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authorRichard Purdie <richard.purdie@linuxfoundation.org>2013-05-28 14:28:30 +0100
committerRichard Purdie <richard.purdie@linuxfoundation.org>2013-05-30 09:54:34 +0100
commite118ee3ad85cc6e7977bbd6f5a5bd6fe57aef04e (patch)
tree9203ace51a6d0a794b0578029de01695c16558c8 /bitbake/lib/bb
parent5cb59cc6910d8f3165528c4a71e29e4de897d242 (diff)
downloadpoky-e118ee3ad85cc6e7977bbd6f5a5bd6fe57aef04e.tar.gz
bitbake: server: Remove none server
The process server backend has been serving well as the default for a long time now and the UI model is much better thought out that it used to be. With the move to make bitbake a memory resident process, the none server is now looking rather pointless and complicates the code needlessly. Lets therefore now remove it. (Bitbake rev: 9af03a89605e3db9bce3cea1e0f2d0b6cfaa6fe1) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bitbake/lib/bb')
-rw-r--r--bitbake/lib/bb/server/none.py203
1 files changed, 0 insertions, 203 deletions
diff --git a/bitbake/lib/bb/server/none.py b/bitbake/lib/bb/server/none.py
deleted file mode 100644
index f5fd4d4f7b..0000000000
--- a/bitbake/lib/bb/server/none.py
+++ /dev/null
@@ -1,203 +0,0 @@
1#
2# BitBake 'dummy' Passthrough Server
3#
4# Copyright (C) 2006 - 2007 Michael 'Mickey' Lauer
5# Copyright (C) 2006 - 2008 Richard Purdie
6#
7# This program is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License version 2 as
9# published by the Free Software Foundation.
10#
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14# GNU General Public License for more details.
15#
16# You should have received a copy of the GNU General Public License along
17# with this program; if not, write to the Free Software Foundation, Inc.,
18# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19
20"""
21 This module implements a passthrough server for BitBake.
22
23 Use register_idle_function() to add a function which the server
24 calls from within idle_commands when no requests are pending. Make sure
25 that those functions are non-blocking or else you will introduce latency
26 in the server's main loop.
27"""
28
29import time
30import bb
31import signal
32
33DEBUG = False
34
35import inspect, select
36
37class BitBakeServerCommands():
38 def __init__(self, server):
39 self.server = server
40
41 def runCommand(self, command):
42 """
43 Run a cooker command on the server
44 """
45 #print "Running Command %s" % command
46 return self.cooker.command.runCommand(command)
47
48 def terminateServer(self):
49 """
50 Trigger the server to quit
51 """
52 self.server.server_exit()
53 #print "Server (cooker) exitting"
54 return
55
56 def ping(self):
57 """
58 Dummy method which can be used to check the server is still alive
59 """
60 return True
61
62eventQueue = []
63
64class BBUIEventQueue:
65 class event:
66 def __init__(self, parent):
67 self.parent = parent
68 @staticmethod
69 def send(event):
70 bb.server.none.eventQueue.append(event)
71 @staticmethod
72 def quit():
73 return
74
75 def __init__(self, BBServer):
76 self.eventQueue = bb.server.none.eventQueue
77 self.BBServer = BBServer
78 self.EventHandle = bb.event.register_UIHhandler(self)
79
80 def __popEvent(self):
81 if len(self.eventQueue) == 0:
82 return None
83 return self.eventQueue.pop(0)
84
85 def getEvent(self):
86 if len(self.eventQueue) == 0:
87 self.BBServer.idle_commands(0)
88 return self.__popEvent()
89
90 def waitEvent(self, delay):
91 event = self.__popEvent()
92 if event:
93 return event
94 self.BBServer.idle_commands(delay)
95 return self.__popEvent()
96
97 def queue_event(self, event):
98 self.eventQueue.append(event)
99
100 def system_quit( self ):
101 bb.event.unregister_UIHhandler(self.EventHandle)
102
103# Dummy signal handler to ensure we break out of sleep upon SIGCHLD
104def chldhandler(signum, stackframe):
105 pass
106
107class BitBakeNoneServer():
108 # remove this when you're done with debugging
109 # allow_reuse_address = True
110
111 def __init__(self):
112 self._idlefuns = {}
113 self.commands = BitBakeServerCommands(self)
114
115 def addcooker(self, cooker):
116 self.cooker = cooker
117 self.commands.cooker = cooker
118
119 def register_idle_function(self, function, data):
120 """Register a function to be called while the server is idle"""
121 assert hasattr(function, '__call__')
122 self._idlefuns[function] = data
123
124 def idle_commands(self, delay):
125 #print "Idle queue length %s" % len(self._idlefuns)
126 #print "Idle timeout, running idle functions"
127 #if len(self._idlefuns) == 0:
128 nextsleep = delay
129 for function, data in self._idlefuns.items():
130 try:
131 retval = function(self, data, False)
132 #print "Idle function returned %s" % (retval)
133 if retval is False:
134 del self._idlefuns[function]
135 elif retval is True:
136 nextsleep = None
137 elif nextsleep is None:
138 continue
139 elif retval < nextsleep:
140 nextsleep = retval
141 except SystemExit:
142 raise
143 except:
144 import traceback
145 traceback.print_exc()
146 self.commands.runCommand(["stateShutdown"])
147 pass
148 if nextsleep is not None:
149 #print "Sleeping for %s (%s)" % (nextsleep, delay)
150 signal.signal(signal.SIGCHLD, chldhandler)
151 time.sleep(nextsleep)
152 signal.signal(signal.SIGCHLD, signal.SIG_DFL)
153
154 def server_exit(self):
155 # Tell idle functions we're exiting
156 for function, data in self._idlefuns.items():
157 try:
158 retval = function(self, data, True)
159 except:
160 pass
161
162class BitBakeServerConnection():
163 def __init__(self, server):
164 self.server = server.server
165 self.connection = self.server.commands
166 self.events = bb.server.none.BBUIEventQueue(self.server)
167 for event in bb.event.ui_queue:
168 self.events.queue_event(event)
169
170 def terminate(self):
171 try:
172 self.events.system_quit()
173 except:
174 pass
175 try:
176 self.connection.terminateServer()
177 except:
178 pass
179
180class BitBakeServer(object):
181 def initServer(self):
182 self.server = BitBakeNoneServer()
183
184 def addcooker(self, cooker):
185 self.cooker = cooker
186 self.server.addcooker(cooker)
187
188 def getServerIdleCB(self):
189 return self.server.register_idle_function
190
191 def saveConnectionDetails(self):
192 return
193
194 def detach(self):
195 return
196
197 def establishConnection(self):
198 self.connection = BitBakeServerConnection(self)
199 return self.connection
200
201 def launchUI(self, uifunc, *args):
202 return bb.cooker.server_main(self.cooker, uifunc, *args)
203