Elide use of rtl_Instance (which is obsoleted by C++11 thread-safe statics),

...redux, after 8473ac2e27efff3ec902a358896a669ce05f047a "Elide use of
rtl_Instance (which is obsoleted by C++11 thread-safe statics)" had done the
same in parallel but forgot to remove some now-unnecessary parts:

There appears to be no good reason to control the lifecycle of the VtableFactory
instance via dso_init/exit, instead of via a plain static local variable.

This removes the need for the Windows DllMain functions.  They also called
DisableThreadLibraryCalls, which disables the DLL_THREAD_ATTACH and
DLL_THREAD_DETACH notifications for the respective DllMain.  Lets assume that
this was only done (as an optimization) because there had to be a user-provided
DllMain, and that it was not in itself a reason to have a user-provided DllMain.
(Most other DllMain across the code base that call DisableThreadLibraryCalls
also do something else.  The only DllMain that only calls
DisableThreadLibraryCalls is the one in
shell/source/win32/shlxthandler/ooofilt/ooofilt.cxx, introduced with
3fbfb21e298ba506c50733d4aaefc7550bca2fe4 "INTEGRATION: CWS desktintgr02".)

Change-Id: I696e1c8d49060853c1a2c24f67469f6adfea6801
Reviewed-on: https://gerrit.libreoffice.org/85367
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

3 files changed, 2 insertions, 115 deletions

diff --git a/bridges/source/cpp_uno/msvc_win32_intel/dllinit.cxx b/bridges/source/cpp_uno/msvc_win32_intel/dllinit.cxx
deleted file mode 100644
index f65ef74ba4e5..000000000000
--- a/bridges/source/cpp_uno/msvc_win32_intel/dllinit.cxx
+++ /dev/null
@@ -1,49 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * This file incorporates work covered by the following license notice:
- *
- *   Licensed to the Apache Software Foundation (ASF) under one or more
- *   contributor license agreements. See the NOTICE file distributed
- *   with this work for additional information regarding copyright
- *   ownership. The ASF licenses this file to you under the Apache
- *   License, Version 2.0 (the "License"); you may not use this file
- *   except in compliance with the License. You may obtain a copy of
- *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
- */
-
-
-#if !defined WIN32_LEAN_AND_MEAN
-# define WIN32_LEAN_AND_MEAN
-#endif
-#include <windows.h>
-
-
-void dso_init();
-void dso_exit();
-
-
-extern "C" BOOL WINAPI DllMain(HMODULE hModule, DWORD dwReason, LPVOID lpvReserved)
-{
-    switch(dwReason) {
-    case DLL_PROCESS_ATTACH:
-        DisableThreadLibraryCalls(hModule);
-
-        dso_init();
-        break;
-
-    case DLL_PROCESS_DETACH:
-        if (!lpvReserved)
-            dso_exit();
-        break;
-    }
-
-    return TRUE;
-}
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/bridges/source/cpp_uno/msvc_win32_x86-64/dllinit.cxx b/bridges/source/cpp_uno/msvc_win32_x86-64/dllinit.cxx
deleted file mode 100644
index 8517f0c72674..000000000000
--- a/bridges/source/cpp_uno/msvc_win32_x86-64/dllinit.cxx
+++ /dev/null
@@ -1,44 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*
- * This file is part of the LibreOffice project.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * This file incorporates work covered by the following license notice:
- *
- *   Licensed to the Apache Software Foundation (ASF) under one or more
- *   contributor license agreements. See the NOTICE file distributed
- *   with this work for additional information regarding copyright
- *   ownership. The ASF licenses this file to you under the Apache
- *   License, Version 2.0 (the "License"); you may not use this file
- *   except in compliance with the License. You may obtain a copy of
- *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
- */
-
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-
-#include <cppinterfaceproxy.hxx>
-
-extern "C" BOOL WINAPI DllMain(HMODULE hModule, DWORD dwReason, LPVOID lpvReserved)
-{
-    switch(dwReason) {
-    case DLL_PROCESS_ATTACH:
-        DisableThreadLibraryCalls(hModule);
-
-        dso_init();
-        break;
-
-    case DLL_PROCESS_DETACH:
-        if (!lpvReserved)
-            dso_exit();
-        break;
-    }
-
-    return TRUE;
-}
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx b/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx
index 466d83ef46a4..29b035fec3ab 100644
--- a/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx
+++ b/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx
@@ -29,27 +29,6 @@
 #include <memory>
 #include <new>
 
-
-static bridges::cpp_uno::shared::VtableFactory * pInstance;
-
-#if defined(__GNUG__)
-extern "C" void dso_init() __attribute__((constructor));
-extern "C" void dso_exit() __attribute__((destructor));
-#endif
-
-void dso_init() {
-    if (!pInstance)
-        pInstance = new bridges::cpp_uno::shared::VtableFactory();
-}
-
-void dso_exit() {
-    if (pInstance)
-    {
-        delete pInstance;
-        pInstance = nullptr;
-    }
-}
-
 namespace bridges { namespace cpp_uno { namespace shared {
 
 void freeCppInterfaceProxy(uno_ExtEnvironment * pEnv, void * pInterface)
@@ -80,8 +59,9 @@ com::sun::star::uno::XInterface * CppInterfaceProxy::create(
 {
     typelib_typedescription_complete(
         reinterpret_cast< typelib_TypeDescription ** >(&pTypeDescr));
+    static bridges::cpp_uno::shared::VtableFactory factory;
     const bridges::cpp_uno::shared::VtableFactory::Vtables& rVtables(
-        pInstance->getVtables(pTypeDescr));
+        factory.getVtables(pTypeDescr));
     std::unique_ptr< char[] > pMemory(
         new char[
             sizeof (CppInterfaceProxy)