NONBLOCKset_fd_status_flagr set_fd_flag)rrfdrrr_pipe2_by_pipeBs    rc CsNttdrtjSy$tdtt}t|dr2tt|StSt k rHtSXdS)z]Find the appropriate implementation for ``pipe2``. Return a function implementing ``pipe2``.r rN) hasattrrr r r rrrr ImportError)rrrr_get_pipe2_implementationXs  rcCs(tj|tjd}tj|tj||BdS)zwSet a flag on a file descriptor. ``fd`` is the file descriptor or file object, ``flag`` the flag as integer. rN)fcntlZF_GETFDZF_SETFD)rflagrrrrrksrcCs(tj|tjd}tj|tj||BdS)z~Set a status flag on a file descriptor. ``fd`` is the file descriptor or file object, ``flag`` the flag as integer. rN)rZF_GETFLZF_SETFL)rrrrrrrusrc@s,eZdZdZeddZddZddZdS) PipezA unix pipe. A pipe object provides two file objects: :attr:`source` is a readable file object, and :attr:`sink` a writeable. Bytes written to :attr:`sink` appear at :attr:`source`. Open a pipe with :meth:`open()`. cCsttjtB\}}|||S)zLOpen and return a new :class:`Pipe`. The pipe uses non-blocking IO.)_PIPE2rrr )clssourcesinkrrropensz Pipe.opencCs$tj|dd|_tj|dd|_dS)zCreate a new pipe object from the given file descriptors. ``source_fd`` is a file descriptor for the readable side of the pipe, ``sink_fd`` is a file descriptor for the writeable side.rbrwbN)rfdopenr#r$)selfZ source_fdZsink_fdrrr__init__sz Pipe.__init__c Cs z|jjWd|jjXdS)zCloses both sides of the pipe.N)r#closer$)r)rrrr+sz Pipe.closeN)__name__ __module__ __qualname____doc__ classmethodr%r*r+rrrrr s  r )r/Z __future__rrrrrr functoolsrZpyudev._ctypeslib.libcrrr Zpyudev._ctypeslib.utilsr getattrr rrrr!rrobjectr rrrr s&