<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd"
[
 <!ATTLIST svg
  xmlns:xlink CDATA #FIXED "http://www.w3.org/1999/xlink">
]>
<!-- Created with Sodipodi ("http://www.sodipodi.com/") -->
<svg
   id="svg548"
   sodipodi:version="0.32"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:xlink="http://www.w3.org/1999/xlink"
   width="210mm"
   height="297mm"
   sodipodi:docbase="/home/mcr70/projects/jiapi/docs"
   sodipodi:docname="/home/mcr70/projects/jiapi/docs/instrumentation.svg">
  <defs
     id="defs550" />
  <sodipodi:namedview
     id="base" />
  <g
     id="g593"
     transform="translate(-38.75000,-178.7500)">
    <rect
       style="font-size:12;fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.56764pt;"
       id="rect555"
       width="163.750000"
       height="62.500026"
       x="302.500000"
       y="297.362057" />
    <text
       style="font-size:12;font-weight:normal;stroke-width:1pt;font-family:helvetica;"
       x="317.500000"
       y="312.362183"
       id="text556">
      <tspan
         id="tspan557">
InstrumentationDescriptor</tspan>
    </text>
    <text
       style="font-size:12;font-weight:normal;stroke-width:1pt;font-family:helvetica;"
       x="336.250000"
       y="324.862152"
       id="text559">
      <tspan
         id="tspan560">
include: ...</tspan>
      <tspan
         sodipodi:role="line"
         id="tspan562"
         x="336.250000"
         y="336.862152">
exclude: ...</tspan>
      <tspan
         sodipodi:role="line"
         id="tspan591"
         x="336.250000"
         y="348.862152">
addInstrumentor()</tspan>
    </text>
  </g>
  <g
     id="g610"
     transform="translate(115.0000,86.24997)">
    <g
       id="g574">
      <rect
         style="font-size:12;fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.51993pt;"
         id="rect551"
         width="152.499998"
         height="86.249996"
         x="47.500000"
         y="132.362133" />
      <text
         style="fill:black;stroke:none;font-family:helvetica;font-style:normal;font-weight:normal;font-size:12px;fill-opacity:1;stroke-opacity:1;stroke-width:1pt;stroke-linejoin:miter;stroke-linecap:butt;"
         x="60.000000"
         y="149.862183"
         id="text552">
        <tspan
           id="tspan553">
InstrumentationContext</tspan>
      </text>
    </g>
    <text
       style="fill:black;stroke:none;font-family:helvetica;font-style:normal;font-weight:normal;font-size:12px;fill-opacity:1;stroke-opacity:1;stroke-width:1pt;stroke-linejoin:miter;stroke-linecap:butt;"
       x="85.000000"
       y="162.362183"
       id="text605">
      <tspan
         id="tspan606">
addDescriptor()</tspan>
      <tspan
         sodipodi:role="line"
         id="tspan608"
         x="85.0000000"
         y="174.362183">
instrument()</tspan>
    </text>
  </g>
  <text
     style="fill:black;stroke:none;font-family:helvetica;font-style:normal;font-weight:normal;font-size:12px;fill-opacity:1;stroke-opacity:1;stroke-width:1pt;stroke-linejoin:miter;stroke-linecap:butt;"
     x="461.250000"
     y="103.612091"
     id="text621">
    <tspan
       id="tspan622">
Intrumentation process:</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan624"
       x="461.250000"
       y="115.612091">
1) Create InstrumentingClassLoader</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan661"
       x="461.250000"
       y="127.612091">
Associate InstrumentationContext with it.</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan657"
       x="461.250000"
       y="139.612091">
</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan659"
       x="461.250000"
       y="151.612091">
2) add some descriptors to ctx, that define</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan626"
       x="461.250000"
       y="163.612091">
what is to be instrumented and how</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan628"
       x="461.250000"
       y="175.612091">
</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan630"
       x="461.250000"
       y="187.612091">
3) call ClassLoader.loadClass()</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan665"
       x="461.250000"
       y="199.612091">
This will try to load class, and call </tspan>
    <tspan
       sodipodi:role="line"
       id="tspan667"
       x="461.250000"
       y="211.612091">
ctx.instrument()</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan632"
       x="461.250000"
       y="223.612091">
This will loop through all the decriptors</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan634"
       x="461.250000"
       y="235.612091">
in order, and make a decision whether or </tspan>
    <tspan
       sodipodi:role="line"
       id="tspan636"
       x="461.250000"
       y="247.612091">
not a class is to be instrumented. If so,</tspan>
    <tspan
       sodipodi:role="line"
       id="tspan638"
       x="461.250000"
       y="259.612091">
instrument class with Instrumentor associated </tspan>
    <tspan
       sodipodi:role="line"
       id="tspan640"
       x="461.250000"
       y="271.612091">
with descriptor</tspan>
  </text>
  <g
     id="g649"
     transform="translate(-30.00000,2.499969)">
    <rect
       style="font-size:12;fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.849409pt;"
       id="rect642"
       width="167.500000"
       height="63.750000"
       x="71.250000"
       y="89.862122" />
    <text
       style="fill:black;stroke:none;font-family:helvetica;font-style:normal;font-weight:normal;font-size:12px;fill-opacity:1;stroke-opacity:1;stroke-width:1pt;stroke-linejoin:miter;stroke-linecap:butt;"
       x="83.7500000"
       y="106.112152"
       id="text643">
      <tspan
         id="tspan644">
InstrumentingClassLoader</tspan>
    </text>
    <text
       style="fill:black;stroke:none;font-family:helvetica;font-style:normal;font-weight:normal;font-size:12px;fill-opacity:1;stroke-opacity:1;stroke-width:1pt;stroke-linejoin:miter;stroke-linecap:butt;"
       x="108.750000"
       y="119.862183"
       id="text646">
      <tspan
         id="tspan647">
setContext()</tspan>
    </text>
  </g>
  <path
     style="fill:none;fill-rule:evenodd;stroke:black;stroke-opacity:1;stroke-width:1pt;stroke-linejoin:miter;stroke-linecap:butt;fill-opacity:1;"
     d="M 153.75 154.862 L 201.25 218.612 "
     id="path663" />
  <path
     style="fill:none;fill-rule:evenodd;stroke:black;stroke-opacity:1;stroke-width:1pt;stroke-linejoin:miter;stroke-linecap:butt;fill-opacity:1;"
     d="M 270 216.112 L 297.5 181.112 "
     id="path664" />
</svg>