internal DbConnectionPool GetConnectionPool(DbConnectionFactory connectionFactory)
{
object obj2 = null;
if (this._poolGroupOptions != null)
{
DbConnectionPoolIdentity noIdentity = DbConnectionPoolIdentity.NoIdentity;
if (this._poolGroupOptions.PoolByIdentity)
{
noIdentity = DbConnectionPoolIdentity.GetCurrent();
if (noIdentity.IsRestricted)
{
noIdentity = null;
}
}
if (noIdentity != null)
{
obj2 = this._poolCollection[noIdentity];
if (obj2 == null)
{
DbConnectionPoolProviderInfo connectionPoolProviderInfo = connectionFactory.CreateConnectionPoolProviderInfo(this.ConnectionOptions);
DbConnectionPool pool = new DbConnectionPool(connectionFactory, this, noIdentity, connectionPoolProviderInfo);
lock (this)
{
HybridDictionary dictionary = this._poolCollection;
obj2 = dictionary[noIdentity];
if ((obj2 == null) && this.MarkPoolGroupAsActive())
{
pool.Startup();
HybridDictionary dictionary2 = new HybridDictionary(1 + dictionary.Count, false);
foreach (DictionaryEntry entry in dictionary)
{
dictionary2.Add(entry.Key, entry.Value);
}
dictionary2.Add(noIdentity, pool);
connectionFactory.PerformanceCounters.NumberOfActiveConnectionPools.Increment();
this._poolCollection = dictionary2;
this._poolCount = dictionary2.Count;
obj2 = pool;
pool = null;
}
}
if (pool != null)
{
pool.Shutdown();
}
}
}
}
if (obj2 == null)
{
lock (this)
{
this.MarkPoolGroupAsActive();
}
}
return (DbConnectionPool) obj2;
}
internal override void OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
{
if (connectionFactory.SetInnerConnectionFrom(outerConnection, DbConnectionClosedConnecting.SingletonInstance, this))
{
DbConnectionInternal to = null;
try
{
connectionFactory.PermissionDemand(outerConnection);
to = connectionFactory.GetConnection(outerConnection);
}
catch
{
connectionFactory.SetInnerConnectionTo(outerConnection, this);
throw;
}
if (to == null)
{
connectionFactory.SetInnerConnectionTo(outerConnection, this);
throw ADP.InternalConnectionError(ADP.ConnectionError.GetConnectionReturnsNull);
}
connectionFactory.SetInnerConnectionEvent(outerConnection, to);
}
}
/// <devdoc>The default implementation is for the open connection objects, and
/// it simply throws. Our private closed-state connection objects
/// override this and do the correct thing.</devdoc>
// User code should either override DbConnectionInternal.Activate when it comes out of the pool
// or override DbConnectionFactory.CreateConnection when the connection is created for non-pooled connections
internal virtual bool TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource<DbConnectionInternal> retry, DbConnectionOptions userOptions) {
throw ADP.ConnectionAlreadyOpen(State);
}
virtual protected internal DataTable GetSchema(DbConnectionFactory factory, DbConnectionPoolGroup poolGroup, DbConnection outerConnection, string collectionName, string[] restrictions){
Debug.Assert(outerConnection != null,"outerConnection may not be null.");
DbMetaDataFactory metaDataFactory = factory.GetMetaDataFactory(poolGroup, this);
Debug.Assert(metaDataFactory != null,"metaDataFactory may not be null.");
return metaDataFactory.GetSchema(outerConnection, collectionName,restrictions);
}
internal DbConnectionPool GetConnectionPool(DbConnectionFactory connectionFactory) {
// When this method returns null it indicates that the connection
// factory should not use pooling.
// We don't support connection pooling on Win9x; it lacks too
// many of the APIs we require.
// PoolGroupOptions will only be null when we're not supposed to pool
// connections.
DbConnectionPool pool = null;
if (null != _poolGroupOptions) {
Debug.Assert(ADP.IsWindowsNT, "should not be pooling on Win9x");
DbConnectionPoolIdentity currentIdentity = DbConnectionPoolIdentity.NoIdentity;
if (_poolGroupOptions.PoolByIdentity) {
// if we're pooling by identity (because integrated security is
// being used for these connections) then we need to go out and
// search for the connectionPool that matches the current identity.
currentIdentity = DbConnectionPoolIdentity.GetCurrent();
// If the current token is restricted in some way, then we must
// not attempt to pool these connections.
if (currentIdentity.IsRestricted) {
currentIdentity = null;
}
}
if (null != currentIdentity) {
if (!_poolCollection.TryGetValue(currentIdentity, out pool)) { // find the pool
DbConnectionPoolProviderInfo connectionPoolProviderInfo = connectionFactory.CreateConnectionPoolProviderInfo(this.ConnectionOptions);
// optimistically create pool, but its callbacks are delayed until after actual add
DbConnectionPool newPool = new DbConnectionPool(connectionFactory, this, currentIdentity, connectionPoolProviderInfo);
lock (this) {
// Did someone already add it to the list?
if (!_poolCollection.TryGetValue(currentIdentity, out pool)) {
if (MarkPoolGroupAsActive()) {
// If we get here, we know for certain that we there isn't
// a pool that matches the current identity, so we have to
// add the optimistically created one
newPool.Startup(); // must start pool before usage
bool addResult = _poolCollection.TryAdd(currentIdentity, newPool);
Debug.Assert(addResult, "No other pool with current identity should exist at this point");
#if !MOBILE
connectionFactory.PerformanceCounters.NumberOfActiveConnectionPools.Increment();
#endif
pool = newPool;
newPool = null;
}
else {
// else pool entry has been disabled so don't create new pools
Debug.Assert(PoolGroupStateDisabled == _state, "state should be disabled");
}
}
else {
// else found an existing pool to use instead
Debug.Assert(PoolGroupStateActive == _state, "state should be active since a pool exists and lock holds");
}
}
if (null != newPool) {
// don't need to call connectionFactory.QueuePoolForRelease(newPool) because
// pool callbacks were delayed and no risk of connections being created
newPool.Shutdown();
}
}
// the found pool could be in any state
}
}
if (null == pool) {
lock(this) {
// keep the pool entry state active when not pooling
MarkPoolGroupAsActive();
}
}
return pool;
}
internal virtual void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory)
{
Bid.PoolerTrace("<prov.DbConnectionInternal.CloseConnection|RES|CPOOL> %d# Closing.\n", this.ObjectID);
if (connectionFactory.SetInnerConnectionFrom(owningObject, DbConnectionOpenBusy.SingletonInstance, this))
{
try
{
DbConnectionPool pool = this.Pool;
Transaction enlistedTransaction = this.EnlistedTransaction;
if (null != enlistedTransaction)
{
bool flag = true;
try
{
flag = TransactionStatus.Active != enlistedTransaction.TransactionInformation.Status;
}
catch (TransactionException)
{
}
if (flag)
{
this.DetachTransaction(enlistedTransaction, true);
}
}
if (pool != null)
{
pool.PutObject(this, owningObject);
}
else
{
this.Deactivate();
this.PerformanceCounters.HardDisconnectsPerSecond.Increment();
this._owningObject.Target = null;
if (this.IsTransactionRoot)
{
this.SetInStasis();
}
else
{
this.PerformanceCounters.NumberOfNonPooledConnections.Decrement();
if (base.GetType() != typeof(SqlInternalConnectionSmi))
{
this.Dispose();
}
}
}
}
finally
{
connectionFactory.SetInnerConnectionEvent(owningObject, DbConnectionClosedPreviouslyOpened.SingletonInstance);
}
}
}
protected internal virtual DataTable GetSchema(DbConnectionFactory factory, DbConnectionPoolGroup poolGroup, DbConnection outerConnection, string collectionName, string[] restrictions)
{
return factory.GetMetaDataFactory(poolGroup, this).GetSchema(outerConnection, collectionName, restrictions);
}
internal override void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory) {
// not much to do here...
}
internal DbConnectionPool?GetConnectionPool(DbConnectionFactory connectionFactory)
{
// When this method returns null it indicates that the connection
// factory should not use pooling.
// We don't support connection pooling on Win9x; it lacks too
// many of the APIs we require.
// PoolGroupOptions will only be null when we're not supposed to pool
// connections.
DbConnectionPool?pool = null;
if (null != _poolGroupOptions)
{
Debug.Assert(ADP.IsWindowsNT, "should not be pooling on Win9x");
DbConnectionPoolIdentity?currentIdentity = DbConnectionPoolIdentity.NoIdentity;
if (_poolGroupOptions.PoolByIdentity)
{
// if we're pooling by identity (because integrated security is
// being used for these connections) then we need to go out and
// search for the connectionPool that matches the current identity.
currentIdentity = DbConnectionPoolIdentity.GetCurrent();
// If the current token is restricted in some way, then we must
// not attempt to pool these connections.
if (currentIdentity.IsRestricted)
{
currentIdentity = null;
}
}
if (null != currentIdentity)
{
if (!_poolCollection.TryGetValue(currentIdentity, out pool))
{ // find the pool
lock (this)
{
// Did someone already add it to the list?
if (!_poolCollection.TryGetValue(currentIdentity, out pool))
{
DbConnectionPool newPool = new DbConnectionPool(connectionFactory, this, currentIdentity);
if (MarkPoolGroupAsActive())
{
// If we get here, we know for certain that we there isn't
// a pool that matches the current identity, so we have to
// add the optimistically created one
newPool.Startup(); // must start pool before usage
bool addResult = _poolCollection.TryAdd(currentIdentity, newPool);
Debug.Assert(addResult, "No other pool with current identity should exist at this point");
connectionFactory.PerformanceCounters.NumberOfActiveConnectionPools.Increment();
pool = newPool;
}
else
{
// else pool entry has been disabled so don't create new pools
Debug.Assert(PoolGroupStateDisabled == _state, "state should be disabled");
// don't need to call connectionFactory.QueuePoolForRelease(newPool) because
// pool callbacks were delayed and no risk of connections being created
newPool.Shutdown();
}
}
else
{
// else found an existing pool to use instead
Debug.Assert(PoolGroupStateActive == _state, "state should be active since a pool exists and lock holds");
}
}
}
// the found pool could be in any state
}
}
if (null == pool)
{
lock (this)
{
// keep the pool entry state active when not pooling
MarkPoolGroupAsActive();
}
}
return(pool);
}
internal virtual bool TryReplaceConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource <DbConnectionInternal> retry, DbConnectionOptions userOptions)
{
throw ADP.MethodNotImplemented();
}
internal override bool TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource <DbConnectionInternal>?retry, DbConnectionOptions?userOptions)
{
return(base.TryOpenConnectionInternal(outerConnection, connectionFactory, retry, userOptions));
}
internal override void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory)
{
}
/// <devdoc>The default implementation is for the open connection objects, and
/// it simply throws. Our private closed-state connection objects
/// override this and do the correct thing.</devdoc>
// User code should either override DbConnectionInternal.Activate when it comes out of the pool
// or override DbConnectionFactory.CreateConnection when the connection is created for non-pooled connections
internal virtual bool TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource <DbConnectionInternal>?retry, DbConnectionOptions?userOptions)
{
throw ADP.ConnectionAlreadyOpen(State);
}
internal bool Prune()
{
// must only call from DbConnectionFactory.PruneConnectionPoolGroups on background timer thread
// must lock(DbConnectionFactory._connectionPoolGroups.SyncRoot) before calling ReadyToRemove
// to avoid conflict with DbConnectionFactory.CreateConnectionPoolGroup replacing pool entry
lock (this)
{
if (_poolCollection.Count > 0)
{
var newPoolCollection = new ConcurrentDictionary <DbConnectionPoolIdentity, DbConnectionPool>();
foreach (var entry in _poolCollection)
{
DbConnectionPool pool = entry.Value;
if (pool != null)
{
// Pruning a pool while a connection is currently attempting to connect
// will cause the pool to be prematurely abandoned. The only known effect so
// far is that the errorWait throttling will be reset when this occurs.
// We should be able to avoid this situation by not pruning the pool if
// it's _waitCount is non-zero (i.e. no connections *in* the pool, but also
// no connections attempting to be created for the pool).
// Actually prune the pool if there are no connections in the pool and no errors occurred.
// Empty pool during pruning indicates zero or low activity, but
// an error state indicates the pool needs to stay around to
// throttle new connection attempts.
if ((!pool.ErrorOccurred) && (0 == pool.Count))
{
// Order is important here. First we remove the pool
// from the collection of pools so no one will try
// to use it while we're processing and finally we put the
// pool into a list of pools to be released when they
// are completely empty.
DbConnectionFactory connectionFactory = pool.ConnectionFactory;
connectionFactory.PerformanceCounters.NumberOfActiveConnectionPools.Decrement();
connectionFactory.QueuePoolForRelease(pool, false);
}
else
{
newPoolCollection.TryAdd(entry.Key, entry.Value);
}
}
}
_poolCollection = newPoolCollection;
}
// must be pruning thread to change state and no connections
// otherwise pruning thread risks making entry disabled soon after user calls ClearPool
if (0 == _poolCollection.Count)
{
if (PoolGroupStateActive == _state)
{
_state = PoolGroupStateIdle;
}
else if (PoolGroupStateIdle == _state)
{
_state = PoolGroupStateDisabled;
}
}
return(PoolGroupStateDisabled == _state);
}
}
protected bool TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource<DbConnectionInternal> retry, DbConnectionOptions userOptions) {
// ?->Connecting: prevent set_ConnectionString during Open
if (connectionFactory.SetInnerConnectionFrom(outerConnection, DbConnectionClosedConnecting.SingletonInstance, this)) {
DbConnectionInternal openConnection = null;
try {
connectionFactory.PermissionDemand(outerConnection);
if (!connectionFactory.TryGetConnection(outerConnection, retry, userOptions, this, out openConnection)) {
return false;
}
}
catch {
// This should occure for all exceptions, even ADP.UnCatchableExceptions.
connectionFactory.SetInnerConnectionTo(outerConnection, this);
throw;
}
if (null == openConnection) {
connectionFactory.SetInnerConnectionTo(outerConnection, this);
throw ADP.InternalConnectionError(ADP.ConnectionError.GetConnectionReturnsNull);
}
connectionFactory.SetInnerConnectionEvent(outerConnection, openConnection);
}
return true;
}
internal override bool TryReplaceConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource<DbConnectionInternal> retry, DbConnectionOptions userOptions) {
return base.TryOpenConnectionInternal(outerConnection, connectionFactory, retry, userOptions);
}
internal override void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory)
{
// not much to do here...
}
internal override bool TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource<DbConnectionInternal> retry, DbConnectionOptions userOptions) {
if (retry == null || !retry.Task.IsCompleted) {
// retry is null if this is a synchronous call
// if someone calls Open or OpenAsync while in this state,
// then the retry task will not be completed
throw ADP.ConnectionAlreadyOpen(State);
}
// we are completing an asynchronous open
Debug.Assert(retry.Task.Status == TaskStatus.RanToCompletion, "retry task must be completed successfully");
DbConnectionInternal openConnection = retry.Task.Result;
if (null == openConnection) {
connectionFactory.SetInnerConnectionTo(outerConnection, this);
throw ADP.InternalConnectionError(ADP.ConnectionError.GetConnectionReturnsNull);
}
connectionFactory.SetInnerConnectionEvent(outerConnection, openConnection);
return true;
}
protected internal override DataTable GetSchema(DbConnectionFactory factory, DbConnectionPoolGroup poolGroup, DbConnection outerConnection, string collectionName, string[] restrictions) => throw ADP.ClosedConnectionError();
override protected internal DataTable GetSchema(DbConnectionFactory factory, DbConnectionPoolGroup poolGroup, DbConnection outerConnection, string collectionName, string[] restrictions) {
throw ADP.ClosedConnectionError();
}
internal override bool TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource <DbConnectionInternal> retry, DbConnectionOptions userOptions) => throw ADP.ConnectionAlreadyOpen(State);
internal virtual void OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
{
throw ADP.ConnectionAlreadyOpen(this.State);
}
internal override void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory)
{
connectionFactory.SetInnerConnectionTo(owningObject, DbConnectionClosedPreviouslyOpened.SingletonInstance);
}
protected DbConnectionBase (DbConnectionFactory connectionFactory)
{
this.connectionFactory = connectionFactory;
}
internal override bool TryReplaceConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource <DbConnectionInternal> retry, DbConnectionOptions userOptions) => TryOpenConnection(outerConnection, connectionFactory, retry, userOptions);
internal virtual void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory) {
// The implementation here is the implementation required for the
// "open" internal connections, since our own private "closed"
// singleton internal connection objects override this method to
// prevent anything funny from happening (like disposing themselves
// or putting them into a connection pool)
//
// Derived class should override DbConnectionInternal.Deactivate and DbConnectionInternal.Dispose
// for cleaning up after DbConnection.Close
// protected override void Deactivate() { // override DbConnectionInternal.Close
// // do derived class connection deactivation for both pooled & non-pooled connections
// }
// public override void Dispose() { // override DbConnectionInternal.Close
// // do derived class cleanup
// base.Dispose();
// }
//
// overriding DbConnection.Close is also possible, but must provider for their own synchronization
// public override void Close() { // override DbConnection.Close
// base.Close();
// // do derived class outer connection for both pooled & non-pooled connections
// // user must do their own synchronization here
// }
//
// if the DbConnectionInternal derived class needs to close the connection it should
// delegate to the DbConnection if one exists or directly call dispose
// DbConnection owningObject = (DbConnection)Owner;
// if (null != owningObject) {
// owningObject.Close(); // force the closed state on the outer object.
// }
// else {
// Dispose();
// }
//
////////////////////////////////////////////////////////////////
// DON'T MESS WITH THIS CODE UNLESS YOU KNOW WHAT YOU'RE DOING!
////////////////////////////////////////////////////////////////
Debug.Assert(null != owningObject, "null owningObject");
Debug.Assert(null != connectionFactory, "null connectionFactory");
Bid.PoolerTrace("<prov.DbConnectionInternal.CloseConnection|RES|CPOOL> %d# Closing.\n", ObjectID);
// if an exception occurs after the state change but before the try block
// the connection will be stuck in OpenBusy state. The commented out try-catch
// block doesn't really help because a ThreadAbort during the finally block
// would just refert the connection to a bad state.
// Open->Closed: guarantee internal connection is returned to correct pool
if (connectionFactory.SetInnerConnectionFrom(owningObject, DbConnectionOpenBusy.SingletonInstance, this)) {
// Lock to prevent race condition with cancellation
lock (this) {
object lockToken = ObtainAdditionalLocksForClose();
try {
PrepareForCloseConnection();
DbConnectionPool connectionPool = Pool;
// Detach from enlisted transactions that are no longer active on close
DetachCurrentTransactionIfEnded();
// The singleton closed classes won't have owners and
// connection pools, and we won't want to put them back
// into the pool.
if (null != connectionPool) {
connectionPool.PutObject(this, owningObject); // PutObject calls Deactivate for us...
// NOTE: Before we leave the PutObject call, another
// thread may have already popped the connection from
// the pool, so don't expect to be able to verify it.
}
else {
Deactivate(); // ensure we de-activate non-pooled connections, or the data readers and transactions may not get cleaned up...
PerformanceCounters.HardDisconnectsPerSecond.Increment();
// To prevent an endless recursion, we need to clear
// the owning object before we call dispose so that
// we can't get here a second time... Ordinarily, I
// would call setting the owner to null a hack, but
// this is safe since we're about to dispose the
// object and it won't have an owner after that for
// certain.
_owningObject.Target = null;
if (IsTransactionRoot) {
SetInStasis();
}
else {
PerformanceCounters.NumberOfNonPooledConnections.Decrement();
if (this.GetType() != typeof(System.Data.SqlClient.SqlInternalConnectionSmi))
{
Dispose();
}
}
}
}
finally {
ReleaseAdditionalLocksForClose(lockToken);
// if a ThreadAbort puts us here then its possible the outer connection will not reference
// this and this will be orphaned, not reclaimed by object pool until outer connection goes out of scope.
connectionFactory.SetInnerConnectionEvent(owningObject, DbConnectionClosedPreviouslyOpened.SingletonInstance);
}
}
}
}
internal virtual void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory)
{
// The implementation here is the implementation required for the
// "open" internal connections, since our own private "closed"
// singleton internal connection objects override this method to
// prevent anything funny from happening (like disposing themselves
// or putting them into a connection pool)
//
// Derived class should override DbConnectionInternal.Deactivate and DbConnectionInternal.Dispose
// for cleaning up after DbConnection.Close
// protected override void Deactivate() { // override DbConnectionInternal.Close
// // do derived class connection deactivation for both pooled & non-pooled connections
// }
// public override void Dispose() { // override DbConnectionInternal.Close
// // do derived class cleanup
// base.Dispose();
// }
//
// overriding DbConnection.Close is also possible, but must provider for their own synchronization
// public override void Close() { // override DbConnection.Close
// base.Close();
// // do derived class outer connection for both pooled & non-pooled connections
// // user must do their own synchronization here
// }
//
// if the DbConnectionInternal derived class needs to close the connection it should
// delegate to the DbConnection if one exists or directly call dispose
// DbConnection owningObject = (DbConnection)Owner;
// if (null != owningObject) {
// owningObject.Close(); // force the closed state on the outer object.
// }
// else {
// Dispose();
// }
//
////////////////////////////////////////////////////////////////
// DON'T MESS WITH THIS CODE UNLESS YOU KNOW WHAT YOU'RE DOING!
////////////////////////////////////////////////////////////////
Debug.Assert(null != owningObject, "null owningObject");
Debug.Assert(null != connectionFactory, "null connectionFactory");
// if an exception occurs after the state change but before the try block
// the connection will be stuck in OpenBusy state. The commented out try-catch
// block doesn't really help because a ThreadAbort during the finally block
// would just revert the connection to a bad state.
// Open->Closed: guarantee internal connection is returned to correct pool
if (connectionFactory.SetInnerConnectionFrom(owningObject, DbConnectionOpenBusy.SingletonInstance, this))
{
// Lock to prevent race condition with cancellation
lock (this)
{
object lockToken = ObtainAdditionalLocksForClose();
try
{
PrepareForCloseConnection();
DbConnectionPool connectionPool = Pool;
// Detach from enlisted transactions that are no longer active on close
DetachCurrentTransactionIfEnded();
// The singleton closed classes won't have owners and
// connection pools, and we won't want to put them back
// into the pool.
if (null != connectionPool)
{
connectionPool.PutObject(this, owningObject); // PutObject calls Deactivate for us...
// NOTE: Before we leave the PutObject call, another
// thread may have already popped the connection from
// the pool, so don't expect to be able to verify it.
}
else
{
Deactivate(); // ensure we de-activate non-pooled connections, or the data readers and transactions may not get cleaned up...
PerformanceCounters.HardDisconnectsPerSecond.Increment();
// To prevent an endless recursion, we need to clear
// the owning object before we call dispose so that
// we can't get here a second time... Ordinarily, I
// would call setting the owner to null a hack, but
// this is safe since we're about to dispose the
// object and it won't have an owner after that for
// certain.
_owningObject.Target = null;
if (IsTransactionRoot)
{
SetInStasis();
}
else
{
PerformanceCounters.NumberOfNonPooledConnections.Decrement();
Dispose();
}
}
}
finally
{
ReleaseAdditionalLocksForClose(lockToken);
// if a ThreadAbort puts us here then its possible the outer connection will not reference
// this and this will be orphaned, not reclaimed by object pool until outer connection goes out of scope.
connectionFactory.SetInnerConnectionEvent(owningObject, DbConnectionClosedPreviouslyOpened.SingletonInstance);
}
}
}
}
internal virtual void OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) {
if (!TryOpenConnection(outerConnection, connectionFactory, null, null)) {
throw ADP.InternalError(ADP.InternalErrorCode.SynchronousConnectReturnedPending);
}
}
internal SqlConnection (DbConnectionFactory connectionFactory) : base (connectionFactory)
{
Init (String.Empty);
}
internal virtual bool TryReplaceConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource<DbConnectionInternal> retry, DbConnectionOptions userOptions) {
throw ADP.MethodNotImplemented("TryReplaceConnection");
}
internal override void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory)
{
if (!base.IsConnectionDoomed)
{
this.ClearPreparedCommands();
}
base.CloseConnection(owningObject, connectionFactory);
}
internal override void OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
{
throw ADP.ConnectionAlreadyOpen(base.State);
}
internal override void CloseConnection(DbConnection owningObject, DbConnectionFactory connectionFactory)
{
connectionFactory.SetInnerConnectionTo(owningObject, DbConnectionClosedPreviouslyOpened.SingletonInstance);
}
// only created by DbConnectionPoolGroup.GetConnectionPool
internal DbConnectionPool(
DbConnectionFactory connectionFactory,
DbConnectionPoolGroup connectionPoolGroup,
DbConnectionPoolIdentity identity,
DbConnectionPoolProviderInfo connectionPoolProviderInfo)
{
Debug.Assert(null != connectionPoolGroup, "null connectionPoolGroup");
if ((null != identity) && identity.IsRestricted)
{
throw ADP.InternalError(ADP.InternalErrorCode.AttemptingToPoolOnRestrictedToken);
}
_state = State.Initializing;
lock (s_random)
{ // Random.Next is not thread-safe
_cleanupWait = s_random.Next(12, 24) * 10 * 1000; // 2-4 minutes in 10 sec intervals
}
_connectionFactory = connectionFactory;
_connectionPoolGroup = connectionPoolGroup;
_connectionPoolGroupOptions = connectionPoolGroup.PoolGroupOptions;
_connectionPoolProviderInfo = connectionPoolProviderInfo;
_identity = identity;
_waitHandles = new PoolWaitHandles();
_errorWait = ERROR_WAIT_DEFAULT;
_errorTimer = null; // No error yet.
_objectList = new List<DbConnectionInternal>(MaxPoolSize);
_poolCreateRequest = new WaitCallback(PoolCreateRequest); // used by CleanupCallback
_state = State.Running;
//_cleanupTimer & QueuePoolCreateRequest is delayed until DbConnectionPoolGroup calls
// StartBackgroundCallbacks after pool is actually in the collection
}
protected DbConnectionBase(DbConnectionFactory connectionFactory)
{
this.connectionFactory = connectionFactory;
}
