Class StackWalkerInternal

Main/StackWalker/StackWalker.cpp:249–870

#define USED_CONTEXT_FLAGS CONTEXT_FULL

class StackWalkerInternal
{
public:
  StackWalkerInternal(StackWalker* parent, HANDLE hProcess)
  {
    m_parent = parent;
    m_hDbhHelp = NULL;
    pSC = NULL;
    m_hProcess = hProcess;
    m_szSymPath = NULL;
    pSFTA = NULL;
    pSGLFA = NULL;
    pSGMB = NULL;
    pSGMI = NULL;
    pSGO = NULL;
    pSGSFA = NULL;
    pSI = NULL;
    pSLM = NULL;
    pSSO = NULL;
    pSW = NULL;
    pUDSN = NULL;
    pSGSP = NULL;
  }
  ~StackWalkerInternal()
  {
    if (pSC != NULL)
      pSC(m_hProcess); // SymCleanup
    if (m_hDbhHelp != NULL)
      FreeLibrary(m_hDbhHelp);
    m_hDbhHelp = NULL;
    m_parent = NULL;
    if (m_szSymPath != NULL)
      free(m_szSymPath);
    m_szSymPath = NULL;
  }
  BOOL Init(LPCSTR szSymPath)
  {
    if (m_parent == NULL)
      return FALSE;
    // Dynamically load the Entry-Points for dbghelp.dll:
    // First try to load the newest one from
    TCHAR szTemp[4096];
    // But before we do this, we first check if the ".local" file exists
    if (GetModuleFileName(NULL, szTemp, 4096) > 0)
    {
      _tcscat_s(szTemp, _T(".local"));
      if (GetFileAttributes(szTemp) == INVALID_FILE_ATTRIBUTES)
      {
        // ".local" file does not exist, so we can try to load the dbghelp.dll from the "Debugging Tools for Windows"
        // Ok, first try the new path according to the architecture:
#ifdef _M_IX86
        if ((m_hDbhHelp == NULL) && (GetEnvironmentVariable(_T("ProgramFiles"), szTemp, 4096) > 0))
        {
          _tcscat_s(szTemp, _T("\\Debugging Tools for Windows (x86)\\dbghelp.dll"));
          // now check if the file exists:
          if (GetFileAttributes(szTemp) != INVALID_FILE_ATTRIBUTES)
          {
            m_hDbhHelp = LoadLibrary(szTemp);