Remove third_party/twisted_8_1

third_party/twisted_8_1/twisted/internet/pollreactor.py

Index: third_party/twisted_8_1/twisted/internet/pollreactor.py
diff --git a/third_party/twisted_8_1/twisted/internet/pollreactor.py b/third_party/twisted_8_1/twisted/internet/pollreactor.py
deleted file mode 100644
index 353e0061a19050bec35f2111f8cf50d5417dd8fa..0000000000000000000000000000000000000000
--- a/third_party/twisted_8_1/twisted/internet/pollreactor.py
+++ /dev/null
@@ -1,217 +0,0 @@
-# Copyright (c) 2001-2007 Twisted Matrix Laboratories.
-# See LICENSE for details.
-
-
-"""
-A poll() based implementation of the twisted main loop.
-
-To install the event loop (and you should do this before any connections,
-listeners or connectors are added)::
-
-    from twisted.internet import pollreactor
-    pollreactor.install()
-
-Maintainer: U{Itamar Shtull-Trauring<mailto:twisted@itamarst.org>}
-"""
-
-# System imports
-import errno, sys
-from select import error as SelectError, poll
-from select import POLLIN, POLLOUT, POLLHUP, POLLERR, POLLNVAL
-
-from zope.interface import implements
-
-# Twisted imports
-from twisted.python import log
-from twisted.internet import main, posixbase, error
-from twisted.internet.interfaces import IReactorFDSet
-
-POLL_DISCONNECTED = (POLLHUP | POLLERR | POLLNVAL)
-
-
-class PollReactor(posixbase.PosixReactorBase):
-    """
-    A reactor that uses poll(2).
-
-    @ivar _poller: A L{poll} which will be used to check for I/O
-        readiness.
-
-    @ivar _selectables: A dictionary mapping integer file descriptors to
-        instances of L{FileDescriptor} which have been registered with the
-        reactor.  All L{FileDescriptors} which are currently receiving read or
-        write readiness notifications will be present as values in this
-        dictionary.
-
-    @ivar _reads: A dictionary mapping integer file descriptors to arbitrary
-        values (this is essentially a set).  Keys in this dictionary will be
-        registered with C{_poller} for read readiness notifications which will
-        be dispatched to the corresponding L{FileDescriptor} instances in
-        C{_selectables}.
-
-    @ivar _writes: A dictionary mapping integer file descriptors to arbitrary
-        values (this is essentially a set).  Keys in this dictionary will be
-        registered with C{_poller} for write readiness notifications which will
-        be dispatched to the corresponding L{FileDescriptor} instances in
-        C{_selectables}.
-    """
-    implements(IReactorFDSet)
-
-    def __init__(self):
-        """
-        Initialize polling object, file descriptor tracking dictionaries, and
-        the base class.
-        """
-        self._poller = poll()
-        self._selectables = {}
-        self._reads = {}
-        self._writes = {}
-        posixbase.PosixReactorBase.__init__(self)
-
-
-    def _updateRegistration(self, fd):
-        """Register/unregister an fd with the poller."""
-        try:
-            self._poller.unregister(fd)
-        except KeyError:
-            pass
-
-        mask = 0
-        if fd in self._reads:
-            mask = mask | POLLIN
-        if fd in self._writes:
-            mask = mask | POLLOUT
-        if mask != 0:
-            self._poller.register(fd, mask)
-        else:
-            if fd in self._selectables:
-                del self._selectables[fd]
-
-    def _dictRemove(self, selectable, mdict):
-        try:
-            # the easy way
-            fd = selectable.fileno()
-            # make sure the fd is actually real.  In some situations we can get
-            # -1 here.
-            mdict[fd]
-        except:
-            # the hard way: necessary because fileno() may disappear at any
-            # moment, thanks to python's underlying sockets impl
-            for fd, fdes in self._selectables.items():
-                if selectable is fdes:
-                    break
-            else:
-                # Hmm, maybe not the right course of action?  This method can't
-                # fail, because it happens inside error detection...
-                return
-        if fd in mdict:
-            del mdict[fd]
-            self._updateRegistration(fd)
-
-    def addReader(self, reader):
-        """Add a FileDescriptor for notification of data available to read.
-        """
-        fd = reader.fileno()
-        if fd not in self._reads:
-            self._selectables[fd] = reader
-            self._reads[fd] =  1
-            self._updateRegistration(fd)
-
-    def addWriter(self, writer):
-        """Add a FileDescriptor for notification of data available to write.
-        """
-        fd = writer.fileno()
-        if fd not in self._writes:
-            self._selectables[fd] = writer
-            self._writes[fd] =  1
-            self._updateRegistration(fd)
-
-    def removeReader(self, reader):
-        """Remove a Selectable for notification of data available to read.
-        """
-        return self._dictRemove(reader, self._reads)
-
-    def removeWriter(self, writer):
-        """Remove a Selectable for notification of data available to write.
-        """
-        return self._dictRemove(writer, self._writes)
-
-    def removeAll(self):
-        """Remove all selectables, and return a list of them."""
-        if self.waker is not None:
-            self.removeReader(self.waker)
-        result = self._selectables.values()
-        fds = self._selectables.keys()
-        self._reads.clear()
-        self._writes.clear()
-        self._selectables.clear()
-        for fd in fds:
-            self._poller.unregister(fd)
-
-        if self.waker is not None:
-            self.addReader(self.waker)
-        return result
-
-    def doPoll(self, timeout):
-        """Poll the poller for new events."""
-        if timeout is not None:
-            timeout = int(timeout * 1000) # convert seconds to milliseconds
-
-        try:
-            l = self._poller.poll(timeout)
-        except SelectError, e:
-            if e[0] == errno.EINTR:
-                return
-            else:
-                raise
-        _drdw = self._doReadOrWrite
-        for fd, event in l:
-            try:
-                selectable = self._selectables[fd]
-            except KeyError:
-                # Handles the infrequent case where one selectable's
-                # handler disconnects another.
-                continue
-            log.callWithLogger(selectable, _drdw, selectable, fd, event)
-
-    doIteration = doPoll
-
-    def _doReadOrWrite(self, selectable, fd, event):
-        why = None
-        inRead = False
-        if event & POLL_DISCONNECTED and not (event & POLLIN):
-            why = main.CONNECTION_LOST
-        else:
-            try:
-                if event & POLLIN:
-                    why = selectable.doRead()
-                    inRead = True
-                if not why and event & POLLOUT:
-                    why = selectable.doWrite()
-                    inRead = False
-                if not selectable.fileno() == fd:
-                    why = error.ConnectionFdescWentAway('Filedescriptor went away')
-                    inRead = False
-            except:
-                log.deferr()
-                why = sys.exc_info()[1]
-        if why:
-            self._disconnectSelectable(selectable, why, inRead)
-
-
-    def getReaders(self):
-        return [self._selectables[fd] for fd in self._reads]
-
-
-    def getWriters(self):
-        return [self._selectables[fd] for fd in self._writes]
-
-
-
-def install():
-    """Install the poll() reactor."""
-    p = PollReactor()
-    from twisted.internet.main import installReactor
-    installReactor(p)
-
-
-__all__ = ["PollReactor", "install"]