Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/StaticConstructors.h

-/*
- * Copyright (C) 2006 Apple Computer, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#ifndef StaticConstructors_h
-#define StaticConstructors_h
-
-// We need to avoid having static constructors. We achieve this
-// with two separate methods for GCC and MSVC. Both methods prevent the static
-// initializers from being registered and called on program startup. On GCC, we
-// declare the global objects with a different type that can be POD default
-// initialized by the linker/loader. On MSVC we use a special compiler feature
-// to have the CRT ignore our static initializers. The constructors will never
-// be called and the objects will be left uninitialized.
-//
-// With both of these approaches, we must define and explicitly call an init
-// routine that uses placement new to create the objects and overwrite the
-// uninitialized placeholders.
-//
-// This is not completely portable, but is what we have for now without
-// changing how a lot of code accesses these global objects.
-
-#ifdef SKIP_STATIC_CONSTRUCTORS_ON_MSVC
-// - Assume that all includes of this header want ALL of their static
-//   initializers ignored. This is currently the case. This means that if
-//   a .cc includes this header (or it somehow gets included), all static
-//   initializers after the include will not be executed.
-// - We do this with a pragma, so that all of the static initializer pointers
-//   go into our own section, and the CRT won't call them. Eventually it would
-//   be nice if the section was discarded, because we don't want the pointers.
-//   See: http://msdn.microsoft.com/en-us/library/7977wcck(VS.80).aspx
-#pragma warning(disable:4075)
-#pragma init_seg(".unwantedstaticinits")
-#endif
-
-#ifndef SKIP_STATIC_CONSTRUCTORS_ON_GCC
-    // Define an global in the normal way.
-#if COMPILER(MSVC7_OR_LOWER)
-#define DEFINE_GLOBAL(type, name) \
-    const type name;
-#else
-#define DEFINE_GLOBAL(type, name, ...) \
-    const type name;
-#endif
-
-#else
-// Define an correctly-sized array of pointers to avoid static initialization.
-// Use an array of pointers instead of an array of char in case there is some alignment issue.
-#if COMPILER(MSVC7_OR_LOWER)
-#define DEFINE_GLOBAL(type, name) \
-    void * name[(sizeof(type) + sizeof(void *) - 1) / sizeof(void *)];
-#else
-#define DEFINE_GLOBAL(type, name, ...) \
-    void * name[(sizeof(type) + sizeof(void *) - 1) / sizeof(void *)];
-#endif
-#endif
-
-#endif // StaticConstructors_h