internal OletxVolatileEnlistment(IEnlistmentNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions, OletxTransaction oletxTransaction) : base(null, oletxTransaction)
{
this.iEnlistmentNotification = enlistmentNotification;
this.enlistDuringPrepareRequired = (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None;
this.container = null;
this.pendingOutcome = TransactionStatus.Active;
if (DiagnosticTrace.Information)
{
EnlistmentTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), base.InternalTraceIdentifier, EnlistmentType.Volatile, enlistmentOptions);
}
}
internal InternalTransaction(Transaction outcomeSource, OletxTransaction distributedTx)
{
if (!TransactionManager._platformValidated)
{
TransactionManager.ValidatePlatform();
}
this.promotedTransaction = distributedTx;
this.absoluteTimeout = 0x7fffffffffffffffL;
this.outcomeSource = outcomeSource;
this.transactionHash = TransactionManager.TransactionTable.Add(this);
TransactionState._TransactionStateNonCommittablePromoted.EnterState(this);
this.promoteState = TransactionState._TransactionStateNonCommittablePromoted;
}
public OletxBaseEnlistment(OletxResourceManager oletxResourceManager, OletxTransaction oletxTransaction)
{
this.oletxResourceManager = oletxResourceManager;
this.oletxTransaction = oletxTransaction;
if (oletxTransaction != null)
{
this.enlistmentId = oletxTransaction.realOletxTransaction.enlistmentCount++;
this.transactionGuidString = oletxTransaction.realOletxTransaction.TxGuid.ToString();
}
else
{
this.transactionGuidString = Guid.Empty.ToString();
}
this.traceIdentifier = EnlistmentTraceIdentifier.Empty;
}
public OletxBaseEnlistment(OletxResourceManager oletxResourceManager, OletxTransaction oletxTransaction)
{
this.oletxResourceManager = oletxResourceManager;
this.oletxTransaction = oletxTransaction;
if (oletxTransaction != null)
{
this.enlistmentId = oletxTransaction.realOletxTransaction.enlistmentCount++;
this.transactionGuidString = oletxTransaction.realOletxTransaction.TxGuid.ToString();
}
else
{
this.transactionGuidString = Guid.Empty.ToString();
}
this.traceIdentifier = EnlistmentTraceIdentifier.Empty;
}
internal static Transaction FindOrCreatePromotedTransaction(
Guid transactionIdentifier,
Oletx.OletxTransaction oletx
)
{
Transaction tx = null;
Hashtable promotedTransactionTable = PromotedTransactionTable;
lock (promotedTransactionTable)
{
WeakReference weakRef = (WeakReference)promotedTransactionTable[transactionIdentifier];
if (null != weakRef)
{
tx = weakRef.Target as Transaction;
if (null != tx)
{
// If we found a transaction then dispose the oletx
oletx.Dispose();
return(tx.InternalClone());
}
else // an old, moldy weak reference. Let's get rid of it.
{
lock ( promotedTransactionTable )
{
promotedTransactionTable.Remove(transactionIdentifier);
}
}
}
tx = new Transaction(oletx);
// Since we are adding this reference to the table create an object that will clean that
// entry up.
tx.internalTransaction.finalizedObject = new FinalizedObject(tx.internalTransaction, oletx.Identifier);
weakRef = new WeakReference(tx, false);
promotedTransactionTable[oletx.Identifier] = weakRef;
}
oletx.savedLtmPromotedTransaction = tx;
TransactionManager.FireDistributedTransactionStarted(tx);
return(tx);
}
internal RealOletxTransaction(OletxTransactionManager transactionManager, ITransactionShim transactionShim, OutcomeEnlistment outcomeEnlistment, Guid identifier, OletxTransactionIsolationLevel oletxIsoLevel, bool isRoot)
{
bool flag = false;
try
{
this.oletxTransactionManager = transactionManager;
this.transactionShim = transactionShim;
this.outcomeEnlistment = outcomeEnlistment;
this.txGuid = identifier;
this.isolationLevel = OletxTransactionManager.ConvertIsolationLevelFromProxyValue(oletxIsoLevel);
this.status = TransactionStatus.Active;
this.undisposedOletxTransactionCount = 0;
this.phase0EnlistVolatilementContainerList = null;
this.phase1EnlistVolatilementContainer = null;
this.tooLateForEnlistments = false;
this.internalTransaction = null;
this.creationTime = DateTime.UtcNow;
this.lastStateChangeTime = this.creationTime;
this.internalClone = new OletxTransaction(this);
if (this.outcomeEnlistment != null)
{
this.outcomeEnlistment.SetRealTransaction(this);
}
else
{
this.status = TransactionStatus.InDoubt;
}
if (DiagnosticTrace.HaveListeners)
{
DiagnosticTrace.TraceTransfer(this.txGuid);
}
flag = true;
}
finally
{
if (!flag && (this.outcomeEnlistment != null))
{
this.outcomeEnlistment.UnregisterOutcomeCallback();
this.outcomeEnlistment = null;
}
}
}
internal RealOletxTransaction(OletxTransactionManager transactionManager, ITransactionShim transactionShim, OutcomeEnlistment outcomeEnlistment, Guid identifier, OletxTransactionIsolationLevel oletxIsoLevel, bool isRoot)
{
bool flag = false;
try
{
this.oletxTransactionManager = transactionManager;
this.transactionShim = transactionShim;
this.outcomeEnlistment = outcomeEnlistment;
this.txGuid = identifier;
this.isolationLevel = OletxTransactionManager.ConvertIsolationLevelFromProxyValue(oletxIsoLevel);
this.status = TransactionStatus.Active;
this.undisposedOletxTransactionCount = 0;
this.phase0EnlistVolatilementContainerList = null;
this.phase1EnlistVolatilementContainer = null;
this.tooLateForEnlistments = false;
this.internalTransaction = null;
this.creationTime = DateTime.UtcNow;
this.lastStateChangeTime = this.creationTime;
this.internalClone = new OletxTransaction(this);
if (this.outcomeEnlistment != null)
{
this.outcomeEnlistment.SetRealTransaction(this);
}
else
{
this.status = TransactionStatus.InDoubt;
}
if (DiagnosticTrace.HaveListeners)
{
DiagnosticTrace.TraceTransfer(this.txGuid);
}
flag = true;
}
finally
{
if (!flag && (this.outcomeEnlistment != null))
{
this.outcomeEnlistment.UnregisterOutcomeCallback();
this.outcomeEnlistment = null;
}
}
}
// Construct an internal transaction
internal InternalTransaction(Transaction outcomeSource, Oletx.OletxTransaction distributedTx)
{
if (!TransactionManager._platformValidated)
{
TransactionManager.ValidatePlatform();
}
this.promotedTransaction = distributedTx;
this.absoluteTimeout = long.MaxValue;
// Store the initial creater as it will be the source of outcome events
this.outcomeSource = outcomeSource;
// Initialize the hash
this.transactionHash = TransactionManager.TransactionTable.Add(this);
// Start the transaction off as active
TransactionState._TransactionStateNonCommittablePromoted.EnterState(this);
// Until otherwise noted this transaction uses normal promotion.
this.promoteState = TransactionState._TransactionStateNonCommittablePromoted;
}
internal static byte[] GetTransmitterPropagationToken(OletxTransaction oletxTx)
{
CoTaskMemHandle propgationToken = null;
byte[] destination = null;
uint propagationTokeSize = 0;
try
{
oletxTx.realOletxTransaction.TransactionShim.GetPropagationToken(out propagationTokeSize, out propgationToken);
destination = new byte[propagationTokeSize];
Marshal.Copy(propgationToken.DangerousGetHandle(), destination, 0, Convert.ToInt32(propagationTokeSize));
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw;
}
finally
{
if (propgationToken != null)
{
propgationToken.Close();
}
}
return destination;
}
public static Transaction GetTransactionFromExportCookie(byte[] cookie)
{
if (!TransactionManager._platformValidated)
{
TransactionManager.ValidatePlatform();
}
if (cookie == null)
{
throw new ArgumentNullException("cookie");
}
if (cookie.Length < 0x20)
{
throw new ArgumentException(System.Transactions.SR.GetString("InvalidArgument"), "cookie");
}
if (DiagnosticTrace.Verbose)
{
MethodEnteredTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "TransactionInterop.GetTransactionFromExportCookie");
}
byte[] destinationArray = new byte[cookie.Length];
Array.Copy(cookie, destinationArray, cookie.Length);
cookie = destinationArray;
Transaction transaction = null;
ITransactionShim transactionShim = null;
Guid empty = Guid.Empty;
OletxTransactionIsolationLevel isolationLevel = OletxTransactionIsolationLevel.ISOLATIONLEVEL_SERIALIZABLE;
OutcomeEnlistment target = null;
OletxTransaction oletx = null;
byte[] b = new byte[0x10];
for (int i = 0; i < b.Length; i++)
{
b[i] = cookie[i + 0x10];
}
Guid transactionIdentifier = new Guid(b);
transaction = TransactionManager.FindPromotedTransaction(transactionIdentifier);
if (null != transaction)
{
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "TransactionInterop.GetTransactionFromExportCookie");
}
return transaction;
}
RealOletxTransaction realOletxTransaction = null;
OletxTransactionManager distributedTransactionManager = TransactionManager.DistributedTransactionManager;
distributedTransactionManager.dtcTransactionManagerLock.AcquireReaderLock(-1);
try
{
target = new OutcomeEnlistment();
IntPtr zero = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
zero = HandleTable.AllocHandle(target);
distributedTransactionManager.DtcTransactionManager.ProxyShimFactory.Import(Convert.ToUInt32(cookie.Length), cookie, zero, out empty, out isolationLevel, out transactionShim);
}
finally
{
if ((transactionShim == null) && (zero != IntPtr.Zero))
{
HandleTable.FreeHandle(zero);
}
}
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw TransactionManagerCommunicationException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), exception);
}
finally
{
distributedTransactionManager.dtcTransactionManagerLock.ReleaseReaderLock();
}
realOletxTransaction = new RealOletxTransaction(distributedTransactionManager, transactionShim, target, empty, isolationLevel, false);
oletx = new OletxTransaction(realOletxTransaction);
transaction = TransactionManager.FindOrCreatePromotedTransaction(transactionIdentifier, oletx);
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "TransactionInterop.GetTransactionFromExportCookie");
}
return transaction;
}
public static Transaction GetTransactionFromDtcTransaction(IDtcTransaction transactionNative)
{
OletxXactTransInfo info;
if (!TransactionManager._platformValidated)
{
TransactionManager.ValidatePlatform();
}
bool flag = false;
ITransactionShim transactionShim = null;
Guid empty = Guid.Empty;
OletxTransactionIsolationLevel isolationLevel = OletxTransactionIsolationLevel.ISOLATIONLEVEL_SERIALIZABLE;
OutcomeEnlistment target = null;
RealOletxTransaction realOletxTransaction = null;
OletxTransaction oletx = null;
if (transactionNative == null)
{
throw new ArgumentNullException("transactionNative");
}
Transaction transaction = null;
if (DiagnosticTrace.Verbose)
{
MethodEnteredTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "TransactionInterop.GetTransactionFromDtc");
}
ITransactionNativeInternal internal2 = transactionNative as ITransactionNativeInternal;
if (internal2 == null)
{
throw new ArgumentException(System.Transactions.SR.GetString("InvalidArgument"), "transactionNative");
}
try
{
internal2.GetTransactionInfo(out info);
}
catch (COMException exception2)
{
if (System.Transactions.Oletx.NativeMethods.XACT_E_NOTRANSACTION != exception2.ErrorCode)
{
throw;
}
flag = true;
info.uow = Guid.Empty;
}
OletxTransactionManager distributedTransactionManager = TransactionManager.DistributedTransactionManager;
if (!flag)
{
transaction = TransactionManager.FindPromotedTransaction(info.uow);
if (null != transaction)
{
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "TransactionInterop.GetTransactionFromDtcTransaction");
}
return transaction;
}
distributedTransactionManager.dtcTransactionManagerLock.AcquireReaderLock(-1);
try
{
target = new OutcomeEnlistment();
IntPtr zero = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
zero = HandleTable.AllocHandle(target);
distributedTransactionManager.DtcTransactionManager.ProxyShimFactory.CreateTransactionShim(transactionNative, zero, out empty, out isolationLevel, out transactionShim);
}
finally
{
if ((transactionShim == null) && (zero != IntPtr.Zero))
{
HandleTable.FreeHandle(zero);
}
}
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw;
}
finally
{
distributedTransactionManager.dtcTransactionManagerLock.ReleaseReaderLock();
}
realOletxTransaction = new RealOletxTransaction(distributedTransactionManager, transactionShim, target, empty, isolationLevel, false);
oletx = new OletxTransaction(realOletxTransaction);
transaction = TransactionManager.FindOrCreatePromotedTransaction(info.uow, oletx);
}
else
{
realOletxTransaction = new RealOletxTransaction(distributedTransactionManager, null, null, empty, OletxTransactionIsolationLevel.ISOLATIONLEVEL_SERIALIZABLE, false);
oletx = new OletxTransaction(realOletxTransaction);
transaction = new Transaction(oletx);
TransactionManager.FireDistributedTransactionStarted(transaction);
oletx.savedLtmPromotedTransaction = transaction;
InternalTransaction.DistributedTransactionOutcome(transaction.internalTransaction, TransactionStatus.InDoubt);
}
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "TransactionInterop.GetTransactionFromDtc");
}
return transaction;
}
internal IPromotedEnlistment CommonEnlistVolatile(IEnlistmentNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions, OletxTransaction oletxTransaction)
{
OletxVolatileEnlistment enlistment = null;
bool flag2 = false;
bool flag = false;
OletxPhase0VolatileEnlistmentContainer target = null;
OletxPhase1VolatileEnlistmentContainer container = null;
IntPtr zero = IntPtr.Zero;
IVoterBallotShim voterBallotShim = null;
IPhase0EnlistmentShim shim = null;
bool flag3 = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock (this)
{
enlistment = new OletxVolatileEnlistment(enlistmentNotification, enlistmentOptions, oletxTransaction);
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
if (this.phase0EnlistVolatilementContainerList == null)
{
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
if (this.phase0EnlistVolatilementContainerList.Count == 0)
{
target = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
target = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if (!target.NewEnlistmentsAllowed)
{
target = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
flag = false;
}
}
if (flag)
{
zero = HandleTable.AllocHandle(target);
}
}
else if (this.phase1EnlistVolatilementContainer == null)
{
flag2 = true;
container = new OletxPhase1VolatileEnlistmentContainer(this)
{
voterHandle = HandleTable.AllocHandle(container)
};
}
else
{
flag2 = false;
container = this.phase1EnlistVolatilementContainer;
}
try
{
if (flag)
{
lock (target)
{
this.transactionShim.Phase0Enlist(zero, out shim);
target.Phase0EnlistmentShim = shim;
}
}
if (flag2)
{
this.transactionShim.CreateVoter(container.voterHandle, out voterBallotShim);
flag3 = true;
container.VoterBallotShim = voterBallotShim;
}
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
target.AddEnlistment(enlistment);
if (flag)
{
this.phase0EnlistVolatilementContainerList.Add(target);
}
return(enlistment);
}
container.AddEnlistment(enlistment);
if (flag2)
{
this.phase1EnlistVolatilementContainer = container;
}
return(enlistment);
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw;
}
return(enlistment);
}
}
finally
{
if ((zero != IntPtr.Zero) && (target.Phase0EnlistmentShim == null))
{
HandleTable.FreeHandle(zero);
}
if ((!flag3 && (container != null)) && ((container.voterHandle != IntPtr.Zero) && flag2))
{
HandleTable.FreeHandle(container.voterHandle);
}
}
return(enlistment);
}
internal IPromotedEnlistment CommonEnlistVolatile(IEnlistmentNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions, OletxTransaction oletxTransaction)
{
OletxVolatileEnlistment enlistment = null;
bool flag2 = false;
bool flag = false;
OletxPhase0VolatileEnlistmentContainer target = null;
OletxPhase1VolatileEnlistmentContainer container = null;
IntPtr zero = IntPtr.Zero;
IVoterBallotShim voterBallotShim = null;
IPhase0EnlistmentShim shim = null;
bool flag3 = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock (this)
{
enlistment = new OletxVolatileEnlistment(enlistmentNotification, enlistmentOptions, oletxTransaction);
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
if (this.phase0EnlistVolatilementContainerList == null)
{
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
if (this.phase0EnlistVolatilementContainerList.Count == 0)
{
target = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
target = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if (!target.NewEnlistmentsAllowed)
{
target = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
flag = false;
}
}
if (flag)
{
zero = HandleTable.AllocHandle(target);
}
}
else if (this.phase1EnlistVolatilementContainer == null)
{
flag2 = true;
container = new OletxPhase1VolatileEnlistmentContainer(this) {
voterHandle = HandleTable.AllocHandle(container)
};
}
else
{
flag2 = false;
container = this.phase1EnlistVolatilementContainer;
}
try
{
if (flag)
{
lock (target)
{
this.transactionShim.Phase0Enlist(zero, out shim);
target.Phase0EnlistmentShim = shim;
}
}
if (flag2)
{
this.transactionShim.CreateVoter(container.voterHandle, out voterBallotShim);
flag3 = true;
container.VoterBallotShim = voterBallotShim;
}
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
target.AddEnlistment(enlistment);
if (flag)
{
this.phase0EnlistVolatilementContainerList.Add(target);
}
return enlistment;
}
container.AddEnlistment(enlistment);
if (flag2)
{
this.phase1EnlistVolatilementContainer = container;
}
return enlistment;
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw;
}
return enlistment;
}
}
finally
{
if ((zero != IntPtr.Zero) && (target.Phase0EnlistmentShim == null))
{
HandleTable.FreeHandle(zero);
}
if ((!flag3 && (container != null)) && ((container.voterHandle != IntPtr.Zero) && flag2))
{
HandleTable.FreeHandle(container.voterHandle);
}
}
return enlistment;
}
internal OletxEnlistment EnlistDurable(OletxTransaction oletxTransaction, bool canDoSinglePhase, IEnlistmentNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions)
{
IResourceManagerShim resourceManagerShim = null;
IPhase0EnlistmentShim shim2 = null;
IEnlistmentShim enlistmentShim = null;
IntPtr zero = IntPtr.Zero;
bool flag3 = false;
bool flag2 = false;
OletxEnlistment target = new OletxEnlistment(canDoSinglePhase, enlistmentNotification, oletxTransaction.RealTransaction.TxGuid, enlistmentOptions, this, oletxTransaction);
bool flag = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
oletxTransaction.RealTransaction.IncrementUndecidedEnlistments();
flag2 = true;
}
}
lock (target)
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{
resourceManagerShim = this.ResourceManagerShim;
if (resourceManagerShim == null)
{
throw TransactionManagerCommunicationException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), null);
}
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
zero = HandleTable.AllocHandle(target);
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
oletxTransaction.RealTransaction.TransactionShim.Phase0Enlist(zero, out shim2);
flag3 = true;
}
target.Phase0EnlistmentShim = shim2;
}
target.phase1Handle = HandleTable.AllocHandle(target);
resourceManagerShim.Enlist(oletxTransaction.RealTransaction.TransactionShim, target.phase1Handle, out enlistmentShim);
target.EnlistmentShim = enlistmentShim;
}
catch (COMException exception)
{
if (System.Transactions.Oletx.NativeMethods.XACT_E_TOOMANY_ENLISTMENTS == exception.ErrorCode)
{
throw TransactionException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), System.Transactions.SR.GetString("OletxTooManyEnlistments"), exception);
}
OletxTransactionManager.ProxyException(exception);
throw;
}
finally
{
if (target.EnlistmentShim == null)
{
if ((zero != IntPtr.Zero) && !flag3)
{
HandleTable.FreeHandle(zero);
}
if (target.phase1Handle != IntPtr.Zero)
{
HandleTable.FreeHandle(target.phase1Handle);
}
}
}
}
flag = true;
}
finally
{
if ((!flag && ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)) && flag2)
{
oletxTransaction.RealTransaction.DecrementUndecidedEnlistments();
}
}
return target;
}
internal OletxVolatileEnlistment(
IEnlistmentNotificationInternal enlistmentNotification,
EnlistmentOptions enlistmentOptions,
OletxTransaction oletxTransaction
) : base( null, oletxTransaction )
{
this.iEnlistmentNotification = enlistmentNotification;
this.enlistDuringPrepareRequired = (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != 0;
// We get a container when we are asked to vote.
this.container = null;
pendingOutcome = TransactionStatus.Active;
if ( DiagnosticTrace.Information )
{
EnlistmentTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
this.InternalTraceIdentifier,
EnlistmentType.Volatile,
enlistmentOptions
);
}
}
internal OletxVolatileEnlistment(IEnlistmentNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions, OletxTransaction oletxTransaction) : base(null, oletxTransaction)
{
this.iEnlistmentNotification = enlistmentNotification;
this.enlistDuringPrepareRequired = (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None;
this.container = null;
this.pendingOutcome = TransactionStatus.Active;
if (DiagnosticTrace.Information)
{
EnlistmentTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), base.InternalTraceIdentifier, EnlistmentType.Volatile, enlistmentOptions);
}
}
public static Transaction GetTransactionFromDtcTransaction(
IDtcTransaction transactionNative
)
{
if ( !TransactionManager._platformValidated ) TransactionManager.ValidatePlatform();
bool tooLate = false;
ITransactionShim transactionShim = null;
Guid txIdentifier = Guid.Empty;
OletxTransactionIsolationLevel oletxIsoLevel = OletxTransactionIsolationLevel.ISOLATIONLEVEL_SERIALIZABLE;
OutcomeEnlistment outcomeEnlistment = null;
RealOletxTransaction realTx = null;
OletxTransaction oleTx = null;
if ( null == transactionNative )
{
throw new ArgumentNullException( "transactionNative" );
}
Transaction transaction = null;
if ( DiagnosticTrace.Verbose )
{
MethodEnteredTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
"TransactionInterop.GetTransactionFromDtc"
);
}
// Let's get the guid of the transaction from the proxy to see if we already
// have an object.
ITransactionNativeInternal myTransactionNative = transactionNative as ITransactionNativeInternal;
if ( null == myTransactionNative )
{
throw new ArgumentException( SR.GetString( SR.InvalidArgument ), "transactionNative" );
}
OletxXactTransInfo xactInfo;
try
{
myTransactionNative.GetTransactionInfo( out xactInfo );
}
catch ( COMException ex )
{
if ( Oletx.NativeMethods.XACT_E_NOTRANSACTION != ex.ErrorCode )
{
throw;
}
// If we get here, the transaction has appraently already been committed or aborted. Allow creation of the
// OletxTransaction, but it will be marked with a status of InDoubt and attempts to get its Identifier
// property will result in a TransactionException.
tooLate = true;
xactInfo.uow = Guid.Empty;
}
OletxTransactionManager oletxTm = TransactionManager.DistributedTransactionManager;
if ( ! tooLate )
{
// First check to see if there is a promoted LTM transaction with the same ID. If there
// is, just return that.
transaction = TransactionManager.FindPromotedTransaction( xactInfo.uow );
if ( null != transaction )
{
if ( DiagnosticTrace.Verbose )
{
MethodExitedTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
"TransactionInterop.GetTransactionFromDtcTransaction"
);
}
return transaction;
}
// We need to create a new RealOletxTransaction...
oletxTm.dtcTransactionManagerLock.AcquireReaderLock( -1 );
try
{
outcomeEnlistment = new OutcomeEnlistment();
IntPtr outcomeEnlistmentHandle = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
outcomeEnlistmentHandle = HandleTable.AllocHandle( outcomeEnlistment );
oletxTm.DtcTransactionManager.ProxyShimFactory.CreateTransactionShim(
transactionNative,
outcomeEnlistmentHandle,
out txIdentifier,
out oletxIsoLevel,
out transactionShim );
}
finally
{
if ( transactionShim == null && outcomeEnlistmentHandle != IntPtr.Zero )
{
HandleTable.FreeHandle( outcomeEnlistmentHandle );
}
}
}
catch ( COMException comException )
{
OletxTransactionManager.ProxyException( comException );
throw;
}
finally
{
oletxTm.dtcTransactionManagerLock.ReleaseReaderLock();
}
// We need to create a new RealOletxTransaction.
realTx = new RealOletxTransaction(
oletxTm,
transactionShim,
outcomeEnlistment,
txIdentifier,
oletxIsoLevel,
false );
oleTx = new OletxTransaction( realTx );
// If a transaction is found then FindOrCreate will Dispose the oletx
// created.
transaction = TransactionManager.FindOrCreatePromotedTransaction( xactInfo.uow, oleTx );
}
else
{
// It was too late to do a clone of the provided ITransactionNative, so we are just going to
// create a RealOletxTransaction without a transaction shim or outcome enlistment.
realTx = new RealOletxTransaction(
oletxTm,
null,
null,
txIdentifier,
OletxTransactionIsolationLevel.ISOLATIONLEVEL_SERIALIZABLE,
false );
oleTx = new OletxTransaction( realTx );
transaction = new Transaction( oleTx );
TransactionManager.FireDistributedTransactionStarted( transaction );
oleTx.savedLtmPromotedTransaction = transaction;
InternalTransaction.DistributedTransactionOutcome(transaction.internalTransaction, TransactionStatus.InDoubt);
}
if ( DiagnosticTrace.Verbose )
{
MethodExitedTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
"TransactionInterop.GetTransactionFromDtc"
);
}
return transaction;
}
internal static byte[] GetTransmitterPropagationToken(
OletxTransaction oletxTx
)
{
byte[] propagationToken = null;
CoTaskMemHandle propagationTokenBuffer = null;
UInt32 tokenSize = 0;
try
{
oletxTx.realOletxTransaction.TransactionShim.GetPropagationToken(
out tokenSize,
out propagationTokenBuffer );
propagationToken = new byte[tokenSize];
Marshal.Copy( propagationTokenBuffer.DangerousGetHandle(), propagationToken, 0, Convert.ToInt32(tokenSize) );
}
catch (COMException comException)
{
OletxTransactionManager.ProxyException( comException );
throw;
}
finally
{
if ( null != propagationTokenBuffer )
{
propagationTokenBuffer.Close();
}
}
return propagationToken;
}
public static Transaction GetTransactionFromExportCookie(
byte[] cookie
)
{
if ( !TransactionManager._platformValidated ) TransactionManager.ValidatePlatform();
if ( null == cookie )
{
throw new ArgumentNullException( "cookie" );
}
if ( cookie.Length < 32 )
{
throw new ArgumentException( SR.GetString( SR.InvalidArgument ), "cookie" );
}
if ( DiagnosticTrace.Verbose )
{
MethodEnteredTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
"TransactionInterop.GetTransactionFromExportCookie"
);
}
byte[] cookieCopy = new byte[cookie.Length];
Array.Copy(cookie, cookieCopy, cookie.Length);
cookie = cookieCopy;
Transaction transaction = null;
ITransactionShim transactionShim = null;
Guid txIdentifier = Guid.Empty;
OletxTransactionIsolationLevel oletxIsoLevel = OletxTransactionIsolationLevel.ISOLATIONLEVEL_SERIALIZABLE;
OutcomeEnlistment outcomeEnlistment = null;
OletxTransaction oleTx = null;
// Extract the transaction guid from the propagation token to see if we already have a
// transaction object for the transaction.
byte[] guidByteArray = new byte[16];
for (int i = 0; i < guidByteArray.Length; i++ )
{
// In a cookie, the transaction guid is preceeded by a signature guid.
guidByteArray[i] = cookie[i + 16];
}
Guid txId = new Guid( guidByteArray );
// First check to see if there is a promoted LTM transaction with the same ID. If there
// is, just return that.
transaction = TransactionManager.FindPromotedTransaction( txId );
if ( null != transaction )
{
if ( DiagnosticTrace.Verbose )
{
MethodExitedTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
"TransactionInterop.GetTransactionFromExportCookie"
);
}
return transaction;
}
// We need to create a new transaction
RealOletxTransaction realTx = null;
OletxTransactionManager oletxTm = TransactionManager.DistributedTransactionManager;
oletxTm.dtcTransactionManagerLock.AcquireReaderLock( -1 );
try
{
outcomeEnlistment = new OutcomeEnlistment();
IntPtr outcomeEnlistmentHandle = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
outcomeEnlistmentHandle = HandleTable.AllocHandle( outcomeEnlistment );
oletxTm.DtcTransactionManager.ProxyShimFactory.Import(
Convert.ToUInt32(cookie.Length),
cookie,
outcomeEnlistmentHandle,
out txIdentifier,
out oletxIsoLevel,
out transactionShim );
}
finally
{
if ( transactionShim == null && outcomeEnlistmentHandle != IntPtr.Zero )
{
HandleTable.FreeHandle( outcomeEnlistmentHandle );
}
}
}
catch ( COMException comException )
{
OletxTransactionManager.ProxyException( comException );
// We are unsure of what the exception may mean. It is possible that
// we could get E_FAIL when trying to contact a transaction manager that is
// being blocked by a fire wall. On the other hand we may get a COMException
// based on bad data. The more common situation is that the data is fine
// (since it is generated by Microsoft code) and the problem is with
// communication. So in this case we default for unknown exceptions to
// assume that the problem is with communication.
throw TransactionManagerCommunicationException.Create( SR.GetString( SR.TraceSourceOletx ), comException );
}
finally
{
oletxTm.dtcTransactionManagerLock.ReleaseReaderLock();
}
// We need to create a new RealOletxTransaction.
realTx = new RealOletxTransaction(
oletxTm,
transactionShim,
outcomeEnlistment,
txIdentifier,
oletxIsoLevel,
false );
// Now create the associated OletxTransaction.
oleTx = new OletxTransaction( realTx );
// If a transaction is found then FindOrCreate will Dispose the oletx
// created.
transaction = TransactionManager.FindOrCreatePromotedTransaction( txId, oleTx );
if ( DiagnosticTrace.Verbose )
{
MethodExitedTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
"TransactionInterop.GetTransactionFromExportCookie"
);
}
return transaction;
}
internal IPromotedEnlistment EnlistVolatile(ISinglePhaseNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions, OletxTransaction oletxTransaction)
{
return(this.CommonEnlistVolatile(enlistmentNotification, enlistmentOptions, oletxTransaction));
}
// Construct an internal transaction
internal InternalTransaction( Transaction outcomeSource, Oletx.OletxTransaction distributedTx )
{
if ( !TransactionManager._platformValidated ) TransactionManager.ValidatePlatform();
this.promotedTransaction = distributedTx;
this.absoluteTimeout = long.MaxValue;
// Store the initial creater as it will be the source of outcome events
this.outcomeSource = outcomeSource;
// Initialize the hash
this.transactionHash = TransactionManager.TransactionTable.Add( this );
// Start the transaction off as active
TransactionState._TransactionStateNonCommittablePromoted.EnterState( this );
// Until otherwise noted this transaction uses normal promotion.
this.promoteState = TransactionState._TransactionStateNonCommittablePromoted;
}
internal OletxEnlistment(bool canDoSinglePhase, IEnlistmentNotificationInternal enlistmentNotification, Guid transactionGuid, EnlistmentOptions enlistmentOptions, OletxResourceManager oletxResourceManager, OletxTransaction oletxTransaction) : base(oletxResourceManager, oletxTransaction)
{
this.transactionGuid = Guid.Empty;
this.phase1Handle = IntPtr.Zero;
this.enlistmentShim = null;
this.phase0Shim = null;
this.canDoSinglePhase = canDoSinglePhase;
this.iEnlistmentNotification = enlistmentNotification;
this.state = OletxEnlistmentState.Active;
this.transactionGuid = transactionGuid;
this.proxyPrepareInfoByteArray = null;
if (DiagnosticTrace.Information)
{
EnlistmentTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), base.InternalTraceIdentifier, EnlistmentType.Durable, enlistmentOptions);
}
base.AddToEnlistmentTable();
}
internal OletxEnlistment(bool canDoSinglePhase, IEnlistmentNotificationInternal enlistmentNotification, Guid transactionGuid, EnlistmentOptions enlistmentOptions, OletxResourceManager oletxResourceManager, OletxTransaction oletxTransaction) : base(oletxResourceManager, oletxTransaction)
{
this.transactionGuid = Guid.Empty;
this.phase1Handle = IntPtr.Zero;
this.enlistmentShim = null;
this.phase0Shim = null;
this.canDoSinglePhase = canDoSinglePhase;
this.iEnlistmentNotification = enlistmentNotification;
this.state = OletxEnlistmentState.Active;
this.transactionGuid = transactionGuid;
this.proxyPrepareInfoByteArray = null;
if (DiagnosticTrace.Information)
{
EnlistmentTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), base.InternalTraceIdentifier, EnlistmentType.Durable, enlistmentOptions);
}
base.AddToEnlistmentTable();
}
internal IPromotedEnlistment EnlistVolatile(ISinglePhaseNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions, OletxTransaction oletxTransaction)
{
return this.CommonEnlistVolatile(enlistmentNotification, enlistmentOptions, oletxTransaction);
}
internal OletxEnlistment(
bool canDoSinglePhase,
IEnlistmentNotificationInternal enlistmentNotification,
Guid transactionGuid,
EnlistmentOptions enlistmentOptions,
OletxResourceManager oletxResourceManager,
OletxTransaction oletxTransaction
) : base( oletxResourceManager, oletxTransaction )
{
Guid myGuid = Guid.Empty;
// This will get set later by the creator of this object after it
// has enlisted with the proxy.
this.enlistmentShim = null;
this.phase0Shim = null;
this.canDoSinglePhase = canDoSinglePhase;
this.iEnlistmentNotification = enlistmentNotification;
this.state = OletxEnlistmentState.Active;
this.transactionGuid = transactionGuid;
this.proxyPrepareInfoByteArray = null;
if ( DiagnosticTrace.Information )
{
EnlistmentTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
this.InternalTraceIdentifier,
EnlistmentType.Durable,
enlistmentOptions
);
}
// Always do this last incase anything earlier fails.
AddToEnlistmentTable();
}
internal OletxEnlistment EnlistDurable(OletxTransaction oletxTransaction, bool canDoSinglePhase, IEnlistmentNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions)
{
IResourceManagerShim resourceManagerShim = null;
IPhase0EnlistmentShim shim2 = null;
IEnlistmentShim enlistmentShim = null;
IntPtr zero = IntPtr.Zero;
bool flag3 = false;
bool flag2 = false;
OletxEnlistment target = new OletxEnlistment(canDoSinglePhase, enlistmentNotification, oletxTransaction.RealTransaction.TxGuid, enlistmentOptions, this, oletxTransaction);
bool flag = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
oletxTransaction.RealTransaction.IncrementUndecidedEnlistments();
flag2 = true;
}
}
lock (target)
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{
resourceManagerShim = this.ResourceManagerShim;
if (resourceManagerShim == null)
{
throw TransactionManagerCommunicationException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), null);
}
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
zero = HandleTable.AllocHandle(target);
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
oletxTransaction.RealTransaction.TransactionShim.Phase0Enlist(zero, out shim2);
flag3 = true;
}
target.Phase0EnlistmentShim = shim2;
}
target.phase1Handle = HandleTable.AllocHandle(target);
resourceManagerShim.Enlist(oletxTransaction.RealTransaction.TransactionShim, target.phase1Handle, out enlistmentShim);
target.EnlistmentShim = enlistmentShim;
}
catch (COMException exception)
{
if (System.Transactions.Oletx.NativeMethods.XACT_E_TOOMANY_ENLISTMENTS == exception.ErrorCode)
{
throw TransactionException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), System.Transactions.SR.GetString("OletxTooManyEnlistments"), exception);
}
OletxTransactionManager.ProxyException(exception);
throw;
}
finally
{
if (target.EnlistmentShim == null)
{
if ((zero != IntPtr.Zero) && !flag3)
{
HandleTable.FreeHandle(zero);
}
if (target.phase1Handle != IntPtr.Zero)
{
HandleTable.FreeHandle(target.phase1Handle);
}
}
}
}
flag = true;
}
finally
{
if ((!flag && ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)) && flag2)
{
oletxTransaction.RealTransaction.DecrementUndecidedEnlistments();
}
}
return(target);
}
internal IPromotedEnlistment EnlistVolatile(
IEnlistmentNotificationInternal enlistmentNotification,
EnlistmentOptions enlistmentOptions,
OletxTransaction oletxTransaction
)
{
IPromotedEnlistment enlistment = CommonEnlistVolatile(
enlistmentNotification,
enlistmentOptions,
oletxTransaction
);
return enlistment;
}
// Common constructor used by all types of constructors
// Create a clean and fresh transaction.
internal RealOletxTransaction(OletxTransactionManager transactionManager,
ITransactionShim transactionShim,
OutcomeEnlistment outcomeEnlistment,
Guid identifier,
OletxTransactionIsolationLevel oletxIsoLevel,
bool isRoot )
{
bool successful = false;
try
{
// initialize the member fields
this.oletxTransactionManager = transactionManager;
this.transactionShim = transactionShim;
this.outcomeEnlistment = outcomeEnlistment;
this.txGuid = identifier;
this.isolationLevel = OletxTransactionManager.ConvertIsolationLevelFromProxyValue( oletxIsoLevel );
this.status = TransactionStatus.Active;
this.undisposedOletxTransactionCount = 0;
this.phase0EnlistVolatilementContainerList = null;
this.phase1EnlistVolatilementContainer = null;
this.tooLateForEnlistments = false;
this.internalTransaction = null;
this.creationTime = DateTime.UtcNow;
this.lastStateChangeTime = this.creationTime;
// Connect this object with the OutcomeEnlistment.
this.internalClone = new OletxTransaction( this );
// We have have been created without an outcome enlistment if it was too late to create
// a clone from the ITransactionNative that we were created from.
if ( null != this.outcomeEnlistment )
{
this.outcomeEnlistment.SetRealTransaction( this );
}
else
{
this.status = TransactionStatus.InDoubt;
}
if ( DiagnosticTrace.HaveListeners )
{
DiagnosticTrace.TraceTransfer(this.txGuid);
}
successful = true;
}
finally
{
if (!successful)
{
if (this.outcomeEnlistment != null)
{
this.outcomeEnlistment.UnregisterOutcomeCallback();
this.outcomeEnlistment = null;
}
}
}
}
internal Transaction(OletxTransaction oleTransaction)
{
this.isoLevel = oleTransaction.IsolationLevel;
this.internalTransaction = new InternalTransaction(this, oleTransaction);
this.cloneId = Interlocked.Increment(ref this.internalTransaction.cloneCount);
}
internal OletxEnlistment EnlistDurable(
OletxTransaction oletxTransaction,
bool canDoSinglePhase,
IEnlistmentNotificationInternal enlistmentNotification,
EnlistmentOptions enlistmentOptions
)
{
IResourceManagerShim localResourceManagerShim = null;
Debug.Assert( null != oletxTransaction, "Argument is null" );
Debug.Assert( null != enlistmentNotification, "Argument is null" );
IEnlistmentShim enlistmentShim = null;
IPhase0EnlistmentShim phase0Shim = null;
Guid txUow = Guid.Empty;
IntPtr handlePhase0 = IntPtr.Zero;
bool phase0EnlistSucceeded = false;
bool undecidedEnlistmentsIncremented = false;
// Create our enlistment object.
OletxEnlistment enlistment = new OletxEnlistment(
canDoSinglePhase,
enlistmentNotification,
oletxTransaction.RealTransaction.TxGuid,
enlistmentOptions,
this,
oletxTransaction
);
bool enlistmentSucceeded = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
if ( (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != 0 )
{
RuntimeHelpers.PrepareConstrainedRegions();
try { }
finally
{
oletxTransaction.RealTransaction.IncrementUndecidedEnlistments();
undecidedEnlistmentsIncremented = true;
}
}
// This entire sequense needs to be executed before we can go on.
lock ( enlistment )
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{
// Do the enlistment on the proxy.
localResourceManagerShim = this.ResourceManagerShim;
if ( null == localResourceManagerShim )
{
// The TM must be down. Throw the appropriate exception.
throw TransactionManagerCommunicationException.Create( SR.GetString( SR.TraceSourceOletx), null );
}
if ( (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != 0 )
{
// We need to create an EnlistmentNotifyShim if native threads are not allowed to enter managed code.
handlePhase0 = HandleTable.AllocHandle( enlistment );
RuntimeHelpers.PrepareConstrainedRegions();
try { }
finally
{
oletxTransaction.RealTransaction.TransactionShim.Phase0Enlist(
handlePhase0,
out phase0Shim );
phase0EnlistSucceeded = true;
}
enlistment.Phase0EnlistmentShim = phase0Shim;
}
enlistment.phase1Handle = HandleTable.AllocHandle( enlistment );
localResourceManagerShim.Enlist(
oletxTransaction.RealTransaction.TransactionShim,
enlistment.phase1Handle,
out enlistmentShim );
enlistment.EnlistmentShim = enlistmentShim;
}
catch (COMException comException)
{
// There is no string mapping for XACT_E_TOOMANY_ENLISTMENTS, so we need to do it here.
if ( NativeMethods.XACT_E_TOOMANY_ENLISTMENTS == comException.ErrorCode )
{
throw TransactionException.Create(
SR.GetString( SR.TraceSourceOletx ),
SR.GetString( SR.OletxTooManyEnlistments ),
comException );
}
OletxTransactionManager.ProxyException( comException );
throw;
}
finally
{
if ( enlistment.EnlistmentShim == null )
{
// If the enlistment shim was never assigned then something blew up.
// Perform some cleanup.
if ( handlePhase0 != IntPtr.Zero && !phase0EnlistSucceeded )
{
// Only clean up the phase0 handle if the phase 0 enlistment did not succeed.
// This is because the notification processing code expects it to exist.
HandleTable.FreeHandle( handlePhase0 );
}
if ( enlistment.phase1Handle != IntPtr.Zero )
{
HandleTable.FreeHandle( enlistment.phase1Handle );
}
// Note this code used to call unenlist however this allows race conditions where
// it is unclear if the handlePhase0 should be freed or not. The notification
// thread should get a phase0Request and it will free the Handle at that point.
}
}
}
enlistmentSucceeded = true;
}
finally
{
if ( !enlistmentSucceeded &&
((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != 0) &&
undecidedEnlistmentsIncremented )
{
oletxTransaction.RealTransaction.DecrementUndecidedEnlistments();
}
}
return enlistment;
}
internal IPromotedEnlistment CommonEnlistVolatile(
IEnlistmentNotificationInternal enlistmentNotification,
EnlistmentOptions enlistmentOptions,
OletxTransaction oletxTransaction
)
{
OletxVolatileEnlistment enlistment = null;
bool needVoterEnlistment = false;
bool needPhase0Enlistment = false;
OletxPhase0VolatileEnlistmentContainer localPhase0VolatileContainer = null;
OletxPhase1VolatileEnlistmentContainer localPhase1VolatileContainer = null;
IntPtr phase0Handle = IntPtr.Zero;
IVoterBallotShim voterShim = null;
IPhase0EnlistmentShim phase0Shim = null;
bool enlistmentSucceeded = false;
// Yes, we are talking to the proxy while holding the lock on the RealOletxTransaction.
// If we don't then things get real sticky with other threads allocating containers.
// We only do this the first time we get a depenent clone of a given type (delay vs. non-delay).
// After that, we don't create a new container, except for Phase0 if we need to create one
// for a second wave.
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock ( this )
{
enlistment = new OletxVolatileEnlistment(
enlistmentNotification,
enlistmentOptions,
oletxTransaction
);
if ( (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != 0 )
{
if ( null == this.phase0EnlistVolatilementContainerList )
{
// Not using a MemoryBarrier because all access to this member variable is done when holding
// a lock on the object.
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
// We may have failed the proxy enlistment for the first container, but we would have
// allocated the list. That is why we have this check here.
if ( 0 == this.phase0EnlistVolatilementContainerList.Count )
{
localPhase0VolatileContainer = new OletxPhase0VolatileEnlistmentContainer( this );
needPhase0Enlistment = true;
}
else
{
localPhase0VolatileContainer = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if ( ! localPhase0VolatileContainer.NewEnlistmentsAllowed )
{
localPhase0VolatileContainer = new OletxPhase0VolatileEnlistmentContainer( this );
needPhase0Enlistment = true;
}
else
{
needPhase0Enlistment = false;
}
}
if ( needPhase0Enlistment )
{
// We need to create a VoterNotifyShim if native threads are not allowed to enter managed code.
phase0Handle = HandleTable.AllocHandle( localPhase0VolatileContainer );
}
}
else // not EDPR = TRUE - may need a voter...
{
if ( null == this.phase1EnlistVolatilementContainer )
{
needVoterEnlistment = true;
localPhase1VolatileContainer = new OletxPhase1VolatileEnlistmentContainer( this );
// We need to create a VoterNotifyShim.
localPhase1VolatileContainer.voterHandle =
HandleTable.AllocHandle( localPhase1VolatileContainer );
}
else
{
needVoterEnlistment = false;
localPhase1VolatileContainer = this.phase1EnlistVolatilementContainer;
}
}
try
{
// If enlistDuringPrepareRequired is true, we need to ask the proxy to create a Phase0 enlistment.
if ( needPhase0Enlistment )
{
lock ( localPhase0VolatileContainer )
{
transactionShim.Phase0Enlist(
phase0Handle,
out phase0Shim );
localPhase0VolatileContainer.Phase0EnlistmentShim = phase0Shim;
}
}
if ( needVoterEnlistment )
{
this.transactionShim.CreateVoter(
localPhase1VolatileContainer.voterHandle,
out voterShim );
enlistmentSucceeded = true;
localPhase1VolatileContainer.VoterBallotShim = voterShim;
}
if ( (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != 0 )
{
localPhase0VolatileContainer.AddEnlistment(
enlistment
);
if ( needPhase0Enlistment )
{
this.phase0EnlistVolatilementContainerList.Add( localPhase0VolatileContainer );
}
}
else
{
localPhase1VolatileContainer.AddEnlistment(
enlistment
);
if ( needVoterEnlistment )
{
Debug.Assert( ( null == this.phase1EnlistVolatilementContainer ),
"RealOletxTransaction.CommonEnlistVolatile - phase1VolContainer not null when expected." );
this.phase1EnlistVolatilementContainer = localPhase1VolatileContainer;
}
}
}
catch (COMException comException)
{
OletxTransactionManager.ProxyException( comException );
throw;
}
}
}
finally
{
if ( phase0Handle != IntPtr.Zero && localPhase0VolatileContainer.Phase0EnlistmentShim == null )
{
HandleTable.FreeHandle( phase0Handle );
}
if ( !enlistmentSucceeded &&
null != localPhase1VolatileContainer &&
localPhase1VolatileContainer.voterHandle != IntPtr.Zero &&
needVoterEnlistment )
{
HandleTable.FreeHandle( localPhase1VolatileContainer.voterHandle );
}
}
return enlistment;
}
internal static Transaction FindOrCreatePromotedTransaction(Guid transactionIdentifier, OletxTransaction oletx)
{
Transaction target = null;
Hashtable promotedTransactionTable = PromotedTransactionTable;
lock (promotedTransactionTable)
{
WeakReference reference = (WeakReference) promotedTransactionTable[transactionIdentifier];
if (reference != null)
{
target = reference.Target as Transaction;
if (null != target)
{
oletx.Dispose();
return target.InternalClone();
}
lock (promotedTransactionTable)
{
promotedTransactionTable.Remove(transactionIdentifier);
}
}
target = new Transaction(oletx) {
internalTransaction = { finalizedObject = new FinalizedObject(target.internalTransaction, oletx.Identifier) }
};
reference = new WeakReference(target, false);
promotedTransactionTable[oletx.Identifier] = reference;
}
oletx.savedLtmPromotedTransaction = target;
FireDistributedTransactionStarted(target);
return target;
}
