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chore: preserve current FreeRTOS and C card updates

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2026-07-21 19:14:19 +02:00
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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="600.2823px" preserveAspectRatio="none" style="width:346px;height:600px;" version="1.1" viewBox="0 0 346 600" width="346.9454px" zoomAndPan="magnify"><defs/><g><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="154.5281" x="99.1803" y="7.9418">A6 STATE — block state and heap statistics</text><ellipse cx="212.8476" cy="23.6993" fill="#000000" rx="7.4292" ry="7.4292" style="stroke: none; stroke-width: 0.742923663722561;"/><rect fill="#EDF6FA" height="37.1462" rx="9.2865" ry="9.2865" style="stroke: #2C7794; stroke-width: 1.1143854955838415;" width="37.1462" x="194.2745" y="86.8478"/><line style="stroke: #2C7794; stroke-width: 1.1143854955838415;" x1="194.2745" x2="231.4207" y1="104.3956" y2="104.3956"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="15.6014" x="205.0469" y="98.5042">Free</text><rect fill="#EDF6FA" height="37.1462" rx="9.2865" ry="9.2865" style="stroke: #2C7794; stroke-width: 1.1143854955838415;" width="48.29" x="188.7026" y="190.1142"/><line style="stroke: #2C7794; stroke-width: 1.1143854955838415;" x1="188.7026" x2="236.9926" y1="207.662" y2="207.662"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="33.4316" x="196.1318" y="201.7706">Allocated</text><rect fill="#EDF6FA" height="45.2143" rx="9.2865" ry="9.2865" style="stroke: #2C7794; stroke-width: 1.1143854955838415;" width="101.0376" x="111.0671" y="282.9796"/><line style="stroke: #2C7794; stroke-width: 1.1143854955838415;" x1="111.0671" x2="212.1047" y1="300.5275" y2="300.5275"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="43.0896" x="140.0411" y="294.6361">Fragmented</text><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="65.3773" x="114.7817" y="312.1839">03 two free blocks</text><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="86.1791" x="114.7817" y="322.3025">sum free &gt; largest block</text><rect fill="#EDF6FA" height="45.2143" rx="9.2865" ry="9.2865" style="stroke: #2C7794; stroke-width: 1.1143854955838415;" width="103.2664" x="4.4575" y="394.3142"/><line style="stroke: #2C7794; stroke-width: 1.1143854955838415;" x1="4.4575" x2="107.7239" y1="411.862" y2="411.862"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="36.4033" x="37.8891" y="405.9706">Coalesced</text><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="61.6627" x="8.1722" y="423.5185">04 one free block</text><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="88.4079" x="8.1722" y="433.6371">current free = initial free</text><rect fill="#EDF6FA" height="37.1462" rx="9.2865" ry="9.2865" style="stroke: #2C7794; stroke-width: 1.1143854955838415;" width="78.7499" x="16.7158" y="495.2478"/><line style="stroke: #2C7794; stroke-width: 1.1143854955838415;" x1="16.7158" x2="95.4657" y1="512.7956" y2="512.7956"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="48.29" x="31.9457" y="506.9042">OOMChecked</text><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="63.8914" x="20.4304" y="524.4521">NULL + hook once</text><ellipse cx="56.0907" cy="585.1415" fill="none" rx="7.4292" ry="7.4292" style="stroke: #000000; stroke-width: 0.742923663722561;"/><ellipse cx="56.4622" cy="585.513" fill="#000000" rx="4.4575" ry="4.4575" style="stroke: none; stroke-width: 0.742923663722561;"/><rect fill="#EDF6FA" height="37.1462" rx="9.2865" ry="9.2865" style="stroke: #2C7794; stroke-width: 1.1143854955838415;" width="77.2641" x="190.5599" y="398.3482"/><line style="stroke: #2C7794; stroke-width: 1.1143854955838415;" x1="190.5599" x2="267.824" y1="415.8961" y2="415.8961"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="62.4056" x="197.9892" y="410.0047">05 minimum-ever</text><!--MD5=[f16808fa220dde377303612249059854]
link *start to Free--><path d="M212.8476,31.2845 C212.8476,42.3689 212.8476,64.7384 212.8476,81.885 " fill="none" id="*start-&gt;Free" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="212.8476,85.4436,215.8193,78.7573,212.8476,81.729,209.8759,78.7573,212.8476,85.4436" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="57.948" x="213.5906" y="62.101">01 one list node</text><!--MD5=[19abaf48dc778410378e95e0d1bca006]
link Free to Allocated--><path d="M212.8476,124.358 C212.8476,141.3635 212.8476,166.8235 212.8476,185.1663 " fill="none" id="Free-&gt;Allocated" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="212.8476,188.7843,215.8193,182.098,212.8476,185.0697,209.8759,182.098,212.8476,188.7843" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="59.4339" x="224.3629" y="154.9664">02 first-fit + split</text><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="80.9787" x="213.5906" y="165.085">current free decreases</text><!--MD5=[f6fa3e1917b73de38ea03346a6903b17]
link Allocated to Fragmented--><path d="M203.0856,227.6021 C195.3518,241.9925 184.4382,262.304 175.746,278.4849 " fill="none" id="Allocated-&gt;Fragmented" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="174.0076,281.7241,179.7784,277.2257,175.7573,278.4473,174.5357,274.4262,174.0076,281.7241" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="43.0896" x="191.028" y="258.2328">free A and C</text><!--MD5=[c73bca393b062d6a86dff80fa900c78c]
link Fragmented to Coalesced--><path d="M110.7031,318.744 C93.6455,325.4006 76.1571,335.4523 65.0058,350.4817 C56.8188,361.5141 54.33,376.536 54.0031,389.4331 " fill="none" id="Fragmented-&gt;Coalesced" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="53.9808,392.9546,56.9907,386.2854,54.0021,389.24,51.0474,386.2514,53.9808,392.9546" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="21.5448" x="110.6956" y="359.1664">free B</text><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="111.4385" x="65.7487" y="369.285">address-order joins neighbours</text><!--MD5=[2b306524d92469efb3bb270d490680cf]
link Coalesced to OOMChecked--><path d="M56.0907,439.7959 C56.0907,454.8922 56.0907,474.8471 56.0907,490.1216 " fill="none" id="Coalesced-&gt;OOMChecked" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="56.0907,493.7842,59.0624,487.0979,56.0907,490.0696,53.119,487.0979,56.0907,493.7842" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="57.2051" x="56.8337" y="470.501">request &gt; arena</text><!--MD5=[6b8be85e17f6174335a5329fe1414850]
link OOMChecked to *end--><path d="M56.0907,532.55 C56.0907,545.306 56.0907,562.0366 56.0907,573.0022 " fill="none" id="OOMChecked-&gt;*end" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="56.0907,576.4716,59.0624,569.7853,56.0907,572.757,53.119,569.7853,56.0907,576.4716" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><!--MD5=[b09143a670c8c67aa163b99fca5c6b6b]
link Allocated to MIN--><path d="M228.8056,227.6169 C233.6049,234.1101 238.3299,241.7622 241.0787,249.548 C259.2432,300.9509 258.5449,318.5879 247.765,372.0264 C246.2941,379.3145 243.5824,386.8998 240.685,393.6827 " fill="none" id="Allocated-&gt;MIN" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="239.214,396.9813,244.6551,392.0892,240.7295,393.5899,239.2288,389.6643,239.214,396.9813" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="82.4645" x="256.1378" y="308.6996">records low watermark</text><!--MD5=[1fa23b8554d20d5dd3f2f8930c0e2df3]
link Fragmented to MIN--><path d="M172.2766,328.3871 C178.8143,341.366 187.6105,357.9332 196.5033,372.0264 C201.2283,379.5151 206.8225,387.3752 212.0378,394.3513 " fill="none" id="Fragmented-&gt;MIN" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="214.2072,397.2338,212.5727,390.1018,211.9784,394.2621,207.818,393.6678,214.2072,397.2338" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="46.8042" x="197.2462" y="364.3669">does not rise</text><!--MD5=[87522a40b34d64237ec6603d41372cd8]
link Coalesced to MIN--><path d="M108.0285,416.9213 C132.7679,416.9213 162.0242,416.9213 185.5972,416.9213 " fill="none" id="Coalesced-&gt;MIN" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><polygon fill="#8095A1" points="189.1038,416.9213,182.4175,413.9496,185.3892,416.9213,182.4175,419.893,189.1038,416.9213" style="stroke: #8095A1; stroke-width: 0.742923663722561;"/><text fill="#000000" font-family="Monospace" font-size="7.4292" lengthAdjust="spacingAndGlyphs" textLength="55.7193" x="121.2823" y="412.2335">history remains</text><!--MD5=[994b73c618d067de5faae1a7c19b4f86]
@startuml
scale 600 height
top to bottom direction
skinparam backgroundColor transparent
skinparam shadowing false
skinparam defaultFontName Monospace
skinparam defaultFontSize 10
skinparam stateBorderColor #2c7794
skinparam stateBackgroundColor #edf6fa
skinparam ArrowColor #8095a1
title A6 STATE — block state and heap statistics
[*] - -> Free : 01 one list node
Free - -> Allocated : 02 first-fit + split\ncurrent free decreases
Allocated - -> Fragmented : free A and C
Fragmented : 03 two free blocks
Fragmented : sum free > largest block
Fragmented - -> Coalesced : free B\naddress-order joins neighbours
Coalesced : 04 one free block
Coalesced : current free = initial free
Coalesced - -> OOMChecked : request > arena
OOMChecked : NULL + hook once
OOMChecked - -> [*]
state "05 minimum-ever" as MIN
Allocated -right-> MIN : records low watermark
Fragmented -right-> MIN : does not rise
Coalesced -right-> MIN : history remains
@enduml
<?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="600.2775px" preserveAspectRatio="none" style="width:321px;height:600px;" version="1.1" viewBox="0 0 321 600" width="321.3164px" zoomAndPan="magnify"><defs/><g><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="184.7569" x="70.8357" y="7.8065">A6 STATE — reusable states of the same RV32 arena</text><ellipse cx="193.155" cy="23.2954" fill="#000000" rx="7.3026" ry="7.3026" style="stroke: none; stroke-width: 0.7302646103274287;"/><rect fill="#EDF6FA" height="36.5132" rx="9.1283" ry="9.1283" style="stroke: #2C7794; stroke-width: 1.0953969154911432;" width="36.5132" x="174.8984" y="85.3679"/><line style="stroke: #2C7794; stroke-width: 1.0953969154911432;" x1="174.8984" x2="211.4116" y1="102.6168" y2="102.6168"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="15.3356" x="185.4872" y="96.8258">Free</text><rect fill="#EDF6FA" height="36.5132" rx="9.1283" ry="9.1283" style="stroke: #2C7794; stroke-width: 1.0953969154911432;" width="47.4672" x="169.4214" y="186.8747"/><line style="stroke: #2C7794; stroke-width: 1.0953969154911432;" x1="169.4214" x2="216.8886" y1="204.1235" y2="204.1235"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="32.8619" x="176.724" y="198.3325">Allocated</text><rect fill="#EDF6FA" height="44.4439" rx="9.1283" ry="9.1283" style="stroke: #2C7794; stroke-width: 1.0953969154911432;" width="99.316" x="93.1087" y="288.3815"/><line style="stroke: #2C7794; stroke-width: 1.0953969154911432;" x1="93.1087" x2="192.4247" y1="305.6303" y2="305.6303"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="42.3553" x="121.5891" y="299.8393">Fragmented</text><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="79.5988" x="96.7601" y="317.0882">03 E06 two free blocks</text><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="84.7107" x="96.7601" y="327.0344">sum free &gt; largest block</text><rect fill="#EDF6FA" height="44.4439" rx="9.1283" ry="9.1283" style="stroke: #2C7794; stroke-width: 1.0953969154911432;" width="102.9673" x="4.3816" y="397.8189"/><line style="stroke: #2C7794; stroke-width: 1.0953969154911432;" x1="4.3816" x2="107.3489" y1="415.0678" y2="415.0678"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="35.783" x="37.9738" y="409.2768">Coalesced</text><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="49.658" x="8.0329" y="426.5256">one free block</text><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="88.362" x="8.0329" y="436.4718">current = largest = initial</text><rect fill="#EDF6FA" height="36.5132" rx="9.1283" ry="9.1283" style="stroke: #2C7794; stroke-width: 1.0953969154911432;" width="96.3949" x="7.6678" y="497.0327"/><line style="stroke: #2C7794; stroke-width: 1.0953969154911432;" x1="7.6678" x2="104.0627" y1="514.2815" y2="514.2815"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="47.4672" x="32.1316" y="508.4905">OOMChecked</text><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="81.7896" x="11.3191" y="525.7394">NULL · hook=1 · PASS=1</text><ellipse cx="55.8652" cy="585.3947" fill="none" rx="7.3026" ry="7.3026" style="stroke: #000000; stroke-width: 0.7302646103274287;"/><ellipse cx="56.2304" cy="585.7598" fill="#000000" rx="4.3816" ry="4.3816" style="stroke: none; stroke-width: 0.7302646103274287;"/><rect fill="#EDF6FA" height="36.5132" rx="9.1283" ry="9.1283" style="stroke: #2C7794; stroke-width: 1.0953969154911432;" width="64.9936" x="188.4083" y="401.7843"/><line style="stroke: #2C7794; stroke-width: 1.0953969154911432;" x1="188.4083" x2="253.4018" y1="419.0331" y2="419.0331"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="50.3883" x="195.7109" y="413.2421">minimum-ever</text><!--MD5=[f16808fa220dde377303612249059854]
link *start to Free--><path d="M193.155,30.7514 C193.155,41.647 193.155,63.6352 193.155,80.4898 " fill="none" id="*start-&gt;Free" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="193.155,83.9877,196.076,77.4153,193.155,80.3364,190.2339,77.4153,193.155,83.9877" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="72.2962" x="193.8853" y="61.0428">01 E01 one list node</text><!--MD5=[19abaf48dc778410378e95e0d1bca006]
link Free to Allocated--><path d="M193.155,122.239 C193.155,138.9547 193.155,163.9809 193.155,182.0111 " fill="none" id="Free-&gt;Allocated" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="193.155,185.5675,196.076,178.9951,193.155,181.9162,190.2339,178.9951,193.155,185.5675" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="83.9804" x="193.8853" y="152.3259">02 E04 A+B+C allocated</text><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="67.9146" x="201.9182" y="162.2721">current free = 3936</text><!--MD5=[f6fa3e1917b73de38ea03346a6903b17]
link Allocated to Fragmented--><path d="M184.4941,223.7385 C176.4611,240.3228 164.4191,265.181 155.3346,283.9342 " fill="none" id="Allocated-&gt;Fragmented" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="153.8083,287.0889,159.2954,282.4391,155.3952,283.8004,154.0338,279.9002,153.8083,287.0889" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="35.783" x="174.6866" y="253.8327">E05 free A</text><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="35.783" x="174.6866" y="263.7789">E06 free C</text><!--MD5=[c73bca393b062d6a86dff80fa900c78c]
link Fragmented to Coalesced--><path d="M92.7509,329.6414 C81.6363,335.9582 71.0474,344.1883 63.8982,354.7333 C56.391,365.8114 54.1053,380.4606 53.8278,393.0065 " fill="none" id="Fragmented-&gt;Coalesced" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="53.8132,396.4241,56.753,389.8601,53.8236,392.7728,50.9109,389.8434,53.8132,396.4241" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="47.4672" x="87.2666" y="363.2701">04 E07 free B</text><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="92.7436" x="64.6284" y="373.2163">merge previous, then next</text><!--MD5=[2b306524d92469efb3bb270d490680cf]
link Coalesced to OOMChecked--><path d="M55.8652,442.5257 C55.8652,457.3647 55.8652,476.9796 55.8652,491.9939 " fill="none" id="Coalesced-&gt;OOMChecked" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="55.8652,495.5941,58.7863,489.0217,55.8652,491.9427,52.9442,489.0217,55.8652,495.5941" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="82.5199" x="56.5955" y="472.7076">05 E08 request &gt; arena</text><!--MD5=[6b8be85e17f6174335a5329fe1414850]
link OOMChecked to *end--><path d="M55.8652,533.6993 C55.8652,546.2379 55.8652,562.6835 55.8652,573.4622 " fill="none" id="OOMChecked-&gt;*end" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="55.8652,576.8725,58.7863,570.3001,55.8652,573.2212,52.9442,570.3001,55.8652,576.8725" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><!--MD5=[b09143a670c8c67aa163b99fca5c6b6b]
link Allocated to MIN--><path d="M206.402,223.6581 C210.5791,230.1502 214.7489,237.7595 217.2537,245.2959 C235.6199,300.555 231.8517,317.8477 227.4774,375.911 C226.9589,382.7609 225.995,390.1731 224.958,396.8988 " fill="none" id="Allocated-&gt;MIN" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="224.403,400.3384,228.3223,394.3078,224.9778,396.7326,222.5531,393.3881,224.403,400.3384" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="81.0594" x="231.8006" y="313.6632">records low watermark</text><!--MD5=[1fa23b8554d20d5dd3f2f8930c0e2df3]
link Fragmented to MIN--><path d="M152.2237,332.9422 C158.409,345.9702 167.1649,362.5618 177.0892,375.911 C182.9094,383.7394 190.1317,391.4875 197.0254,398.2279 " fill="none" id="Fragmented-&gt;MIN" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="199.5813,400.6889,196.8641,394.0296,196.9477,398.1598,192.8176,398.2434,199.5813,400.6889" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="46.0067" x="177.8194" y="368.382">does not rise</text><!--MD5=[87522a40b34d64237ec6603d41372cd8]
link Coalesced to MIN--><path d="M107.6337,420.0409 C132.2582,420.0409 161.1402,420.0409 183.5812,420.0409 " fill="none" id="Coalesced-&gt;MIN" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><polygon fill="#8095A1" points="187.1595,420.0409,180.5871,417.1198,183.5082,420.0409,180.5871,422.962,187.1595,420.0409" style="stroke: #8095A1; stroke-width: 0.7302646103274287;"/><text fill="#000000" font-family="Monospace" font-size="7.3026" lengthAdjust="spacingAndGlyphs" textLength="54.7698" x="120.4937" y="415.4329">history remains</text><!--MD5=[ca62bd85e5915d2f6639cfa0fa77f8b6]
@startuml
scale 600 height
top to bottom direction
skinparam backgroundColor transparent
skinparam shadowing false
skinparam defaultFontName Monospace
skinparam defaultFontSize 10
skinparam stateBorderColor #2c7794
skinparam stateBackgroundColor #edf6fa
skinparam ArrowColor #8095a1
title A6 STATE — reusable states of the same RV32 arena
[*] - -> Free : 01 E01 one list node
Free - -> Allocated : 02 E04 A+B+C allocated\ncurrent free = 3936
Allocated - -> Fragmented : E05 free A\nE06 free C
Fragmented : 03 E06 two free blocks
Fragmented : sum free > largest block
Fragmented - -> Coalesced : 04 E07 free B\nmerge previous, then next
Coalesced : one free block
Coalesced : current = largest = initial
Coalesced - -> OOMChecked : 05 E08 request > arena
OOMChecked : NULL · hook=1 · PASS=1
OOMChecked - -> [*]
state "minimum-ever" as MIN
Allocated -right-> MIN : records low watermark
Fragmented -right-> MIN : does not rise
Coalesced -right-> MIN : history remains
@enduml
PlantUML version 1.2020.02(Sun Mar 01 11:22:07 CET 2020)
(GPL source distribution)
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