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A Mixed-Mode Stackwalk with the IDebugClient Interface

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22 Apr 2012Ms-PL12 min read 41.6K   1.4K   30  
A native stackwalk funtion like Stackwalk64 cannot handle mixed-mode stacks, since managed code does not use the stack in the same way as native code does. There is an API called IDebugClient, that does walk a mixed-mode stack correctly, which we will explore.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ManagedLib0
{
    public class A
    {
        public static int Add_A(int a)
        {
            var process = System.Diagnostics.Process.GetCurrentProcess();
            System.Console.WriteLine("Current Process Id #" + process.Id);

            System.Console.WriteLine("---- StackTrace ----");
            StackTraceLibrary.StackTraceHelper.DumpStackTrace();

            System.Console.WriteLine("---- StackWalk64 ----");
            
            MixedStackTraceLibrary.StackWalk64Trace.DumpStackTrace();

            var s = Win32Imports.ReadLine();
            int c = s.Length;
            return a * c;
        }
    }

}

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License

This article, along with any associated source code and files, is licensed under The Microsoft Public License (Ms-PL)


Written By
Architect Visma Software AB
Sweden Sweden
Mattias works at Visma, a leading Nordic ERP solution provider. He has good knowledge in C++/.Net development, test tool development, and debugging. His great passion is memory dump analysis. He likes giving talks and courses.

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