DebugController.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / Debugger / DebugController.cs / 1305376 / DebugController.cs
                        

                        
                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------

namespace System.Activities.Debugger 
{
    using System; 
    using System.Activities.Hosting; 
    using System.Collections.Generic;
    using System.Diagnostics; 
    using System.Diagnostics.CodeAnalysis;
    using System.Linq.Expressions;
    using System.Runtime;
    using System.Activities.Validation; 

    // DebugController, one is needed per ActivityExecutor. 
    [DebuggerNonUserCode] 
    class DebugController
    { 
        WorkflowInstance host;
        DebugManager debugManager;  // Instantiated after first instrumentation is successful.

        public DebugController(WorkflowInstance host) 
        {
            this.host = host; 
        } 

        public void WorkflowStarted() 
        {
        }

        public void WorkflowCompleted() 
        {
            if (this.debugManager != null) 
            { 
                this.debugManager.Exit();
                this.debugManager = null; 
            }
        }

        public void ActivityStarted(ActivityInstance activityInstance) 
        {
            if (!(activityInstance.Activity.RootActivity is Constraint))  // Don't debug an activity in a Constraint 
            { 
                EnsureActivityInstrumented(activityInstance, false);
                this.debugManager.OnEnterState(activityInstance); 
            }
        }

        public void ActivityCompleted(ActivityInstance activityInstance) 
        {
            if (!(activityInstance.Activity.RootActivity is Constraint)) // Don't debug an activity in a Constraint 
            { 
                EnsureActivityInstrumented(activityInstance, true);
                this.debugManager.OnLeaveState(activityInstance); 
            }
        }

        // Lazy instrumentation. 
        // Parameter primeCurrentInstance specify whether priming (if needed) is done
        // up to the current instance.  Set this to true when calling this from an "...Completed" 
        // (exit state). 
        void EnsureActivityInstrumented(ActivityInstance instance, bool primeCurrentInstance)
        { 
            if (this.debugManager == null)
            {   // Workflow has not been instrumented yet.

                // Finding rootInstance and check all referred sources. 
                Stack ancestors = new Stack();
                while (instance.Parent != null) 
                { 
                    ancestors.Push(instance);
                    instance = instance.Parent; 
                }

                Activity rootActivity = instance.Activity;
 
                // Do breakOnStartup only if debugger is attached from the beginning, i.e. no priming needed.
                // This specified by change the last parameter below to: "(ancestors.Count == 0)". 
                this.debugManager = new DebugManager(rootActivity, "Workflow", "Workflow", "DebuggerThread", false, this.host, ancestors.Count == 0); 

                if (ancestors.Count > 0) 
                {
                    // Priming the background thread
                    this.debugManager.IsPriming = true;
                    while (ancestors.Count > 0) 
                    {
                        ActivityInstance ancestorInstance = ancestors.Pop(); 
                        this.debugManager.OnEnterState(ancestorInstance); 
                    }
                    if (primeCurrentInstance) 
                    {
                        this.debugManager.OnEnterState(instance);
                    }
                    this.debugManager.IsPriming = false; 
                }
            } 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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