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Fix/memory (#135) (master-2x) #141

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Nov 6, 2019
Merged

Fix/memory (#135) (master-2x) #141

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100 changes: 49 additions & 51 deletions ImportBlocks/ImportBlocks.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -19,79 +19,77 @@ public override void Configure()

private bool OnExport(string[] args)
{
bool writeStart;
uint start, count;
string path;
if (args.Length < 2) return false;
if (!string.Equals(args[1], "block", StringComparison.OrdinalIgnoreCase)
&& !string.Equals(args[1], "blocks", StringComparison.OrdinalIgnoreCase))
return false;
if (args.Length >= 3 && uint.TryParse(args[2], out uint start))
if (args.Length >= 3 && uint.TryParse(args[2], out start))
{
if (start > Blockchain.Singleton.Height)
return true;
uint count = args.Length >= 4 ? uint.Parse(args[3]) : uint.MaxValue;
if (Blockchain.Singleton.Height < start) return true;
count = args.Length >= 4 ? uint.Parse(args[3]) : uint.MaxValue;
count = Math.Min(count, Blockchain.Singleton.Height - start + 1);
uint end = start + count - 1;
string path = $"chain.{start}.acc";
using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None))
path = $"chain.{start}.acc";
writeStart = true;
}
else
{
start = 0;
count = Blockchain.Singleton.Height - start + 1;
path = args.Length >= 3 ? args[2] : "chain.acc";
writeStart = false;
}

WriteBlocks(start, count, path, writeStart);

Console.WriteLine();
return true;
}

private void WriteBlocks(uint start, uint count, string path, bool writeStart)
{
uint end = start + count - 1;
using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None, 4096, FileOptions.WriteThrough))
{
if (fs.Length > 0)
{
if (fs.Length > 0)
byte[] buffer = new byte[sizeof(uint)];
if (writeStart)
{
fs.Seek(sizeof(uint), SeekOrigin.Begin);
byte[] buffer = new byte[sizeof(uint)];
fs.Read(buffer, 0, buffer.Length);
start += BitConverter.ToUInt32(buffer, 0);
fs.Seek(sizeof(uint), SeekOrigin.Begin);
}
else
{
fs.Write(BitConverter.GetBytes(start), 0, sizeof(uint));
fs.Read(buffer, 0, buffer.Length);
start = BitConverter.ToUInt32(buffer, 0);
fs.Seek(0, SeekOrigin.Begin);
}
if (start <= end)
fs.Write(BitConverter.GetBytes(count), 0, sizeof(uint));
fs.Seek(0, SeekOrigin.End);
using (Snapshot snapshot = Blockchain.Singleton.GetSnapshot())
for (uint i = start; i <= end; i++)
{
Block block = snapshot.GetBlock(i);
byte[] array = block.ToArray();
fs.Write(BitConverter.GetBytes(array.Length), 0, sizeof(int));
fs.Write(array, 0, array.Length);
Console.SetCursorPosition(0, Console.CursorTop);
Console.Write($"[{i}/{end}]");
}
}
}
else
{
start = 0;
uint end = Blockchain.Singleton.Height;
uint count = end - start + 1;
string path = args.Length >= 3 ? args[2] : "chain.acc";
using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None))
else
{
if (fs.Length > 0)
if (writeStart)
{
byte[] buffer = new byte[sizeof(uint)];
fs.Read(buffer, 0, buffer.Length);
start = BitConverter.ToUInt32(buffer, 0);
fs.Seek(0, SeekOrigin.Begin);
fs.Write(BitConverter.GetBytes(start), 0, sizeof(uint));
}
if (start <= end)
fs.Write(BitConverter.GetBytes(count), 0, sizeof(uint));
fs.Seek(0, SeekOrigin.End);
using (Snapshot snapshot = Blockchain.Singleton.GetSnapshot())
for (uint i = start; i <= end; i++)
{
Block block = snapshot.GetBlock(i);
byte[] array = block.ToArray();
fs.Write(BitConverter.GetBytes(array.Length), 0, sizeof(int));
fs.Write(array, 0, array.Length);
Console.SetCursorPosition(0, Console.CursorTop);
Console.Write($"[{i}/{end}]");
}
}
if (start <= end)
fs.Write(BitConverter.GetBytes(count), 0, sizeof(uint));
fs.Seek(0, SeekOrigin.End);
for (uint i = start; i <= end; i++)
{
Block block = Blockchain.Singleton.Store.GetBlock(i);
byte[] array = block.ToArray();
fs.Write(BitConverter.GetBytes(array.Length), 0, sizeof(int));
fs.Write(array, 0, array.Length);
Console.SetCursorPosition(0, Console.CursorTop);
Console.Write($"[{i}/{end}]");
}
}
Console.WriteLine();
return true;
}

private bool OnHelp(string[] args)
Expand Down