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authorJulien Valroff <julien@kirya.net>2011-03-25 22:07:00 +0100
committerJulien Valroff <julien@kirya.net>2011-03-25 22:07:00 +0100
commit6866d4a5b74779f087b8e44148a49163d8b7327b (patch)
treea2eae1ea3b49bc12aebb8b5be6286d291cf590b6 /rapid/idletube.py
parent2a910aa02d2e0c157572818520781e2e16889923 (diff)
Imported Upstream version 0.4.0~alpha1upstream/0.4.0_alpha1
Diffstat (limited to 'rapid/idletube.py')
-rw-r--r--rapid/idletube.py205
1 files changed, 0 insertions, 205 deletions
diff --git a/rapid/idletube.py b/rapid/idletube.py
deleted file mode 100644
index 0b07536..0000000
--- a/rapid/idletube.py
+++ /dev/null
@@ -1,205 +0,0 @@
-
-# Copyright (c) 2005 Antoon Pardon
-#
-# Modified 2010 by Damon Lynch to use python's higher performance deque, rather than a regular list
-#
-# Permission is hereby granted, free of charge, to any person obtaining a
-# copy of this software and associated documentation files (the "Software"),
-# to deal in the Software without restriction, including without limitation
-# the rights to use, copy, modify, merge, publish, distribute, sublicense,
-# and/or sell copies of the Software, and to permit persons to whom the
-# Software is furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-
-import collections
-from Queue import Queue
-
-from threading import Lock
-from thread import get_ident
-
-from types import BooleanType as UnConnected
-
-UnRegistered, Registered = False, True
-
-
-class EOInformation(Exception):
- pass
-
-class TubeAccess(Exception):
- pass
-
-
-class Fifo:
-
- def __init__(self):
- self.fifo = collections.deque()
-
- def put(self, item):
- self.fifo.append(item)
-
- def get(self):
- return self.fifo.popleft()
-
- def size(self):
- return len(self.fifo)
-
-
-class Tube:
-
- def __init__(self, maxsize, lck = Lock, container = None):
- if container is None:
- container = Fifo()
- self.readers = set()
- self.writers = set()
- self.container = container
- self.maxsize = maxsize
- self.cb_arglst = []
- self.cb_src = UnRegistered
- self.in_use = Lock()
- self.nowriter = lck()
- self.full = lck()
- self.empty = lck()
- self.empty.acquire()
- self.nowriter.acquire()
-
- def open(self, access = 'r', *to):
- thrd = get_ident()
- access = access.lower()
- self.in_use.acquire()
- if 'w' in access:
- if len(self.writers) == 0:
- for _ in self.readers:
- self.nowriter.release()
- self.writers.add(thrd)
- if 'r' in access:
- self.readers.add(thrd)
- if len(self.writers) == 0:
- self.in_use.release()
- self.nowriter.acquire(*to)
- else:
- self.in_use.release()
- else:
- self.in_use.release()
-
- def close(self, access = 'rw'):
- thrd = get_ident()
- access = access.lower()
- self.in_use.acquire()
- if 'r' in access:
- self.readers.discard(thrd)
- if 'w' in access:
- self.writers.discard(thrd)
- if len(self.writers) == 0:
- if self.container.size() == 0:
- self.empty.release()
- if self.cb_src is Registered and len(self.readers) > 0:
- self.cb_src = gob.idle_add(self._idle_callback)
- for _ in self.readers:
- self.container.put(EOInformation)
- self.in_use.release()
-
- def size(self):
- self.in_use.acquire()
- size = self.container.size()
- self.in_use.release()
- return size
-
- def get(self, *to):
- thrd = get_ident()
- if thrd not in self.readers:
- raise TubeAccess, "Thread has no read access for tube"
- self.empty.acquire(*to)
- self.in_use.acquire()
- size = self.container.size()
- if size == self.maxsize:
- self.full.release()
- item = self.container.get()
- if size != 1:
- self.empty.release()
- elif type(self.cb_src) is not UnConnected:
- gob.source_remove(self.cb_src)
- self.cb_src = Registered
- self.in_use.release()
- if item is EOInformation:
- raise EOInformation
- else:
- return item
-
- def put(self, item, *to):
- thrd = get_ident()
- if thrd not in self.writers:
- raise TubeAccess, "Thread has no write access for tube"
- if thrd in self.readers:
- self._put_rw(item)
- else:
- self._put_wo(item, *to)
-
- def _put_wo(self, item, *to):
- self.full.acquire(*to)
- self.in_use.acquire()
- size = self.container.size()
- if size == 0:
- self.empty.release()
- if self.cb_src is Registered:
- self.cb_src = gob.idle_add(self._idle_callback)
- self.container.put(item)
- if size + 1 < self.maxsize:
- self.full.release()
- self.in_use.release()
-
- def _put_rw(self, item):
- self.in_use.acquire()
- size = self.container.size()
- if size == 0:
- self.empty.release()
- if self.cb_src is Registered:
- self.cb_src = gob.idle_add(self._idle_callback)
- self.container.put(item)
- self.in_use.release()
-
- def _idle_callback(self):
- self.in_use.acquire()
- lst = self.cb_arglst.pop(0)
- self.in_use.release()
- func = lst[0]
- lst[0] = self
- ret_val = func(*lst)
- self.in_use.acquire()
- if ret_val:
- lst[0] = func
- self.cb_arglst.append(lst)
- elif self.cb_arglst == []:
- self.cb_src = UnRegistered
- self.in_use.release()
- return self.cb_src is not UnRegistered
-
-
-def tube_add_watch(tube, callback, *args):
-
- global gob
- import gobject as gob
-
- tube.in_use.acquire()
- tube.cb_arglst.append([callback] + list(args))
- if tube.cb_src is UnRegistered:
- if tube.container.size() == 0:
- tube.cb_src = Registered
- else:
- tube.cb_src = gob.idle_add(tube._idle_callback)
- tube.in_use.release()
-
-def tube_remove_watch(tube):
-## tube.in_use.acquire()
-## gob.source_remove(tube.cb_src)
-## tube._idle_callback.handler_block(tube.cb_src)
- pass