/// <summary>
/// Retrieve symbols and line numbers and write them to a memory stream
/// </summary>
/// <param name="FileName"></param>
/// <returns></returns>
private Internals.AssemblyLineMap GetAssemblyLineMap(string FileName)
{
// create a new map to capture symbols and line info with
_alm = Internals.Bookkeeping.AssemblyLineMaps.Add(FileName);
if (!System.IO.File.Exists(FileName))
{
throw new FileNotFoundException("The file could not be found.", FileName);
}
var hProcess = System.Diagnostics.Process.GetCurrentProcess().Id;
Int64 dwModuleBase = 0;
// clear the map
_alm.Clear();
try
{
if (SymInitialize(hProcess, "", false) != 0)
{
dwModuleBase = SymLoadModuleEx(hProcess, 0, FileName, 0, 0, 0, 0, 0);
if (dwModuleBase != 0)
{
// this apparently is required in some cases where the module info load may be deferred
IMAGEHLP_MODULE64 moduleInfo = IMAGEHLP_MODULE64.Create();
var r = SymGetModuleInfo(hProcess, 0, ref moduleInfo);
// Enumerate all the symbol names
var rEnumSymbolsDelegate = new PSYM_ENUMSYMBOLS_CALLBACK(SymEnumSymbolsCallback_proc);
if (SymEnumSymbols(hProcess, dwModuleBase, 0, rEnumSymbolsDelegate, 0) == 0)
{
// unable to retrieve the symbol list
throw new UnableToEnumerateSymbolsException();
}
// now enumerate all the source lines and their respective addresses
var pSymEnumLinesCallback_proc = new PSYM_ENUMLINES_CALLBACK(SymEnumLinesCallback_proc);
if (SymEnumSourceLines(hProcess, dwModuleBase, 0, 0, 0, 0, pSymEnumLinesCallback_proc, 0) == 0)
{
// unable to retrieve the line number list
throw new UnableToEnumLinesException();
}
}
}
}
catch (Exception ex)
{
// return vars
Log.LogError(ex, "Unable to retrieve symbols.");
_alm.Clear();
// and rethrow
throw;
}
finally
{
Log.LogMessage("Retrieved {0} symbols", _alm.Symbols.Count);
Log.LogMessage("Retrieved {0} lines", _alm.AddressToLineMap.Count);
Log.LogMessage("Retrieved {0} strings", _alm.Names.Count);
// release the module
if (dwModuleBase != 0)
{
SymUnloadModule64(hProcess, dwModuleBase);
}
// can clean up the dbghelp system
SymCleanup(hProcess);
}
return(_alm);
}
private static extern int SymEnumSymbols(
int hProcess,
Int64 BaseOfDll,
int Mask,
PSYM_ENUMSYMBOLS_CALLBACK lpCallback,
int UserContext);
