/// <summary>
/// Obtain the original source code file and line number for the given
/// IL offset in a method identified by a unique metadata token.
/// </summary>
/// <param name="methodMetadataToken"></param>
/// <param name="ilOffset"></param>
/// <returns></returns>
/// <remarks>
/// Metadata token is stored in the PDB file for each method. Additionally
/// it can always be retrieved from MethodInfo via reflection. Exception
/// report saves a meatdata token for each method in the stack trace.
/// </remarks>
public SourceLocation GetSourceLoc(int methodMetadataToken, int ilOffset)
{
IDiaSymbol symMethod;
_session.findSymbolByToken((uint)methodMetadataToken, SymTagEnum.SymTagFunction, out symMethod);
var rvaMethod = symMethod.relativeVirtualAddress;
rvaMethod += (uint)ilOffset;
IDiaEnumLineNumbers lineNumbers;
_session.findLinesByRVA(rvaMethod, 1, out lineNumbers);
foreach (IDiaLineNumber ln in lineNumbers)
{
var sourceFile = ln.sourceFile;
return(new SourceLocation()
{
LineNumber = ln.lineNumber, SourceFile = (sourceFile == null) ? null : sourceFile.fileName
});
}
return(null);
}
/// <summary>
/// Gets the source file name and line for the specified stack frame.
/// </summary>
/// <param name="address">The address.</param>
/// <param name="sourceFileName">Name of the source file.</param>
/// <param name="sourceFileLine">The source file line.</param>
/// <param name="displacement">The displacement.</param>
/// <exception cref="System.Exception">Address not found</exception>
/// <exception cref="Exception">Address not found</exception>
public void GetSourceFileNameAndLine(uint address, out string sourceFileName, out uint sourceFileLine, out ulong displacement)
{
IDiaSymbol function = session.findSymbolByRVA(address, SymTagEnum.Function);
IDiaEnumLineNumbers lineNumbers = session.findLinesByRVA(address, (uint)function.length);
foreach (IDiaLineNumber lineNumber in lineNumbers.Enum())
{
if (address >= lineNumber.relativeVirtualAddress)
{
sourceFileName = lineNumber.sourceFile.fileName;
sourceFileLine = lineNumber.lineNumber;
displacement = address - lineNumber.relativeVirtualAddress;
return;
}
}
throw new Exception("Address not found");
}
public static string GetMethodName(IDiaSession pdbSession, uint rva)
{
IDiaSymbol funcSym;
pdbSession.findSymbolByRVA(rva, SymTagEnum.SymTagFunction, out funcSym);
if (funcSym == null)
{
pdbSession.findSymbolByRVA(rva, SymTagEnum.SymTagPublicSymbol, out funcSym);
}
if (funcSym == null)
{
return(null);
}
StringBuilder methodNameStr = new StringBuilder();
// Append the method-name
methodNameStr.Append(funcSym.GetUndecoratedNameEx(UndName.DebuggerInternal));
// Append the offset of current instruction inside method
methodNameStr.Append("+0x");
methodNameStr.Append(Convert.ToString(rva - funcSym.GetRelativeVirtualAddress(), 16));
// Append the source line
IDiaEnumLineNumbers lines = null;
IDiaSourceFile sourceFile = null;
pdbSession.findLinesByRVA(rva, 1, out lines);
int i;
if (lines != null && lines.count == 1)
{
IDiaLineNumber line = lines.Item(0);
if (line != null)
{
sourceFile = line.SourceFile;
methodNameStr.Append(" (");
methodNameStr.Append(sourceFile.FileName);
methodNameStr.Append(", line ");
methodNameStr.Append(line.LineNumber);
methodNameStr.Append(")");
i = Marshal.ReleaseComObject(line);
if (i != 0)
{
Console.WriteLine("RefCount(funcSym) == {0}", i);
}
}
}
i = Marshal.ReleaseComObject(funcSym);
if (i != 0)
{
Console.WriteLine("RefCount(funcSym) == {0}", i);
}
if (lines != null)
{
if (sourceFile != null)
{
i = Marshal.ReleaseComObject(sourceFile);
if (i != 0)
{
Console.WriteLine("RefCount(sourceFile) == {0}", i);
}
}
// line?
i = Marshal.ReleaseComObject(lines);
if (i != 0)
{
Console.WriteLine("RefCount(lines) == {0}", i);
}
}
//return funcSym.GetName();
return(methodNameStr.ToString());
}