U pdb3@sdZdZddlZddlZddlZddlZddlmZddlm Z ddlm Z ddlm Z ej Z ej Z ejZejZejdZGd d d ZeZd d Zd dZddZddZddZddZddddZz ddlZWnek rYn XejZZdS)z.A Future class similar to the one in PEP 3148.)Future wrap_futureisfutureN) base_futures)events) exceptions)format_helpersc@seZdZdZeZdZdZdZdZ dZ dZ ddddZ e jZddZd d Zed d Zejd d ZddZddZddZddZddZddZddZddddZdd Zd!d"Zd#d$Zd%d&Z e Z!dS)'ra,This class is *almost* compatible with concurrent.futures.Future. Differences: - This class is not thread-safe. - result() and exception() do not take a timeout argument and raise an exception when the future isn't done yet. - Callbacks registered with add_done_callback() are always called via the event loop's call_soon(). - This class is not compatible with the wait() and as_completed() methods in the concurrent.futures package. (In Python 3.4 or later we may be able to unify the implementations.) 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The other Future may be a concurrent.futures.Future. N) r9rar8r3r!rOr`r>rJ)rbdestr!r>rrr_copy_future_state>s   recststtjjstdts._set_statecs2|r.dkskr"n jdSr()r8r3call_soon_threadsafe) destination) dest_looprb source_looprr_call_check_cancelhs z)_chain_future.._call_check_cancelcsJrdk rrdSdks,kr8|n|dSr()r8Z is_closedrh)rb)rgrjrirkrr_call_set_stateos z&_chain_future.._call_set_state)rrKr\r]rrNrZrB)rbrirlrmr)rgrjrirbrkr _chain_futureRs   rnr cCsNt|r |St|tjjs(td||dkr8t}|}t |||S)z&Wrap concurrent.futures.Future object.z+concurrent.futures.Future is expected, got N) rrKr\r]rrarr Z create_futurern)r"r Z new_futurerrrr|s r)rT__all__Zconcurrent.futuresr\r?Zloggingrrrrr rr0r1r;DEBUGZ STACK_DEBUGrZ _PyFuturerZr[r`rcrernrZ_asyncio ImportErrorZ_CFuturerrrrs:     q  *