/// <summary>
/// Looks through the configured symbol paths to find a PDB symbol
/// file matching specified name, GUID and age parameters.
/// </summary>
/// <param name="pdbFileName"></param>
/// <param name="guid"></param>
/// <param name="age"></param>
/// <returns></returns>
/// <remarks>
/// Note how we don't have to have a module loaded to find its PDB,
/// we just look for a PDB file using name, GUID and age. These are
/// the parameters that can be extracted from module's PE header,
/// in the Debug Directory section.
/// </remarks>
public string FindPdbFile(string pdbFileName, Guid guid, int age)
{
DbgHelp.SymSetOptions(DbgHelp.SYMOPT_DEBUG);
var hProcess = new IntPtr(1);
#if TARGET_NET_20
var searchPath = string.Join(";", this.SymbolPaths.ToArray());
#else
var searchPath = string.Join(";", this.SymbolPaths);
#endif
DbgHelp.SymInitialize(hProcess, searchPath, false);
var filePath = new StringBuilder(256);
var guidHandle = GCHandle.Alloc(guid, GCHandleType.Pinned);
try
{
if (!DbgHelp.SymFindFileInPath(hProcess, null, pdbFileName,
guidHandle.AddrOfPinnedObject(), (uint)age, 0,
DbgHelp.SSRVOPT_GUIDPTR, filePath, null, IntPtr.Zero))
{
return(null);
}
}
finally
{
guidHandle.Free();
DbgHelp.SymCleanup(hProcess);
}
return(filePath.ToString());
}