urtware / doc / activitydiagrams / service / urtServiceDispatch.svg @ 17d978fe
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1 | 2d315870 | Thomas Schöpping | <?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="983px" preserveAspectRatio="none" style="width:1463px;height:983px;" version="1.1" viewBox="0 0 1463 983" width="1463px" zoomAndPan="magnify"><defs><filter height="300%" id="f10elgj1fk1eyi" 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="686.25" y="26.708">µRtWare</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="181" x="640.25" y="47.6611">urtServiceDispatch()</text><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="0" x="733.75" y="68.6143"/><path d="M581.25,72.8594 L581.25,274.4531 L901.25,274.4531 L901.25,82.8594 L891.25,72.8594 L581.25,72.8594 " fill="#FBFB77" filter="url(#f10elgj1fk1eyi)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M891.25,72.8594 L891.25,82.8594 L901.25,82.8594 L891.25,72.8594 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="581.25" x2="660.75" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="664.75" y="89.4263"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="52" x="664.75" y="89.4263">service</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="97" x="720.75" y="89.4263">: urt_service_t*</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="821.75" x2="901.25" y1="85.4258" y2="85.4258"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="237" x="587.25" y="105.0591">The service to dispatch a request for.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="76" x="587.25" y="120.1919">Must not be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="667.25" y="120.1919">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="4" x="699.25" y="120.1919">.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="581.25" x2="685.25" y1="130.8242" y2="130.8242"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="689.25" y="134.8247"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="59" x="689.25" y="134.8247">payload</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="41" x="752.25" y="134.8247">: void*</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="797.25" x2="901.25" y1="130.8242" y2="130.8242"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="272" x="587.25" y="150.4575">Pointer where to store the payload (if any).</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="46" x="587.25" y="165.5903">May be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="637.25" y="165.5903">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="213" x="673.25" y="165.5903">if the service expects no payload.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="581.25" x2="692.25" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="696.25" y="180.2231"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="41" x="696.25" y="180.2231">bytes</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="45" x="741.25" y="180.2231">: size_t</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="790.25" x2="901.25" y1="176.2227" y2="176.2227"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="180" x="587.25" y="195.856">Size of the payload in bytes.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="280" x="587.25" y="210.9888">Must be 0 if the service expects no payload.</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="581.25" x2="901.25" y1="219.0547" y2="219.0547"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="581.25" x2="901.25" y1="221.0547" y2="221.0547"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="581.25" x2="646.75" y1="231.6211" y2="231.6211"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="0" x="650.75" y="235.6216"/><text fill="#000000" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="45" x="650.75" y="235.6216">return</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="132" x="699.75" y="235.6216">: urt_baserequest_t*</text><line style="stroke: #A80036; stroke-width: 1.0;" x1="835.75" x2="901.25" y1="231.6211" y2="231.6211"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="283" x="587.25" y="251.2544">Pointer to the request to be processed next.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="46" x="587.25" y="266.3872">May be</text><text fill="#000000" font-family="monospace" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="637.25" y="266.3872">NULL</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="209" x="673.25" y="266.3872">if there are no pending requests.</text><ellipse cx="741.25" cy="304.4531" fill="#000000" filter="url(#f10elgj1fk1eyi)" rx="10" ry="10" style="stroke: none; stroke-width: 1.0;"/><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="93" x="694.75" y="334.4531"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="73" x="704.75" y="355.5918">lock service</text><path d="M17.75,434.1323 L17.75,489.5308 A0,0 0 0 0 17.75,489.5308 L578.75,489.5308 A0,0 0 0 0 578.75,489.5308 L578.75,465.8315 L598.75,461.8315 L578.75,457.8315 L578.75,444.1323 L568.75,434.1323 L17.75,434.1323 A0,0 0 0 0 17.75,434.1323 " fill="#FBFB77" filter="url(#f10elgj1fk1eyi)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M568.75,434.1323 L568.75,444.1323 L578.75,444.1323 L568.75,434.1323 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="414" x="23.75" y="451.1992">No need to lock the request because it is enqueued at this point.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="531" x="23.75" y="466.332">Enqueued requests must not be altered without the according service to be locked.</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="540" x="23.75" y="481.4648">Since the service has been locked, no enqueued requests will be modified externally.</text><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="285" x="598.75" y="444.8472"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="134" x="608.75" y="465.9858">access first request (</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="126" x="742.75" y="465.9858">requestQueue_front</text><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="5" x="868.75" y="465.9858">)</text><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="251" x="615.75" y="509.5308"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="52" x="625.75" y="530.6694">proceed</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="126" x="681.75" y="530.6694">requestQueue_front</text><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="45" x="811.75" y="530.6694">pointer</text><rect fill="#000000" filter="url(#f10elgj1fk1eyi)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="1417.5" x="10" y="563.4995"/><polygon fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" points="162,610.9019,447,610.9019,459,622.9019,447,634.9019,162,634.9019,150,622.9019,162,610.9019" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="243" x="162" y="626.71">This was the last request (pointer became</text><text fill="#000000" font-family="monospace" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="28" x="409" y="626.71">NULL</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="10" x="437" y="626.71">)?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="130" y="620.3076">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="459" y="620.3076">no</text><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="212" x="34" y="644.9019"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="20" x="44" y="666.0405">set</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="119" x="68" y="666.0405">requestQueue_back</text><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="13" x="191" y="666.0405">to</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="28" x="208" y="666.0405">NULL</text><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="223" x="357.5" y="644.9019"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="73" x="367.5" y="666.0405">set request</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="28" x="444.5" y="666.0405">next</text><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="62" x="476.5" y="666.0405">pointer to</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="28" x="542.5" y="666.0405">NULL</text><polygon fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" points="304.5,684.8706,316.5,696.8706,304.5,708.8706,292.5,696.8706,304.5,684.8706" style="stroke: #A80036; stroke-width: 1.5;"/><polygon fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" points="646,589.4995,824,589.4995,836,601.4995,824,613.4995,646,613.4995,634,601.4995,646,589.4995" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="739" y="623.71">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="178" x="646" y="605.3076">This was the last HRT request?</text><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="233" x="618.5" y="646.3042"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="20" x="628.5" y="667.4429">set</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="140" x="652.5" y="667.4429">requestQueue_hrtBack</text><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="13" x="796.5" y="667.4429">to</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="28" x="813.5" y="667.4429">NULL</text><polygon fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" points="890.5,589.4995,1092.5,589.4995,1104.5,601.4995,1092.5,613.4995,890.5,613.4995,878.5,601.4995,890.5,589.4995" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="995.5" y="623.71">yes</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="202" x="890.5" y="605.3076">This was the last FRT/SRT request?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="1104.5" y="598.9053">no</text><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="240" x="871.5" y="646.3042"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="20" x="881.5" y="667.4429">set</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="147" x="905.5" y="667.4429">requestQueue_fsrtBack</text><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="13" x="1056.5" y="667.4429">to</text><text fill="#000000" font-family="monospace" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="28" x="1073.5" y="667.4429">NULL</text><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="269" x="1146.5" y="642.9019"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="249" x="1156.5" y="664.0405">copy payload from request to argument</text><rect fill="#000000" filter="url(#f10elgj1fk1eyi)" height="6" rx="2.5" ry="2.5" style="stroke: #000000; stroke-width: 1.0;" width="1417.5" x="10" y="748.8706"/><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; stroke-width: 1.5;" width="109" x="686.75" y="774.8706"/><text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="89" x="696.75" y="796.0093">unlock service</text><path d="M418.25,827.2729 L418.25,852.4058 A0,0 0 0 0 418.25,852.4058 L710.25,852.4058 A0,0 0 0 0 710.25,852.4058 L710.25,845.2729 L730.25,839.8394 L710.25,837.2729 L710.25,837.2729 L700.25,827.2729 L418.25,827.2729 A0,0 0 0 0 418.25,827.2729 " fill="#FBFB77" filter="url(#f10elgj1fk1eyi)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M700.25,827.2729 L700.25,837.2729 L710.25,837.2729 L700.25,827.2729 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="271" x="424.25" y="844.3398">Returns pointer to the dispatched request.</text><ellipse cx="741.25" cy="839.8394" fill="#FFFFFF" filter="url(#f10elgj1fk1eyi)" rx="11" ry="11" style="stroke: #000000; stroke-width: 1.0;"/><ellipse cx="741.25" cy="839.8394" fill="#000000" rx="6" ry="6" style="stroke: #7F7F7F; stroke-width: 1.0;"/><polygon fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" points="685.25,388.4219,797.25,388.4219,809.25,400.4219,797.25,412.4219,685.25,412.4219,673.25,400.4219,685.25,388.4219" style="stroke: #A80036; stroke-width: 1.5;"/><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="14" x="745.25" y="422.6323">no</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="112" x="685.25" y="404.23">Request list empty?</text><text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="20" x="809.25" y="397.8276">yes</text><rect fill="#FEFECE" filter="url(#f10elgj1fk1eyi)" height="33.9688" rx="12.5" ry="12.5" style="stroke: #A80036; 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2 | @startuml |
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3 | |||
4 | title **µRtWare**\nurtServiceDispatch()\n |
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5 | |||
6 | |||
7 | note |
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8 | - - **service** : urt_service_t* - - |
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9 | The service to dispatch a request for. |
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10 | Must not be ""NULL"". |
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11 | - - **payload** : void* - - |
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12 | Pointer where to store the payload (if any). |
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13 | May be ""NULL"" if the service expects no payload. |
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14 | - - **bytes** : size_t - - |
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15 | Size of the payload in bytes. |
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16 | Must be 0 if the service expects no payload. |
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17 | ==== |
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18 | - - **return** : urt_baserequest_t* - - |
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19 | Pointer to the request to be processed next. |
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20 | May be ""NULL"" if there are no pending requests. |
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21 | endnote |
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22 | |||
23 | |||
24 | start |
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25 | :lock service; |
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26 | if (Request list empty?) then (no) |
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27 | :access first request (""requestQueue_front""); |
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28 | note |
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29 | No need to lock the request because it is enqueued at this point. |
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30 | Enqueued requests must not be altered without the according service to be locked. |
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31 | Since the service has been locked, no enqueued requests will be modified externally. |
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32 | endnote |
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33 | :proceed ""requestQueue_front"" pointer; |
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34 | fork |
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35 | if (This was the last request (pointer became ""NULL"")?) then (yes) |
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36 | :set ""requestQueue_back"" to ""NULL""; |
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37 | else (no) |
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38 | :set request ""next"" pointer to ""NULL""; |
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39 | endif |
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40 | fork again |
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41 | if (This was the last HRT request?) then (yes) |
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42 | :set ""requestQueue_hrtBack"" to ""NULL""; |
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43 | elseif (This was the last FRT/SRT request?) then (yes) |
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44 | :set ""requestQueue_fsrtBack"" to ""NULL""; |
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45 | else (no) |
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46 | endif |
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47 | fork again |
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48 | :copy payload from request to argument; |
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49 | endfork |
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50 | :unlock service; |
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51 | stop |
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52 | note |
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53 | Returns pointer to the dispatched request. |
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54 | endnote |
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55 | else (yes) |
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56 | endif |
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57 | :unlock service; |
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58 | stop |
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59 | note |
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60 | Returns ""NULL"". |
||
61 | endnote |
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62 | |||
63 | |||
64 | @enduml |
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65 | |||
66 | PlantUML version 1.2020.00(Sat Jan 11 13:30:53 CET 2020) |
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67 | (GPL source distribution) |
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68 | Java Runtime: OpenJDK Runtime Environment |
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69 | JVM: OpenJDK 64-Bit Server VM |
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70 | Java Version: 11.0.7+10-post-Ubuntu-2ubuntu218.04 |
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71 | Operating System: Linux |
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72 | Default Encoding: UTF-8 |
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73 | Language: en |
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74 | Country: US |
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75 | --></g></svg> |