128 lines
3.8 KiB
Python
128 lines
3.8 KiB
Python
# ex:ts=4:sw=4:sts=4:et
|
|
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
|
|
#
|
|
# Copyright (C) 2006 - 2007 Michael 'Mickey' Lauer
|
|
# Copyright (C) 2006 - 2007 Richard Purdie
|
|
#
|
|
# This program 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.
|
|
#
|
|
# This program 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 General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along
|
|
# with this program; if not, write to the Free Software Foundation, Inc.,
|
|
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
|
|
"""
|
|
Use this class to fork off a thread to recieve event callbacks from the bitbake
|
|
server and queue them for the UI to process. This process must be used to avoid
|
|
client/server deadlocks.
|
|
"""
|
|
|
|
import socket, threading, pickle
|
|
from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler
|
|
|
|
class BBUIEventQueue:
|
|
def __init__(self, BBServer):
|
|
|
|
self.eventQueue = []
|
|
self.eventQueueLock = threading.Lock()
|
|
self.eventQueueNotify = threading.Event()
|
|
|
|
self.BBServer = BBServer
|
|
|
|
self.t = threading.Thread()
|
|
self.t.setDaemon(True)
|
|
self.t.run = self.startCallbackHandler
|
|
self.t.start()
|
|
|
|
def getEvent(self):
|
|
|
|
self.eventQueueLock.acquire()
|
|
|
|
if len(self.eventQueue) == 0:
|
|
self.eventQueueLock.release()
|
|
return None
|
|
|
|
item = self.eventQueue.pop(0)
|
|
|
|
if len(self.eventQueue) == 0:
|
|
self.eventQueueNotify.clear()
|
|
|
|
self.eventQueueLock.release()
|
|
return item
|
|
|
|
def waitEvent(self, delay):
|
|
self.eventQueueNotify.wait(delay)
|
|
return self.getEvent()
|
|
|
|
def queue_event(self, event):
|
|
self.eventQueueLock.acquire()
|
|
self.eventQueue.append(event)
|
|
self.eventQueueNotify.set()
|
|
self.eventQueueLock.release()
|
|
|
|
def send_event(self, event):
|
|
self.queue_event(pickle.loads(event))
|
|
|
|
def startCallbackHandler(self):
|
|
|
|
server = UIXMLRPCServer()
|
|
self.host, self.port = server.socket.getsockname()
|
|
|
|
server.register_function( self.system_quit, "event.quit" )
|
|
server.register_function( self.send_event, "event.sendpickle" )
|
|
server.socket.settimeout(1)
|
|
|
|
self.EventHandle = self.BBServer.registerEventHandler(self.host, self.port)
|
|
|
|
self.server = server
|
|
while not server.quit:
|
|
server.handle_request()
|
|
server.server_close()
|
|
|
|
def system_quit( self ):
|
|
"""
|
|
Shut down the callback thread
|
|
"""
|
|
try:
|
|
self.BBServer.unregisterEventHandler(self.EventHandle)
|
|
except:
|
|
pass
|
|
self.server.quit = True
|
|
|
|
class UIXMLRPCServer (SimpleXMLRPCServer):
|
|
|
|
def __init__( self, interface = ("localhost", 0) ):
|
|
self.quit = False
|
|
SimpleXMLRPCServer.__init__( self,
|
|
interface,
|
|
requestHandler=SimpleXMLRPCRequestHandler,
|
|
logRequests=False, allow_none=True)
|
|
|
|
def get_request(self):
|
|
while not self.quit:
|
|
try:
|
|
sock, addr = self.socket.accept()
|
|
sock.settimeout(1)
|
|
return (sock, addr)
|
|
except socket.timeout:
|
|
pass
|
|
return (None, None)
|
|
|
|
def close_request(self, request):
|
|
if request is None:
|
|
return
|
|
SimpleXMLRPCServer.close_request(self, request)
|
|
|
|
def process_request(self, request, client_address):
|
|
if request is None:
|
|
return
|
|
SimpleXMLRPCServer.process_request(self, request, client_address)
|
|
|