Function SK_Debug_LoadHelper

src/diagnostics/debug_utils.cpp:70–142

bool SK_SEH_CompatibleCallerName (LPCVOID lpAddr, wchar_t* wszDllFullName);\

HMODULE
SK_Debug_LoadHelper (void)
{
  static          HMODULE hModDbgHelp  = nullptr;
  static volatile LONG    __init       = 0;

  // Isolate and load the system DLL as a different module since
  //   dbghelp.dll is not threadsafe and other software may be using
  //     the system DLL.
  if (! InterlockedCompareExchangeAcquire (&__init, 1, 0))
  {
    static std::filesystem::path path_to_driver =
      std::filesystem::path (SK_GetInstallPath ()) /
                             LR"(Drivers\Dbghelp\)";

    wchar_t wszSystemDbgHelp   [MAX_PATH + 2] = { };
    wchar_t wszIsolatedDbgHelp [MAX_PATH + 2] = { };

    GetSystemDirectory (wszSystemDbgHelp, MAX_PATH      );
    PathAppendW        (wszSystemDbgHelp, L"dbghelp.dll");

    lstrcatW           (wszIsolatedDbgHelp, path_to_driver.c_str ());
    PathAppendW        (wszIsolatedDbgHelp,
                            SK_RunLHIfBitness (64, L"dbghelp_sk64.dll",
                                                   L"dbghelp_sk32.dll"));

    if ( FALSE == PathFileExistsW          (wszIsolatedDbgHelp) ||
         FALSE == SK_Assert_SameDLLVersion (wszIsolatedDbgHelp,
                                               wszSystemDbgHelp)
       )
    {
      if (PathFileExistsW (wszIsolatedDbgHelp))
      {
        SK_LOGi0 (
          L"Performing in-place upgrade for %ws",
            SK_StripUserNameFromPathW (
              (std::wstring (wszIsolatedDbgHelp) + L'\0').data ()
                                      )
                 );

        wchar_t
          wszTemp [MAX_PATH + 2] = { };

        GetTempFileNameW   (path_to_driver.c_str   (),
                            L"SKI", SK_timeGetTime (),
                                                wszTemp);
        SK_File_MoveNoFail (wszIsolatedDbgHelp, wszTemp);
      }

      SK_DeleteTemporaryFiles (path_to_driver.c_str ());

      SK_CreateDirectories (wszIsolatedDbgHelp);
      CopyFileW            (
          wszSystemDbgHelp, wszIsolatedDbgHelp, TRUE);
    }

    _Notnull_ auto* mods =
       SK_Modules.getPtr ();