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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.util.concurrent.locks.*; |
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import java.util.concurrent.atomic.*; |
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import java.util.Random; |
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import java.util.Queue; |
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public class UnboundedQueueFillEmptyLoops { |
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static int maxSize = 10000; |
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static Integer[] numbers; |
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public static void main(String[] args) throws Exception { |
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Class klass = null; |
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Class<?> klass = null; |
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if (args.length > 0) { |
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try { |
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klass = Class.forName(args[0]); |
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} catch(ClassNotFoundException e) { |
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} catch (ClassNotFoundException e) { |
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throw new RuntimeException("Class " + args[0] + " not found."); |
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} |
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} |
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oneRun(klass, maxSize); |
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if (total == 0) System.out.print(" "); |
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} |
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} |
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static void oneRun(Class klass, int n) throws Exception { |
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Queue<Integer> q = (Queue<Integer>)klass.newInstance(); |
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static void oneRun(Class<?> klass, int n) throws Exception { |
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Queue<Integer> q = |
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(Queue<Integer>) klass.getConstructor().newInstance(); |
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int sum = total; |
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int m = rng.nextInt(numbers.length); |
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long startTime = System.nanoTime(); |
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m = 0; |
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q.offer(numbers[m++]); |
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} |
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Integer p; |
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while ((p = q.poll()) != null) |
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for (Integer p; (p = q.poll()) != null; ) |
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sum += p.intValue(); |
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} |
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total += sum; |
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long endTime = System.nanoTime(); |
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long time = endTime - startTime; |
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double secs = (double)(time) / 1000000000.0; |
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double secs = (double) time / 1000000000.0; |
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System.out.println("Time: " + secs); |
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} |
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