private void CreateArchiveFile <TKey, TValue>(SubFileName fileName, EncodingDefinition storageMethod, int maxSortedTreeBlockSize)
where TKey : SnapTypeBase <TKey>, new()
where TValue : SnapTypeBase <TValue>, new()
{
if (maxSortedTreeBlockSize < 1024)
{
throw new ArgumentOutOfRangeException(nameof(maxSortedTreeBlockSize), "Must be greater than 1024");
}
if (storageMethod is null)
{
throw new ArgumentNullException("storageMethod");
}
using (TransactionalEdit trans = m_fileStructure.BeginEdit())
{
using (SubFileStream fs = trans.CreateFile(fileName))
using (BinaryStream bs = new BinaryStream(fs))
{
int blockSize = m_fileStructure.Snapshot.Header.DataBlockSize;
while (blockSize > maxSortedTreeBlockSize)
{
blockSize >>= 2;
}
SortedTree <TKey, TValue> tree = SortedTree <TKey, TValue> .Create(bs, blockSize, storageMethod);
tree.Flush();
}
trans.ArchiveType = FileType;
trans.CommitAndDispose();
}
}
public void TestSequentialWriteAmplification()
{
MemoryPoolTest.TestMemoryLeak();
double size;
Stats.ChecksumCount = 0;
DiskIoSession.WriteCount = 0;
DiskIoSession.ReadCount = 0;
using (TransactionalFileStructure file = TransactionalFileStructure.CreateInMemory(4096))
using (TransactionalEdit edit = file.BeginEdit())
using (SubFileStream stream = edit.CreateFile(SubFileName.CreateRandom()))
using (BinaryStream bs = new BinaryStream(stream))
{
Stats.ChecksumCount = 0;
DiskIoSession.WriteCount = 0;
DiskIoSession.ReadCount = 0;
//Write 8 million
for (long s = 0; s < 1000000; s++)
{
bs.Write(s);
}
size = bs.Position / 4096.0;
}
System.Console.WriteLine("Read: " + (DiskIoSession.ReadCount / size).ToString("0.0"));
System.Console.WriteLine("Write: " + (DiskIoSession.WriteCount / size).ToString("0.0"));
System.Console.WriteLine("Checksums: " + (Stats.ChecksumCount / size).ToString("0.0"));
MemoryPoolTest.TestMemoryLeak();
}
public void TestSubFileStream()
{
const int BlockSize = 256;
MemoryPoolTest.TestMemoryLeak();
//string file = Path.GetTempFileName();
//System.IO.File.Delete(file);
try
{
//using (FileSystemSnapshotService service = FileSystemSnapshotService.CreateFile(file))
using (TransactionalFileStructure service = TransactionalFileStructure.CreateInMemory(BlockSize))
{
using (TransactionalEdit edit = service.BeginEdit())
{
SubFileStream fs = edit.CreateFile(SubFileName.Empty);
BinaryStream bs = new BinaryStream(fs);
for (int x = 0; x < 20000000; x++)
{
bs.Write(1L);
}
bs.Position = 0;
BinaryStreamBenchmark.Run(bs, false);
bs.Dispose();
fs.Dispose();
edit.CommitAndDispose();
}
}
}
finally
{
//System.IO.File.Delete(file);
}
MemoryPoolTest.TestMemoryLeak();
}
public void Test()
{
Assert.AreEqual(Globals.MemoryPool.AllocatedBytes, 0L);
//string file = Path.GetTempFileName();
//System.IO.File.Delete(file);
try
{
//using (FileSystemSnapshotService service = FileSystemSnapshotService.CreateFile(file))
using (TransactionalFileStructure service = TransactionalFileStructure.CreateInMemory(BlockSize))
{
using (TransactionalEdit edit = service.BeginEdit())
{
SubFileStream fs = edit.CreateFile(SubFileName.CreateRandom());
BinaryStream bs = new BinaryStream(fs);
bs.Write((byte)1);
bs.Dispose();
fs.Dispose();
edit.CommitAndDispose();
}
{
ReadSnapshot read = service.Snapshot;
SubFileStream f1 = read.OpenFile(0);
BinaryStream bs1 = new BinaryStream(f1);
if (bs1.ReadUInt8() != 1)
{
throw new Exception();
}
using (TransactionalEdit edit = service.BeginEdit())
{
SubFileStream f2 = edit.OpenFile(0);
BinaryStream bs2 = new BinaryStream(f2);
if (bs2.ReadUInt8() != 1)
{
throw new Exception();
}
bs2.Write((byte)3);
bs2.Dispose();
} //rollback should be issued;
if (bs1.ReadUInt8() != 0)
{
throw new Exception();
}
bs1.Dispose();
{
ReadSnapshot read2 = service.Snapshot;
SubFileStream f2 = read2.OpenFile(0);
BinaryStream bs2 = new BinaryStream(f2);
if (bs2.ReadUInt8() != 1)
{
throw new Exception();
}
if (bs2.ReadUInt8() != 0)
{
throw new Exception();
}
bs2.Dispose();
}
}
using (TransactionalEdit edit = service.BeginEdit())
{
SubFileStream f2 = edit.OpenFile(0);
BinaryStream bs2 = new BinaryStream(f2);
bs2.Write((byte)13);
bs2.Write((byte)23);
bs2.Dispose();
edit.RollbackAndDispose();
} //rollback should be issued;
}
}
finally
{
//System.IO.File.Delete(file);
}
Assert.AreEqual(Globals.MemoryPool.AllocatedBytes, 0L);
Assert.IsTrue(true);
}