add from giga-device, new branch added

StgSharp.Common/PipeLine/PipelineNodePort.cs

@@ -0,0 +1,190 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="PipelineNodePort.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.ExceptionServices;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace StgSharp.PipeLine
+{
+    public class PipelineNodeInPort
+    {
+
+        private HashSet<PipelineNodeOutPort> _linkerSet = new HashSet<PipelineNodeOutPort>();
+
+        public PipelineNodeInPort( PipelineNode container, string label )
+        {
+            Container = container;
+            Label = label;
+        }
+
+        public IEnumerable<PipelineNodeOutPort> LinkedPorts => _linkerSet;
+
+        public PipelineNode Container { get; init; }
+
+        public SemaphoreSlim Waiter { get; init; }
+
+        public string Label { get; init; }
+
+        internal HashSet<PipelineNodeOutPort> Linkers => _linkerSet;
+
+        public void Connect( PipelineNodeOutPort port )
+        {
+            ArgumentNullException.ThrowIfNull( port );
+            if( _linkerSet.Add( port ) )
+            {
+                port.Linkers.Add( this );
+                Container.Previous.Add( port.Container );
+                port.Container.Next.Add( Container );
+            }
+        }
+
+        public IEnumerator<PipelineNode> GetFormerNodes()
+        {
+            foreach( PipelineNodeOutPort port in _linkerSet ) {
+                yield return port.Container;
+            }
+        }
+
+        public void Wait()
+        {
+            PipelineNodeOutPort.WaitAll( _linkerSet );
+        }
+
+        public static void WaitAll( IDictionary<string, PipelineNodeInPort> ports )
+        {
+            if( ports is null ) {
+                return;
+            }
+            foreach( PipelineNodeInPort port in ports.Values ) {
+                port.Wait();
+            }
+        }
+
+        public static void WaitAll( IEnumerable<PipelineNodeInPort> ports )
+        {
+            if( ports is null ) {
+                return;
+            }
+            foreach( PipelineNodeInPort port in ports ) {
+                port.Wait();
+            }
+        }
+
+    }
+
+    public class PipelineNodeOutPort
+    {
+
+        private HashSet<PipelineNodeInPort> _linkerSet = new HashSet<PipelineNodeInPort>();
+        private volatile int _passCount;
+        private SemaphoreSlim formerCompleteSemaphore;
+
+        public PipelineNodeOutPort( PipelineNode container, string label )
+        {
+            Container = container;
+            Label = label;
+            formerCompleteSemaphore = new SemaphoreSlim( initialCount: 0, maxCount: 1 );
+        }
+
+        public PipelineNode Container { get; init; }
+
+        public string Label { get; init; }
+
+        internal HashSet<PipelineNodeInPort> Linkers => _linkerSet;
+
+        private SemaphoreSlim Waiter => formerCompleteSemaphore;
+
+        public void Connect( PipelineNodeInPort port )
+        {
+            ArgumentNullException.ThrowIfNull( port );
+            if( _linkerSet.Add( port ) )
+            {
+                port.Linkers.Add( this );
+                Container.Next.Add( port.Container );
+                port.Container.Previous.Add( Container );
+            }
+        }
+
+        public void Release()
+        {
+            if( _passCount == 0 )
+            {
+                Waiter.Release();
+            } else
+            {
+                return;
+            }
+        }
+
+        public static void SkipAll( Dictionary<string, PipelineNodeOutPort> ports )
+        {
+            if( ports is null ) {
+                return;
+            }
+            foreach( PipelineNodeOutPort port in ports.Values ) {
+                port.Release();
+            }
+        }
+
+        public void TransmitValue( IPipeLineConnectionPayload value )
+        {
+            foreach( PipelineNodeInPort item in _linkerSet ) { }
+        }
+
+        public static void WaitAll( IEnumerable<PipelineNodeOutPort> ports )
+        {
+            if( ports is null ) {
+                return;
+            }
+            foreach( PipelineNodeOutPort port in ports ) {
+                port.Wait();
+            }
+        }
+
+        internal void Wait()
+        {
+            Waiter.Wait();
+            if( _passCount >= _linkerSet.Count )
+            {
+                Interlocked.Exchange( ref _passCount, 0 );
+            } else
+            {
+                Interlocked.Increment( ref _passCount );
+                Waiter.Release();
+            }
+        }
+
+    }
+}