Timerix/DTLib.Demystifier
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This commit is contained in:
Ben Adams 2017-11-13 12:14:24 +00:00
parent 5eb9c25574
commit f250bdef96
7 changed files with 84 additions and 35 deletions
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9
sample/StackTrace/Program.cs
View File

@ -16,9 +16,11 @@ class Program
}
catch (Exception ex)
{
Console.WriteLine(ex);
exception = ex.Demystify();
}
Console.WriteLine();
Console.WriteLine(exception);
}
@ -64,7 +66,12 @@ class Program
[MethodImpl(MethodImplOptions.NoOptimization | MethodImplOptions.NoInlining)]
static async Task<string> MethodAsync<TValue>(TValue value)
{
return await MethodAsync(1);
return await MethodLocalAsync();
async Task<string> MethodLocalAsync()
{
return await MethodAsync(1);
}
}
[MethodImpl(MethodImplOptions.NoOptimization | MethodImplOptions.NoInlining)]

50
src/Ben.Demystifier/EnhancedStackTrace.Frames.cs
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@ -12,6 +12,7 @@ using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.ExceptionServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace System.Diagnostics
@ -162,7 +163,7 @@ namespace System.Diagnostics
// ResolveStateMachineMethod may have set declaringType to null
if (type != null)
{
var declaringTypeName = TypeNameHelper.GetTypeDisplayName(type, fullName: true, includeGenericParameterNames: true);
var declaringTypeName = TypeNameHelper.GetTypeDisplayName(type, fullName: true, includeGenericParameterNames: true);
methodDisplayInfo.DeclaringTypeName = declaringTypeName;
}
@ -297,6 +298,17 @@ namespace System.Diagnostics
candidateConstructors = dt.GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly).Where(m => m.Name == matchName);
if (TryResolveSourceMethod(candidateConstructors, kind, matchHint, ref method, ref type, out ordinal)) return true;
if (methodName == ".cctor")
{
candidateConstructors = dt.GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.DeclaredOnly).Where(m => m.Name == matchName);
foreach (var cctor in candidateConstructors)
{
method = cctor;
type = dt;
return true;
}
}
return false;
}
@ -321,7 +333,6 @@ namespace System.Diagnostics
}
}
var rawIL = nethodBody?.GetILAsByteArray();
if (rawIL == null) continue;
@ -342,23 +353,15 @@ namespace System.Diagnostics
return true;
}
}
else if (reader.Operand is Type t)
{
if (t == type)
{
method = candidateMethod;
type = method.DeclaringType;
return true;
}
}
}
}
return false;
}
private static void GetOrdinal(MethodBase method, ref int? ordinal)
{
var lamdaStart = method.Name.IndexOf((char) GeneratedNameKind.LambdaMethod + "__") + 3;
var lamdaStart = method.Name.IndexOf((char)GeneratedNameKind.LambdaMethod + "__") + 3;
if (lamdaStart > 3)
{
var secondStart = method.Name.IndexOf("_", lamdaStart) + 1;
@ -584,7 +587,28 @@ namespace System.Diagnostics
{
return false;
}
if (type == typeof(Task) && method.Name == "ExecuteWithThreadLocal")
if (type == typeof(Task))
{
switch (method.Name)
{
case "ExecuteWithThreadLocal":
case "Execute":
case "ExecutionContextCallback":
case "ExecuteEntry":
case "InnerInvoke":
return false;
}
}
if (type == typeof(ExecutionContext))
{
switch (method.Name)
{
case "RunInternal":
case "Run":
return false;
}
}
if (type.Namespace == "System.Threading" && (type.Name?.StartsWith("_") ?? false))
{
return false;
}

20
src/Ben.Demystifier/Internal/ILReader.cs
View File

@ -19,7 +19,7 @@ namespace System.Diagnostics.Internal
public OpCode OpCode { get; private set; }
public int MetadataToken { get; private set; }
public object Operand { get; private set; }
public MemberInfo Operand { get; private set; }
public bool Read(MethodBase methodInfo)
{
@ -35,13 +35,13 @@ namespace System.Diagnostics.Internal
OpCode ReadOpCode()
{
byte instruction = ReadByte();
if (instruction != 254)
if (instruction < 254)
return singleByteOpCode[instruction];
else
return doubleByteOpCode[ReadByte()];
}
object ReadOperand(OpCode code, MethodBase methodInfo)
MemberInfo ReadOperand(OpCode code, MethodBase methodInfo)
{
MetadataToken = 0;
switch (code.OperandType)
@ -50,11 +50,23 @@ namespace System.Diagnostics.Internal
MetadataToken = ReadInt();
Type[] methodArgs = null;
if (methodInfo.GetType() != typeof(ConstructorInfo) && !methodInfo.GetType().IsSubclassOf(typeof(ConstructorInfo)))
{
methodArgs = methodInfo.GetGenericArguments();
}
Type[] typeArgs = null;
if (methodInfo.DeclaringType != null)
{
typeArgs = methodInfo.DeclaringType.GetGenericArguments();
return methodInfo.Module.ResolveMember(MetadataToken, typeArgs, methodArgs);
}
try
{
return methodInfo.Module.ResolveMember(MetadataToken, typeArgs, methodArgs);
}
catch
{
// Can return System.ArgumentException : Token xxx is not a valid MemberInfo token in the scope of module xxx.dll
return null;
}
}
return null;
}

2
test/Ben.Demystifier.Test/Ben.Demystifier.Test.csproj
View File

@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netcoreapp2.0</TargetFramework>
<TargetFrameworks>netcoreapp2.0;net46</TargetFrameworks>
<IsPackable>false</IsPackable>
</PropertyGroup>

2
test/Ben.Demystifier.Test/DynamicCompilation.cs
View File

@ -38,7 +38,7 @@ namespace Demystify
// Assert
var stackTrace = demystifiedException.ToString();
stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
var trace = stackTrace.Split(Environment.NewLine)
var trace = stackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.None)
// Remove items that vary between test runners
.Where(s =>
s != " at void System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, object state)" &&

22
test/Ben.Demystifier.Test/MixedStack.cs
View File

@ -22,16 +22,21 @@ namespace Demystify
stackFrame => stackFrame.MethodInfo.ToString()
)
// Remove Framework method that can be optimized out (inlined)
.Where(methodName => methodName != "System.Collections.Generic.List<T>+Enumerator.MoveNext()")
// Don't include this method as call stack shared between multiple tests
.SkipLast(1);
.Where(methodName => !methodName.StartsWith("bool System.Collections.Generic.List<T>+"));
var count = methodNames.Count();
methodNames = methodNames.Take(count - 1);
foreach (var method in methodNames)
{
Console.WriteLine(method.ToString());
}
// Assert
Assert.Equal (ExpectedCallStack, methodNames.ToList());
var expected = ExpectedCallStack.ToArray();
var trace = methodNames.ToArray();
Assert.Equal(expected.Length, trace.Length);
for (var i = 0; i < expected.Length; i++)
{
Assert.Equal(expected[i], trace[i]);
}
}
@ -52,7 +57,6 @@ namespace Demystify
static List<string> ExpectedCallStack = new List<string>()
{
"bool System.Collections.Generic.List<T>+Enumerator.MoveNextRare()",
"IEnumerable<string> Demystify.MixedStack.Iterator()+MoveNext()",
"string string.Join(string separator, IEnumerable<string> values)",
"string Demystify.MixedStack+GenericClass<T>.GenericMethod<V>(ref V value)",

14
test/Ben.Demystifier.Test/NonThrownException.cs
View File

@ -1,5 +1,6 @@
using System;
using System.Diagnostics;
using System.Linq;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Xunit;
@ -28,13 +29,12 @@ namespace Demystify
// Assert
var stackTrace = demystifiedException.ToString();
stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
var trace = stackTrace.Split(Environment.NewLine);
var trace = stackTrace.Split(new[]{Environment.NewLine}, StringSplitOptions.None);
Assert.Equal(
new[] {
"System.Exception: Exception of type 'System.Exception' was thrown. ---> System.Exception: Exception of type 'System.Exception' was thrown.",
" at Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()+()=>{}",
" at void System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, object state)",
" at async Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()",
" --- End of inner exception stack trace ---"},
trace);
@ -52,13 +52,12 @@ namespace Demystify
// Assert
stackTrace = demystifiedException.ToString();
stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
trace = stackTrace.Split(Environment.NewLine);
trace = stackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
Assert.Equal(
new[] {
"System.Exception: Exception of type 'System.Exception' was thrown. ---> System.Exception: Exception of type 'System.Exception' was thrown.",
" at Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()+()=>{}",
" at void System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, object state)",
" at async Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()",
" --- End of inner exception stack trace ---",
" at async Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()"
@ -78,11 +77,14 @@ namespace Demystify
// Assert
var stackTrace = est.ToString();
stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
var trace = stackTrace.Split(Environment.NewLine);
var trace = stackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.None)
// Remove Full framework entries
.Where(s => !s.StartsWith(" at bool System.Threading._ThreadPoolWaitCallbac") &&
!s.StartsWith(" at void System.Threading.Tasks.Task.System.Thre"));
Assert.Equal(
new[] {
" at void System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, object state)",
" at bool System.Threading.ThreadPoolWorkQueue.Dispatch()"},
trace);
}