gevent.select – Waiting for I/O completion

Waiting for I/O completion.

exception error

Bases: exceptions.Exception

class poll[source]

Bases: object

An implementation of select.poll that blocks only the current greenlet.

Caution

POLLPRI data is not supported.

New in version 1.1b1.

Changed in version 1.5: This is now always defined, regardless of whether the standard library defines select.poll() or not. Note that it may have different performance characteristics.

poll(timeout=None)[source]

poll the registered fds.

Changed in version 1.2a1: File descriptors that are closed are reported with POLLNVAL.

Changed in version 1.3a2: Under libuv, interpret timeout values less than 0 the same as None, i.e., block. This was always the case with libev.

unregister(fd)[source]

Unregister the fd.

Changed in version 1.2a1: Raise a KeyError if fd was not registered, like the standard library. Previously gevent did nothing.

select(rlist, wlist, xlist, timeout=None)[source]

An implementation of select.select() that blocks only the current greenlet.

Caution

xlist is ignored.

Changed in version 1.2a1: Raise a ValueError if timeout is negative. This matches Python 3’s behaviour (Python 2 would raise a select.error). Previously gevent had undefined behaviour.

Changed in version 1.2a1: Raise an exception if any of the file descriptors are invalid.

Next page: gevent.selectors – High-level IO Multiplexing

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