private void EnsureInitialized([NotNull] ClrRuntime runtime)
{
if (initialized)
{
return;
}
try
{
ClrHeap heap = runtime.GetHeap();
enumeratedTypes = new List <ClrType>();
foreach (string typename in EnumeratedTypesNames)
{
if (string.IsNullOrEmpty(typename))
{
continue;
}
ClrType tmp = heap.GetTypeByName(typename);
if (tmp == null)
{
Trace.TraceWarning("{0} type was not found in runtime.", typename);
continue;
}
enumeratedTypes.Add(tmp);
}
}
finally
{
initialized = true;
}
}
public void ArrayReferenceEnumeration()
{
using (DataTarget dt = TestTargets.Types.LoadFullDump())
{
ClrRuntime runtime = dt.ClrVersions.Single().CreateRuntime();
ClrHeap heap = runtime.Heap;
ClrAppDomain domain = runtime.AppDomains.Single();
ClrModule typesModule = runtime.GetModule("types.exe");
ClrType type = heap.GetTypeByName("Types");
ulong s_array = (ulong)type.GetStaticFieldByName("s_array").GetValue(domain);
ulong s_one = (ulong)type.GetStaticFieldByName("s_one").GetValue(domain);
ulong s_two = (ulong)type.GetStaticFieldByName("s_two").GetValue(domain);
ulong s_three = (ulong)type.GetStaticFieldByName("s_three").GetValue(domain);
ClrType arrayType = heap.GetObjectType(s_array);
List <ulong> objs = new List <ulong>();
arrayType.EnumerateRefsOfObject(s_array, (obj, offs) => objs.Add(obj));
// We do not guarantee the order in which these are enumerated.
Assert.Equal(3, objs.Count);
Assert.Contains(s_one, objs);
Assert.Contains(s_two, objs);
Assert.Contains(s_three, objs);
}
}
public void ArrayOffsetsTest()
{
using (DataTarget dt = TestTargets.Types.LoadFullDump())
{
ClrRuntime runtime = dt.ClrVersions.Single().CreateRuntime();
ClrHeap heap = runtime.Heap;
ClrAppDomain domain = runtime.AppDomains.Single();
ClrModule typesModule = runtime.GetModule("types.exe");
ClrType type = heap.GetTypeByName("Types");
ulong s_array = (ulong)type.GetStaticFieldByName("s_array").GetValue(domain);
ulong s_one = (ulong)type.GetStaticFieldByName("s_one").GetValue(domain);
ulong s_two = (ulong)type.GetStaticFieldByName("s_two").GetValue(domain);
ulong s_three = (ulong)type.GetStaticFieldByName("s_three").GetValue(domain);
ulong[] expected = new ulong[] { s_one, s_two, s_three };
ClrType arrayType = heap.GetObjectType(s_array);
for (int i = 0; i < expected.Length; i++)
{
Assert.Equal(expected[i], (ulong)arrayType.GetArrayElementValue(s_array, i));
ulong address = arrayType.GetArrayElementAddress(s_array, i);
ulong value = dt.DataReader.ReadPointerUnsafe(address);
Assert.NotEqual(0ul, address);
Assert.Equal(expected[i], value);
}
}
}
private Dictionary <int, string> GetManagedThreadNames(ClrHeap heap)
{
var result = new Dictionary <int, string>();
if (!heap.CanWalkHeap)
{
return(result);
}
var threadObjects = from obj in heap.EnumerateObjectAddresses()
let type = heap.GetObjectType(obj)
where type != null && type.Name == "System.Threading.Thread"
select obj;
var threadType = heap.GetTypeByName("System.Threading.Thread");
var nameField = threadType.GetFieldByName("m_Name");
var managedIdField = threadType.GetFieldByName("m_ManagedThreadId");
foreach (var threadObject in threadObjects)
{
string name = (string)nameField.GetValue(threadObject);
int id = (int)managedIdField.GetValue(threadObject);
result.Add(id, name);
}
return(result);
}
private DepPropertiesProvider(ulong objAddress, ClrHeap heap)
{
_targetObject = heap.GetInstance(objAddress);
_effectiveValues = _targetObject.AsDynamic._effectiveValues;
_depPropertyType = heap.GetTypeByName(DependencyPropertyTypeName);
}
public StaticField(ClrRuntime runtime, string typee, string name)
{
Domain = runtime.AppDomains.First();
ClrHeap heap = runtime.GetHeap();
ClrType type = heap.GetTypeByName(typee);
Field = type.GetStaticFieldByName(name);
Heap = runtime.GetHeap();
}
private void InitSearchedType(ClrHeap heap)
{
this._searchedType = heap.GetTypeByName(this.searchedTypeName);
Assert.Required(_searchedType, $"{searchedTypeName} was not found by name in the heap");
this._typeIndex = this._searchedType.MetadataToken;
searchedTypeSet = true;
}
private ClrObject FindFirstInstanceOfType(ClrHeap heap, string typeName)
{
var type = heap.GetTypeByName(typeName);
if (type is null)
{
throw new InvalidOperationException($"Could not find {typeName} in {TestTarget.Source} source.");
}
return(new ClrObject(heap.GetObjectsOfType(typeName).First(), type));
}
public void ArrayLengthTest()
{
using (DataTarget dt = TestTargets.Types.LoadFullDump())
{
ClrRuntime runtime = dt.ClrVersions.Single().CreateRuntime();
ClrHeap heap = runtime.Heap;
ClrAppDomain domain = runtime.AppDomains.Single();
ClrModule typesModule = runtime.GetModule("types.exe");
ClrType type = heap.GetTypeByName("Types");
ulong s_array = (ulong)type.GetStaticFieldByName("s_array").GetValue(domain);
ClrType arrayType = heap.GetObjectType(s_array);
Assert.Equal(3, arrayType.GetArrayLength(s_array));
}
}
/// <summary>
/// Gets the static field value.
/// <para> WARN - resolves value for single domain only.</para>
/// </summary>
/// <param name="runtime">The runtime.</param>
/// <param name="typeName">Name of the type.</param>
/// <param name="fieldName">Name of the field.</param>
/// <returns></returns>
/// <exception cref="ClrTypeNotFound"></exception>
public static ClrObject GetStaticFldValue(this ClrRuntime runtime, [NotNull] string typeName,
[NotNull] string fieldName)
{
Assert.ArgumentNotNullOrEmpty(typeName, "typeName");
Assert.ArgumentNotNullOrEmpty(fieldName, "fieldName");
ClrHeap heap = runtime.GetHeap();
Assert.ResultNotNull(heap, "Could not fetch heap from runtime");
ClrType type = heap.GetTypeByName(typeName);
if (type == null)
{
throw new ClrTypeNotFound(typeName);
}
return(runtime.GetStaticFldValue(type, fieldName));
}
public ClrDriver(ClrRuntime runtime)
{
(this.runtime, heap, domain) = (runtime, runtime.Heap, runtime.AppDomains[0]);
typeObject = heap.GetTypeByName("System.Object");
typeDelegate = heap.GetTypeByName("System.Delegate");
fieldDelegateTarget = typeDelegate.GetFieldByName("_target");
typeTask = heap.GetTypeByName("System.Threading.Tasks.Task");
if (typeTask.BaseType.Name == "System.Threading.Tasks.Task")
{
typeTask = typeTask.BaseType;
}
fieldTaskAction = typeTask.GetFieldByName("m_action");
fieldTaskScheduler = typeTask.GetFieldByName("m_taskScheduler");
fieldTaskContinuationObject = typeTask.GetFieldByName("m_continuationObject");
typeDelayPromise = heap.GetTypeByName("System.Threading.Tasks.Task+DelayPromise");
typeQueueUserWorkItemCallback = heap.GetTypeByName("System.Threading.QueueUserWorkItemCallback");
fieldCallback = typeQueueUserWorkItemCallback.GetFieldByName("callback");
typeWaitCallback = heap.GetTypeByName("System.Threading.WaitCallback");
}
public IEnumerable <ValuePointer> AllValuesOfType(params string[] typeNames)
{
return(AllValuesOfType(from tn in typeNames select Heap.GetTypeByName(tn)));
}
private Dictionary<int, string> GetManagedThreadNames(ClrHeap heap)
{
var result = new Dictionary<int, string>();
if (!heap.CanWalkHeap)
return result;
var threadObjects = from obj in heap.EnumerateObjectAddresses()
let type = heap.GetObjectType(obj)
where type != null && type.Name == "System.Threading.Thread"
select obj;
var threadType = heap.GetTypeByName("System.Threading.Thread");
var nameField = threadType.GetFieldByName("m_Name");
var managedIdField = threadType.GetFieldByName("m_ManagedThreadId");
foreach (var threadObject in threadObjects)
{
string name = (string)nameField.GetValue(threadObject);
int id = (int)managedIdField.GetValue(threadObject);
result.Add(id, name);
}
return result;
}
/// <summary> /// Looks up a type by name. /// </summary> /// <param name="name">The name of the type.</param> /// <returns> /// The ClrType matching 'name', null if the type was not found, and undefined if more than one /// type shares the same name. /// </returns> /// <inheritdoc /> public IClrType GetTypeByName(string name) => Converter.Convert(Heap.GetTypeByName(name));
// Sample based on https://github.com/Microsoft/dotnetsamples/blob/master/Microsoft.Diagnostics.Runtime/CLRMD/docs/MachineCode.md
// All the common code was copied from the MemStats project "dotnetsamples-master\Microsoft.Diagnostics.Runtime\CLRMD\MemStats\Program.cs"
static void Main(string[] args)
{
string dump, dac;
if (!TryParseArgs(args, out dump, out dac))
{
Usage();
Environment.Exit(1);
}
try
{
// Create a ClrRuntime instance from the dump and dac location. The ClrRuntime
// object represents a version of CLR loaded in the process. It contains data
// such as the managed threads in the process, the AppDomains in the process,
// the managed heap, and so on.
//ClrRuntime runtime = CreateRuntime(dump, dac);
// 1. Get the ClrType object for the type the method is on
// 2. Get the ClrMethod object for the method
// 3. Get the offset of the native code
// 4. Compute the end address by mapping the IL instruction to addresses
// 5. Disassemble the native code contained in that range (not provided by CLRMD)
using (DataTarget dt = DataTarget.LoadCrashDump(dump))
{
// Boilerplate.
//ClrRuntime runtime = dt.CreateRuntime(dt.ClrVersions.Single().TryDownloadDac());
var version = dt.ClrVersions.Single();
//{v4.0.30319.18444}
//version.Version = new VersionInfo { Major = 4, Minor = 0, Patch = 30319, Revision = 18444 };
Console.WriteLine("CLR Version: {0} ({1}), Dac: {2}", version.Version, version.Flavor, version.DacInfo);
var dacFileName = version.TryDownloadDac();
Console.WriteLine("DacFile: " + Path.GetFileName(dacFileName));
Console.WriteLine("DacPath: " + Path.GetDirectoryName(dacFileName));
ClrRuntime runtime = dt.CreateRuntime(dacFileName);
ClrHeap heap = runtime.GetHeap();
PrintDiagnosticInfo(dt, runtime, heap);
Console.WriteLine();
// Note heap.GetTypeByName doesn't always get you the type, even if it exists, due to
// limitations in the dac private apis that ClrMD is written on. If you have the ClrType
// already via other means (heap walking, stack walking, etc), then that's better than
// using GetTypeByName:
var classNameWithNamespace = "JITterOptimisations.Program";
ClrType @class = heap.GetTypeByName(classNameWithNamespace);
// Get the method you are looking for.
var signature = "JITterOptimisations.Program.Log(System.ConsoleColor, System.String)";
ClrMethod @method = @class.Methods.Single(m => m.GetFullSignature() == signature);
// This is the first instruction of the JIT'ed (or NGEN'ed) machine code.
ulong startAddress = @method.NativeCode;
// Unfortunately there's not a great way to get the size of the code, or the end address.
// This is partly due to the fact that we don't *have* to put all the JIT'ed code into one
// contiguous chunk, though I think an implementation detail is that we actually do.
// You are supposed to do code flow analysis like "uf" in windbg to find the size, but
// in practice you can use the IL to native mapping:
ulong endAddress = @method.ILOffsetMap.Select(entry => entry.EndAddress).Max();
var lines =
File.ReadAllLines(
@"C:\Users\warma11\Documents\Visual Studio 2013\Projects\JITterOptimisations\JITterOptimisations\Program.cs");
PrintILToNativeOffsetAlternative(method, lines);
// This doesn't seem to work as expected, using alternative method (above)
//PrintILToNativeOffsets(method, startAddress, lines);
// So the assembly code for the function is is in the range [startAddress, endAddress] inclusive.
var count = (int)endAddress + runtime.PointerSize - (int)startAddress;
Console.WriteLine("\nCode startAddress 0x{0:X} -> endAddress 0x{1:X} (inclusive), will read {2} bytes", startAddress, endAddress, count);
var bytes = new byte[count];
int bytesRead;
runtime.ReadMemory(startAddress, bytes, count, out bytesRead);
if (count != bytesRead)
{
Console.WriteLine("Expected to read {0} bytes, but only read {1}\n", count, bytesRead);
}
else
{
Console.WriteLine("Read read {0} bytes, as expected\n", bytesRead);
}
var fileName = string.Format("result-{0}bit.bin", runtime.PointerSize == 8 ? 64 : 32);
if (File.Exists(fileName))
{
File.Delete(fileName);
}
File.WriteAllBytes(fileName, bytes);
var filename =
@"C:\Users\warma11\Downloads\__GitHub__\dotnetsamples\Microsoft.Diagnostics.Runtime\CLRMD\MachineCode\nasm-2.11.05-win32\ndisasm.exe";
var currentFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var arguments = "-b32 " + Path.Combine(currentFolder, fileName); // +" -o " + startAddress;
var disassembly = Disassembler.GetDisassembly(filename, arguments, timeoutMsecs: 250);
var assemblyData = Disassembler.ProcessDisassembly(disassembly);
}
}
catch (Exception ex)
{
Console.WriteLine("Unhandled exception:");
Console.WriteLine(ex);
}
}
