protected override void ReadModifyWriteState(Action <SmartSyncState> act)
{
int retries = 5;
int sleepIntervalMs = 1000;
for (; ;)
{
var current = _counter.GetCurrent();
var success = _counter.IncrementWithAction(current, () =>
{
var state = ReadState();
act(state);
var nextStateFile = _stateFile.FullName + ".next";
using (var fs = new FileStream(nextStateFile, FileMode.Create, FileAccess.Write))
{
SmartSyncState.WriteToStream(fs, state);
}
File.Replace(nextStateFile, _stateFile.FullName, null, true);
});
if (success)
{
return;
}
else
{
if (retries < 0)
{
throw new System.IO.IOException("Unable to update after several retries.");
}
System.Threading.Thread.Sleep(sleepIntervalMs);
sleepIntervalMs *= 2;
retries--;
}
}
}
public static void WriteToStream(Stream strm, SmartSyncState state)
{
using (var xwr = XmlWriter.Create(strm, settings))
{
seralizer.WriteObject(xwr, state);
}
}
public static void WriteToStream(Stream strm,SmartSyncState state)
{
using (var xwr = XmlWriter.Create(strm, settings))
{
seralizer.WriteObject(xwr, state);
}
}
protected override SmartSyncState ReadState()
{
using (var fs = new FileStream(_stateFile.FullName, FileMode.Open, FileAccess.Read))
{
var ret = SmartSyncState.ReadFromStream(fs);
return(ret);
}
}
public override bool Initialize(bool force = false)
{
var ret = _counter.Init();
var mode = force ? FileMode.Create : FileMode.CreateNew;
if (force || ret)
{
using (var fs = new FileStream(_stateFile.FullName, mode, FileAccess.Write))
{
var initState = new SmartSyncState();
SmartSyncState.WriteToStream(fs, initState);
}
}
return ret;
}
public override bool Initialize(bool force = false)
{
var ret = _counter.Init();
var mode = force ? FileMode.Create : FileMode.CreateNew;
if (force || ret)
{
using (var fs = new FileStream(_stateFile.FullName, mode, FileAccess.Write))
{
var initState = new SmartSyncState();
SmartSyncState.WriteToStream(fs, initState);
}
}
return(ret);
}