commit c22d21adf8eb95fd23d41cc425b97ccb69d2232a
Author: Thomas Schöpping <tschoepp@cit-ec.uni-bielefeld.de>
Date:   Fri Feb 21 17:07:24 2020 +0100

    documentation: removed mutex lock from message structure (was redundantly used with topic lock)

diff --git a/doc/activitydiagrams/subscriber/urtSubscriberUnsubscribe.svg b/doc/activitydiagrams/subscriber/urtSubscriberUnsubscribe.svg
index c2fc489..74b456a 100644
--- a/doc/activitydiagrams/subscriber/urtSubscriberUnsubscribe.svg
+++ b/doc/activitydiagrams/subscriber/urtSubscriberUnsubscribe.svg
@@ -1,4 +1,4 @@
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stroke-width: 1.0;"/><path d="M1261.75,72.8594 L1261.75,82.8594 L1271.75,82.8594 L1261.75,72.8594 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1002.75" x2="1013.25" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="1017.25" y="89.4263"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="80" x="1017.25" y="89.4263">subscriber</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="152" x="1105.25" y="89.4263">: urt_subscriber_t*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="1261.25" y="89.4263"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="1261.25" x2="1271.75" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="223" x="1008.75" y="105.0591">The subscriber to be unsubscribed.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="76" x="1008.75" y="120.1919">Must not be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="1088.75" y="120.1919">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="4" x="1120.75" y="120.1919">.</text><ellipse cx="1301.75" cy="100.5586" fill="#000000" filter="url(#f12r66ntz96gh2)" rx="10" ry="10" style="stroke: none; 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 @startuml
 
 title **µRtWare**\nurtSubscriberUnsubscribe()\n
@@ -38,9 +38,7 @@ if (Associated to a topic?) then (yes)
       endif
     fork again
       while (Unfetched messages left?) is (yes)
-        :lock message;
         :decrement HRT counter;
-        :unlock message;
       endwhile (no)
       if (At least one HRT counter became 0?) then (yes)
         :signal topic's condition variable;
