internal void RemoveFromReenlistPending(OletxEnlistment enlistment)
{
lock (this.reenlistList)
{
this.reenlistPendingList.Remove(enlistment);
lock (this)
{
if (((this.reenlistThreadTimer != null) && (this.reenlistList.Count == 0)) && ((this.reenlistPendingList.Count == 0) && !this.reenlistThreadTimer.Change(0, -1)))
{
throw TransactionException.CreateInvalidOperationException(System.Transactions.SR.GetString("TraceSourceLtm"), System.Transactions.SR.GetString("UnexpectedTimerFailure"), null);
}
}
}
}
internal IPromotedEnlistment EnlistDurable(Guid resourceManagerIdentifier, ISinglePhaseNotificationInternal singlePhaseNotification, bool canDoSinglePhase, EnlistmentOptions enlistmentOptions)
{
if (DiagnosticTrace.Verbose)
{
MethodEnteredTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "OletxTransaction.EnlistDurable( ISinglePhaseNotificationInternal )");
}
if ((this.realOletxTransaction == null) || this.realOletxTransaction.TooLateForEnlistments)
{
throw TransactionException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), System.Transactions.SR.GetString("TooLate"), null);
}
OletxEnlistment enlistment = this.realOletxTransaction.OletxTransactionManagerInstance.FindOrRegisterResourceManager(resourceManagerIdentifier).EnlistDurable(this, canDoSinglePhase, singlePhaseNotification, enlistmentOptions);
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "OletxTransaction.EnlistDurable( ISinglePhaseNotificationInternal )");
}
return(enlistment);
}
internal void TMDownFromInternalRM(OletxTransactionManager oletxTM)
{
OletxEnlistment enlistment = null;
IDictionaryEnumerator enumerator = null;
Hashtable hashtable = null;
this.ResourceManagerShim = null;
lock (this.enlistmentHashtable.SyncRoot)
{
hashtable = (Hashtable)this.enlistmentHashtable.Clone();
}
enumerator = hashtable.GetEnumerator();
while (enumerator.MoveNext())
{
enlistment = enumerator.Value as OletxEnlistment;
if (enlistment != null)
{
enlistment.TMDownFromInternalRM(oletxTM);
}
}
}
internal OletxEnlistment ReenlistTransaction(
Guid resourceManagerIdentifier,
byte[] recoveryInformation,
IEnlistmentNotificationInternal enlistmentNotification
)
{
if (null == recoveryInformation)
{
throw new ArgumentNullException("recoveryInformation");
}
if (null == enlistmentNotification)
{
throw new ArgumentNullException("enlistmentNotification");
}
// Now go find the resource manager in the collection.
OletxResourceManager oletxResourceManager = RegisterResourceManager(resourceManagerIdentifier);
if (null == oletxResourceManager)
{
throw new ArgumentException(SR.GetString(SR.InvalidArgument), "resourceManagerIdentifier");
}
if (oletxResourceManager.RecoveryCompleteCalledByApplication)
{
throw new InvalidOperationException(SR.GetString(SR.ReenlistAfterRecoveryComplete));
}
// Now ask the resource manager to reenlist.
OletxEnlistment returnValue = oletxResourceManager.Reenlist(
recoveryInformation.Length,
recoveryInformation,
enlistmentNotification
);
return(returnValue);
}
internal static void ShimNotificationCallback(object state, bool timeout)
{
IntPtr zero = IntPtr.Zero;
ShimNotificationType none = ShimNotificationType.None;
bool isSinglePhase = false;
bool abortingHint = false;
uint prepareInfoSize = 0;
CoTaskMemHandle prepareInfo = null;
bool releaseRequired = false;
bool flag3 = false;
IDtcProxyShimFactory factory = null;
if (DiagnosticTrace.Verbose)
{
MethodEnteredTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "OletxTransactionManager.ShimNotificationCallback");
}
Thread.BeginCriticalRegion();
try
{
Label_003D:
factory = proxyShimFactory;
try
{
object obj2;
OletxResourceManager manager2;
byte[] buffer;
Thread.BeginThreadAffinity();
RuntimeHelpers.PrepareConstrainedRegions();
try
{
factory.GetNotification(out zero, out none, out isSinglePhase, out abortingHint, out releaseRequired, out prepareInfoSize, out prepareInfo);
}
finally
{
if (releaseRequired)
{
if (HandleTable.FindHandle(zero) is OletxInternalResourceManager)
{
processingTmDown = true;
Monitor.Enter(proxyShimFactory);
}
else
{
releaseRequired = false;
}
factory.ReleaseNotificationLock();
}
Thread.EndThreadAffinity();
}
if (processingTmDown)
{
lock (proxyShimFactory)
{
}
}
if (none != ShimNotificationType.None)
{
obj2 = HandleTable.FindHandle(zero);
switch (none)
{
case ShimNotificationType.Phase0RequestNotify:
try
{
OletxPhase0VolatileEnlistmentContainer container5 = obj2 as OletxPhase0VolatileEnlistmentContainer;
if (container5 != null)
{
DiagnosticTrace.SetActivityId(container5.TransactionIdentifier);
container5.Phase0Request(abortingHint);
}
else
{
OletxEnlistment enlistment8 = obj2 as OletxEnlistment;
if (enlistment8 != null)
{
DiagnosticTrace.SetActivityId(enlistment8.TransactionIdentifier);
enlistment8.Phase0Request(abortingHint);
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
break;
case ShimNotificationType.VoteRequestNotify:
break;
case ShimNotificationType.PrepareRequestNotify:
goto Label_02B0;
case ShimNotificationType.CommitRequestNotify:
goto Label_031A;
case ShimNotificationType.AbortRequestNotify:
goto Label_0358;
case ShimNotificationType.CommittedNotify:
try
{
OutcomeEnlistment enlistment7 = obj2 as OutcomeEnlistment;
if (enlistment7 != null)
{
DiagnosticTrace.SetActivityId(enlistment7.TransactionIdentifier);
enlistment7.Committed();
}
else
{
OletxPhase1VolatileEnlistmentContainer container3 = obj2 as OletxPhase1VolatileEnlistmentContainer;
if (container3 != null)
{
DiagnosticTrace.SetActivityId(container3.TransactionIdentifier);
container3.Committed();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
goto Label_0203;
case ShimNotificationType.AbortedNotify:
goto Label_0203;
case ShimNotificationType.InDoubtNotify:
goto Label_0251;
case ShimNotificationType.EnlistmentTmDownNotify:
goto Label_0396;
case ShimNotificationType.ResourceManagerTmDownNotify:
goto Label_03CD;
default:
goto Label_0410;
}
OletxPhase1VolatileEnlistmentContainer container4 = obj2 as OletxPhase1VolatileEnlistmentContainer;
if (container4 != null)
{
DiagnosticTrace.SetActivityId(container4.TransactionIdentifier);
container4.VoteRequest();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
Label_0203 :;
try
{
OutcomeEnlistment enlistment6 = obj2 as OutcomeEnlistment;
if (enlistment6 != null)
{
DiagnosticTrace.SetActivityId(enlistment6.TransactionIdentifier);
enlistment6.Aborted();
}
else
{
OletxPhase1VolatileEnlistmentContainer container2 = obj2 as OletxPhase1VolatileEnlistmentContainer;
if (container2 != null)
{
DiagnosticTrace.SetActivityId(container2.TransactionIdentifier);
container2.Aborted();
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_0251 :;
try
{
OutcomeEnlistment enlistment5 = obj2 as OutcomeEnlistment;
if (enlistment5 != null)
{
DiagnosticTrace.SetActivityId(enlistment5.TransactionIdentifier);
enlistment5.InDoubt();
}
else
{
OletxPhase1VolatileEnlistmentContainer container = obj2 as OletxPhase1VolatileEnlistmentContainer;
if (container != null)
{
DiagnosticTrace.SetActivityId(container.TransactionIdentifier);
container.InDoubt();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_02B0:
buffer = new byte[prepareInfoSize];
Marshal.Copy(prepareInfo.DangerousGetHandle(), buffer, 0, Convert.ToInt32(prepareInfoSize));
bool flag2 = true;
try
{
OletxEnlistment enlistment4 = obj2 as OletxEnlistment;
if (enlistment4 != null)
{
DiagnosticTrace.SetActivityId(enlistment4.TransactionIdentifier);
flag2 = enlistment4.PrepareRequest(isSinglePhase, buffer);
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
goto Label_0444;
}
finally
{
if (flag2)
{
HandleTable.FreeHandle(zero);
}
}
Label_031A :;
try
{
OletxEnlistment enlistment3 = obj2 as OletxEnlistment;
if (enlistment3 != null)
{
DiagnosticTrace.SetActivityId(enlistment3.TransactionIdentifier);
enlistment3.CommitRequest();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_0358 :;
try
{
OletxEnlistment enlistment2 = obj2 as OletxEnlistment;
if (enlistment2 != null)
{
DiagnosticTrace.SetActivityId(enlistment2.TransactionIdentifier);
enlistment2.AbortRequest();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_0396 :;
try
{
OletxEnlistment enlistment = obj2 as OletxEnlistment;
if (enlistment != null)
{
DiagnosticTrace.SetActivityId(enlistment.TransactionIdentifier);
enlistment.TMDown();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_03CD:
manager2 = obj2 as OletxResourceManager;
try
{
if (manager2 != null)
{
manager2.TMDown();
}
else
{
OletxInternalResourceManager manager = obj2 as OletxInternalResourceManager;
if (manager != null)
{
manager.TMDown();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_0410:
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
finally
{
if (prepareInfo != null)
{
prepareInfo.Close();
}
if (releaseRequired)
{
releaseRequired = false;
processingTmDown = false;
Monitor.Exit(proxyShimFactory);
}
}
Label_0444:
if (none != ShimNotificationType.None)
{
goto Label_003D;
}
flag3 = true;
}
finally
{
if (releaseRequired)
{
releaseRequired = false;
processingTmDown = false;
Monitor.Exit(proxyShimFactory);
}
if (!flag3 && (zero != IntPtr.Zero))
{
HandleTable.FreeHandle(zero);
}
Thread.EndCriticalRegion();
}
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "OletxTransactionManager.ShimNotificationCallback");
}
}
// This routine searches the reenlistPendingList for the specified enlistment and if it finds
// it, removes it from the list. An enlistment calls this routine when it is "finishing" because
// the RM has called EnlistmentDone or it was InDoubt. But it only calls it if the enlistment does NOT
// have a WrappedTransactionEnlistmentAsync value, indicating that it is a recovery enlistment.
internal void RemoveFromReenlistPending( OletxEnlistment enlistment )
{
// We lock the reenlistList because we have decided to lock that list when accessing either
// the reenlistList or the reenlistPendingList.
lock ( reenlistList )
{
// This will do a linear search of the list, but that is what we need to do because
// the enlistments may change indicies while notifications are outstanding. Also,
// this does not throw if the enlistment isn't on the list.
reenlistPendingList.Remove( enlistment );
lock ( this )
{
// If we have a ReenlistThread timer and both the reenlistList and the reenlistPendingList
// are empty, kick the ReenlistThread now.
if ( ( null != this.reenlistThreadTimer ) &&
( 0 == this.reenlistList.Count ) &&
( 0 == this.reenlistPendingList.Count )
)
{
if ( !this.reenlistThreadTimer.Change( 0, Timeout.Infinite ))
{
throw TransactionException.CreateInvalidOperationException(
SR.GetString( SR.TraceSourceLtm ),
SR.GetString(SR.UnexpectedTimerFailure),
null
);
}
}
}
}
}
internal OletxEnlistment Reenlist(
int prepareInfoLength,
byte[] prepareInfo,
IEnlistmentNotificationInternal enlistmentNotification
)
{
OletxTransactionOutcome outcome = OletxTransactionOutcome.NotKnownYet;
OletxTransactionStatus xactStatus = OletxTransactionStatus.OLETX_TRANSACTION_STATUS_NONE;
// Put the recovery information into a stream.
MemoryStream stream = new MemoryStream( prepareInfo );
// First extract the OletxRecoveryInformation from the stream.
IFormatter formatter = new BinaryFormatter();
OletxRecoveryInformation oletxRecoveryInformation;
try
{
oletxRecoveryInformation = formatter.Deserialize( stream ) as OletxRecoveryInformation;
}
catch (SerializationException se)
{
throw new ArgumentException( SR.GetString( SR.InvalidArgument ), "prepareInfo", se );
}
if ( null == oletxRecoveryInformation )
{
throw new ArgumentException( SR.GetString( SR.InvalidArgument ), "prepareInfo" );
}
// Verify that the resource manager guid in the recovery info matches that of the calling resource manager.
byte[] rmGuidArray = new byte[16];
for ( int i = 0; i < 16; i++ )
{
rmGuidArray[i] = oletxRecoveryInformation.proxyRecoveryInformation[i + 16];
}
Guid rmGuid = new Guid( rmGuidArray );
if ( rmGuid != this.resourceManagerIdentifier )
{
throw TransactionException.Create( SR.GetString( SR.TraceSourceOletx ), SR.GetString( SR.ResourceManagerIdDoesNotMatchRecoveryInformation ), null );
}
// Ask the proxy resource manager to reenlist.
IResourceManagerShim localResourceManagerShim = null;
try
{
localResourceManagerShim = this.ResourceManagerShim;
if ( null == localResourceManagerShim )
{
// The TM must be down. Throw the exception that will get caught below and will cause
// the enlistment to start the ReenlistThread. The TMDown thread will be trying to reestablish
// connection with the TM and will start the reenlist thread when it does.
throw new COMException( SR.GetString( SR.DtcTransactionManagerUnavailable ), NativeMethods.XACT_E_CONNECTION_DOWN );
}
// Only wait for 5 milliseconds. If the TM doesn't have the outcome now, we will
// put the enlistment on the reenlistList for later processing.
localResourceManagerShim.Reenlist(
Convert.ToUInt32( oletxRecoveryInformation.proxyRecoveryInformation.Length, CultureInfo.InvariantCulture ),
oletxRecoveryInformation.proxyRecoveryInformation,
out outcome
);
if ( OletxTransactionOutcome.Committed == outcome )
{
xactStatus = OletxTransactionStatus.OLETX_TRANSACTION_STATUS_COMMITTED;
}
else if ( OletxTransactionOutcome.Aborted == outcome )
{
xactStatus = OletxTransactionStatus.OLETX_TRANSACTION_STATUS_ABORTED;
}
else // we must not know the outcome yet.
{
xactStatus = OletxTransactionStatus.OLETX_TRANSACTION_STATUS_PREPARED;
StartReenlistThread();
}
}
catch ( COMException ex )
{
if ( NativeMethods.XACT_E_CONNECTION_DOWN == ex.ErrorCode )
{
xactStatus = OletxTransactionStatus.OLETX_TRANSACTION_STATUS_PREPARED;
this.ResourceManagerShim = null;
StartReenlistThread();
if ( DiagnosticTrace.Verbose )
{
ExceptionConsumedTraceRecord.Trace( SR.GetString( SR.TraceSourceOletx ),
ex );
}
}
else
{
throw;
}
}
finally
{
localResourceManagerShim = null;
}
// Now create our enlistment to tell the client the outcome.
OletxEnlistment enlistment = new OletxEnlistment(
enlistmentNotification,
xactStatus,
oletxRecoveryInformation.proxyRecoveryInformation,
this
);
return enlistment;
}
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 static void ShimNotificationCallback(object state, bool timeout)
{
// First we need to get the notification from the shim factory.
IntPtr enlistmentHandleIntPtr = IntPtr.Zero;
ShimNotificationType shimNotificationType = ShimNotificationType.None;
bool isSinglePhase = false;
bool abortingHint = false;
UInt32 prepareInfoSize = 0;
CoTaskMemHandle prepareInfoBuffer = null;
bool holdingNotificationLock = false;
bool cleanExit = false;
IDtcProxyShimFactory localProxyShimFactory = null;
if (DiagnosticTrace.Verbose)
{
MethodEnteredTraceRecord.Trace(SR.GetString(SR.TraceSourceOletx),
"OletxTransactionManager.ShimNotificationCallback"
);
}
// This lock doesn't really protect any of our data. It is here so that if an exception occurs
// while calling out to the app, we get an escalation to AppDomainUnload.
Thread.BeginCriticalRegion();
try
{
do
{
// Take a local copy of the proxyShimFactory because if we get an RM TMDown notification,
// we will still hold the critical section in that factory, but processing of the TMDown will
// cause replacement of the OletxTransactionManager.proxyShimFactory.
localProxyShimFactory = OletxTransactionManager.proxyShimFactory;
try
{
Thread.BeginThreadAffinity();
RuntimeHelpers.PrepareConstrainedRegions();
try
{
localProxyShimFactory.GetNotification(
out enlistmentHandleIntPtr,
out shimNotificationType,
out isSinglePhase,
out abortingHint,
out holdingNotificationLock,
out prepareInfoSize,
out prepareInfoBuffer
);
}
finally
{
if (holdingNotificationLock)
{
if ((HandleTable.FindHandle(enlistmentHandleIntPtr)) is OletxInternalResourceManager)
{
// In this case we know that the TM has gone down and we need to exchange
// the native lock for a managed lock.
processingTmDown = true;
#pragma warning disable 0618
//@
System.Threading.Monitor.Enter(OletxTransactionManager.proxyShimFactory);
#pragma warning restore 0618
}
else
{
holdingNotificationLock = false;
}
localProxyShimFactory.ReleaseNotificationLock();
}
Thread.EndThreadAffinity();
}
// If a TM down is being processed it is possible that the native lock
// has been exchanged for a managed lock. In that case we need to attempt
// to take a lock to hold up processing more events until the TM down
// processing is complete.
if (processingTmDown)
{
lock (OletxTransactionManager.proxyShimFactory)
{
// We don't do any work under this lock just make sure that we
// can take it.
}
}
if (ShimNotificationType.None != shimNotificationType)
{
Object target = HandleTable.FindHandle(enlistmentHandleIntPtr);
// Next, based on the notification type, cast the Handle accordingly and make
// the appropriate call on the enlistment.
switch (shimNotificationType)
{
case ShimNotificationType.Phase0RequestNotify:
{
try
{
OletxPhase0VolatileEnlistmentContainer ph0VolEnlistContainer = target as OletxPhase0VolatileEnlistmentContainer;
if (null != ph0VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph0VolEnlistContainer.TransactionIdentifier);
//CSDMain 91509 - We now synchronize this call with the AddDependentClone call in RealOleTxTransaction
ph0VolEnlistContainer.Phase0Request(abortingHint);
}
else
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistment.Phase0Request(abortingHint);
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.VoteRequestNotify:
{
OletxPhase1VolatileEnlistmentContainer ph1VolEnlistContainer = target as OletxPhase1VolatileEnlistmentContainer;
if (null != ph1VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph1VolEnlistContainer.TransactionIdentifier);
ph1VolEnlistContainer.VoteRequest();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
break;
}
case ShimNotificationType.CommittedNotify:
{
try
{
OutcomeEnlistment outcomeEnlistment = target as OutcomeEnlistment;
if (null != outcomeEnlistment)
{
DiagnosticTrace.SetActivityId(
outcomeEnlistment.TransactionIdentifier);
outcomeEnlistment.Committed();
}
else
{
OletxPhase1VolatileEnlistmentContainer ph1VolEnlistContainer = target as OletxPhase1VolatileEnlistmentContainer;
if (null != ph1VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph1VolEnlistContainer.TransactionIdentifier);
ph1VolEnlistContainer.Committed();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.AbortedNotify:
{
try
{
OutcomeEnlistment outcomeEnlistment = target as OutcomeEnlistment;
if (null != outcomeEnlistment)
{
DiagnosticTrace.SetActivityId(
outcomeEnlistment.TransactionIdentifier);
outcomeEnlistment.Aborted();
}
else
{
OletxPhase1VolatileEnlistmentContainer ph1VolEnlistContainer = target as OletxPhase1VolatileEnlistmentContainer;
if (null != ph1VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph1VolEnlistContainer.TransactionIdentifier);
ph1VolEnlistContainer.Aborted();
}
// else
// Voters may receive notifications even
// in cases where they therwise respond
// negatively to the vote request. It is
// also not guaranteed that we will get a
// notification if we do respond negatively.
// The only safe thing to do is to free the
// Handle when we abort the transaction
// with a voter. These two things together
// mean that we cannot guarantee that this
// Handle will be alive when we get this
// notification.
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.InDoubtNotify:
{
try
{
OutcomeEnlistment outcomeEnlistment = target as OutcomeEnlistment;
if (null != outcomeEnlistment)
{
DiagnosticTrace.SetActivityId(
outcomeEnlistment.TransactionIdentifier);
outcomeEnlistment.InDoubt();
}
else
{
OletxPhase1VolatileEnlistmentContainer ph1VolEnlistContainer = target as OletxPhase1VolatileEnlistmentContainer;
if (null != ph1VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph1VolEnlistContainer.TransactionIdentifier);
ph1VolEnlistContainer.InDoubt();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.PrepareRequestNotify:
{
byte[] prepareInfo = new byte[prepareInfoSize];
Marshal.Copy(prepareInfoBuffer.DangerousGetHandle(), prepareInfo, 0, Convert.ToInt32(prepareInfoSize));
bool enlistmentDone = true;
try
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistmentDone = enlistment.PrepareRequest(
isSinglePhase,
prepareInfo
);
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
finally
{
if (enlistmentDone)
{
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
}
break;
}
case ShimNotificationType.CommitRequestNotify:
{
try
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistment.CommitRequest();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.AbortRequestNotify:
{
try
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistment.AbortRequest();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.EnlistmentTmDownNotify:
{
try
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistment.TMDown();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.ResourceManagerTmDownNotify:
{
OletxResourceManager resourceManager = target as OletxResourceManager;
try
{
if (null != resourceManager)
{
resourceManager.TMDown();
}
else
{
OletxInternalResourceManager internalResourceManager = target as OletxInternalResourceManager;
if (null != internalResourceManager)
{
internalResourceManager.TMDown();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
}
finally
{
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
// Note that we don't free the gchandle on the OletxResourceManager. These objects
// are not going to go away.
break;
}
default:
{
Environment.FailFast(SR.GetString(SR.InternalError));
break;
}
}
}
}
finally
{
if (null != prepareInfoBuffer)
{
prepareInfoBuffer.Close();
}
if (holdingNotificationLock)
{
holdingNotificationLock = false;
processingTmDown = false;
System.Threading.Monitor.Exit(OletxTransactionManager.proxyShimFactory);
}
}
}while (ShimNotificationType.None != shimNotificationType);
cleanExit = true;
}
finally
{
if (holdingNotificationLock)
{
holdingNotificationLock = false;
processingTmDown = false;
System.Threading.Monitor.Exit(OletxTransactionManager.proxyShimFactory);
}
if (!cleanExit && enlistmentHandleIntPtr != IntPtr.Zero)
{
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
Thread.EndCriticalRegion();
}
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(SR.GetString(SR.TraceSourceOletx),
"OletxTransactionManager.ShimNotificationCallback"
);
}
}
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 void ReenlistThread(object state)
{
int count = 0;
bool flag = false;
OletxEnlistment enlistment = null;
IResourceManagerShim resourceManagerShim = null;
Timer reenlistThreadTimer = null;
bool flag2 = false;
OletxResourceManager manager = (OletxResourceManager)state;
try
{
if (DiagnosticTrace.Information)
{
MethodEnteredTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "OletxResourceManager.ReenlistThread");
}
lock (manager)
{
resourceManagerShim = manager.ResourceManagerShim;
reenlistThreadTimer = manager.reenlistThreadTimer;
manager.reenlistThreadTimer = null;
manager.reenlistThread = Thread.CurrentThread;
}
if (resourceManagerShim != null)
{
lock (manager.reenlistList)
{
count = manager.reenlistList.Count;
}
flag = false;
while ((!flag && (count > 0)) && (resourceManagerShim != null))
{
lock (manager.reenlistList)
{
enlistment = null;
count--;
if (manager.reenlistList.Count == 0)
{
flag = true;
}
else
{
enlistment = manager.reenlistList[0] as OletxEnlistment;
if (enlistment == null)
{
if (DiagnosticTrace.Critical)
{
InternalErrorTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "");
}
throw TransactionException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), System.Transactions.SR.GetString("InternalError"), null);
}
manager.reenlistList.RemoveAt(0);
object obj7 = enlistment;
lock (obj7)
{
if (OletxEnlistment.OletxEnlistmentState.Done == enlistment.State)
{
enlistment = null;
}
else if (OletxEnlistment.OletxEnlistmentState.Prepared != enlistment.State)
{
manager.reenlistList.Add(enlistment);
enlistment = null;
}
}
}
}
if (enlistment != null)
{
OletxTransactionOutcome notKnownYet = OletxTransactionOutcome.NotKnownYet;
try
{
if (enlistment.ProxyPrepareInfoByteArray == null)
{
if (DiagnosticTrace.Critical)
{
InternalErrorTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "");
}
throw TransactionException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), System.Transactions.SR.GetString("InternalError"), null);
}
resourceManagerShim.Reenlist((uint)enlistment.ProxyPrepareInfoByteArray.Length, enlistment.ProxyPrepareInfoByteArray, out notKnownYet);
if (notKnownYet == OletxTransactionOutcome.NotKnownYet)
{
object obj5 = enlistment;
lock (obj5)
{
if (OletxEnlistment.OletxEnlistmentState.Done == enlistment.State)
{
enlistment = null;
}
else
{
lock (manager.reenlistList)
{
manager.reenlistList.Add(enlistment);
enlistment = null;
}
}
}
}
}
catch (COMException exception)
{
if (System.Transactions.Oletx.NativeMethods.XACT_E_CONNECTION_DOWN != exception.ErrorCode)
{
throw;
}
if (DiagnosticTrace.Verbose)
{
ExceptionConsumedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), exception);
}
if (System.Transactions.Oletx.NativeMethods.XACT_E_CONNECTION_DOWN == exception.ErrorCode)
{
manager.ResourceManagerShim = null;
resourceManagerShim = manager.ResourceManagerShim;
}
}
if (enlistment != null)
{
object obj3 = enlistment;
lock (obj3)
{
if (OletxEnlistment.OletxEnlistmentState.Done != enlistment.State)
{
lock (manager.reenlistList)
{
manager.reenlistPendingList.Add(enlistment);
}
if (OletxTransactionOutcome.Committed != notKnownYet)
{
if (OletxTransactionOutcome.Aborted != notKnownYet)
{
if (DiagnosticTrace.Critical)
{
InternalErrorTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "");
}
throw TransactionException.Create(System.Transactions.SR.GetString("TraceSourceOletx"), System.Transactions.SR.GetString("InternalError"), null);
}
enlistment.State = OletxEnlistment.OletxEnlistmentState.Aborting;
if (DiagnosticTrace.Verbose)
{
EnlistmentNotificationCallTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), enlistment.EnlistmentTraceId, NotificationCall.Rollback);
}
enlistment.EnlistmentNotification.Rollback(enlistment);
}
else
{
enlistment.State = OletxEnlistment.OletxEnlistmentState.Committing;
if (DiagnosticTrace.Verbose)
{
EnlistmentNotificationCallTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), enlistment.EnlistmentTraceId, NotificationCall.Commit);
}
enlistment.EnlistmentNotification.Commit(enlistment);
}
}
else
{
enlistment = null;
}
continue;
}
}
}
}
}
resourceManagerShim = null;
lock (manager.reenlistList)
{
lock (manager)
{
count = manager.reenlistList.Count;
if ((0 >= count) && (0 >= manager.reenlistPendingList.Count))
{
if (!manager.CallProxyReenlistComplete())
{
manager.reenlistThreadTimer = reenlistThreadTimer;
if (!reenlistThreadTimer.Change(0x2710, -1))
{
throw TransactionException.CreateInvalidOperationException(System.Transactions.SR.GetString("TraceSourceLtm"), System.Transactions.SR.GetString("UnexpectedTimerFailure"), null);
}
}
else
{
flag2 = true;
}
}
else
{
manager.reenlistThreadTimer = reenlistThreadTimer;
if (!reenlistThreadTimer.Change(0x2710, -1))
{
throw TransactionException.CreateInvalidOperationException(System.Transactions.SR.GetString("TraceSourceLtm"), System.Transactions.SR.GetString("UnexpectedTimerFailure"), null);
}
}
manager.reenlistThread = null;
}
if (DiagnosticTrace.Information)
{
MethodExitedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "OletxResourceManager.ReenlistThread");
}
}
}
finally
{
resourceManagerShim = null;
if (flag2 && (reenlistThreadTimer != null))
{
reenlistThreadTimer.Dispose();
}
}
}
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 void RemoveFromReenlistPending(OletxEnlistment enlistment)
{
lock (this.reenlistList)
{
this.reenlistPendingList.Remove(enlistment);
lock (this)
{
if (((this.reenlistThreadTimer != null) && (this.reenlistList.Count == 0)) && ((this.reenlistPendingList.Count == 0) && !this.reenlistThreadTimer.Change(0, -1)))
{
throw TransactionException.CreateInvalidOperationException(System.Transactions.SR.GetString("TraceSourceLtm"), System.Transactions.SR.GetString("UnexpectedTimerFailure"), null);
}
}
}
}
