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			71 lines
		
	
	
		
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| 	<title>Logtalk built-in predicate: threaded_exit/1</title>
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| <div class="top-left">Logtalk reference manual</div> 
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| <div class="top-right">Built-in predicate: threaded_exit/1</div>
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| 
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| <h2 id="builtins_threaded_exit1" class="codenp">threaded_exit/1</h2>
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| 
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| <h4>Description</h4>
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| 
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| <pre>threaded_exit(Goal)</pre>
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| <p>
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| Retrieve the result of proving <code>Goal</code> in a new thread. This predicate blocks execution until the reply is sent to the <em>this</em> message queue by the thread executing the goal. When there is no thread proving the goal, the predicate generates an exception. This predicate is non-deterministic, providing access to any alternative solutions of its argument.
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| </p>
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| 
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| <h4>Template and modes</h4>
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| 
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| <pre>threaded_exit(+callable)</pre>
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| 
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| <h4>Errors</h4>
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| 
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| <dl>
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| 	<dt>Goal is a variable:</dt>
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| 		<dd><code>instantiation_error</code></dd>
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| 	<dt>Goal is neither a variable nor a callable term:</dt>
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| 		<dd><code>type_error(callable, Goal)</code></dd>
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| 	<dt>no thread is running for proving Goal:</dt>
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| 		<dd><code>existence_error(goal_thread, Goal)</code></dd>
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| </dl>
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| 
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| <h4>Examples</h4>
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| 
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| <dl>
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| 	<dt>To retrieve an asynchronous goal proof result:</dt>
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| 		<dd><code>threaded_exit(Goal)</code></dd>
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| 	<dt>To retrieve an asynchronous message to <em>self</em> result:</dt>
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| 		<dd><code>threaded_exit(::Goal)</code></dd>
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| 	<dt>To retrieve an asynchronous message result:</dt>
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| 		<dd><code>threaded_exit(Object::Goal)</code></dd>
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| </dl>
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| 		<span>Copyright © <a href="mailto:pmoura@logtalk.org">Paulo Moura</a> — <a href="http://logtalk.org">Logtalk.org</a></span><br/>	
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| 		<span>Last updated on: May 29, 2007</span>
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