Package java.util

Examples of java.util.Random$RandomDoublesSpliterator

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    private static void runBenchmarkWithZipfDistributionSync(Status stat, FixedSegments pager, ConcurrentPluggableCache<Long, byte[]> cache, int capacity, int round, double percent, int scanLength, long[] dist) {
        boolean scanning = false;
        long scanCount = 0L;

        final Random rand = new Random();

        int scanned = 0, zipf = 0;
        long base = 0L;

        long mills1 = System.currentTimeMillis();
        long ops = 0L;
        long miss = 0L;

        final int limit = round - 1;
        for(int nth = 0, i = 0; !_stop; nth = (nth >= limit) ? 0 : nth + 1, i++) {
            final long key;
            if(scanning || scanLength != 0 && (i == scanLength && rand.nextDouble() < percent)) {
                if(++scanCount <= scanLength) {
                    if(!scanning) {
                        base = dist[nth];
                    }
                    key = base + scanCount;
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    private static void runBenchmarkWithZipfDistributionLongHashLock(Status stat, ILock lock, FixedSegments pager, LongHash<byte[]> hash, int capacity, int round, double percent, int scanLength, long[] dist) {
        boolean scanning = false;
        long scanCount = 0L;

        final Random rand = new Random();

        int scanned = 0, zipf = 0;
        long base = 0L;

        long mills1 = System.currentTimeMillis();
        long ops = 0L;
        long miss = 0L;

        final int limit = round - 1;
        for(int nth = 0, i = 0; !_stop; nth = (nth >= limit) ? 0 : nth + 1, i++) {
            final long key;
            if(scanning || scanLength != 0 && (i == scanLength && rand.nextDouble() < percent)) {
                if(++scanCount <= scanLength) {
                    if(!scanning) {
                        base = dist[nth];
                    }
                    key = base + scanCount;
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    private static void runBenchmarkWithZipfDistributionLongHashSync(Status stat, FixedSegments pager, LongHash<byte[]> hash, int capacity, int round, double percent, int scanLength, long[] dist) {
        boolean scanning = false;
        long scanCount = 0L;

        final Random rand = new Random();

        int scanned = 0, zipf = 0;
        long base = 0L;

        long mills1 = System.currentTimeMillis();
        long ops = 0L;
        long miss = 0L;

        final int limit = round - 1;
        for(int nth = 0, i = 0; !_stop; nth = (nth >= limit) ? 0 : nth + 1, i++) {
            final long key;
            if(scanning || scanLength != 0 && (i == scanLength && rand.nextDouble() < percent)) {
                if(++scanCount <= scanLength) {
                    if(!scanning) {
                        base = dist[nth];
                    }
                    key = base + scanCount;
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    }

    public void testRand1000() throws IOException {
        FastMultiByteArrayOutputStream out = new FastMultiByteArrayOutputStream(4096);
        DataOutputStream data = new DataOutputStream(out);
        Random rand = new Random(22222);
        for(int times = 0; times < 3; times++) {
            for(int i = 0; i < 1000; i++) {
                data.writeInt(rand.nextInt());
            }
            probe(out.toByteArray_clear());
        }
    }
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    }

    public void testRand10000() throws IOException {
        FastMultiByteArrayOutputStream out = new FastMultiByteArrayOutputStream(4096);
        DataOutputStream data = new DataOutputStream(out);
        Random rand = new Random(44444);
        for(int times = 0; times < 3; times++) {
            for(int i = 0; i < 10000; i++) {
                data.writeInt(rand.nextInt());
            }
            probe(out.toByteArray_clear());
        }
    }
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    }

    public void testRandGaussian10000() throws IOException {
        FastMultiByteArrayOutputStream out = new FastMultiByteArrayOutputStream(4096);
        DataOutputStream data = new DataOutputStream(out);
        Random rand = new Random(3333);
        for(int times = 0; times < 3; times++) {
            for(int i = 0; i < 10000; i++) {
                data.writeDouble(rand.nextGaussian());
            }
            probe(out.toByteArray_clear());
        }
    }
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    }

    public void testRand1000() throws IOException {
        FastMultiByteArrayOutputStream out = new FastMultiByteArrayOutputStream(4096);
        DataOutputStream data = new DataOutputStream(out);
        Random rand = new Random(22222);
        for(int times = 0; times < 3; times++) {
            for(int i = 0; i < 1000; i++) {
                data.writeInt(rand.nextInt());
            }
            probe(out.toByteArray_clear());
        }
    }
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    }

    public void testRandChars2000() throws IOException {
        FastMultiByteArrayOutputStream out = new FastMultiByteArrayOutputStream(4096);
        DataOutputStream data = new DataOutputStream(out);
        Random rand = new Random(22222);
        for(int times = 0; times < 10; times++) {
            for(int i = 0; i < 2048; i++) {
                data.writeChar(rand.nextInt());
            }
            probe(out.toByteArray_clear());
        }
    }
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    }

    public void testRandChars8K() throws IOException {
        FastMultiByteArrayOutputStream out = new FastMultiByteArrayOutputStream(4096);
        DataOutputStream data = new DataOutputStream(out);
        Random rand = new Random(22222);
        for(int times = 0; times < 10; times++) {
            for(int i = 0; i < 4096; i++) {
                data.writeChar(rand.nextInt());
            }
            probe(out.toByteArray_clear());
        }
    }
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    private static void runBenchmarkWithZipfDistributionLock(int thrdnum, Status stat, ILock lock, Segments pager, ConcurrentPluggableCache<Long, byte[]> cache, int capacity, int round, double percent, int scanLength, long[] dist) {
        boolean scanning = false;
        long scanCount = 0L;

        final Random rand = new Random(129);

        int scanned = 0, zipf = 0;
        long base = 0L;

        long mills1 = System.currentTimeMillis();
        long ops = 0L;
        long miss = 0L;
        int iocontention = 0;

        final int start = thrdnum * round;
        final int limit = start + round - 1;
        for(int nth = start, i = 0; !_stop; nth = (nth < limit) ? nth + 1 : start, i++) {
            final long key;
            if(scanning || scanLength != 0 && (i == scanLength && rand.nextDouble() < percent)) {
                if(++scanCount <= scanLength) {
                    if(!scanning) {
                        base = dist[nth];
                    }
                    key = base + scanCount;
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