private static void RoundTrip(int[] values, long expectedLength)
{
string fileName = "IntBlock.bin";
using (IntBlockWriter writer = new IntBlockWriter(new BufferedWriter(File.Create(fileName))))
{
for (int i = 0; i < values.Length; ++i)
{
writer.Write(values[i]);
}
}
Assert.AreEqual(expectedLength, new FileInfo(fileName).Length);
using (IntBlockReader reader = new IntBlockReader(new BufferedReader(File.OpenRead(fileName))))
{
int[] readValues;
int index = 0;
int count = 0;
do
{
count = reader.Next(out readValues);
for (int i = 0; i < count; ++i)
{
Assert.AreEqual(values[index++], readValues[i]);
}
} while (count == IntBlock.BlockSize);
Assert.AreEqual(values.Length, index);
}
}
public static void ReadIntBlock(string filePath, int bufferSizeBytes)
{
int[] block;
byte[] buffer = new byte[bufferSizeBytes];
long totalSize = 0;
long totalCount = 0;
using (new ConsoleWatch($"ReadIntBlock(\"{filePath}\", {bufferSizeBytes})", () => $"Done; {totalSize:n0} bytes"))
{
using (BufferedReader bufferedReader = new BufferedReader(File.OpenRead(filePath), buffer))
using (IntBlockReader reader = new IntBlockReader(bufferedReader))
{
while (true)
{
int count = reader.Next(out block);
for (int i = 0; i < count; ++i)
{
totalSize += block[i];
}
if (count == 0)
{
break;
}
}
}
}
//for (int j = 0; j < 4; ++j)
{
totalSize = 0;
totalCount = 0;
using (BufferedReader bufferedReader = BufferedReader.ReadAll(filePath))
using (new ConsoleWatch($"ReadIntBlock(\"{filePath}\", {bufferSizeBytes})", () => $"[ReadAll]; {totalSize:n0} bytes; {totalCount:n0} ints"))
{
using (IntBlockReader reader = new IntBlockReader(bufferedReader))
{
while (true)
{
int count = reader.Next(out block);
for (int i = 0; i < count; ++i)
{
totalSize += block[i];
}
totalCount += count;
if (count == 0)
{
break;
}
}
}
}
totalSize = 0;
using (BufferedReader bufferedReader = BufferedReader.ReadAll(filePath))
using (new ConsoleWatch($"ReadIntBlock(\"{filePath}\", {bufferSizeBytes})", () => $"[ReadAll, ForEach]; {totalSize:n0} bytes"))
{
using (IntBlockReader reader = new IntBlockReader(bufferedReader))
{
foreach (Memory <int> page in reader)
{
foreach (int value in page.Span)
{
totalSize += value;
}
}
}
}
}
}
