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<a name="Pragma-All_005fCalls_005fRemote"></a>
<div class="header">
<p>
Next: <a href="Generic-Categorized-Units.html#Generic-Categorized-Units" accesskey="n" rel="next">Generic Categorized Units</a>, Previous: <a href="Pragma-Asynchronous.html#Pragma-Asynchronous" accesskey="p" rel="prev">Pragma Asynchronous</a>, Up: <a href="More-About-Categorization-Pragmas.html#More-About-Categorization-Pragmas" accesskey="u" rel="up">More About Categorization Pragmas</a> &nbsp; [<a href="About-This-Guide.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Pragma-All_005fCalls_005fRemote-1"></a>
<h4 class="subsubsection">8.1.7.5 Pragma All_Calls_Remote</h4>

<p>A pragma All_Calls_Remote in a RCI unit forces remote procedure
calls to be routed through the communication subsystem even for a local
call. This eases the debugging of an application in a non-distributed
situation that is very close to the distributed one, because the communication
subsystem (including marshalling and unmarshalling procedures) can be
exercised on a single node.
</p>
<p>In some circumstances, a non-distributed application can behave
differently from an application distributed on only one partition. This
can happen when both All_Calls_Remote and Asynchronous features are used
at the same time (see <a href="Pragma-Asynchronous.html#Pragma-Asynchronous">Pragma Asynchronous</a> for an example). Another
circumstance occurs when the marshalling operations raise an
exception. In the following example, when unit ACRRCI is a
All_Calls_Remote package, the program raises Program_Error. When
unit ACRRCI is no longer a All_Calls_Remote package, then the program
completes silently.
</p>
<div class="smallexample">
<pre class="smallexample">

<b>with</b> Ada.Streams; <b>use</b> Ada.Streams;
<b>package</b> ACRRT <b>is</b>
   <b>pragma</b> Remote_Types;
   <b>type</b> T <b>is</b> <b>private</b>;
<b>private</b>
   --  implementation removed
<b>end</b> ACRRT;

</pre></div>
<div class="smallexample">
<pre class="smallexample">

<b>package</b> <b>body</b> ACRRT <b>is</b>
   <b>procedure</b> Read
     (S : <b>access</b> Root_Stream_Type'Class;
      X : <b>out</b> T) <b>is</b>
   <b>begin</b>
      <b>raise</b> Program_Error;
   <b>end</b> Read;

   <b>procedure</b> Write
     (S : <b>access</b> Root_Stream_Type'Class;
      X : <b>in</b> T) <b>is</b>
   <b>begin</b>
      <b>raise</b> Program_Error;
   <b>end</b> Write;
<b>end</b> ACRRT;

</pre></div>
<div class="smallexample">
<pre class="smallexample">

<b>with</b> ACRRT; <b>use</b> ACRRT;
<b>package</b> ACRRCI <b>is</b>
   <b>pragma</b> Remote_Call_Interface;
   <b>pragma</b> All_Calls_Remote;

   <b>procedure</b> P (X : T);
<b>end</b> ACRRCI;

</pre></div>
<div class="smallexample">
<pre class="smallexample">

<b>package</b> <b>body</b> ACRRCI <b>is</b>
   <b>procedure</b> P (X : T) <b>is</b>
   <b>begin</b>
      <b>null</b>;
   <b>end</b> P;
<b>end</b> ACRRCI;

</pre></div>
<div class="smallexample">
<pre class="smallexample">

<b>with</b> ACRRCI, ACRRT;
<b>procedure</b> ACRMain <b>is</b>
   X : ACRRT.T;
<b>begin</b>
   ACRRCI.P (X);
<b>end</b> ACRMain;

</pre></div>

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