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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.io.*; |
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import java.math.*; |
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import java.util.*; |
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/** |
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* A micro-benchmark with key types and operation mixes roughly |
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public class MapMicroBenchmark { |
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static final String wordFile = "testwords.txt"; |
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static Class mapClass; |
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static Class<?> mapClass; |
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static boolean randomSearches = true; |
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// Nanoseconds per run |
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jobs[2] = new Job("Integer ", is, Integer.class); |
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Object[] ls = new Object[n]; |
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for (int i = 0; i < n; i++) ls[i] = Long.valueOf((long)i); |
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for (int i = 0; i < n; i++) ls[i] = Long.valueOf((long) i); |
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jobs[3] = new Job("Long ", ls, Long.class); |
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Object[] fs = new Object[n]; |
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for (int i = 0; i < n; i++) fs[i] = Float.valueOf((float)i); |
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for (int i = 0; i < n; i++) fs[i] = Float.valueOf((float) i); |
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jobs[4] = new Job("Float ", fs, Float.class); |
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Object[] ds = new Object[n]; |
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for (int i = 0; i < n; i++) ds[i] = Double.valueOf((double)i); |
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for (int i = 0; i < n; i++) ds[i] = Double.valueOf((double) i); |
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jobs[5] = new Job("Double ", ds, Double.class); |
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Object[] bs = new Object[n]; |
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warmup1(mixed); |
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warmup3(jobs); |
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Thread.sleep(500); |
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time(jobs); |
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time(jobs); |
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} |
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static void runWork(Job[] jobs, int minIters, int maxIters, long timeLimit) throws Throwable { |
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for (int k = 0; k < nsizes; ++k) { |
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for (int k = 0; k < nsizes; ++k) { |
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int len = sizes[k]; |
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for (int i = 0; i < jobs.length; i++) { |
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Thread.sleep(50); |
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// First warmup -- run only mixed job to discourage type specialization |
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static void warmup1(Job job) throws Throwable { |
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for (int k = 0; k < nsizes; ++k) |
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for (int k = 0; k < nsizes; ++k) |
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job.work(sizes[k], 1, 1, 0); |
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} |
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long[] aves = new long[nsizes]; |
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int njobs = jobs.length; |
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for (int i = 0; i < njobs; i++) { |
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for (int i = 0; i < njobs; i++) { |
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System.out.print(jobs[i].name); |
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for (int k = 0; k < nsizes; ++k) { |
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long nanos = jobs[i].nanos[k]; |
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static final class Job { |
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final String name; |
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final Class elementClass; |
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final String name; |
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final Class<?> elementClass; |
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long[] nanos = new long[nsizes]; |
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final Object[] items; |
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Object[] searches; |
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volatile long checkSum; |
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volatile int lastSum; |
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Job(String name, Object[] items, Class elementClass) { |
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Job(String name, Object[] items, Class<?> elementClass) { |
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this.name = name; |
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this.items = items; |
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this.elementClass = elementClass; |
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if (m.put(x, x) == null) |
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++sum; |
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} |
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/* // uncomment to avoid calling clear() |
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for (int i = 0; i < len; ++i) { |
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Object x = keys[i]; |
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m.remove(x); |
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} |
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*/ |
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m.clear(); |
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sum += len - (quarter * 2); |
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checkSum += sum ^ (sum << 12); |
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if (minIters != 1 && randomSearches) |
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shuffleSome(ins, len, len >>> 3); |
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} |
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long ops = ((long)j) * len * OPS_PER_ITER; |
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long ops = ((long) j) * len * OPS_PER_ITER; |
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lastSum = sum; |
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return elapsed / ops; |
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} |
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// plain array shuffle |
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static void shuffle(Object[] a, int size) { |
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for (int i= size; i>1; i--) { |
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for (int i = size; i > 1; i--) { |
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Object t = a[i-1]; |
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int r = rng.nextInt(i); |
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a[i-1] = a[r]; |
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BufferedInputStream in = new BufferedInputStream(fr); |
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int k = 0; |
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outer:while (k < n) { |
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outer: while (k < n) { |
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StringBuffer sb = new StringBuffer(); |
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for (;;) { |
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int c = in.read(); |
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if (c < 0) |
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break outer; |
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char ch = (char)c; |
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char ch = (char) c; |
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if (ch == '\n') { |
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keys[k++] = sb.toString(); |
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break; |