AMiRo-OS

<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="1255px" preserveAspectRatio="none" style="width:2678px;height:1255px;" version="1.1" viewBox="0 0 2678 1255" width="2678px" zoomAndPan="magnify"><defs><filter height="300%" id="f52skes7don2n" width="300%" x="-1" y="-1"><feGaussianBlur result="blurOut" stdDeviation="2.0"/><feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/><feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/><feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/></filter></defs><g><text fill="#000000" font-family="sans-serif" font-size="18" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="89" x="1293.5" y="26.708">µRtWare</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="183" x="1246.5" y="47.6611">urtPublisherPublish()</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="0" x="1341" y="68.6143"/><path d="M351,72.8594 L351,264.4531 A0,0 0 0 0 351,264.4531 L736,264.4531 A0,0 0 0 0 736,264.4531 L736,172.6563 L756,168.6563 L736,164.6563 L736,82.8594 L726,72.8594 L351,72.8594 A0,0 0 0 0 351,72.8594 " fill="#FBFB77" filter="url(#f52skes7don2n)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M726,72.8594 L726,82.8594 L736,82.8594 L726,72.8594 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="351" x2="427.5" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="431.5" y="89.4263"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="72" x="431.5" y="89.4263">publisher</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="144" x="511.5" y="89.4263">: urt_publisher_t*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="659.5" y="89.4263"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="659.5" x2="736" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="197" x="357" y="105.0591">Pointer to the publisher to use.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="76" x="357" y="120.1919">Must not be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="437" y="120.1919">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="4" x="469" y="120.1919">.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="351" x2="479.5" y1="130.8242" y2="130.8242"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="483.5" y="134.8247"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="56" x="483.5" y="134.8247">payload</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="56" x="547.5" y="134.8247">: void*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="607.5" y="134.8247"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="607.5" x2="736" y1="130.8242" y2="130.8242"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="226" x="357" y="150.4575">Pointer to the data to be published.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="46" x="357" y="165.5903">May be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="407" y="165.5903">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="195" x="443" y="165.5903">for messages without payload.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="351" x2="499.5" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="503.5" y="180.2231"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="8" x="503.5" y="180.2231">n</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="64" x="519.5" y="180.2231">: size_t</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="587.5" y="180.2231"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="587.5" x2="736" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="180" x="357" y="195.856">Size of the payload in bytes.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="351" x2="475.5" y1="206.4883" y2="206.4883"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="479.5" y="210.4888"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="8" x="479.5" y="210.4888">t</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="112" x="495.5" y="210.4888">: urt_osTime_t</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="611.5" y="210.4888"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="611.5" x2="736" y1="206.4883" y2="206.4883"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="246" x="357" y="226.1216">Timestamp to be set for the message.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="351" x2="455.5" y1="236.7539" y2="236.7539"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="459.5" y="240.7544"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="56" x="459.5" y="240.7544">timeout</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="104" x="523.5" y="240.7544">: urt_delay_t</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="631.5" y="240.7544"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="631.5" x2="736" y1="236.7539" y2="236.7539"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="364" x="357" y="256.3872">Timeout delay in case the message cannot be published.</text><ellipse cx="766" cy="168.6563" fill="#000000" filter="url(#f52skes7don2n)" rx="10" ry="10" style="stroke: none; stroke-width: 1.0;"/><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="80" x="726" y="284.4531"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="60" x="736" y="305.5918">lock topic</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="137" x="697.5" y="338.4219"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="117" x="707.5" y="359.5605">lock next message</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="122" x="705" y="448.1011"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="102" x="715" y="469.2397">unlock message</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="524" x="504" y="502.0698"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="504" x="514" y="523.2085">wait for topic's condition variable (using topic's mutex) to be signaled or timeout</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="106" x="713" y="556.0386"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="86" x="723" y="577.1772">lock message</text><polygon fill="#FEFECE" filter="url(#f52skes7don2n)" points="626,392.3906,906,392.3906,918,404.3906,906,416.3906,626,416.3906,614,404.3906,626,392.3906" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="770" y="426.6011">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="280" x="626" y="408.1987">HRT consumers left for the message or timeout?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="600" y="401.7964">no</text><polygon fill="#FEFECE" filter="url(#f52skes7don2n)" points="713,632.0073,819,632.0073,831,644.0073,819,656.0073,713,656.0073,701,644.0073,713,632.0073" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="106" x="713" y="647.8154">Timeout occurred?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="681" y="641.4131">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="831" y="641.4131">no</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="122" x="36.5" y="666.0073"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="102" x="46.5" y="687.146">unlock message</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="96" x="49.5" y="734.9761"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="76" x="59.5" y="756.1147">unlock topic</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="175" x="10" y="803.9448"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="39" x="20" y="825.0835">return</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="112" x="63" y="825.0835">URT_STATUS_ERROR</text><rect fill="#000000" filter="url(#f52skes7don2n)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="2471" x="195" y="666.0073"/><rect fill="#000000" filter="url(#f52skes7don2n)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="1014" x="207" y="756.812"/><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="251" x="219" y="782.812"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="231" x="229" y="803.9507">iterate topic pointer to this message</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="180" x="498" y="782.812"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="160" x="508" y="803.9507">copy payload to message</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="187" x="706" y="782.812"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="167" x="716" y="803.9507">set origin time of message</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="286" x="921" y="782.812"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="266" x="931" y="803.9507">set number of HRT consumers (from topic)</text><rect fill="#000000" filter="url(#f52skes7don2n)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="1014" x="207" y="836.7808"/><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="122" x="652" y="877.7808"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="102" x="662" y="898.9194">unlock message</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="398" x="1249" y="817.2964"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="378" x="1259" y="838.4351">set QoS rate timer (@topic) wrt. most critical HRT subscriber</text><path d="M1675,805.6323 L1675,830.7651 A0,0 0 0 0 1675,830.7651 L2170,830.7651 A0,0 0 0 0 2170,830.7651 L2170,823.6323 L2190,818.1987 L2170,815.6323 L2170,815.6323 L2160,805.6323 L1675,805.6323 A0,0 0 0 0 1675,805.6323 " fill="#FBFB77" filter="url(#f52skes7don2n)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M2160,805.6323 L2160,815.6323 L2170,815.6323 L2160,805.6323 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="474" x="1681" y="822.6992">No lock required since this timer is only accessed when the topic is locked.</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="434" x="2190" y="801.2144"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="414" x="2200" y="822.353">set QoS delay timer (@subscriber) wrt. origin time of the message</text><polygon fill="#FEFECE" filter="url(#f52skes7don2n)" points="2277,752.812,2537,752.812,2549,764.812,2537,776.812,2277,776.812,2265,764.812,2277,752.812" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="2411" y="787.0225">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="260" x="2277" y="768.6201">QoS delay timer (@subscriber) is not armed?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="2549" y="762.2178">no</text><polygon fill="#FEFECE" filter="url(#f52skes7don2n)" points="2407,859.5854,2419,871.5854,2407,883.5854,2395,871.5854,2407,859.5854" style="stroke: #A80036; stroke-width: 1.5;"/><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="208" x="2303" y="918.5854"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="188" x="2313" y="939.7241">iterate to next HRT subscriber</text><polygon fill="#FEFECE" filter="url(#f52skes7don2n)" points="2346,692.0073,2468,692.0073,2480,704.0073,2468,716.0073,2346,716.0073,2334,704.0073,2346,692.0073" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="2411" y="726.2178">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="122" x="2346" y="707.8154">HRT subscribers left?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="2320" y="701.4131">no</text><rect fill="#000000" filter="url(#f52skes7don2n)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="2471" x="195" y="994.5542"/><path d="M1053,1024.9722 L1053,1050.105 A0,0 0 0 0 1053,1050.105 L1389,1050.105 A0,0 0 0 0 1389,1050.105 L1389,1042.9722 L1409,1037.5386 L1389,1034.9722 L1389,1034.9722 L1379,1024.9722 L1053,1024.9722 A0,0 0 0 0 1053,1024.9722 " fill="#FBFB77" filter="url(#f52skes7don2n)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M1379,1024.9722 L1379,1034.9722 L1389,1034.9722 L1379,1024.9722 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="315" x="1059" y="1042.0391">Msut be within topic lock because of HRT counter.</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="79" x="1409" y="1020.5542"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="59" x="1419" y="1041.6929">fire event</text><rect fill="#FEFECE" filter="url(#f52skes7don2n)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; 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stroke-width: 1.0;"/><polygon fill="#FEFECE" filter="url(#f1bh34zu0bgazr)" points="375,178.5234,423,178.5234,435,190.5234,423,202.5234,375,202.5234,363,190.5234,375,178.5234" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="22" x="403" y="212.7339">HRT</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="48" x="375" y="194.3315">RT class</text><path d="M10,238.6519 L10,263.7847 A0,0 0 0 0 10,263.7847 L344,263.7847 A0,0 0 0 0 344,263.7847 L344,256.6519 L364,251.2183 L344,248.6519 L344,248.6519 L334,238.6519 L10,238.6519 A0,0 0 0 0 10,238.6519 " fill="#FBFB77" filter="url(#f1bh34zu0bgazr)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M334,238.6519 L334,248.6519 L344,248.6519 L334,238.6519 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="313" x="16" y="255.7188">Otherwise some QoS timer would have triggered.</text><rect fill="#FEFECE" filter="url(#f1bh34zu0bgazr)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; 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<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="2036px" preserveAspectRatio="none" style="width:1846px;height:2036px;" version="1.1" viewBox="0 0 1846 2036" width="1846px" zoomAndPan="magnify"><defs><filter height="300%" id="f1gna4y7n2gv27" width="300%" x="-1" y="-1"><feGaussianBlur result="blurOut" stdDeviation="2.0"/><feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/><feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/><feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/></filter></defs><g><text fill="#000000" font-family="sans-serif" font-size="18" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="89" x="877.5" y="26.708">µRtWare</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="309" x="767.5" y="47.6611">urtSubscriberFetchLatestMessage()</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="0" x="925" y="68.6143"/><path d="M582.5,72.8594 L582.5,249.3203 A0,0 0 0 0 582.5,249.3203 L887.5,249.3203 A0,0 0 0 0 887.5,249.3203 L887.5,165.0898 L907.5,161.0898 L887.5,157.0898 L887.5,82.8594 L877.5,72.8594 L582.5,72.8594 A0,0 0 0 0 582.5,72.8594 " fill="#FBFB77" filter="url(#f1gna4y7n2gv27)" style="stroke: #A80036; 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stroke-width: 1.0;" x1="582.5" x2="671" y1="130.8242" y2="130.8242"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="675" y="134.8247"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="56" x="675" y="134.8247">payload</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="56" x="739" y="134.8247">: void*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="799" y="134.8247"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="799" x2="887.5" y1="130.8242" y2="130.8242"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="238" x="588.5" y="150.4575">Pointer where to copy the payload to.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="46" x="588.5" y="165.5903">May be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="638.5" y="165.5903">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="195" x="674.5" y="165.5903">for messages without payload.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="582.5" x2="675" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="679" y="180.2231"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="40" x="679" y="180.2231">bytes</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="64" x="727" y="180.2231">: size_t</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="795" y="180.2231"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="795" x2="887.5" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="137" x="588.5" y="195.856">Payload size in bytes.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="582.5" x2="643" y1="206.4883" y2="206.4883"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="647" y="210.4888"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="56" x="647" y="210.4888">latency</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="112" x="711" y="210.4888">: urt_delay_t*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="827" y="210.4888"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="827" x2="887.5" y1="206.4883" y2="206.4883"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="267" x="588.5" y="226.1216">The latency can be returned by reference.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="46" x="588.5" y="241.2544">May be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="638.5" y="241.2544">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="4" x="670.5" y="241.2544">.</text><ellipse cx="917.5" cy="161.0898" fill="#000000" filter="url(#f1gna4y7n2gv27)" rx="10" ry="10" style="stroke: none; stroke-width: 1.0;"/><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="80" x="877.5" y="269.3203"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="60" x="887.5" y="290.459">lock topic</text><polygon fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" points="864,323.2891,971,323.2891,983,335.2891,971,347.2891,864,347.2891,852,335.2891,864,323.2891" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="107" x="864" y="339.0972">Is HRT subscriber?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="832" y="332.6948">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="983" y="332.6948">no</text><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="137" x="529.875" y="357.2891"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="117" x="539.875" y="378.4277">lock next message</text><polygon fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" points="1137.125,357.2891,1336.125,357.2891,1348.125,369.2891,1336.125,381.2891,1137.125,381.2891,1125.125,369.2891,1137.125,357.2891" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="199" x="1137.125" y="373.0972">Has a message been read before?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="1105.125" y="366.6948">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="1348.125" y="366.6948">no</text><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="166" x="932.375" y="391.2891"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="146" x="942.375" y="412.4277">lock last read message</text><rect fill="#FFFFFF" filter="url(#f1gna4y7n2gv27)" height="319.9136" style="stroke: #000000; stroke-width: 2.0;" width="566" x="706.875" y="491.77"/><path d="M890.875,492.77 L890.875,501.0669 L880.875,511.0669 L706.875,511.0669 " fill="none" style="stroke: #000000; stroke-width: 2.0;"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="174" x="709.875" y="505.7651">find oldest valid message</text><path d="M716.875,532.4849 L716.875,557.6177 A0,0 0 0 0 716.875,557.6177 L926.875,557.6177 A0,0 0 0 0 926.875,557.6177 L926.875,550.4849 L946.875,545.0513 L926.875,542.4849 L926.875,542.4849 L916.875,532.4849 L716.875,532.4849 A0,0 0 0 0 716.875,532.4849 " fill="#FBFB77" filter="url(#f1gna4y7n2gv27)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M916.875,532.4849 L916.875,542.4849 L926.875,542.4849 L916.875,532.4849 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="189" x="722.875" y="549.5518">Locked two messages ahead.</text><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="137" x="946.875" y="528.0669"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="117" x="956.875" y="549.2056">lock next message</text><rect fill="#000000" filter="url(#f1gna4y7n2gv27)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="453" x="788.875" y="637.7461"/><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="172" x="802.875" y="663.7461"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="152" x="812.875" y="684.8848">unlock current message</text><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="225" x="1002.875" y="663.7461"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="205" x="1012.875" y="684.8848">lock one message further ahead</text><rect fill="#000000" filter="url(#f1gna4y7n2gv27)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="453" x="788.875" y="717.7148"/><polygon fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" points="882.375,582.0356,1148.375,582.0356,1160.375,594.0356,1148.375,606.0356,882.375,606.0356,870.375,594.0356,882.375,582.0356" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="1019.375" y="616.2461">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="266" x="882.375" y="597.8438">Timestamp of next is younger than of current?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="856.375" y="591.4414">no</text><path d="M734.875,770.1328 L734.875,795.2656 A0,0 0 0 0 734.875,795.2656 L918.875,795.2656 A0,0 0 0 0 918.875,795.2656 L918.875,788.1328 L938.875,782.6992 L918.875,780.1328 L918.875,780.1328 L908.875,770.1328 L734.875,770.1328 A0,0 0 0 0 734.875,770.1328 " fill="#FBFB77" filter="url(#f1gna4y7n2gv27)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M908.875,770.1328 L908.875,780.1328 L918.875,780.1328 L908.875,770.1328 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="163" x="740.875" y="787.1997">One message still locked.</text><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="153" x="938.875" y="765.7148"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="133" x="948.875" y="786.8535">unlock next message</text><polygon fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" points="903.375,445.2578,1127.375,445.2578,1139.375,457.2578,1127.375,469.2578,903.375,469.2578,891.375,457.2578,903.375,445.2578" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="1019.375" y="479.4683">no</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="224" x="903.375" y="461.0659">Message timestamp equals local copy?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="1139.375" y="454.6636">yes</text><polygon fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" points="1015.375,831.6836,1027.375,843.6836,1015.375,855.6836,1003.375,843.6836,1015.375,831.6836" style="stroke: #A80036; stroke-width: 1.5;"/><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="286" x="1314.875" y="391.2891"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="266" x="1324.875" y="412.4277">lock message after topic's latest message</text><polygon fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" points="1236.625,861.6836,1248.625,873.6836,1236.625,885.6836,1224.625,873.6836,1236.625,861.6836" style="stroke: #A80036; stroke-width: 1.5;"/><polygon fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" points="917.5,891.6836,929.5,903.6836,917.5,915.6836,905.5,903.6836,917.5,891.6836" style="stroke: #A80036; stroke-width: 1.5;"/><rect fill="#FFFFFF" filter="url(#f1gna4y7n2gv27)" height="522.687" style="stroke: #000000; stroke-width: 2.0;" width="990" x="421" y="926.4854"/><path d="M535,927.4854 L535,935.7822 L525,945.7822 L421,945.7822 " fill="none" style="stroke: #000000; stroke-width: 2.0;"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="104" x="424" y="940.4805">iterate to latest</text><path d="M575,967.2002 L575,992.333 A0,0 0 0 0 575,992.333 L785,992.333 A0,0 0 0 0 785,992.333 L785,985.2002 L805,979.7666 L785,977.2002 L785,977.2002 L775,967.2002 L575,967.2002 A0,0 0 0 0 575,967.2002 " fill="#FBFB77" filter="url(#f1gna4y7n2gv27)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M775,967.2002 L775,977.2002 L785,977.2002 L775,967.2002 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="189" x="581" y="984.2671">Locked two messages ahead.</text><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="225" x="805" y="962.7822"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="205" x="815" y="983.9209">lock one message further ahead</text><rect fill="#000000" filter="url(#f1gna4y7n2gv27)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="925" x="455" y="1072.4614"/><rect fill="#000000" filter="url(#f1gna4y7n2gv27)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="612" x="479" y="1146.8638"/><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="296" x="493" y="1172.8638"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="276" x="503" y="1194.0024">decrement HRT counter of current message</text><rect fill="#FEFECE" filter="url(#f1gna4y7n2gv27)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="260" x="817" y="1172.8638"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="240" x="827" y="1194.0024">update QoS delay timer (@subscriber)</text><rect fill="#000000" filter="url(#f1gna4y7n2gv27)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; 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        :unlock next message;

        note: One message still locked.

    :lock message after topic's latest message;

  :lock one message further ahead;

  note: Locked two messages ahead.

    fork

      if (Is HRT subscriber?) then (yes)

        fork

          :decrement HRT counter of current message;

        fork again

          :update QoS delay timer (@subscriber);

        endfork

      else (no)

      endif

      :unlock current message;

    fork again

      :lock one message further ahead;

    endfork

  :unlock next message;

  note: One message still locked.

:unlock message;

  :lock next message;

    :lock last read message;

        :lock next message;

        note: Locked two messages ahead.

          fork

            :unlock current message;

          fork again

            :lock one message further ahead;

          endfork

        :unlock next message;

        note: One message still locked.

    :lock message after topic's latest message;

  :lock one message further ahead;

  note: Locked two messages ahead.

    fork

      if (Is HRT subscriber?) then (yes)

        fork

          :decrement HRT counter of current message;

        fork again

          :update QoS delay timer (@subscriber);

        endfork

      else (no)

      endif

      :unlock current message;

    fork again

      :lock one message further ahead;

    endfork

  :unlock next message;

  note: One message still locked.

:unlock message;

<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="1502px" preserveAspectRatio="none" style="width:1846px;height:1502px;" version="1.1" viewBox="0 0 1846 1502" width="1846px" zoomAndPan="magnify"><defs><filter height="300%" id="fxzoig5nbtsvt" width="300%" x="-1" y="-1"><feGaussianBlur result="blurOut" stdDeviation="2.0"/><feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/><feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/><feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/></filter></defs><g><text fill="#000000" font-family="sans-serif" font-size="18" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="89" x="877.5" y="26.708">µRtWare</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="299" x="772.5" y="47.6611">urtSubscriberFetchNextMessage()</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="0" x="925" y="68.6143"/><path d="M582.5,72.8594 L582.5,249.3203 A0,0 0 0 0 582.5,249.3203 L887.5,249.3203 A0,0 0 0 0 887.5,249.3203 L887.5,165.0898 L907.5,161.0898 L887.5,157.0898 L887.5,82.8594 L877.5,72.8594 L582.5,72.8594 A0,0 0 0 0 582.5,72.8594 " fill="#FBFB77" filter="url(#fxzoig5nbtsvt)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M877.5,72.8594 L877.5,82.8594 L887.5,82.8594 L877.5,72.8594 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="582.5" x2="611" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="615" y="89.4263"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="80" x="615" y="89.4263">subscriber</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="152" x="703" y="89.4263">: urt_subscriber_t*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="859" y="89.4263"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="859" x2="887.5" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="284" x="588.5" y="105.0591">The subscriber that shall fetch the message.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="76" x="588.5" y="120.1919">Must not be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="668.5" y="120.1919">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="4" x="700.5" y="120.1919">.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="582.5" x2="671" y1="130.8242" y2="130.8242"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="675" y="134.8247"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="56" x="675" y="134.8247">payload</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="56" x="739" y="134.8247">: void*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="799" y="134.8247"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="799" x2="887.5" y1="130.8242" y2="130.8242"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="238" x="588.5" y="150.4575">Pointer where to copy the payload to.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="46" x="588.5" y="165.5903">May be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="638.5" y="165.5903">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="195" x="674.5" y="165.5903">for messages without payload.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="582.5" x2="675" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="679" y="180.2231"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="40" x="679" y="180.2231">bytes</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="64" x="727" y="180.2231">: size_t</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="795" y="180.2231"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="795" x2="887.5" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="137" x="588.5" y="195.856">Payload size in bytes.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="582.5" x2="643" y1="206.4883" y2="206.4883"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="647" y="210.4888"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="56" x="647" y="210.4888">latency</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="112" x="711" y="210.4888">: urt_delay_t*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="827" y="210.4888"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="827" x2="887.5" y1="206.4883" y2="206.4883"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="267" x="588.5" y="226.1216">The latency can be returned by reference.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="46" x="588.5" y="241.2544">May be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="638.5" y="241.2544">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="4" x="670.5" y="241.2544">.</text><ellipse cx="917.5" cy="161.0898" fill="#000000" filter="url(#fxzoig5nbtsvt)" rx="10" ry="10" style="stroke: none; stroke-width: 1.0;"/><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="80" x="877.5" y="269.3203"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="60" x="887.5" y="290.459">lock topic</text><polygon fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" points="864,323.2891,971,323.2891,983,335.2891,971,347.2891,864,347.2891,852,335.2891,864,323.2891" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="107" x="864" y="339.0972">Is HRT subscriber?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="832" y="332.6948">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="983" y="332.6948">no</text><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="137" x="529.875" y="357.2891"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="117" x="539.875" y="378.4277">lock next message</text><polygon fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" points="1137.125,357.2891,1336.125,357.2891,1348.125,369.2891,1336.125,381.2891,1137.125,381.2891,1125.125,369.2891,1137.125,357.2891" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="199" x="1137.125" y="373.0972">Has a message been read before?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="1105.125" y="366.6948">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="1348.125" y="366.6948">no</text><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="166" x="932.375" y="391.2891"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="146" x="942.375" y="412.4277">lock last read message</text><rect fill="#FFFFFF" filter="url(#fxzoig5nbtsvt)" height="319.9136" style="stroke: #000000; stroke-width: 2.0;" width="566" x="706.875" y="491.77"/><path d="M890.875,492.77 L890.875,501.0669 L880.875,511.0669 L706.875,511.0669 " fill="none" style="stroke: #000000; stroke-width: 2.0;"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="174" x="709.875" y="505.7651">find oldest valid message</text><path d="M716.875,532.4849 L716.875,557.6177 A0,0 0 0 0 716.875,557.6177 L926.875,557.6177 A0,0 0 0 0 926.875,557.6177 L926.875,550.4849 L946.875,545.0513 L926.875,542.4849 L926.875,542.4849 L916.875,532.4849 L716.875,532.4849 A0,0 0 0 0 716.875,532.4849 " fill="#FBFB77" filter="url(#fxzoig5nbtsvt)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M916.875,532.4849 L916.875,542.4849 L926.875,542.4849 L916.875,532.4849 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="189" x="722.875" y="549.5518">Locked two messages ahead.</text><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="137" x="946.875" y="528.0669"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="117" x="956.875" y="549.2056">lock next message</text><rect fill="#000000" filter="url(#fxzoig5nbtsvt)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="453" x="788.875" y="637.7461"/><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="172" x="802.875" y="663.7461"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="152" x="812.875" y="684.8848">unlock current message</text><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="225" x="1002.875" y="663.7461"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="205" x="1012.875" y="684.8848">lock one message further ahead</text><rect fill="#000000" filter="url(#fxzoig5nbtsvt)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="453" x="788.875" y="717.7148"/><polygon fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" points="853.875,582.0356,1176.875,582.0356,1188.875,594.0356,1176.875,606.0356,853.875,606.0356,841.875,594.0356,853.875,582.0356" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="1019.375" y="616.2461">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="323" x="853.875" y="597.8438">Timestamp of next message is younger than of current?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="827.875" y="591.4414">no</text><path d="M734.875,770.1328 L734.875,795.2656 A0,0 0 0 0 734.875,795.2656 L918.875,795.2656 A0,0 0 0 0 918.875,795.2656 L918.875,788.1328 L938.875,782.6992 L918.875,780.1328 L918.875,780.1328 L908.875,770.1328 L734.875,770.1328 A0,0 0 0 0 734.875,770.1328 " fill="#FBFB77" filter="url(#fxzoig5nbtsvt)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M908.875,770.1328 L908.875,780.1328 L918.875,780.1328 L908.875,770.1328 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="163" x="740.875" y="787.1997">One message still locked.</text><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="153" x="938.875" y="765.7148"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="133" x="948.875" y="786.8535">unlock next message</text><polygon fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" points="903.375,445.2578,1127.375,445.2578,1139.375,457.2578,1127.375,469.2578,903.375,469.2578,891.375,457.2578,903.375,445.2578" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="1019.375" y="479.4683">no</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="224" x="903.375" y="461.0659">Message timestamp equals local copy?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="1139.375" y="454.6636">yes</text><polygon fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" points="1015.375,831.6836,1027.375,843.6836,1015.375,855.6836,1003.375,843.6836,1015.375,831.6836" style="stroke: #A80036; stroke-width: 1.5;"/><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="286" x="1314.875" y="391.2891"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="266" x="1324.875" y="412.4277">lock message after topic's latest message</text><polygon fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" points="1236.625,861.6836,1248.625,873.6836,1236.625,885.6836,1224.625,873.6836,1236.625,861.6836" style="stroke: #A80036; stroke-width: 1.5;"/><polygon fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" points="917.5,891.6836,929.5,903.6836,917.5,915.6836,905.5,903.6836,917.5,891.6836" style="stroke: #A80036; stroke-width: 1.5;"/><rect fill="#000000" filter="url(#fxzoig5nbtsvt)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="1825" x="10" y="935.6836"/><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="352" x="22" y="1118.9727"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="332" x="32" y="1140.1113">set last fetched message pointer to locked message</text><rect fill="#000000" filter="url(#fxzoig5nbtsvt)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="586" x="384" y="1044.5703"/><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="196" x="396" y="1118.9727"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="176" x="406" y="1140.1113">copy timestamp of message</text><rect fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="304" x="630" y="1118.9727"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="284" x="640" y="1140.1113">set latency value (now - message origin time)</text><polygon fill="#FEFECE" filter="url(#fxzoig5nbtsvt)" points="662,1070.5703,902,1070.5703,914,1082.5703,902,1094.5703,662,1094.5703,650,1082.5703,662,1070.5703" style="stroke: #A80036; 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  :lock next message;

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        :lock next message;

        note: Locked two messages ahead.

          fork

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          fork again

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          endfork

        :unlock next message;

        note: One message still locked.

    :lock message after topic's latest message;

:unlock message;

  :lock next message;

    :lock last read message;

        :lock next message;

        note: Locked two messages ahead.

          fork

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          fork again

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          endfork

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        note: One message still locked.

    :lock message after topic's latest message;

:unlock message;

<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="1079px" preserveAspectRatio="none" style="width:1747px;height:1079px;" version="1.1" viewBox="0 0 1747 1079" width="1747px" zoomAndPan="magnify"><defs><filter height="300%" id="f555gmqt6z79y" width="300%" x="-1" y="-1"><feGaussianBlur result="blurOut" stdDeviation="2.0"/><feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/><feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/><feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/></filter></defs><g><text fill="#000000" font-family="sans-serif" font-size="18" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="89" x="828.375" y="26.708">µRtWare</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="158" x="793.875" y="47.6611">urtSubscriberFrt()</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="0" x="875.875" y="68.6143"/><path d="M10,72.8594 L10,370.3828 A0,0 0 0 0 10,370.3828 L710,370.3828 A0,0 0 0 0 710,370.3828 L710,225.6211 L730,221.6211 L710,217.6211 L710,82.8594 L700,72.8594 L10,72.8594 A0,0 0 0 0 10,72.8594 " fill="#FBFB77" filter="url(#f555gmqt6z79y)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M700,72.8594 L700,82.8594 L710,82.8594 L700,72.8594 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="10" x2="236" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="240" y="89.4263"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="80" x="240" y="89.4263">subscriber</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="152" x="328" y="89.4263">: urt_subscriber_t*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="484" y="89.4263"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="484" x2="710" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="298" x="16" y="105.0591">The subscriber which shall subscribe to a topic.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="76" x="16" y="120.1919">Must not be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="96" y="120.1919">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="4" x="128" y="120.1919">.</text><line style="stroke: #A80036; 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stroke-width: 1.0;" x1="10" x2="256" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="260" y="180.2231"/><text fill="#000000" font-family="monospace" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="64" x="260" y="180.2231">messages</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="128" x="332" y="180.2231">: urt_message_t*</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="464" y="180.2231"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="464" x2="710" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="303" x="16" y="195.856">List of messages to be contributed to the topic.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="373" x="16" y="210.9888">Those messages must not be associated to another topic.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="517" x="16" y="226.1216">Once a message was contributed, it cannot be removed from the topic anymore.</text><line style="stroke: #A80036; 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stroke-width: 1.0;" width="1264" x="472.75" y="584.3203"/><rect fill="#FFFFFF" filter="url(#f555gmqt6z79y)" height="151.2344" style="stroke: #000000; stroke-width: 2.0;" width="638" x="496.75" y="656.8325"/><path d="M653.75,657.8325 L653.75,666.1294 L643.75,676.1294 L496.75,676.1294 " fill="none" style="stroke: #000000; stroke-width: 2.0;"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="147" x="499.75" y="670.8276">contribute messages</text><rect fill="#FEFECE" filter="url(#f555gmqt6z79y)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="474" x="578.75" y="693.1294"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="454" x="588.75" y="714.2681">set next pointer of topic's latest message to first message to contribute</text><rect fill="#FEFECE" filter="url(#f555gmqt6z79y)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="618" x="506.75" y="762.0981"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="598" x="516.75" y="783.2368">set next pointer of last message to contribute to the message after the topic's latest message</text><polygon fill="#FEFECE" filter="url(#f555gmqt6z79y)" points="745.75,610.3203,885.75,610.3203,897.75,622.3203,885.75,634.3203,745.75,634.3203,733.75,622.3203,745.75,610.3203" style="stroke: #A80036; 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stroke-width: 1.5;" width="217" x="1507.75" y="719.4653"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="197" x="1517.75" y="740.604">register to topic's event source</text><rect fill="#000000" filter="url(#f555gmqt6z79y)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="1264" x="472.75" y="872.0669"/><rect fill="#FEFECE" filter="url(#f555gmqt6z79y)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="96" x="1066.75" y="898.0669"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="76" x="1076.75" y="919.2056">unlock topic</text><rect fill="#FEFECE" filter="url(#f555gmqt6z79y)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="154" x="1037.75" y="952.0356"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="39" x="1047.75" y="973.1743">return</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="91" x="1090.75" y="973.1743">URT_STATUS_OK</text><polygon fill="#FEFECE" filter="url(#f555gmqt6z79y)" points="740,992.0044,752,1004.0044,740,1016.0044,728,1004.0044,740,992.0044" style="stroke: #A80036; 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stroke-width: 1.0;"/><!--MD5=[a74ab46ba53b86df339b4734eb9fd9c0]

  :lock topic;

    if (Messages to contribute?) then (yes)

      partition "contribute messages" {

        :set next pointer of topic's latest message to first message to contribute;

        :set next pointer of last message to contribute to the message after the topic's latest message;

      }

    else (no)

    endif

  fork again

    :set message pointer to topic's latest message;

  :unlock topic;

  :lock topic;

    if (Messages to contribute?) then (yes)

      partition "contribute messages" {

        :set next pointer of topic's latest message to first message to contribute;

        :set next pointer of last message to contribute to the message after the topic's latest message;

      }

    else (no)

    endif

  fork again

    :set message pointer to topic's latest message;

  :unlock topic;

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  :lock topic;

    if (Messages to contribute?) then (yes)

      partition "contribute messages" {

        :set next pointer of topic's latest message to first message to contribute;

        :set next pointer of last message to contribute to the message after the topic's latest message;

      }

    else (no)

    endif

  fork again

    :set message pointer to topic's latest message;

  :unlock topic;

  :lock topic;

    if (Messages to contribute?) then (yes)

      partition "contribute messages" {

        :set next pointer of topic's latest message to first message to contribute;

        :set next pointer of last message to contribute to the message after the topic's latest message;

      }

    else (no)

    endif

  fork again

    :set message pointer to topic's latest message;

  :unlock topic;

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