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2014-09-30: Tulip 3.4.2
=======================
New shiny methods like create_task(), better documentation, much better debug
mode, better tests.
asyncio API
-----------
* Add BaseEventLoop.create_task() method: schedule a coroutine object.
It allows other asyncio implementations to use their own Task class to
change its behaviour.
* New BaseEventLoop methods:
- create_task(): schedule a coroutine
- get_debug()
- is_closed()
- set_debug()
* Add _FlowControlMixin.get_write_buffer_limits() method
* sock_recv(), sock_sendall(), sock_connect(), sock_accept() methods of
SelectorEventLoop now raise an exception if the socket is blocking mode
* Include unix_events/windows_events symbols in asyncio.__all__.
Examples: SelectorEventLoop, ProactorEventLoop, DefaultEventLoopPolicy.
* attach(), detach(), loop, active_count and waiters attributes of the Server
class are now private
* BaseEventLoop: run_forever(), run_until_complete() now raises an exception if
the event loop was closed
* close() now raises an exception if the event loop is running, because pending
callbacks would be lost
* Queue now accepts a float for the maximum size.
* Process.communicate() now ignores BrokenPipeError and ConnectionResetError
exceptions, as Popen.communicate() of the subprocess module
Performances
------------
* Optimize handling of cancelled timers
Debug
-----
* Future (and Task), CoroWrapper and Handle now remembers where they were
created (new _source_traceback object), traceback displayed when errors are
logged.
* On Python 3.4 and newer, Task destrutor now logs a warning if the task was
destroyed while it was still pending. It occurs if the last reference
to the task was removed, while the coroutine didn't finish yet.
* Much more useful events are logged:
- Event loop closed
- Network connection
- Creation of a subprocess
- Pipe lost
- Log many errors previously silently ignored
- SSL handshake failure
- etc.
* BaseEventLoop._debug is now True if the envrionement variable
PYTHONASYNCIODEBUG is set
* Log the duration of DNS resolution and SSL handshake
* Log a warning if a callback blocks the event loop longer than 100 ms
(configurable duration)
* repr(CoroWrapper) and repr(Task) now contains the current status of the
coroutine (running, done), current filename and line number, and filename and
line number where the object was created
* Enhance representation (repr) of transports: add the file descriptor, status
(idle, polling, writing, etc.), size of the write buffer, ...
* Add repr(BaseEventLoop)
* run_until_complete() doesn't log a warning anymore when called with a
coroutine object which raises an exception.
Bugfixes
--------
* windows_utils.socketpair() now ensures that sockets are closed in case
of error.
* Rewrite bricks of the IocpProactor() to make it more reliable
* IocpProactor destructor now closes it.
* _OverlappedFuture.set_exception() now cancels the overlapped operation.
* Rewrite _WaitHandleFuture:
- cancel() is now able to signal the cancellation to the overlapped object
- _unregister_wait() now catchs and logs exceptions
* PipeServer.close() (class used on Windows) now cancels the accept pipe
future.
* Rewrite signal handling in the UNIX implementation of SelectorEventLoop:
use the self-pipe to store pending signals instead of registering a
signal handler calling directly _handle_signal(). The change fixes a
race condition.
* create_unix_server(): close the socket on error.
* Fix wait_for()
* Rewrite gather()
* drain() is now a classic coroutine, no more special return value (empty
tuple)
* Rewrite SelectorEventLoop.sock_connect() to handle correctly timeout
* Process data of the self-pipe faster to accept more pending events,
especially signals written by signal handlers: the callback reads all pending
data, not only a single byte
* Don't try to set the result of a Future anymore if it was cancelled
(explicitly or by a timeout)
* CoroWrapper now works around CPython issue #21209: yield from & custom
generator classes don't work together, issue with the send() method. It only
affected asyncio in debug mode on Python older than 3.4.2
Misc changes
------------
* windows_utils.socketpair() now supports IPv6.
* Better documentation (online & docstrings): fill remaining XXX, more examples
* new asyncio.coroutines submodule, to ease maintenance with the trollius
project: @coroutine, _DEBUG, iscoroutine() and iscoroutinefunction() have
been moved from asyncio.tasks to asyncio.coroutines
* Cleanup code, ex: remove unused attribute (ex: _rawsock)
* Reuse os.set_blocking() of Python 3.5.
* Close explicitly the event loop in Tulip examples.
* runtests.py now mention if tests are running in release or debug mode.
2014-05-19: Tulip 3.4.1
=======================
2014-02-24: Tulip 0.4.1
=======================
2014-02-10: Tulip 0.3.1
=======================
* Add asyncio.subprocess submodule and the Process class.
2013-11-25: Tulip 0.2.1
=======================
* Add support of subprocesses using transports and protocols.
2013-10-22: Tulip 0.1.1
=======================
* First release.
Creation of the project
=======================
* 2013-10-14: The tulip package was renamed to asyncio.
* 2012-10-16: Creation of the Tulip project, started as mail threads on the
python-ideas mailing list.
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