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author | Adrian Dudau <adrian.dudau@enea.com> | 2013-12-12 13:38:32 +0100 |
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committer | Adrian Dudau <adrian.dudau@enea.com> | 2013-12-12 13:50:20 +0100 |
commit | e2e6f6fe07049f33cb6348780fa975162752e421 (patch) | |
tree | b1813295411235d1297a0ed642b1346b24fdfb12 /bitbake/lib/bb/ui/uievent.py | |
download | poky-e2e6f6fe07049f33cb6348780fa975162752e421.tar.gz |
initial commit of Enea Linux 3.1
Migrated from the internal git server on the dora-enea branch
Signed-off-by: Adrian Dudau <adrian.dudau@enea.com>
Diffstat (limited to 'bitbake/lib/bb/ui/uievent.py')
-rw-r--r-- | bitbake/lib/bb/ui/uievent.py | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/bitbake/lib/bb/ui/uievent.py b/bitbake/lib/bb/ui/uievent.py new file mode 100644 index 0000000000..2133b44477 --- /dev/null +++ b/bitbake/lib/bb/ui/uievent.py | |||
@@ -0,0 +1,133 @@ | |||
1 | # ex:ts=4:sw=4:sts=4:et | ||
2 | # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- | ||
3 | # | ||
4 | # Copyright (C) 2006 - 2007 Michael 'Mickey' Lauer | ||
5 | # Copyright (C) 2006 - 2007 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 | """ | ||
22 | Use this class to fork off a thread to recieve event callbacks from the bitbake | ||
23 | server and queue them for the UI to process. This process must be used to avoid | ||
24 | client/server deadlocks. | ||
25 | """ | ||
26 | |||
27 | import socket, threading, pickle | ||
28 | from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler | ||
29 | |||
30 | class BBUIEventQueue: | ||
31 | def __init__(self, BBServer, clientinfo=("localhost, 0"), featureset=[]): | ||
32 | |||
33 | self.eventQueue = [] | ||
34 | self.eventQueueLock = threading.Lock() | ||
35 | self.eventQueueNotify = threading.Event() | ||
36 | |||
37 | self.BBServer = BBServer | ||
38 | self.clientinfo = clientinfo | ||
39 | |||
40 | server = UIXMLRPCServer(self.clientinfo) | ||
41 | self.host, self.port = server.socket.getsockname() | ||
42 | |||
43 | server.register_function( self.system_quit, "event.quit" ) | ||
44 | server.register_function( self.send_event, "event.sendpickle" ) | ||
45 | server.socket.settimeout(1) | ||
46 | |||
47 | self.EventHandle = self.BBServer.registerEventHandler(self.host, self.port, featureset) | ||
48 | |||
49 | if (self.EventHandle == None): | ||
50 | bb.fatal("Could not register UI event handler") | ||
51 | |||
52 | self.server = server | ||
53 | |||
54 | self.t = threading.Thread() | ||
55 | self.t.setDaemon(True) | ||
56 | self.t.run = self.startCallbackHandler | ||
57 | self.t.start() | ||
58 | |||
59 | def getEvent(self): | ||
60 | |||
61 | self.eventQueueLock.acquire() | ||
62 | |||
63 | if len(self.eventQueue) == 0: | ||
64 | self.eventQueueLock.release() | ||
65 | return None | ||
66 | |||
67 | item = self.eventQueue.pop(0) | ||
68 | |||
69 | if len(self.eventQueue) == 0: | ||
70 | self.eventQueueNotify.clear() | ||
71 | |||
72 | self.eventQueueLock.release() | ||
73 | return item | ||
74 | |||
75 | def waitEvent(self, delay): | ||
76 | self.eventQueueNotify.wait(delay) | ||
77 | return self.getEvent() | ||
78 | |||
79 | def queue_event(self, event): | ||
80 | self.eventQueueLock.acquire() | ||
81 | self.eventQueue.append(event) | ||
82 | self.eventQueueNotify.set() | ||
83 | self.eventQueueLock.release() | ||
84 | |||
85 | def send_event(self, event): | ||
86 | self.queue_event(pickle.loads(event)) | ||
87 | |||
88 | def startCallbackHandler(self): | ||
89 | |||
90 | self.server.timeout = 1 | ||
91 | while not self.server.quit: | ||
92 | self.server.handle_request() | ||
93 | self.server.server_close() | ||
94 | |||
95 | def system_quit( self ): | ||
96 | """ | ||
97 | Shut down the callback thread | ||
98 | """ | ||
99 | try: | ||
100 | self.BBServer.unregisterEventHandler(self.EventHandle) | ||
101 | except: | ||
102 | pass | ||
103 | self.server.quit = True | ||
104 | |||
105 | class UIXMLRPCServer (SimpleXMLRPCServer): | ||
106 | |||
107 | def __init__( self, interface ): | ||
108 | self.quit = False | ||
109 | SimpleXMLRPCServer.__init__( self, | ||
110 | interface, | ||
111 | requestHandler=SimpleXMLRPCRequestHandler, | ||
112 | logRequests=False, allow_none=True) | ||
113 | |||
114 | def get_request(self): | ||
115 | while not self.quit: | ||
116 | try: | ||
117 | sock, addr = self.socket.accept() | ||
118 | sock.settimeout(1) | ||
119 | return (sock, addr) | ||
120 | except socket.timeout: | ||
121 | pass | ||
122 | return (None, None) | ||
123 | |||
124 | def close_request(self, request): | ||
125 | if request is None: | ||
126 | return | ||
127 | SimpleXMLRPCServer.close_request(self, request) | ||
128 | |||
129 | def process_request(self, request, client_address): | ||
130 | if request is None: | ||
131 | return | ||
132 | SimpleXMLRPCServer.process_request(self, request, client_address) | ||
133 | |||