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author | Victor Stinner <victor.stinner@gmail.com> | 2013-12-02 11:41:54 (GMT) |
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committer | Victor Stinner <victor.stinner@gmail.com> | 2013-12-02 11:41:54 (GMT) |
commit | 550a09ef86ee5a11af68d5670a38ae41e72f0eba (patch) | |
tree | 08e6881f842712d12e6779170bc577b11e767d3d | |
parent | 4e70bb84e6de52369ca9f3eb5c76b34f421d9e92 (diff) | |
download | cpython-550a09ef86ee5a11af68d5670a38ae41e72f0eba.zip cpython-550a09ef86ee5a11af68d5670a38ae41e72f0eba.tar.gz cpython-550a09ef86ee5a11af68d5670a38ae41e72f0eba.tar.bz2 |
Issue #19833: Document more asyncio.BaseEventLoop methods
-rw-r--r-- | Doc/library/asyncio.rst | 145 |
1 files changed, 143 insertions, 2 deletions
diff --git a/Doc/library/asyncio.rst b/Doc/library/asyncio.rst index b2c72cb..d894b27 100644 --- a/Doc/library/asyncio.rst +++ b/Doc/library/asyncio.rst @@ -77,7 +77,76 @@ Getting an event loop The easiest way to get an event loop is to call the :func:`get_event_loop` function. -.. XXX more docs +.. function:: get_event_loop() + + Get the event loop for current context. Returns an event loop object + implementing :class:`BaseEventLoop` interface, or raises an exception in case no + event loop has been set for the current context and the current policy does + not specify to create one. It should never return ``None``. + + +Run an event loop +^^^^^^^^^^^^^^^^^ + +.. method:: BaseEventLoop.run_forever() + + Run until :meth:`stop` is called. + +.. method:: BaseEventLoop.run_in_executor(executor, callback, \*args) + + XXX + +.. method:: BaseEventLoop.run_until_complete(future) + + Run until the :class:`Future` is done. + + If the argument is a coroutine, it is wrapped in a :class:`Task`. + + Return the Future's result, or raise its exception. + +.. method:: stop() + + Stop running the event loop. + + Every callback scheduled before :meth:`stop` is called will run. + Callback scheduled after :meth:`stop` is called won't. However, those + callbacks will run if :meth:`run_forever` is called again later. + +.. method:: BaseEventLoop.close() + + Close the event loop. + + This clears the queues and shuts down the executor, but does not wait for + the executor to finish. + +.. method:: BaseEventLoop.is_running() + + Returns running status of event loop. + + +Calls +^^^^^ + +.. method:: BaseEventLoop.call_soon(callback, \*args) + + Arrange for a callback to be called as soon as possible. + + This operates as a FIFO queue, callbacks are called in the order in + which they are registered. Each callback will be called exactly once. + + Any positional arguments after the callback will be passed to the + callback when it is called. + +.. method: BaseEventLoop.call_soon_threadsafe(callback, \*args) + + Like :meth:`call_soon`, but thread safe. + +.. method:: BaseEventLoop.set_default_executor(executor) + + XXX + + + Delayed calls ^^^^^^^^^^^^^ @@ -115,6 +184,38 @@ a different clock than :func:`time.time`. This method's behavior is the same as :meth:`call_later`. +.. method:: BaseEventLoop.time() + + Return the time according to the event loop's clock. + + The clock :func:`time.monotonic` is used by default. + + +Creating listening connections +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +.. method:: BaseEventLoop.create_server(protocol_factory, host=None, port=None, \*, family=socket.AF_UNSPEC, flags=socket.AI_PASSIVE, sock=None, backlog=100, ssl=None, reuse_address=None) + + XXX + + * *protocol_factory* + * *host*, *port* + * *family* + * *flags* + * *sock* + * *backlog* : the maximum number of queued connections and should be at + least ``0``; the maximum value is system-dependent (usually ``5``), + the minimum value is forced to ``0``. + * *ssl*: ``True`` or :class:`ssl.SSLContext` + * *reuse_address*: if ``True``, set :data:`socket.SO_REUSEADDR` option + on the listening socket. Default value: ``True`` on POSIX systems, + ``False`` on Windows. + +.. method:: BaseEventLoop.create_datagram_endpoint(protocol_factory, local_addr=None, remote_addr=None, \*, family=0, proto=0, flags=0) + + XXX + + Creating connections ^^^^^^^^^^^^^^^^^^^^ @@ -180,6 +281,46 @@ Creating connections to bind the socket to locally. The *local_host* and *local_port* are looked up using getaddrinfo(), similarly to *host* and *port*. +.. method:: BaseEventLoop.connect_read_pipe(protocol_factory, pipe) + + XXX + +.. method:: BaseEventLoop.connect_write_pipe(protocol_factory, pipe) + + XXX + + +Resolve name +^^^^^^^^^^^^ + +.. method:: BaseEventLoop.getaddrinfo(host, port, \*, family=0, type=0, proto=0, flags=0) + + XXX + +.. method:: BaseEventLoop.getnameinfo(sockaddr, flags=0) + + XXX + + +Running subprocesses +^^^^^^^^^^^^^^^^^^^^ + +.. method:: BaseEventLoop.subprocess_shell(protocol_factory, cmd, \*, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=False, shell=True, bufsize=0, \*\*kwargs) + + XXX + + See the constructor of the :class:`subprocess.Popen` class for parameters. + +.. method:: BaseEventLoop.subprocess_exec(protocol_factory, \*args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=False, shell=False, bufsize=0, \*\*kwargs) + + XXX + + See the constructor of the :class:`subprocess.Popen` class for parameters. + +.. seealso:: + + The :mod:`subprocess` module. + .. _protocol: @@ -366,7 +507,7 @@ Transports Transports are classed provided by :mod:`asyncio` in order to abstract various kinds of communication channels. You generally won't instantiate -a transport yourself; instead, you will call a :class:`EventLoop` method +a transport yourself; instead, you will call a :class:`BaseEventLoop` method which will create the transport and try to initiate the underlying communication channel, calling you back when it succeeds. |