44 lines
8.0 KiB
XML
44 lines
8.0 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="529px" preserveAspectRatio="none" style="width:475px;height:529px;" version="1.1" viewBox="0 0 475 529" width="475px" zoomAndPan="magnify"><defs/><g><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="305" x="89" y="12.8281">A2 STRUCTURE — mutex, owner, wait list and resource</text><!--MD5=[a15aec3e997c0b90fdfa616e6e255e24]
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entity mutex--><rect fill="#EDF6FA" height="69.0323" style="stroke: #2C7794; stroke-width: 1.5;" width="145" x="6" y="171.5941"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="52" x="16" y="194.4222">01 Mutex</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="91" x="16" y="210.7663">QueueDefinition</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="125" x="16" y="227.1104">uxQueueType = mutex</text><!--MD5=[cce3472c5646352849134f9dadeb1b6a]
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entity low--><rect fill="#EDF6FA" height="69.0323" style="stroke: #2C7794; stroke-width: 1.5;" width="144" x="124.5" y="318.6241"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="65" x="134.5" y="341.4522">02 LowTask</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="80" x="134.5" y="357.7963">base priority 1</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="124" x="134.5" y="374.1404">effective priority 1 → 3</text><!--MD5=[14d0722cf5b909ee93912fd030bf9990]
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entity high--><rect fill="#EDF6FA" height="69.0323" style="stroke: #2C7794; stroke-width: 1.5;" width="118" x="172.5" y="24.5541"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="69" x="182.5" y="47.3822">03 HighTask</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="50" x="182.5" y="63.7263">priority 3</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="98" x="182.5" y="80.0704">blocked on mutex</text><!--MD5=[67463a8a93d235c1b9ef492366a72a88]
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entity medium--><rect fill="#EDF6FA" height="69.0323" style="stroke: #2C7794; stroke-width: 1.5;" width="132" x="185.5" y="171.5941"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="89" x="195.5" y="194.4222">04 MediumTask</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="50" x="195.5" y="210.7663">priority 2</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="112" x="195.5" y="227.1104">Ready, not executed</text><!--MD5=[9c9f7c63b55d39a846ab63348ec12139]
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entity resource--><rect fill="#EDF6FA" height="52.6882" style="stroke: #2C7794; stroke-width: 1.5;" width="124" x="228.5" y="465.6541"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="104" x="238.5" y="488.4822">05 protected value</text><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="30" x="238.5" y="504.8263">1 → 2</text><!--MD5=[158e2903b1020e11f99bcb9ea11d8868]
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link low to mutex--><path d="M124.1,329.8641 C104.98,320.3241 86.61,306.9941 75.5,288.6241 C68.13,276.4341 67.02,261.2341 68.38,247.2741 " fill="none" id="low->mutex" style="stroke: #8095A1; stroke-width: 1.0;"/><polygon fill="#8095A1" points="68.98,242.4641,63.9065,250.9057,68.3668,247.4264,71.8461,251.8867,68.98,242.4641" style="stroke: #8095A1; stroke-width: 1.0;"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="29" x="76.5" y="284.4522">owns</text><!--MD5=[8d649ca47fa06143feec8f30a0ad6d1f]
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link mutex to low--><path d="M106.17,241.1141 C123.77,262.7541 146.62,290.8341 164.93,313.3441 " fill="none" id="mutex->low" style="stroke: #8095A1; stroke-width: 1.0;"/><polygon fill="#8095A1" points="168.05,317.1741,165.462,307.6714,164.89,313.2992,159.2622,312.7273,168.05,317.1741" style="stroke: #8095A1; stroke-width: 1.0;"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="52" x="145.56" y="284.4522">inherits 3</text><!--MD5=[0cda02ad73f7217ff83b08c55d25c68b]
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link high to mutex--><path d="M195.63,94.0741 C172.61,115.9041 142.67,144.2741 118.83,166.8741 " fill="none" id="high->mutex" style="stroke: #8095A1; stroke-width: 1.0; stroke-dasharray: 7.0,7.0;"/><polygon fill="#8095A1" points="115.25,170.2741,124.532,166.9811,118.8771,166.8326,119.0256,161.1777,115.25,170.2741" style="stroke: #8095A1; stroke-width: 1.0;"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="73" x="165.16" y="137.4222">waits forever</text><!--MD5=[dcb993e83586dad779f044de8c3c68b5]
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link medium to low--><path d="M238.6,241.1141 C230.5,262.4741 220.02,290.1241 211.54,312.4941 " fill="none" id="medium->low" style="stroke: #8095A1; stroke-width: 1.0; stroke-dasharray: 7.0,7.0;"/><polygon fill="#8095A1" points="209.85,316.9341,216.7999,309.9557,211.6353,312.2637,209.3273,307.0991,209.85,316.9341" style="stroke: #8095A1; stroke-width: 1.0;"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="99" x="228.29" y="284.4522">cannot preempt 3</text><!--MD5=[3a9e305dea604aa08f760e06e749e231]
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link low to resource--><path d="M219.74,387.9741 C234.87,410.0041 254.47,438.5441 269.2,459.9941 " fill="none" id="low->resource" style="stroke: #8095A1; stroke-width: 1.0;"/><polygon fill="#8095A1" points="271.98,464.0341,270.1774,454.3516,269.1474,459.9139,263.5851,458.8839,271.98,464.0341" style="stroke: #8095A1; stroke-width: 1.0;"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="88" x="252.92" y="431.4822">guarded write 1</text><!--MD5=[1010f4c599cbe540e9eb0f4a1139d543]
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link high to resource--><path d="M274.65,93.9941 C296.71,113.9941 321.57,141.2941 334.5,171.5941 C380.63,279.7141 396.21,327.7841 349.5,435.6541 C345.43,445.0441 338.9,453.5741 331.64,460.9741 " fill="none" id="high->resource" style="stroke: #8095A1; stroke-width: 1.0;"/><polygon fill="#8095A1" points="328.12,464.3741,337.3615,460.9689,331.7052,460.8889,331.7852,455.2326,328.12,464.3741" style="stroke: #8095A1; stroke-width: 1.0;"/><text fill="#000000" font-family="Monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="88" x="375.57" y="284.4522">guarded write 2</text><!--MD5=[f0e877ce0d9c10f109572c3cca054c6b]
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@startuml
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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 12
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skinparam ArrowColor #8095a1
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skinparam rectangleBorderColor #2c7794
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skinparam rectangleBackgroundColor #edf6fa
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title A2 STRUCTURE — mutex, owner, wait list and resource
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rectangle "01 Mutex\nQueueDefinition\nuxQueueType = mutex" as mutex
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rectangle "02 LowTask\nbase priority 1\neffective priority 1 → 3" as low
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rectangle "03 HighTask\npriority 3\nblocked on mutex" as high
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rectangle "04 MediumTask\npriority 2\nReady, not executed" as medium
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rectangle "05 protected value\n1 → 2" as resource
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low - -> mutex : owns
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high ..> mutex : waits forever
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mutex - -> low : inherits 3
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medium ..> low : cannot preempt 3
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low - -> resource : guarded write 1
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high - -> resource : guarded write 2
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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> |
