/// <summary>
/// Ensures that there is sufficient memory allocated.
/// </summary>
/// <param name="capacity">
/// The required capacity of the block, in bytes.
/// </param>
/// <exception cref="OutOfMemoryException">
/// There is insufficient memory to satisfy the request.
/// </exception>
public void EnsureCapacity(int capacity)
{
int currentSize = MemoryBlock.IsInvalid ? 0 : MemoryBlock.Size;
if (capacity > currentSize)
{
if (0 != currentSize)
{
currentSize <<= 1;
}
if (capacity > currentSize)
{
currentSize = capacity;
}
if (!MemoryBlock.IsInvalid)
{
MemoryBlock.Dispose();
}
MemoryBlock = SafeHGlobalHandle.Allocate(currentSize);
}
}