/// <summary>
/// Initializes a new instance of the <see cref="ArrayBlock"/> class.
/// </summary>
/// <param name="arrayBlockPool">The array block pool.</param>
/// <param name="id">The Id.</param>
/// <param name="buffer">The buffer.</param>
/// <param name="length">The length.</param>
public ArrayBlock(IArrayBlockPool arrayBlockPool, int id, byte[] buffer, int length)
{
Ensure.GreaterOrEqualZero(Log, id, "Id is negative");
Ensure.IsNotNull(Log, buffer, "buffer is null");
Ensure.GreaterZero(Log, length, "length <= 0");
Ensure.Greater(Log, buffer.Length, (id + 1) * length - 1, "length must be less than maximum offset");
Ensure.IsTrue(Log, buffer.Length % length == 0, "buffer length must be divided by length");
this.arrayBlockPool = arrayBlockPool;
this.id = id;
this.buffer = buffer;
this.length = length;
this.offset = id * length;
// buffer must be pinned.
this.ptrToData = this.arrayBlockPool != null?Marshal.UnsafeAddrOfPinnedArrayElement(buffer, this.offset) : IntPtr.Zero;
}
/// <summary>
/// Initializes a new instance of the <see cref="ArrayBlock"/> class.
/// </summary>
/// <param name="arrayBlockPool">The array block pool.</param>
/// <param name="id">The Id.</param>
/// <param name="buffer">The buffer.</param>
/// <param name="length">The length.</param>
public ArrayBlock(IArrayBlockPool arrayBlockPool, int id, byte[] buffer, int length)
{
Ensure.GreaterOrEqualZero(Log, id, "Id is negative");
Ensure.IsNotNull(Log, buffer, "buffer is null");
Ensure.GreaterZero(Log, length, "length <= 0");
Ensure.Greater(Log, buffer.Length, (id + 1) * length - 1, "length must be less than maximum offset");
Ensure.IsTrue(Log, buffer.Length % length == 0, "buffer length must be divided by length");
this.arrayBlockPool = arrayBlockPool;
this.id = id;
this.buffer = buffer;
this.length = length;
this.offset = id * length;
// buffer must be pinned.
this.ptrToData = this.arrayBlockPool != null ? Marshal.UnsafeAddrOfPinnedArrayElement(buffer, this.offset) : IntPtr.Zero;
}