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<title>10.3.3 Import and export lists  </title>

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<h3>
  <a name="1205831"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">10.3.3 	 Import and export lists</font>
</h3>


<p>
  <a name="1205829"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">This process can be carried out for several programs. For each program, its import list should be matched with the export lists of all other programs and the import list of all other programs should be matched with the its export list.</font>
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<p>
  <a name="1204770"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">When a program that has exported functions is no longer in use and has been unloaded it is important that the import and export lists are cleared of any redundant entries. This enables any further calls to the program that is no longer loaded to return correctly. Thus the <font size=2 face=Courier><strong>dl_reset_imports_from_exports</strong></font> function should be used whenever an RCU program is unloaded:</font>
</p>


<a name="1204771"> </a><font size=2 face=Courier><strong>dl_reset_imports_from_exports(dl_get_imports(), &amp;exports);<br></strong></font>



<p>
  <a name="1204772"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">Large import/export lists can be maintained using command language arrays.</font>
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<h5>
  <a name="1204773"> </a><i><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Example</font></i>
</h5>


<a name="1208448"> </a><font size=2 face=Courier><strong>numlibs = 34<br>libs[0] = "libfn0"<br>libs[1] = "libfn1"<br><font size=2 face=Courier><em>...</em></font> <br>libs[numlibs-1] = "libfn33"<br></strong></font>



<p>
  <a name="1204779"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">defines an array of 34 functions which can be exported using:</font>
</p>


<a name="1208453"> </a><font size=2 face=Courier><strong>for (i=0;i&lt;numlibs;i++) {<br>

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