Statistics
| Branch: | Revision:

urtware / doc / activitydiagrams / subscriber / functions.iuml @ dd31cb03

History | View | Annotate | Download (2.24 KB)

1 e87bd7c7 Thomas Schöpping
/'
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
/' Fetch a message and update/copy all data. '/
23
!function $fetch_message()
24
  partition "fetch message" {
25
    fork
26
      :update message pointer;
27
    fork again
28 dd31cb03 Thomas Schöpping
      :copy message origin time;
29 e87bd7c7 Thomas Schöpping
    fork again
30
      :copy message payload;
31
    endfork
32
  }
33
!endfunction
34
35
/' Find the latest message in the circular message buffer. '/
36
!function $find_latest_message()
37
  partition "find latest message" {
38 dd31cb03 Thomas Schöpping
    :access ""lastMessage"";
39 e87bd7c7 Thomas Schöpping
    while (Timestamp of next message is younger?) is (yes)
40 dd31cb03 Thomas Schöpping
      fork
41
        :proceed to next message;
42
        #EEEEEE:..//URT_CFG_PUBSUB_PROFILING == true//..\ndecrement counter of consumers left (@message);
43
      fork again
44
        #EEEEEE:..//URT_CFG_PUBSUB_PROFILING == true//..\nincrement counter of received messages;
45
      endfork
46 e87bd7c7 Thomas Schöpping
    endwhile (no)
47
  }
48
!endfunction
49
50
/' Find the oldest message in the circular message buffer. '/
51
!function $find_oldest_message()
52
  partition "find oldest valid message" {
53
    if (Timestamp of last read message euqals local copy?) then (yes)
54
    else (no)
55
      while (Timestamp of next message is younger?) is (yes)
56 dd31cb03 Thomas Schöpping
        #EEEEEE:..//URT_CFG_PUBSUB_PROFILING == true//..\ndecrement counter of consumers left (@message);
57 e87bd7c7 Thomas Schöpping
        :proceed to next message;
58
      endwhile (no)
59
    endif
60 dd31cb03 Thomas Schöpping
    #EEEEEE:..//URT_CFG_PUBSUB_PROFILING == true//..\ndecrement counter of consumers left (@message);
61 e87bd7c7 Thomas Schöpping
    :proceed to next message;
62
  }
63
!endfunction