user
50 lines
11 KiB
XML
50 lines
11 KiB
XML
<?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 > 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]
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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->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]
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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->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]
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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->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]
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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->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]
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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->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 > arena</text><!--MD5=[6b8be85e17f6174335a5329fe1414850]
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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->*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]
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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->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]
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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->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]
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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->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]
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@startuml
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scale 600 height
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top to bottom direction
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skinparam backgroundColor transparent
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skinparam shadowing false
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skinparam defaultFontName Monospace
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skinparam defaultFontSize 10
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skinparam stateBorderColor #2c7794
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skinparam stateBackgroundColor #edf6fa
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skinparam ArrowColor #8095a1
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title A6 STATE — block state and heap statistics
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[*] - -> Free : 01 one list node
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Free - -> Allocated : 02 first-fit + split\ncurrent free decreases
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Allocated - -> Fragmented : free A and C
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Fragmented : 03 two free blocks
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Fragmented : sum free > largest block
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Fragmented - -> Coalesced : free B\naddress-order joins neighbours
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Coalesced : 04 one free block
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Coalesced : current free = initial free
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Coalesced - -> OOMChecked : request > arena
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OOMChecked : NULL + hook once
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OOMChecked - -> [*]
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state "05 minimum-ever" as MIN
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Allocated -right-> MIN : records low watermark
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Fragmented -right-> MIN : does not rise
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Coalesced -right-> MIN : history remains
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@enduml
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PlantUML version 1.2020.02(Sun Mar 01 11:22:07 CET 2020)
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(GPL source distribution)
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Java Runtime: OpenJDK Runtime Environment
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JVM: OpenJDK 64-Bit Server VM
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Java Version: 25.0.4-ea+4-1-Debian
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Operating System: Linux
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Default Encoding: UTF-8
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Language: en
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Country: null
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--></g></svg> |