Statistics
| Branch: | Revision:

urtware / doc / activitydiagrams / subscriber / srtsubscriber / urtSrtSubscriberUnsubscribe.uml @ dd31cb03

History | View | Annotate | Download (2.167 KB)

1
/'
2
µRtWare is a lightweight publish/subscribe middleware for real-time
3
applications. It was developed as part of the software habitat for the
4
Autonomous Mini Robot [1] (AMiRo) but can be used for other purposes as well.
5

    
6
Copyright (C) 2018..2020  Thomas Schöpping et al.
7

    
8
This program is free software: you can redistribute it and/or modify
9
it under the terms of the GNU General Public License as published by
10
the Free Software Foundation, either version 3 of the License, or
11
(at your option) any later version.
12

    
13
This program is distributed in the hope that it will be useful,
14
but WITHOUT ANY WARRANTY; without even the implied warranty of
15
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
GNU General Public License for more details.
17

    
18
You should have received a copy of the GNU General Public License
19
along with this program.  If not, see <http://www.gnu.org/licenses/>.
20
'/
21

    
22
/'### INTRO ##################################################################'/
23

    
24
@startuml
25

    
26
title **µRtWare**\nurtSrtSubscriberUnsubscribe()\n
27

    
28
/'### PARAMETERS & RETURN ####################################################'/
29

    
30
note
31
  -- **subscriber** : urt_srtsubscriber_t* --
32
  The SRT subscriber to be unsubscribed.
33
  Must not be ""NULL"".
34
  ====
35
  -- **return** : urt_status_t --
36
  Returns ""URT_STATUS_OK"" on sucess.
37
  Returns ""URT_STATUS_UNSUBSCRIBE_NOTOPIC"" if the subscriber is not associated to a topic.
38
endnote
39

    
40
/'### PROCEDURE ##############################################################'/
41

    
42
start
43
if (Associated to a topic?) then (yes)
44
  #EEEEEE:..//URT_CFG_PUBSUB_PROFILING == true//..\nlock topic;
45
  fork
46
    :unregister event;
47
  fork again
48
    #EEEEEE:..//URT_CFG_PUBSUB_PROFILING == true//..\ndecrement counter of subscribers (@topic);
49
  endfork
50
  #EEEEEE:..//URT_CFG_PUBSUB_PROFILING == true//..\nunlock topic;
51
  :reset members;
52
  note
53
    -- urt_basesubscriber_t --
54
    * **topic** ← ""NULL""
55
    * **lastMessage** ← ""NULL""
56
    * **lastMessageTime** ← 0
57
  endnote
58
  stop
59
  note
60
    Returns ""URT_STATUS_OK"".
61
  endnote
62
else (no)
63
  stop
64
  note
65
    Returns ""URT_STATUS_UNSUBSCRIBE_NOTOPIC"".
66
  endnote
67
endif
68

    
69
/'### OUTRO ##################################################################'/
70

    
71
@enduml