Examples of com.orientechnologies.common.directmemory.ODirectMemory.allocate()

com.orientechnologies.common.directmemory.ODirectMemory.allocate()
Allocates given amount of memory (in bytes) from pool and returns pointer on allocated memory or {@link #NULL_POINTER} if thereis no enough memory in pool. @param size Size that is needed to be allocated. @return Pointer to the allocated memory.

    final Random rnd = new Random();
    ODirectMemory directMemory = new OJNADirectMemory();


    long value = rnd.nextLong();


    long pointer = directMemory.allocate(OLongSerializer.LONG_SIZE);
    directMemory.setLong(pointer, value);


    Assert.assertEquals(directMemory.getLong(pointer), value);


    directMemory.free(pointer);

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  public void testInt() {
    final Random rnd = new Random();
    ODirectMemory directMemory = new OJNADirectMemory();


    int value = rnd.nextInt();
    long pointer = directMemory.allocate(OIntegerSerializer.INT_SIZE);
    directMemory.setInt(pointer, value);


    Assert.assertEquals(directMemory.getInt(pointer), value);


    directMemory.free(pointer);

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  public void testChar() {
    final Random rnd = new Random();
    ODirectMemory directMemory = new OJNADirectMemory();


    char value = (char) rnd.nextInt();
    long pointer = directMemory.allocate(OCharSerializer.CHAR_SIZE);
    directMemory.setChar(pointer, value);


    Assert.assertEquals(directMemory.getChar(pointer), value);


    directMemory.free(pointer);

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    ODirectMemory directMemory = new OJNADirectMemory();


    byte[] value = new byte[1];
    rnd.nextBytes(value);


    long pointer = directMemory.allocate(1);
    directMemory.setByte(pointer, value[0]);


    Assert.assertEquals(directMemory.getByte(pointer), value[0]);


    directMemory.free(pointer);

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    ODirectMemory directMemory = new OJNADirectMemory();


    byte[] value = new byte[256];
    rnd.nextBytes(value);


    long pointer = directMemory.allocate(value.length);
    directMemory.set(pointer, value, 0, value.length);


    Assert.assertEquals(directMemory.get(pointer, value.length), value);
    Assert.assertEquals(directMemory.get(pointer, value.length / 2), Arrays.copyOf(value, value.length / 2));

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    ODirectMemory directMemory = new OJNADirectMemory();


    byte[] value = new byte[256];
    rnd.nextBytes(value);


    long pointer = directMemory.allocate(value.length);
    directMemory.set(pointer, value, value.length / 2, value.length / 2);


    Assert.assertEquals(directMemory.get(pointer, value.length / 2), Arrays.copyOfRange(value, value.length / 2, value.length));


    directMemory.free(pointer);

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    ODirectMemory directMemory = new OJNADirectMemory();


    byte[] value = new byte[256];
    rnd.nextBytes(value);


    long pointer = directMemory.allocate(value.length);
    directMemory.set(pointer, value, 0, value.length);


    directMemory.moveData(pointer, pointer + value.length / 2, value.length / 2);


    System.arraycopy(value, 0, value, value.length / 2, value.length / 2);

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    ODirectMemory directMemory = new OJNADirectMemory();


    byte[] value = new byte[256];
    rnd.nextBytes(value);


    long pointer = directMemory.allocate(value.length);
    directMemory.set(pointer, value, 0, value.length);


    directMemory.moveData(pointer, pointer + 1, value.length / 3);


    System.arraycopy(value, 0, value, 1, value.length / 3);

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    ODirectMemory directMemory = new OJNADirectMemory();


    byte[] value = new byte[256];
    rnd.nextBytes(value);


    long pointer = directMemory.allocate(value.length);
    directMemory.set(pointer, value, 0, value.length);


    directMemory.moveData(pointer + 2, pointer + 5, value.length / 3);


    System.arraycopy(value, 2, value, 5, value.length / 3);

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