Verison 1.0.3 Release

Based on Buildbotics 0.4.14

src/py/bbctrl/IOLoop.py

@@ -0,0 +1,93 @@
+################################################################################
+#                                                                              #
+#                This file is part of the Buildbotics firmware.                #
+#                                                                              #
+#                  Copyright (c) 2015 - 2018, Buildbotics LLC                  #
+#                             All rights reserved.                             #
+#                                                                              #
+#     This file ("the software") is free software: you can redistribute it     #
+#     and/or modify it under the terms of the GNU General Public License,      #
+#      version 2 as published by the Free Software Foundation. You should      #
+#      have received a copy of the GNU General Public License, version 2       #
+#     along with the software. If not, see <http://www.gnu.org/licenses/>.     #
+#                                                                              #
+#     The software is distributed in the hope that it will be useful, but      #
+#          WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU       #
+#               Lesser General Public License for more details.                #
+#                                                                              #
+#       You should have received a copy of the GNU Lesser General Public       #
+#                License along with the software.  If not, see                 #
+#                       <http://www.gnu.org/licenses/>.                        #
+#                                                                              #
+#                For information regarding this software email:                #
+#                  "Joseph Coffland" <joseph@buildbotics.com>                  #
+#                                                                              #
+################################################################################
+
+import tornado.ioloop
+import bbctrl
+
+
+class CB(object):
+    def __init__(self, ioloop, delay, cb, *args, **kwargs):
+        self.ioloop = ioloop
+        self.cb = cb
+
+        io = ioloop.ioloop
+        self.h = io.call_later(delay, self._cb, *args, **kwargs)
+
+        ioloop.callbacks[self.h] = self
+
+    def _cb(self, *args, **kwarg):
+        del self.ioloop.callbacks[self.h]
+        return self.cb(*args, **kwarg)
+
+
+class IOLoop(object):
+    READ = tornado.ioloop.IOLoop.READ
+    WRITE = tornado.ioloop.IOLoop.WRITE
+    ERROR = tornado.ioloop.IOLoop.ERROR
+
+
+    def __init__(self, ioloop):
+        self.ioloop = ioloop
+        self.fds = set()
+        self.handles = set()
+        self.callbacks = {}
+
+
+    def close(self):
+        for fd in list(self.fds): self.ioloop.remove_handler(fd)
+        for h in list(self.handles): self.ioloop.remove_timeout(h)
+        for h in list(self.callbacks): self.ioloop.remove_timeout(h)
+
+
+    def add_handler(self, fd, handler, events):
+        self.ioloop.add_handler(fd, handler, events)
+        if hasattr(fd, 'fileno'): fd = fd.fileno()
+        self.fds.add(fd)
+
+
+    def remove_handler(self, h):
+        self.ioloop.remove_handler(h)
+        if hasattr(h, 'fileno'): h = h.fileno()
+        self.fds.remove(h)
+
+
+    def update_handler(self, fd, events): self.ioloop.update_handler(fd, events)
+
+
+    def call_later(self, delay, callback, *args, **kwargs):
+        cb = CB(self, delay, callback, *args, **kwargs)
+        return cb.h
+
+
+    def remove_timeout(self, h):
+        self.ioloop.remove_timeout(h)
+        if h in self.handles: self.handles.remove(h)
+        if h in self.callbacks: del self.callbacks[h]
+
+
+    def add_callback(self, cb, *args, **kwargs):
+        self.ioloop.add_callback(cb, *args, **kwargs)