public BufferedLoader(int size, int maxItems, BigInt32Buffer buffer)
{
m_size = size;
m_maxItems = Math.Min(maxItems, BigNestedInt32Array.MAX_ITEMS);
m_info = new BigInt32Array(size << 1); // pointer and count
m_info.Fill(EOD);
m_buffer = buffer;
}
/// <summary>
/// resets loader. This also resets underlying BigIntBuffer.
/// </summary>
/// <param name="size"></param>
/// <param name="maxItems"></param>
/// <param name="buffer"></param>
public void Reset(int size, int maxItems, BigInt32Buffer buffer)
{
if (size >= Capacity)
{
throw new System.ArgumentException("unable to change size");
}
m_size = size;
m_maxItems = maxItems;
m_info.Fill(EOD);
m_buffer = buffer;
}
public void TestMemoryReuse()
{
int maxId = 4096;
int[] maxNumItems = { 1, 1, 2, 2, 3, 3, 3, 3, 1, 1 };
int[] minNumItems = { 1, 1, 0, 1, 0, 0, 2, 3, 1, 0 };
int[] count = new int[maxId];
BigInt32Buffer buffer = new BigInt32Buffer();
BigNestedInt32Array.BufferedLoader loader = null;
BigNestedInt32Array nestedArray = new BigNestedInt32Array();
Random rand = new Random();
for (int i = 0; i < maxNumItems.Length; i++)
{
loader = new BigNestedInt32Array.BufferedLoader(maxId, BigNestedInt32Array.MAX_ITEMS, buffer);
for (int id = 0; id < maxId; id++)
{
count[id] = 0;
int cnt = Math.Max(rand.Next(maxNumItems[i] + 1), minNumItems[i]);
for (int val = 0; val < cnt; val++)
{
if (loader.Add(id, val))
{
count[id]++;
}
}
}
nestedArray.Load(maxId, loader);
int[] buf = new int[1024];
for (int id = 0; id < maxId; id++)
{
int cnt = nestedArray.GetData(id, buf);
Assert.AreEqual(count[id], cnt, "count[" + i + "," + id + "]");
if (cnt > 0)
{
for (int val = 0; val < cnt; val++)
{
Assert.AreEqual(val, buf[val], "item[" + i + "," + id + "," + val + "]");
}
}
}
if (i == 0)
{
maxId = maxId * 2;
count = new int[maxId];
}
}
}
public void TestBufferedLoaderReuse()
{
int maxId = 5000;
int[] maxNumItems = { 25, 50, 20, 100, 15, 500, 10, 1000, 5, 2000, 2 };
int[,] count = new int[maxNumItems.Length, maxId];
var buffer = new BigInt32Buffer();
var loader = new BigNestedInt32Array.BufferedLoader(maxId, BigNestedInt32Array.MAX_ITEMS, buffer);
var nestedArray = new BigNestedInt32Array[maxNumItems.Length];
for (int i = 0; i < maxNumItems.Length; i++)
{
for (int id = 0; id < maxId; id++)
{
int cnt = id % (maxNumItems[i] + 1);
for (int val = 0; val < cnt; val++)
{
if (loader.Add(id, val))
{
count[i, id]++;
}
}
}
nestedArray[i] = new BigNestedInt32Array();
nestedArray[i].Load(maxId, loader);
loader.Reset(maxId, BigNestedInt32Array.MAX_ITEMS, buffer);
}
for (int i = 0; i < maxNumItems.Length; i++)
{
int[] buf = new int[1024];
for (int id = 0; id < maxId; id++)
{
int cnt = nestedArray[i].GetData(id, buf);
Assert.AreEqual(count[i, id], cnt, "count[" + i + "," + id + "]");
if (cnt > 0)
{
for (int val = 0; val < cnt; val++)
{
Assert.AreEqual(val, buf[val], "item[" + i + "," + id + "," + val + "]");
}
}
}
}
}