/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!_isDisposed)
{
ExportProvider?rootProvider = null;
IDisposable? disposableAncestorExportProvider = null;
IDisposable? disposableLocalExportProvider = null;
IDisposable? disposableRootProvider = null;
ComposablePartExportProvider?partExportProvider = null;
CatalogExportProvider? catalogExportProvider = null;
ImportEngine?importEngine = null;
lock (_lock)
{
if (!_isDisposed)
{
rootProvider = _rootProvider;
_rootProvider = null !;
disposableRootProvider = _disposableRootProvider;
_disposableRootProvider = null;
disposableLocalExportProvider = _disposableLocalExportProvider;
_disposableLocalExportProvider = null;
_localExportProvider = null !;
disposableAncestorExportProvider = _disposableAncestorExportProvider;
_disposableAncestorExportProvider = null;
_ancestorExportProvider = null;
partExportProvider = _partExportProvider;
_partExportProvider = null !;
catalogExportProvider = _catalogExportProvider;
_catalogExportProvider = null;
importEngine = _importEngine;
_importEngine = null;
_isDisposed = true;
}
}
if (rootProvider != null)
{
rootProvider.ExportsChanged -= OnExportsChangedInternal;
rootProvider.ExportsChanging -= OnExportsChangingInternal;
}
disposableRootProvider?.Dispose();
disposableAncestorExportProvider?.Dispose();
disposableLocalExportProvider?.Dispose();
catalogExportProvider?.Dispose();
partExportProvider?.Dispose();
importEngine?.Dispose();
}
}
}
/// <summary>
/// Sets the imports of the specified composable part exactly once and they will not
/// ever be recomposed.
/// </summary>
/// <param name="part">
/// The <see cref="ComposablePart"/> to set the imports.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="part"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="CompositionException">
/// An error occurred during composition. <see cref="CompositionException.Errors"/> will
/// contain a collection of errors that occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// The <see cref="ICompositionService"/> has been disposed of.
/// </exception>
public void SatisfyImportsOnce(ComposablePart part)
{
this.ThrowIfDisposed();
if (this._importEngine == null)
{
ImportEngine importEngine = new ImportEngine(this, this._isThreadSafe);
lock (this._lock)
{
if (this._importEngine == null)
{
Thread.MemoryBarrier();
this._importEngine = importEngine;
importEngine = null;
}
}
if (importEngine != null)
{
importEngine.Dispose();
}
}
this._importEngine.SatisfyImportsOnce(part);
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!_isDisposed)
{
bool disposeLock = false;
ImportEngine?importEngine = null;
try
{
using (_lock.LockStateForWrite())
{
if (!_isDisposed)
{
importEngine = _importEngine;
_importEngine = null;
_sourceProvider = null;
_isDisposed = true;
disposeLock = true;
}
}
}
finally
{
importEngine?.Dispose();
if (disposeLock)
{
_lock.Dispose();
}
}
}
}
}
/// <summary>
/// Sets the imports of the specified composable part exactly once and they will not
/// ever be recomposed.
/// </summary>
/// <param name="part">
/// The <see cref="ComposablePart"/> to set the imports.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="part"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="CompositionException">
/// An error occurred during composition. <see cref="CompositionException.Errors"/> will
/// contain a collection of errors that occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// The <see cref="ICompositionService"/> has been disposed of.
/// </exception>
public void SatisfyImportsOnce(ComposablePart part)
{
ThrowIfDisposed();
if (_importEngine == null)
{
ImportEngine?importEngine = new ImportEngine(this, _compositionOptions);
lock (_lock)
{
if (_importEngine == null)
{
Thread.MemoryBarrier();
_importEngine = importEngine;
importEngine = null;
}
}
importEngine?.Dispose();
}
_importEngine.SatisfyImportsOnce(part);
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!this._isDisposed)
{
bool disposeLock = false;
ImportEngine importEngine = null;
try
{
using (this._lock.LockStateForWrite())
{
if (!this._isDisposed)
{
importEngine = this._importEngine;
this._importEngine = null;
this._sourceProvider = null;
this._isDisposed = true;
disposeLock = true;
}
}
}
finally
{
if (importEngine != null)
{
importEngine.Dispose();
}
if (disposeLock)
{
this._lock.Dispose();
}
}
}
}
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!_isDisposed)
{
//Note: We do not dispose _lock on dispose because DisposePart needs it to check isDisposed state
// to eliminate race conditions between it and Dispose
INotifyComposablePartCatalogChanged catalogToUnsubscribeFrom = null;
HashSet <IDisposable> partsToDispose = null;
ImportEngine importEngine = null;
ExportProvider sourceProvider = null;
AggregateExportProvider aggregateExportProvider = null;
try
{
using (_lock.LockStateForWrite())
{
if (!_isDisposed)
{
catalogToUnsubscribeFrom = _catalog as INotifyComposablePartCatalogChanged;
_catalog = null;
aggregateExportProvider = _innerExportProvider as AggregateExportProvider;
_innerExportProvider = null;
sourceProvider = _sourceProvider;
_sourceProvider = null;
importEngine = _importEngine;
_importEngine = null;
partsToDispose = _partsToDispose;
_gcRoots = null;
_isDisposed = true;
}
}
}
finally
{
if (catalogToUnsubscribeFrom != null)
{
catalogToUnsubscribeFrom.Changing -= OnCatalogChanging;
}
if (aggregateExportProvider != null)
{
aggregateExportProvider.Dispose();
}
if (sourceProvider != null)
{
sourceProvider.ExportsChanging -= OnExportsChangingInternal;
}
if (importEngine != null)
{
importEngine.Dispose();
}
if (partsToDispose != null)
{
foreach (var part in partsToDispose)
{
part.Dispose();
}
}
}
}
}
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!this._isDisposed)
{
ExportProvider rootProvider = null;
AggregateExportProvider aggregatingExportProvider = null;
ComposablePartExportProvider partExportProvider = null;
CatalogExportProvider catalogExportProvider = null;
ImportEngine importEngine = null;
lock (this._lock)
{
if (!this._isDisposed)
{
rootProvider = this._rootProvider;
this._rootProvider = null;
aggregatingExportProvider = this._aggregatingExportProvider;
this._aggregatingExportProvider = null;
partExportProvider = this._partExportProvider;
this._partExportProvider = null;
catalogExportProvider = this._catalogExportProvider;
this._catalogExportProvider = null;
importEngine = this._importEngine;
this._importEngine = null;
this._isDisposed = true;
}
}
if (rootProvider != null)
{
rootProvider.ExportsChanged -= this.OnExportsChangedInternal;
rootProvider.ExportsChanging -= this.OnExportsChangingInternal;
}
if (aggregatingExportProvider != null)
{
aggregatingExportProvider.Dispose();
}
if (catalogExportProvider != null)
{
catalogExportProvider.Dispose();
}
if (partExportProvider != null)
{
partExportProvider.Dispose();
}
if (importEngine != null)
{
importEngine.Dispose();
}
}
}
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!this._isDisposed)
{
bool disposeLock = false;
INotifyComposablePartCatalogChanged catalogToUnsubscribeFrom = null;
HashSet <IDisposable> partsToDispose = null;
ImportEngine importEngine = null;
ExportProvider sourceProvider = null;
try
{
using (this._lock.LockStateForWrite())
{
if (!this._isDisposed)
{
catalogToUnsubscribeFrom = this._catalog as INotifyComposablePartCatalogChanged;
this._catalog = null;
sourceProvider = this._sourceProvider;
this._sourceProvider = null;
importEngine = this._importEngine;
this._importEngine = null;
partsToDispose = this._partsToDispose;
this._gcRoots = null;
disposeLock = true;
this._isDisposed = true;
}
}
}
finally
{
if (catalogToUnsubscribeFrom != null)
{
catalogToUnsubscribeFrom.Changing -= this.OnCatalogChanging;
}
if (sourceProvider != null)
{
sourceProvider.ExportsChanging -= this.OnExportsChangingInternal;
}
if (importEngine != null)
{
importEngine.Dispose();
}
if (partsToDispose != null)
{
foreach (var part in partsToDispose)
{
part.Dispose();
}
}
if (disposeLock)
{
this._lock.Dispose();
}
}
}
}
}
