public CommandRingQueue(DynamicBuffer <B> dynamicBuffer)
{
int headSize = UnsafeUtility.SizeOf <CommandRingQueueHead>();
if (headSize > dynamicBuffer.Length)
{
throw new InvalidOperationException("无法创建队列，Buffer长度不对: err -1");
}
_head = (CommandRingQueueHead *)dynamicBuffer.GetUnsafePtr();
if (UnsafeUtility.SizeOf <T>() * _head->Capacity != dynamicBuffer.Length - headSize)
{
throw new InvalidOperationException("无法创建队列，Buffer长度不对.err -2");
}
_data = (T *)((byte *)dynamicBuffer.GetUnsafePtr() + headSize);
}
/// <summary>
/// 初始化队列
/// </summary>
/// <param name="dynamicBuffer"></param>
/// <param name="capacity"></param>
public static void Init(DynamicBuffer <B> dynamicBuffer, int capacity = 64)
{
if (UnsafeUtility.SizeOf <B>() != 1)
{
throw new InvalidOperationException("BufferElementData Size 只能是1字节");
}
// 分配大小
int size = UnsafeUtility.SizeOf <CommandRingQueueHead>() + UnsafeUtility.SizeOf <T>() * capacity;
dynamicBuffer.ResizeUninitialized(size);
CommandRingQueueHead *head = (CommandRingQueueHead *)dynamicBuffer.GetUnsafePtr();
head->Capacity = capacity;
head->Count = 0;
head->Read = 0;
head->Write = 0;
}
