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StgSharp.Common/PipeLine/Blueprint.cs

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+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="Blueprint.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.CompilerServices;
+using System.Threading;
+
+namespace StgSharp.PipeLine
+{
+    /// <summary>
+    /// A sets of complex logic designed for running in multi threads environment. Warning: do not
+    /// run a <see cref="BlueprintScheduler" /> instance in multi threads more than once.
+    /// </summary>
+    public partial class BlueprintScheduler : IConvertableToBlueprintNode
+    {
+
+        private List<PipeLineNode>[] _concurrentNodes, _mainThreadNodes;
+
+        private BeginningNode beginNode;
+        private Dictionary<string, PipeLineNode> allNode;
+        private EndingNode endNode;
+
+        private Func<bool> terminate;
+        private List<PipeLineNode> globalNodeList;
+        private List<PipeLineNode> mainThreadNodeList;
+
+        private SemaphoreSlim runningStat;
+
+        internal int currentGlobalNodeIndex;
+        internal int currentNativeNodeIndex;
+
+        public BlueprintScheduler()
+        {
+            allNode = new Dictionary<string, PipeLineNode>();
+            globalNodeList = new List<PipeLineNode>();
+            mainThreadNodeList = new List<PipeLineNode>();
+            runningStat = new SemaphoreSlim( 1, 1 );
+            beginNode = new BeginningNode( this );
+            endNode = new EndingNode( this );
+        }
+
+        public BlueprintNodeOperation Operation
+        {
+            get => ExecuteMain;
+        }
+
+        public bool IsRunning
+        {
+            get => runningStat.CurrentCount == 0;
+        }
+
+        public IEnumerable<string> InputInterfacesName
+        {
+            get { return beginNode.OutputInterfaces.Keys; }
+        }
+
+        public IEnumerable<string> OutputInterfacesName
+        {
+            get { return beginNode.OutputInterfaces.Keys; }
+        }
+
+        public PipeLineNode BeginLayer => beginNode;
+
+        public PipeLineNode EndLayer => endNode;
+
+        /**/
+
+        internal SemaphoreSlim RunningStat
+        {
+            get => runningStat;
+        }
+        /**/
+
+        public void AddNode( PipeLineNode node, bool isNative )
+        {
+            _ = node ?? throw new ArgumentNullException( nameof( node ) );
+            node.IsNative = isNative;
+            allNode.Add( node.Name, node );
+        }
+
+        public void ExecuteMain(
+                            in Dictionary<string, PipelineConnector> input,
+                            in Dictionary<string, PipelineConnector> output )
+        {
+            PipeLineRunner.Run( this );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public (string name, PipeLineConnectorArgs arg)[] GetOutput()
+        {
+            return endNode.OutputData;
+        }
+
+        public void Init()
+        {
+            foreach( KeyValuePair<string, PipeLineNode> item in allNode ) {
+                if( item.Value.IsNative ) {
+                    mainThreadNodeList.Add( item.Value );
+                } else {
+                    globalNodeList.Add( item.Value );
+                }
+            }
+            mainThreadNodeList.Sort();
+            globalNodeList.Sort();
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public void SetInput(
+                            params (string name, PipeLineConnectorArgs arg)[] parameters )
+        {
+            beginNode.InputData = parameters;
+        }
+
+        public void Terminate()
+        {
+            Interlocked.Exchange( ref currentGlobalNodeIndex, int.MaxValue );
+            Interlocked.Exchange( ref currentNativeNodeIndex, int.MaxValue );
+        }
+
+        internal bool RequestNexGlobalNode( out PipeLineNode node )
+        {
+            if( currentGlobalNodeIndex < globalNodeList.Count ) {
+                node = globalNodeList[ currentGlobalNodeIndex ];
+                Interlocked.Increment( ref currentGlobalNodeIndex );
+                return true;
+            }
+            node = default!;
+            return false;
+        }
+
+        internal bool RequestNextNativeNode( out PipeLineNode node )
+        {
+            if( currentNativeNodeIndex < mainThreadNodeList.Count ) {
+                node = mainThreadNodeList[ currentNativeNodeIndex ];
+                Interlocked.Increment( ref currentNativeNodeIndex );
+                return true;
+            }
+            node = default!;
+            return false;
+        }
+
+        ~BlueprintScheduler()
+        {
+            runningStat.Dispose();
+        }
+
+    }
+}