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< title > Logtalk built-in predicate: threaded_exit/1< / title >
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< div class = "top-right" > Built-in predicate: threaded_exit/1< / div >
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< div class = "navtop" > < a href = "../../index.html" > contents< / a > > < a href = "../index.html" > reference manual< / a > > < a href = "../index.html#builtins" > built-in predicates< / a > < / div >
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< h2 id = "builtins_threaded_exit1" class = "codenp" > threaded_exit/1< / h2 >
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< h4 > Description< / h4 >
< pre > threaded_exit(Goal)< / pre >
< 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 >
< h4 > Template and modes< / h4 >
< pre > threaded_exit(+callable)< / pre >
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< h4 > Errors< / h4 >
< dl >
< dt > Goal is a variable:< / dt >
< dd > < code > instantiation_error< / code > < / dd >
< dt > Goal is neither a variable nor a callable term:< / dt >
< dd > < code > type_error(callable, Goal)< / code > < / dd >
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< dt > no thread is running for proving Goal:< / dt >
< dd > < code > existence_error(goal_thread, Goal)< / code > < / dd >
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< / dl >
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< h4 > Examples< / h4 >
< 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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< span > Last updated on: May 29, 2007< / span >
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