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Unified Diff: third_party/twisted_8_1/twisted/internet/kqreactor.py

Issue 12261012: Remove third_party/twisted_8_1 (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/tools/build
Patch Set: Created 7 years, 10 months ago
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Index: third_party/twisted_8_1/twisted/internet/kqreactor.py
diff --git a/third_party/twisted_8_1/twisted/internet/kqreactor.py b/third_party/twisted_8_1/twisted/internet/kqreactor.py
deleted file mode 100644
index 8de615c6ebffd62992c73a555310fce618ffcfc1..0000000000000000000000000000000000000000
--- a/third_party/twisted_8_1/twisted/internet/kqreactor.py
+++ /dev/null
@@ -1,232 +0,0 @@
-# Copyright (c) 2001-2007 Twisted Matrix Laboratories.
-# See LICENSE for details.
-
-
-"""
-A kqueue()/kevent() 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 kqreactor
- | kqreactor.install()
-
-This reactor only works on FreeBSD and requires PyKQueue 1.3, which is
-available at: U{http://people.freebsd.org/~dwhite/PyKQueue/}
-
-Maintainer: U{Itamar Shtull-Trauring<mailto:twisted@itamarst.org>}
-
-
-
-You're going to need to patch PyKqueue::
-
- =====================================================
- --- PyKQueue-1.3/kqsyscallmodule.c Sun Jan 28 21:59:50 2001
- +++ PyKQueue-1.3/kqsyscallmodule.c.new Tue Jul 30 18:06:08 2002
- @@ -137,7 +137,7 @@
- }
-
- statichere PyTypeObject KQEvent_Type = {
- - PyObject_HEAD_INIT(NULL)
- + PyObject_HEAD_INIT(&PyType_Type)
- 0, // ob_size
- "KQEvent", // tp_name
- sizeof(KQEventObject), // tp_basicsize
- @@ -291,13 +291,14 @@
-
- /* Build timespec for timeout */
- totimespec.tv_sec = timeout / 1000;
- - totimespec.tv_nsec = (timeout % 1000) * 100000;
- + totimespec.tv_nsec = (timeout % 1000) * 1000000;
-
- // printf("timespec: sec=%d nsec=%d\\n", totimespec.tv_sec, totimespec.tv_nsec);
-
- /* Make the call */
- -
- + Py_BEGIN_ALLOW_THREADS
- gotNumEvents = kevent (self->fd, changelist, haveNumEvents, triggered, wantNumEvents, &totimespec);
- + Py_END_ALLOW_THREADS
-
- /* Don't need the input event list anymore, so get rid of it */
- free (changelist);
- @@ -361,7 +362,7 @@
- statichere PyTypeObject KQueue_Type = {
- /* The ob_type field must be initialized in the module init function
- * to be portable to Windows without using C++. */
- - PyObject_HEAD_INIT(NULL)
- + PyObject_HEAD_INIT(&PyType_Type)
- 0, /*ob_size*/
- "KQueue", /*tp_name*/
- sizeof(KQueueObject), /*tp_basicsize*/
-
-"""
-
-import errno, sys
-
-from zope.interface import implements
-
-from kqsyscall import EVFILT_READ, EVFILT_WRITE, EV_DELETE, EV_ADD
-from kqsyscall import kqueue, kevent
-
-from twisted.internet.interfaces import IReactorFDSet
-
-from twisted.python import log, failure
-from twisted.internet import main, posixbase
-
-
-class KQueueReactor(posixbase.PosixReactorBase):
- """
- A reactor that uses kqueue(2)/kevent(2).
-
- @ivar _kq: A L{kqueue} 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{_kq} 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{_kq} for write readiness notifications which will be
- dispatched to the corresponding L{FileDescriptor} instances in
- C{_selectables}.
- """
- implements(IReactorFDSet)
-
- def __init__(self):
- """
- Initialize kqueue object, file descriptor tracking dictionaries, and the
- base class.
- """
- self._kq = kqueue()
- self._reads = {}
- self._writes = {}
- self._selectables = {}
- posixbase.PosixReactorBase.__init__(self)
-
-
- def _updateRegistration(self, *args):
- self._kq.kevent([kevent(*args)], 0, 0)
-
- 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, EVFILT_READ, EV_ADD)
-
- 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, EVFILT_WRITE, EV_ADD)
-
- def removeReader(self, reader):
- """Remove a Selectable for notification of data available to read.
- """
- fd = reader.fileno()
- if fd in self._reads:
- del self._reads[fd]
- if fd not in self._writes:
- del self._selectables[fd]
- self._updateRegistration(fd, EVFILT_READ, EV_DELETE)
-
- def removeWriter(self, writer):
- """Remove a Selectable for notification of data available to write.
- """
- fd = writer.fileno()
- if fd in self._writes:
- del self._writes[fd]
- if fd not in self._reads:
- del self._selectables[fd]
- self._updateRegistration(fd, EVFILT_WRITE, EV_DELETE)
-
- 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()
- for fd in self._reads.keys():
- self._updateRegistration(fd, EVFILT_READ, EV_DELETE)
- for fd in self._writes.keys():
- self._updateRegistration(fd, EVFILT_WRITE, EV_DELETE)
- self._reads.clear()
- self._writes.clear()
- self._selectables.clear()
- if self.waker is not None:
- self.addReader(self.waker)
- return result
-
-
- 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 doKEvent(self, timeout):
- """Poll the kqueue for new events."""
- if timeout is None:
- timeout = 1000
- else:
- timeout = int(timeout * 1000) # convert seconds to milliseconds
-
- try:
- l = self._kq.kevent([], len(self._selectables), timeout)
- except OSError, e:
- if e[0] == errno.EINTR:
- return
- else:
- raise
- _drdw = self._doWriteOrRead
- for event in l:
- why = None
- fd, filter = event.ident, event.filter
- 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, filter)
-
- def _doWriteOrRead(self, selectable, fd, filter):
- try:
- if filter == EVFILT_READ:
- why = selectable.doRead()
- if filter == EVFILT_WRITE:
- why = selectable.doWrite()
- if not selectable.fileno() == fd:
- why = main.CONNECTION_LOST
- except:
- why = sys.exc_info()[1]
- log.deferr()
-
- if why:
- self.removeReader(selectable)
- self.removeWriter(selectable)
- selectable.connectionLost(failure.Failure(why))
-
- doIteration = doKEvent
-
-
-def install():
- k = KQueueReactor()
- main.installReactor(k)
-
-
-__all__ = ["KQueueReactor", "install"]
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