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26 lines
996 B
TeX
26 lines
996 B
TeX
%\pagebreak
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\section{\kcode{critical} Construct}
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\label{sec:critical}
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\index{constructs!critical@\kcode{critical}}
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\index{critical construct@\kcode{critical} construct}
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\index{critical construct@\kcode{critical} construct!hint clause@\kcode{hint} clause}
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\index{clauses!hint@\kcode{hint}}
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\index{hint clause@\kcode{hint} clause}
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The following example includes several \kcode{critical} constructs. The example
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illustrates a queuing model in which a task is dequeued and worked on. To guard
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against multiple threads dequeuing the same task, the dequeuing operation must
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be in a \kcode{critical} region. Because the two queues in this example are independent,
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they are protected by \kcode{critical} constructs with different names, \ucode{xaxis}
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and \ucode{yaxis}.
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\cexample{critical}{1}
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\fexample{critical}{1}
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The following example extends the previous example by adding the \kcode{hint} clause to the \kcode{critical} constructs.
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\cexample[5.0]{critical}{2}
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\fexample[5.0]{critical}{2}
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