Examples of ByteArrayTool

com.alexkasko.unsafe.bytearray.ByteArrayTool
Front-end class for operations over byte arrays. Default implementation uses {@code sun.misc.Unsafe}with {@code assert} boundary checks. To enable boundary check use {@code -ea} java switch,without boundary checks invalid input will crash (segfault) JVM. Fallback implementation uses standard byte array access and bit shifting. Unsafe implementation uses native endianness (LE on most platforms). Fallback implementation uses Little Endian byte order. @author alexkaskoDate: 12/11/12

Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool

     *
     * @param col collection for index access
     * @param comp comparator
     */
    OffHeapStructComparator(OffHeapStructCollection col, Comparator<OffHeapStructAccessor> comp) {
        ByteArrayTool bt = ByteArrayTool.get();
        this.ia1 = new OffHeapStructIndexAccessor(col);
        this.ia2 = new OffHeapStructIndexAccessor(col);
        this.baa1 = new OffHeapStructByteArrayAccessor(bt);
        this.baa2 = new OffHeapStructByteArrayAccessor(bt);
        this.comp = comp;

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool

//  private static final int LENGTH = 1000000;
    private static final int LENGTH = 10000;


    @Test
    public void testLong() {
        ByteArrayTool bt = ByteArrayTool.get();
        byte[] buf = new byte[8];
        OffHeapStructArray oha = null;
        try {
            oha = new OffHeapStructArray(LENGTH, 8);
            Random random = new Random(42);
            long[] arr = new long[LENGTH];
            long val4242 = -1;
            long val4243 = -1;
            for (int i = 0; i < LENGTH; i++) {
                long ra = random.nextInt();
                arr[i] = ra;
                bt.putLong(buf, 0, ra);
                oha.set(i, buf);
                if (4242 == i) val4242 = ra;
                if (4243 == i) val4243 = ra;
            }
//            System.out.println(Arrays.toString(arr));
            Arrays.sort(arr);
//            System.out.println(Arrays.toString(arr));
            Comparator<OffHeapStructAccessor> comp = new LongComp();
//            System.out.println(toLongList(oha));
            OffHeapStructSorter.sort(oha, comp);
//            System.out.println(toLongList(oha));
            OffHeapStructBinarySearchWithComparator searcher = new OffHeapStructBinarySearchWithComparator(oha, comp);
            long ind4242e = Arrays.binarySearch(arr, val4242);
            bt.putLong(buf, 0, val4242);
            long ind4242a = searcher.binarySearch(buf);
            long ind4243e = Arrays.binarySearch(arr, val4243);
            bt.putLong(buf, 0, val4243);
            long ind4243a = searcher.binarySearch(buf);
            assertEquals(ind4242e, ind4242a);
            assertEquals(ind4243e, ind4243a);
        } finally {
            OffHeapUtils.free(oha);

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool


    @Test
    public void testArray() {
        OffHeapStructArray arr = null;
        try {
            ByteArrayTool bat = ByteArrayTool.get();
            arr = new OffHeapStructArray(3, 8);
            byte[] buf42 = new byte[8];
            bat.putInt(buf42, 0, 42);
            arr.set(0, buf42);
            byte[] buf43 = new byte[8];
            bat.putInt(buf43, 0, 43);
            arr.set(1, buf43);
            byte[] buf44 = new byte[8];
            bat.putInt(buf44, 0, 44);
            arr.set(2, buf44);


            Iterator<byte[]> iter = arr.iterator();
            assertTrue(iter.hasNext());
            assertArrayEquals("Contents fail", buf42, iter.next());

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool


    @Test
    public void testArrayList() {
        OffHeapStructArrayList list = null;
        try {
            ByteArrayTool bat = ByteArrayTool.get();
            list = new OffHeapStructArrayList(8);
            byte[] buf = new byte[8];
            for (int i = 0; i < 42; i++) {
                bat.putLong(buf, 0, i);
                list.add(buf);
            }
            bat.putLong(buf, 0, 1L << 42);
            list.add(buf);


            Iterator<byte[]> iter = list.iterator();
            // next values must be ignored by iterator
            list.add(buf);
            list.add(buf);
            list.add(buf);
            list.get(0, buf);
            assertEquals("Payload fail", 0, bat.getLong(buf, 0));
            list.get(41, buf);
            assertEquals("Payload fail", 41, bat.getLong(buf, 0));
            list.get(42, buf);
            assertEquals("Payload fail", 1L << 42, bat.getLong(buf, 0));
        } finally {
            free(list);
        }
    }

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool

//    private static final int LENGTH = 1000000;
    private static final int LENGTH = 10000;


    @Test
    public void testLong() {
        ByteArrayTool bat = ByteArrayTool.get();
        byte[] buf = new byte[8];
        OffHeapStructArray oha = null;
        try {
            oha = new OffHeapStructArray(LENGTH, 8);
            Random random = new Random(42);
            long[] arr = new long[LENGTH];
            long val4242 = -1;
            long val4243 = -1;
            for (int i = 0; i < LENGTH; i++) {
                long ra = random.nextLong();
                arr[i] = ra;
                bat.putLong(buf, 0, ra);
                oha.set(i, buf);
                if (4242 == i) val4242 = ra;
                if (4243 == i) val4243 = ra;
            }
            Arrays.sort(arr);

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool

        }
    }


    @Test
    public void testLongRange() {
        ByteArrayTool bat = ByteArrayTool.get();
        byte[] buf = new byte[8];
        OffHeapStructArray oha = null;
        try {
            oha = new OffHeapStructArray(6, 8);
            bat.putLong(buf, 0, 41);
            oha.set(0, buf);
            bat.putLong(buf, 0, 41);
            oha.set(1, buf);
            bat.putLong(buf, 0, 42);
            oha.set(2, buf);
            bat.putLong(buf, 0, 42);
            oha.set(3, buf);
            bat.putLong(buf, 0, 42);
            oha.set(4, buf);
            bat.putLong(buf, 0, 43);
            oha.set(5, buf);
            OffHeapStructBinarySearch.IndexRange range41 = new OffHeapStructBinarySearch.IndexRange();
            OffHeapStructBinarySearch.binarySearchRangeByLongKey(oha, 41, 0, range41);
            assertTrue(range41.isNotEmpty());
            assertEquals("Start fail", 0, range41.getFromIndex());

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool

        }
    }


    @Test
    public void testInt() {
        ByteArrayTool bat = ByteArrayTool.get();
        byte[] buf = new byte[8];
        OffHeapStructArray oha = null;
        try {
            oha = new OffHeapStructArray(LENGTH, 8);
            Random random = new Random(42);
            int[] arr = new int[LENGTH];
            int val4242 = -1;
            int val4243 = -1;
            for (int i = 0; i < LENGTH; i++) {
                int ra = random.nextInt();
                arr[i] = ra;
                bat.putLong(buf, 0, ra);
                oha.set(i, buf);
                if (4242 == i) val4242 = ra;
                if (4243 == i) val4243 = ra;
            }
            Arrays.sort(arr);

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool

        }
    }


    @Test
    public void testIntRange() {
        ByteArrayTool bat = ByteArrayTool.get();
        byte[] buf = new byte[8];
        OffHeapStructArray oha = null;
        try {
            oha = new OffHeapStructArray(6, 8);
            bat.putLong(buf, 0, 41);
            oha.set(0, buf);
            bat.putLong(buf, 0, 41);
            oha.set(1, buf);
            bat.putLong(buf, 0, 42);
            oha.set(2, buf);
            bat.putLong(buf, 0, 42);
            oha.set(3, buf);
            bat.putLong(buf, 0, 42);
            oha.set(4, buf);
            bat.putLong(buf, 0, 43);
            oha.set(5, buf);
            OffHeapStructBinarySearch.IndexRange range41 = new OffHeapStructBinarySearch.IndexRange();
            OffHeapStructBinarySearch.binarySearchRangeByIntKey(oha, 41, 0, range41);
            assertTrue(range41.isNotEmpty());
            assertEquals("Start fail", 0, range41.getFromIndex());

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool

public class OffHeapStructArrayTest {
    @Test
    public void test() {
        OffHeapStructArray arr = null;
        try {
            ByteArrayTool bat = ByteArrayTool.get();
            arr = new OffHeapStructArray(3, 8);
            byte[] buf42 = new byte[8];
            bat.putInt(buf42, 0, 42);
            arr.set(0, buf42);
            byte[] buf43 = new byte[8];
            bat.putInt(buf43, 0, 43);
            arr.set(1, buf43);
            byte[] buf44 = new byte[8];
            bat.putInt(buf44, 0, 44);
            arr.set(2, buf44);


            byte[] buf = new byte[8];
            arr.get(0, buf);
            assertArrayEquals("Contents fail", buf42, buf);

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Examples of com.alexkasko.unsafe.bytearray.ByteArrayTool


    @Test
    public void test() {
        OffHeapStructArrayList list = null;
        try {
            ByteArrayTool bat = ByteArrayTool.get();
            list = new OffHeapStructArrayList(8);
            byte[] buf = new byte[8];
            for (int i = 0; i < 42; i++) {
                bat.putLong(buf, 0, i);
                list.add(buf);
            }
            bat.putLong(buf, 0, 1L << 42);
            list.add(buf);
            assertEquals("Size fail", 43, list.size());
            assertTrue("Capacity fail", list.capacity() >= 43);
            list.get(0, buf);
            assertEquals("Payload fail", 0, bat.getLong(buf, 0));
            list.get(41, buf);
            assertEquals("Payload fail", 41, bat.getLong(buf, 0));
            list.get(42, buf);
            assertEquals("Payload fail", 1L << 42, bat.getLong(buf, 0));
        } finally {
            free(list);
        }
    }

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