40 lines
5.4 KiB
XML
40 lines
5.4 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="350px" preserveAspectRatio="none" style="width:492px;height:350px;" version="1.1" viewBox="0 0 492 350" width="492px" zoomAndPan="magnify"><defs/><g><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="440" x="29.5" y="12.0669">A8 PATTERNS — choose queue payload ownership explicitly</text><!--MD5=[d7735d92f2a41b821568342a009b1039]
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entity Value--><rect fill="#EDF6FA" height="65.3984" style="stroke: #2B6F8E; stroke-width: 1.5;" width="220" x="6" y="22.9328"/><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="128" x="16" y="44.9997">01 VALUE MESSAGE</text><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="200" x="16" y="60.1325">QueueMessage bytes copied</text><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="200" x="16" y="75.2653">producer may reuse source</text><!--MD5=[6da42ccc88702fc061c993ea5bf2f4d3]
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entity Pointer--><rect fill="#EDF6FA" height="65.3984" style="stroke: #2B6F8E; stroke-width: 1.5;" width="220" x="261" y="22.9328"/><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="144" x="271" y="44.9997">02 POINTER MESSAGE</text><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="152" x="271" y="60.1325">address copied only</text><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="200" x="271" y="75.2653">lifetime remains external</text><!--MD5=[50931bcefbe76bf129939bc87583de63]
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entity Contract--><rect fill="#EDF6FA" height="65.3984" style="stroke: #2B6F8E; stroke-width: 1.5;" width="220" x="133" y="148.3328"/><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="168" x="143" y="170.3997">03 OWNERSHIP CONTRACT</text><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="200" x="143" y="185.5325">who allocates? who frees?</text><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="160" x="143" y="200.6653">can producer mutate?</text><!--MD5=[df87d7b2fda1e21366f2ab2a052e296a]
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entity Decision--><rect fill="#EDF6FA" height="65.3984" style="stroke: #2B6F8E; stroke-width: 1.5;" width="244" x="121" y="273.7328"/><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="128" x="131" y="295.7997">04 FC05 DECISION</text><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="224" x="131" y="310.9325">small trivially copied value</text><text fill="#000000" font-family="DejaVu Sans Mono" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="200" x="131" y="326.0653">checksum proves integrity</text><!--MD5=[eed4c6828643997c2e6f18e5f23f3fe8]
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link Value to Contract--><path d="M149.04,88.7328 C166.38,105.5928 187.7,126.3028 205.64,143.7428 " fill="none" id="Value->Contract" style="stroke: #8295A0; stroke-width: 1.0;"/><polygon fill="#8295A0" points="209.04,147.0428,205.3748,137.9013,205.4548,143.5576,199.7985,143.6376,209.04,147.0428" style="stroke: #8295A0; stroke-width: 1.0;"/><!--MD5=[8a1b83c410d18f160d6a16e90925aced]
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link Pointer to Contract--><path d="M337.7,88.7328 C320.22,105.5928 298.74,126.3028 280.65,143.7428 " fill="none" id="Pointer->Contract" style="stroke: #8295A0; stroke-width: 1.0;"/><polygon fill="#8295A0" points="277.22,147.0428,286.4751,143.675,280.8192,143.5721,280.9221,137.9162,277.22,147.0428" style="stroke: #8295A0; stroke-width: 1.0;"/><!--MD5=[dbe67369ebacc32143fd98003c1002ec]
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link Contract to Decision--><path d="M243,214.1328 C243,230.4128 243,250.3028 243,267.3528 " fill="none" id="Contract->Decision" style="stroke: #8295A0; stroke-width: 1.0;"/><polygon fill="#8295A0" points="243,271.9828,247,262.9828,243,266.9828,239,262.9828,243,271.9828" style="stroke: #8295A0; stroke-width: 1.0;"/><!--MD5=[efb38cd3635009407a4569b7b513b9e1]
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@startuml
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scale max 900*520
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skinparam backgroundColor transparent
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skinparam shadowing false
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skinparam defaultFontName "DejaVu Sans Mono"
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skinparam defaultFontSize 13
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skinparam rectangleBorderColor #2b6f8e
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skinparam rectangleBackgroundColor #edf6fa
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skinparam ArrowColor #8295a0
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top to bottom direction
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title A8 PATTERNS — choose queue payload ownership explicitly
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rectangle "01 VALUE MESSAGE\nQueueMessage bytes copied\nproducer may reuse source" as Value
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rectangle "02 POINTER MESSAGE\naddress copied only\nlifetime remains external" as Pointer
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rectangle "03 OWNERSHIP CONTRACT\nwho allocates? who frees?\ncan producer mutate?" as Contract
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rectangle "04 FC05 DECISION\nsmall trivially copied value\nchecksum proves integrity" as Decision
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Value - -> Contract
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Pointer - -> Contract
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Contract - -> Decision
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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> |
