| private PrePush ( object expectedOwner ) : void | ||
| expectedOwner | object | |
| Результат | void | |
private PooledStream Create(CreateConnectionDelegate createConnectionCallback)
{
PooledStream stream = null;
try
{
stream = createConnectionCallback(this);
if (stream == null)
{
throw new InternalException();
}
if (!stream.CanBePooled)
{
throw new InternalException();
}
stream.PrePush(null);
lock (this.m_ObjectList.SyncRoot)
{
this.m_ObjectList.Add(stream);
this.m_TotalObjects = this.m_ObjectList.Count;
}
}
catch (Exception exception)
{
stream = null;
this.m_ResError = exception;
this.Abort();
}
return(stream);
}
/// <devdoc>
/// <para>
/// Attempts to return a PooledStream to the pool. If canReuse is false, then the
/// connection will be destroyed even if it is marked as reusable and a new conneciton will
/// be created. If it is true, then the connection will still be checked to ensure that
/// it can be pooled and will be cleaned up if it can not for another reason.
/// </para>
/// </devdoc>
internal void PutConnection(PooledStream pooledStream, object owningObject, int creationTimeout, bool canReuse)
{
GlobalLog.Print("ConnectionPool#" + ValidationHelper.HashString(this) + "::PutConnection");
if (pooledStream == null)
{
throw new ArgumentNullException("pooledStream");
}
pooledStream.PrePush(owningObject);
if (m_State != State.ShuttingDown)
{
pooledStream.Deactivate();
// cancel our error status, if we have no new requests waiting anymore
if (m_WaitCount == 0)
{
CancelErrorCallback();
}
if (canReuse && pooledStream.CanBePooled)
{
PutNew(pooledStream);
}
else
{
try {
Destroy(pooledStream);
} finally { // Make sure to release the mutex even under error conditions.
// Make sure we recreate a new pooled stream, if there are requests for a stream
// at this point
if (m_WaitCount > 0)
{
if (!CreationMutex.WaitOne(creationTimeout, false))
{
Abort();
}
else
{
try {
pooledStream = UserCreateRequest();
if (null != pooledStream)
{
PutNew(pooledStream);
}
} finally {
CreationMutex.ReleaseMutex();
}
}
}
}
}
}
else
{
// If we're shutting down, we destroy the object.
Destroy(pooledStream);
}
}
internal void PutConnection(PooledStream pooledStream, object owningObject, int creationTimeout, bool canReuse)
{
if (pooledStream == null)
{
throw new ArgumentNullException("pooledStream");
}
pooledStream.PrePush(owningObject);
if (this.m_State != State.ShuttingDown)
{
pooledStream.Deactivate();
if (this.m_WaitCount == 0)
{
this.CancelErrorCallback();
}
if (canReuse && pooledStream.CanBePooled)
{
this.PutNew(pooledStream);
}
else
{
this.Destroy(pooledStream);
if (this.m_WaitCount > 0)
{
if (!this.CreationMutex.WaitOne(creationTimeout, false))
{
this.Abort();
}
else
{
try
{
pooledStream = this.UserCreateRequest();
if (pooledStream != null)
{
this.PutNew(pooledStream);
}
}
finally
{
this.CreationMutex.ReleaseMutex();
}
}
}
}
}
else
{
this.Destroy(pooledStream);
}
}
/// <summary>
/// <para>Creates a new PooledStream, performs checks as well on the new stream</para>
/// </summary>
private PooledStream Create(CreateConnectionDelegate createConnectionCallback)
{
GlobalLog.Enter("ConnectionPool#" + ValidationHelper.HashString(this) + "::Create");
PooledStream newObj = null;
try {
newObj = createConnectionCallback(this);
if (null == newObj)
{
throw new InternalException(); // Create succeeded, but null object
}
if (!newObj.CanBePooled)
{
throw new InternalException(); // Create succeeded, but non-poolable object
}
newObj.PrePush(null);
lock (m_ObjectList.SyncRoot) {
m_ObjectList.Add(newObj);
m_TotalObjects = m_ObjectList.Count;
}
GlobalLog.Print("Create pooledStream#" + ValidationHelper.HashString(newObj));
}
catch (Exception e) {
GlobalLog.Print("Pool Exception: " + e.Message);
newObj = null; // set to null, so we do not return bad new object
// Failed to create instance
m_ResError = e;
Abort();
}
catch {
GlobalLog.Print("Pool Exception: Non-CLS Compliant Exception");
newObj = null; // set to null, so we do not return bad new object
// Failed to create instance
m_ResError = new Exception(SR.GetString(SR.net_nonClsCompliantException));
Abort();
}
GlobalLog.Leave("ConnectionPool#" + ValidationHelper.HashString(this) + "::Create", ValidationHelper.HashString(newObj));
return(newObj);
}
/// <devdoc>
/// <para>Attempts to return a PooledStream to the pool</para>
/// </devdoc>
internal void PutConnection(PooledStream pooledStream, object owningObject, int creationTimeout) {
GlobalLog.Print("ConnectionPool#" + ValidationHelper.HashString(this) + "::PutConnection");
if (pooledStream == null) {
throw new ArgumentNullException("pooledStream");
}
pooledStream.PrePush(owningObject);
if (m_State != State.ShuttingDown) {
pooledStream.Deactivate();
// cancel our error status, if we have no new requests waiting anymore
if (m_WaitCount == 0) {
CancelErrorCallback();
}
if (pooledStream.CanBePooled) {
PutNew(pooledStream);
}
else {
Destroy(pooledStream);
// Make sure we recreate a new pooled stream, if there are requests for a stream
// at this point
if (m_WaitCount > 0) {
if (!CreationMutex.WaitOne(creationTimeout, false)) {
Abort();
} else {
try {
pooledStream = UserCreateRequest();
if (null != pooledStream) {
PutNew(pooledStream);
}
} finally {
CreationMutex.ReleaseMutex();
}
}
}
}
}
else {
// If we're shutting down, we destroy the object.
Destroy(pooledStream);
}
}
internal void PutConnection(PooledStream pooledStream, object owningObject, int creationTimeout, bool canReuse)
{
if (pooledStream == null)
{
throw new ArgumentNullException("pooledStream");
}
pooledStream.PrePush(owningObject);
if (this.m_State != State.ShuttingDown)
{
pooledStream.Deactivate();
if (this.m_WaitCount == 0)
{
this.CancelErrorCallback();
}
if (canReuse && pooledStream.CanBePooled)
{
this.PutNew(pooledStream);
}
else
{
this.Destroy(pooledStream);
if (this.m_WaitCount > 0)
{
if (!this.CreationMutex.WaitOne(creationTimeout, false))
{
this.Abort();
}
else
{
try
{
pooledStream = this.UserCreateRequest();
if (pooledStream != null)
{
this.PutNew(pooledStream);
}
}
finally
{
this.CreationMutex.ReleaseMutex();
}
}
}
}
}
else
{
this.Destroy(pooledStream);
}
}