public void Rollback()
{
object sync = this.sync;
lock (sync)
{
try
{
switch (this.state)
{
case SaveTransactionState.Initializing:
case SaveTransactionState.FailedInitialization:
case SaveTransactionState.Committing:
case SaveTransactionState.Committed:
case SaveTransactionState.RollingBack:
case SaveTransactionState.FailedRollback:
case SaveTransactionState.RolledBack:
throw new InvalidOperationException($"This transaction is not in a state that allows it to be committed ({this.state})");
case SaveTransactionState.Initialized:
case SaveTransactionState.FailedCommit:
break;
case SaveTransactionState.Disposed:
throw new ObjectDisposedException("SaveTransaction");
default:
throw new InternalErrorException(new InvalidEnumArgumentException("this.state", (int)this.state, typeof(SaveTransactionState)));
}
this.state = SaveTransactionState.RollingBack;
try
{
DisposableUtil.Free <GuardedStream>(ref this.guardedStream);
}
catch (IOException)
{
}
if (this.kernelTx != null)
{
this.kernelTx.Rollback();
this.kernelTx = null;
}
else if (this.tempPath != null)
{
File.Delete(this.tempPath);
}
this.tempPath = null;
this.state = SaveTransactionState.RolledBack;
}
catch (Exception)
{
this.state = SaveTransactionState.FailedRollback;
throw;
}
}
}
public SaveTransaction(string path, FileMode mode, FileAccess access, FileShare share, FileOptions options)
{
object sync = this.sync;
lock (sync)
{
this.state = SaveTransactionState.Initializing;
try
{
System.IO.Stream stream;
this.path = path;
if (File.Exists(this.path) && ((File.GetAttributes(this.path) & FileAttributes.ReadOnly) == FileAttributes.ReadOnly))
{
throw new UnauthorizedAccessException("Target path has the read only flag set");
}
this.kernelTx = new KernelTransaction();
Result <FileStream> result = this.kernelTx.TryOpenFile(path, mode, access, share, options, 0x1000);
if (result.IsValue)
{
stream = result.Value;
}
else
{
result.Observe();
this.kernelTx.Rollback();
this.kernelTx = null;
stream = null;
}
if (stream == null)
{
string str = FindUniqueFileName(this.path + ".", ".pdnSave");
stream = new FileStream(str, mode, access, share, 0x1000, options);
this.tempPath = str;
}
this.guardedStream = new GuardedStream(stream, true, 0x400);
this.state = SaveTransactionState.Initialized;
}
catch (Exception)
{
this.state = SaveTransactionState.FailedInitialization;
throw;
}
}
}
private void Dispose(bool disposing)
{
if (disposing)
{
object sync = this.sync;
lock (sync)
{
try
{
switch (this.state)
{
case SaveTransactionState.Initializing:
case SaveTransactionState.FailedInitialization:
case SaveTransactionState.Committing:
case SaveTransactionState.Committed:
case SaveTransactionState.RollingBack:
case SaveTransactionState.FailedRollback:
case SaveTransactionState.RolledBack:
case SaveTransactionState.Disposed:
goto Label_00C6;
case SaveTransactionState.Initialized:
case SaveTransactionState.FailedCommit:
this.Rollback();
goto Label_00C6;
}
throw new InternalErrorException(new InvalidEnumArgumentException("this.state", (int)this.state, typeof(SaveTransactionState)));
}
finally
{
this.state = SaveTransactionState.Disposed;
}
Label_00C6 :;
}
}
else
{
switch (this.state)
{
}
this.state = SaveTransactionState.Disposed;
}
}
public void Commit()
{
object sync = this.sync;
lock (sync)
{
switch (this.state)
{
case SaveTransactionState.Initializing:
case SaveTransactionState.FailedInitialization:
case SaveTransactionState.Committing:
case SaveTransactionState.FailedCommit:
case SaveTransactionState.Committed:
case SaveTransactionState.RollingBack:
case SaveTransactionState.FailedRollback:
case SaveTransactionState.RolledBack:
throw new InvalidOperationException($"This transaction is not in a state that allows it to be committed ({this.state})");
case SaveTransactionState.Initialized:
break;
case SaveTransactionState.Disposed:
throw new ObjectDisposedException("SaveTransaction");
default:
throw new InternalErrorException(new InvalidEnumArgumentException("this.state", (int)this.state, typeof(SaveTransactionState)));
}
this.state = SaveTransactionState.Committing;
try
{
DisposableUtil.Free <GuardedStream>(ref this.guardedStream);
if (this.kernelTx != null)
{
this.kernelTx.Commit();
this.kernelTx = null;
this.tempPath = null;
}
else
{
string destFileName = FindUniqueFileName(this.path + ".", ".pdnBak");
bool flag2 = File.Exists(this.path);
if (flag2)
{
File.Move(this.path, destFileName);
}
File.Move(this.tempPath, this.path);
this.tempPath = null;
if (flag2)
{
File.Delete(destFileName);
}
}
this.state = SaveTransactionState.Committed;
}
catch (Exception)
{
this.state = SaveTransactionState.FailedCommit;
throw;
}
}
}
