/// <summary>
/// Constructs a new container with the specified capacity and type of memory allocation.
/// </summary>
/// <param name="capacity">Container capacity.</param>
/// <param name="allocator">A member of the
/// [Unity.Collections.Allocator](https://docs.unity3d.com/ScriptReference/Unity.Collections.Allocator.html) enumeration.</param>
/// <param name="options">Memory should be cleared on allocation or left uninitialized.</param>
public UnsafeRingQueue(int capacity, Allocator allocator, NativeArrayOptions options = NativeArrayOptions.ClearMemory)
{
capacity += 1;
Allocator = allocator;
Control = new RingControl(capacity);
var sizeInBytes = capacity * UnsafeUtility.SizeOf <T>();
Ptr = (T *)UnsafeUtility.Malloc(sizeInBytes, 16, allocator);
if (options == NativeArrayOptions.ClearMemory)
{
UnsafeUtility.MemClear(Ptr, sizeInBytes);
}
}
/// <summary>
/// Constructs container as view into memory.
/// </summary>
/// <param name="ptr"></param>
/// <param name="capacity"></param>
public UnsafeRingQueue(T *ptr, int capacity)
{
Ptr = ptr;
Allocator = Allocator.Invalid;
Control = new RingControl(capacity);
}