events._get_running_loop

実装

# A TLS for the running event loop, used by _get_running_loop.
class _RunningLoop(threading.local):
    loop_pid = (None, None)

_running_loop = _RunningLoop()

def _get_running_loop():
    """Return the running event loop or None.

    This is a low-level function intended to be used by event loops.
    This function is thread-specific.
    """
    # NOTE: this function is implemented in C (see _asynciomodule.c)
    running_loop, pid = _running_loop.loop_pid
    if running_loop is not None and pid == os.getpid():
        return running_loop

引数

なし

戻り値

なし

内容

import asyncio したタイミングで、 _RunningLoop のインスタンス生成を行う
runners.run 関数から初回呼び出しされた時は、None を返す