public void Rollback(SinglePhaseEnlistment enlistment)
{
SqlInternalConnection validConnection = this.GetValidConnection();
SqlConnection connection = validConnection.Connection;
Bid.Trace("<sc.SqlDelegatedTransaction.Rollback|RES|CPOOL> %d#, Connection %d#, aborting transaction.\n", this.ObjectID, validConnection.ObjectID);
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock (validConnection)
{
try
{
this.ValidateActiveOnConnection(validConnection);
this._active = false;
this._connection = null;
validConnection.ExecuteTransaction(SqlInternalConnection.TransactionRequest.Rollback, null, System.Data.IsolationLevel.Unspecified, this._internalTransaction, true);
}
catch (SqlException exception5)
{
ADP.TraceExceptionWithoutRethrow(exception5);
validConnection.DoomThisConnection();
}
catch (InvalidOperationException exception4)
{
ADP.TraceExceptionWithoutRethrow(exception4);
validConnection.DoomThisConnection();
}
}
validConnection.CleanupConnectionOnTransactionCompletion(this._atomicTransaction);
enlistment.Aborted();
}
catch (OutOfMemoryException exception3)
{
connection.Abort(exception3);
throw;
}
catch (StackOverflowException exception2)
{
connection.Abort(exception2);
throw;
}
catch (ThreadAbortException exception)
{
connection.Abort(exception);
throw;
}
}
// Called by the transaction to initiate commit sequence
public void SinglePhaseCommit(SinglePhaseEnlistment enlistment)
{
Debug.Assert(null != enlistment, "null enlistment?");
SqlInternalConnection connection = GetValidConnection();
SqlConnection usersConnection = connection.Connection;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
// If the connection is dooomed, we can be certain that the
// transaction will eventually be rolled back, and we shouldn't
// attempt to commit it.
if (connection.IsConnectionDoomed)
{
lock (connection)
{
_active = false; // set to inactive first, doesn't matter how the rest completes, this transaction is done.
_connection = null;
}
enlistment.Aborted(SQL.ConnectionDoomed());
}
else
{
Exception commitException;
lock (connection)
{
try
{
// Now that we've acquired the lock, make sure we still have valid state for this operation.
ValidateActiveOnConnection(connection);
_active = false; // set to inactive first, doesn't matter how the rest completes, this transaction is done.
_connection = null; // Set prior to ExecuteTransaction call in case this initiates a TransactionEnd event
connection.ExecuteTransaction(SqlInternalConnection.TransactionRequest.Commit, null, IsolationLevel.Unspecified, _internalTransaction, true);
commitException = null;
}
catch (SqlException e)
{
commitException = e;
// Doom the connection, to make sure that the transaction is
// eventually rolled back.
// VSTS 144562: doom the connection while having the lock on it to prevent race condition with "Transaction Ended" Event
connection.DoomThisConnection();
}
catch (InvalidOperationException e)
{
commitException = e;
connection.DoomThisConnection();
}
}
if (commitException != null)
{
// connection.ExecuteTransaction failed with exception
if (_internalTransaction.IsCommitted)
{
// Even though we got an exception, the transaction
// was committed by the server.
enlistment.Committed();
}
else if (_internalTransaction.IsAborted)
{
// The transaction was aborted, report that to
// SysTx.
enlistment.Aborted(commitException);
}
else
{
// The transaction is still active, we cannot
// know the state of the transaction.
enlistment.InDoubt(commitException);
}
// We eat the exception. This is called on the SysTx
// thread, not the applications thread. If we don't
// eat the exception an UnhandledException will occur,
// causing the process to FailFast.
}
connection.CleanupConnectionOnTransactionCompletion(_atomicTransaction);
if (commitException == null)
{
// connection.ExecuteTransaction succeeded
enlistment.Committed();
}
}
}
catch (System.OutOfMemoryException e)
{
usersConnection.Abort(e);
throw;
}
catch (System.StackOverflowException e)
{
usersConnection.Abort(e);
throw;
}
catch (System.Threading.ThreadAbortException e)
{
usersConnection.Abort(e);
throw;
}
}
// Called by transaction to initiate abort sequence
public void Rollback(SinglePhaseEnlistment enlistment)
{
Debug.Assert(null != enlistment, "null enlistment?");
SqlInternalConnection connection = GetValidConnection();
SqlConnection usersConnection = connection.Connection;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock (connection)
{
try
{
// Now that we've acquired the lock, make sure we still have valid state for this operation.
ValidateActiveOnConnection(connection);
_active = false; // set to inactive first, doesn't matter how the execute completes, this transaction is done.
_connection = null; // Set prior to ExecuteTransaction call in case this initiates a TransactionEnd event
// If we haven't already rolled back (or aborted) then tell the SQL Server to roll back
if (!_internalTransaction.IsAborted)
{
connection.ExecuteTransaction(SqlInternalConnection.TransactionRequest.Rollback, null, IsolationLevel.Unspecified, _internalTransaction, true);
}
}
catch (SqlException)
{
// Doom the connection, to make sure that the transaction is
// eventually rolled back.
// VSTS 144562: doom the connection while having the lock on it to prevent race condition with "Transaction Ended" Event
connection.DoomThisConnection();
// Unlike SinglePhaseCommit, a rollback is a rollback, regardless
// of how it happens, so SysTx won't throw an exception, and we
// don't want to throw an exception either, because SysTx isn't
// handling it and it may create a fail fast scenario. In the end,
// there is no way for us to communicate to the consumer that this
// failed for more serious reasons than usual.
//
// This is a bit like "should you throw if Close fails", however,
// it only matters when you really need to know. In that case,
// we have the tracing that we're doing to fallback on for the
// investigation.
}
catch (InvalidOperationException)
{
connection.DoomThisConnection();
}
}
// it doesn't matter whether the rollback succeeded or not, we presume
// that the transaction is aborted, because it will be eventually.
connection.CleanupConnectionOnTransactionCompletion(_atomicTransaction);
enlistment.Aborted();
}
catch (System.OutOfMemoryException e)
{
usersConnection.Abort(e);
throw;
}
catch (System.StackOverflowException e)
{
usersConnection.Abort(e);
throw;
}
catch (System.Threading.ThreadAbortException e)
{
usersConnection.Abort(e);
throw;
}
}