Package org.lwjgl.util.lmdb

Class MDBVal

java.lang.Object
org.lwjgl.system.Pointer.Default
org.lwjgl.system.Struct<MDBVal>
org.lwjgl.util.lmdb.MDBVal
All Implemented Interfaces:
AutoCloseable, NativeResource, Pointer
public class MDBVal extends Struct<MDBVal> implements NativeResource

 struct MDB_val {
     size_t mv_size;
     void * mv_data;
 }

  • Field Details

    • SIZEOF

      public static final int SIZEOF
      The struct size in bytes.

    • ALIGNOF

      public static final int ALIGNOF
      The struct alignment in bytes.

    • MV_SIZE

      public static final int MV_SIZE
      The struct member offsets.

    • MV_DATA

      public static final int MV_DATA
      The struct member offsets.

  • Constructor Details

    • MDBVal

      public MDBVal(ByteBuffer container)
      Creates a MDBVal instance at the current position of the specified ByteBuffer container. Changes to the buffer's content will be visible to the struct instance and vice versa.

      The created instance holds a strong reference to the container object.

  • Method Details

    • sizeof

      public int sizeof()
      Description copied from class: Struct
      Returns sizeof(struct).
      Specified by:
      sizeof in class Struct<MDBVal>

    • mv_size

      public long mv_size()
      Returns:
      the value of the mv_size field.

    • mv_data

      public @Nullable ByteBuffer mv_data()
      Returns:
      a ByteBuffer view of the data pointed to by the mv_data field.

    • mv_size

      public MDBVal mv_size(long value)
      Sets the specified value to the mv_size field.

    • mv_data

      public MDBVal mv_data(@Nullable ByteBuffer value)
      Sets the address of the specified ByteBuffer to the mv_data field.

    • set

      public MDBVal set(long mv_size, @Nullable ByteBuffer mv_data)
      Initializes this struct with the specified values.

    • set

      public MDBVal set(MDBVal src)
      Copies the specified struct data to this struct.
      Parameters:
      src - the source struct
      Returns:
      this struct

    • malloc

      public static MDBVal malloc()
      Returns a new MDBVal instance allocated with memAlloc. The instance must be explicitly freed.

    • calloc

      public static MDBVal calloc()
      Returns a new MDBVal instance allocated with memCalloc. The instance must be explicitly freed.

    • create

      public static MDBVal create()
      Returns a new MDBVal instance allocated with BufferUtils.

    • create

      public static MDBVal create(long address)
      Returns a new MDBVal instance for the specified memory address.

    • createSafe

      public static @Nullable MDBVal createSafe(long address)
      Like create, but returns null if address is NULL.

    • malloc

      public static MDBVal.Buffer malloc(int capacity)
      Returns a new MDBVal.Buffer instance allocated with memAlloc. The instance must be explicitly freed.
      Parameters:
      capacity - the buffer capacity

    • calloc

      public static MDBVal.Buffer calloc(int capacity)
      Returns a new MDBVal.Buffer instance allocated with memCalloc. The instance must be explicitly freed.
      Parameters:
      capacity - the buffer capacity

    • create

      public static MDBVal.Buffer create(int capacity)
      Returns a new MDBVal.Buffer instance allocated with BufferUtils.
      Parameters:
      capacity - the buffer capacity

    • create

      public static MDBVal.Buffer create(long address, int capacity)
      Create a MDBVal.Buffer instance at the specified memory.
      Parameters:
      address - the memory address
      capacity - the buffer capacity

    • createSafe

      public static @Nullable MDBVal.Buffer createSafe(long address, int capacity)
      Like create, but returns null if address is NULL.

    • mallocStack

      @Deprecated public static MDBVal mallocStack()
      Deprecated.
      Deprecated for removal in 3.4.0. Use malloc(MemoryStack) instead.

    • callocStack

      @Deprecated public static MDBVal callocStack()
      Deprecated.
      Deprecated for removal in 3.4.0. Use calloc(MemoryStack) instead.

    • mallocStack

      @Deprecated public static MDBVal mallocStack(MemoryStack stack)
      Deprecated.
      Deprecated for removal in 3.4.0. Use malloc(MemoryStack) instead.

    • callocStack

      @Deprecated public static MDBVal callocStack(MemoryStack stack)
      Deprecated.
      Deprecated for removal in 3.4.0. Use calloc(MemoryStack) instead.

    • mallocStack

      @Deprecated public static MDBVal.Buffer mallocStack(int capacity)
      Deprecated.
      Deprecated for removal in 3.4.0. Use malloc(int, MemoryStack) instead.

    • callocStack

      @Deprecated public static MDBVal.Buffer callocStack(int capacity)
      Deprecated.
      Deprecated for removal in 3.4.0. Use calloc(int, MemoryStack) instead.

    • mallocStack

      @Deprecated public static MDBVal.Buffer mallocStack(int capacity, MemoryStack stack)
      Deprecated.
      Deprecated for removal in 3.4.0. Use malloc(int, MemoryStack) instead.

    • callocStack

      @Deprecated public static MDBVal.Buffer callocStack(int capacity, MemoryStack stack)
      Deprecated.
      Deprecated for removal in 3.4.0. Use calloc(int, MemoryStack) instead.

    • malloc

      public static MDBVal malloc(MemoryStack stack)
      Returns a new MDBVal instance allocated on the specified MemoryStack.
      Parameters:
      stack - the stack from which to allocate

    • calloc

      public static MDBVal calloc(MemoryStack stack)
      Returns a new MDBVal instance allocated on the specified MemoryStack and initializes all its bits to zero.
      Parameters:
      stack - the stack from which to allocate

    • malloc

      public static MDBVal.Buffer malloc(int capacity, MemoryStack stack)
      Returns a new MDBVal.Buffer instance allocated on the specified MemoryStack.
      Parameters:
      capacity - the buffer capacity
      stack - the stack from which to allocate

    • calloc

      public static MDBVal.Buffer calloc(int capacity, MemoryStack stack)
      Returns a new MDBVal.Buffer instance allocated on the specified MemoryStack and initializes all its bits to zero.
      Parameters:
      capacity - the buffer capacity
      stack - the stack from which to allocate

    • nmv_size

      public static long nmv_size(long struct)
      Unsafe version of mv_size().

    • nmv_data

      public static @Nullable ByteBuffer nmv_data(long struct)
      Unsafe version of mv_data.

    • nmv_size

      public static void nmv_size(long struct, long value)
      Sets the specified value to the mv_size field of the specified struct.

    • nmv_data

      public static void nmv_data(long struct, @Nullable ByteBuffer value)
      Unsafe version of mv_data.