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/*
* Copyright 2010 Inalogic® Inc.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License, as
* published by the Free Software Foundation; either version 2.1 or 3.0
* of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the applicable version of the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of both the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Authored by: Jay Taoko <jaytaoko@inalogic.com>
*
*/
#ifndef NGLOBALINITIALIZER_H
#define NGLOBALINITIALIZER_H
#include "Macros.h"
#include "System.h"
#ifdef _WIN32
#define NUX_GLOBAL_OBJECT_INIT_SEQUENCE() \
NUX_GLOBAL_OBJECT_VARIABLE(NGlobalData); \
NUX_GLOBAL_OBJECT_VARIABLE(NProcess); \
NUX_GLOBAL_OBJECT_VARIABLE(NullOutput); \
NUX_GLOBAL_OBJECT_VARIABLE(UniqueIndex); \
NUX_GLOBAL_OBJECT_VARIABLE(NFileManagerWindows); \
NUX_GLOBAL_OBJECT_VARIABLE(VisualOutputConsole); \
NUX_GLOBAL_OBJECT_VARIABLE(PrintfOutputConsole); \
NUX_GLOBAL_OBJECT_VARIABLE(LogFileOutput); \
NUX_GLOBAL_OBJECT_VARIABLE(LogOutputRedirector); \
NUX_GLOBAL_OBJECT_VARIABLE(ObjectStats);
#elif (defined NUX_OS_LINUX)
#define NUX_GLOBAL_OBJECT_INIT_SEQUENCE() \
NUX_GLOBAL_OBJECT_VARIABLE(NGlobalData); \
NUX_GLOBAL_OBJECT_VARIABLE(NullOutput); \
NUX_GLOBAL_OBJECT_VARIABLE(UniqueIndex); \
NUX_GLOBAL_OBJECT_VARIABLE(NFileManagerGNU); \
NUX_GLOBAL_OBJECT_VARIABLE(PrintfOutputConsole); \
NUX_GLOBAL_OBJECT_VARIABLE(LogFileOutput); \
NUX_GLOBAL_OBJECT_VARIABLE(LogOutputRedirector); \
NUX_GLOBAL_OBJECT_VARIABLE(ObjectStats);
#endif
namespace nux
{
// This class initialize all inalogic singleton (global objects) in order. It also initialize memory allocators.
// Therefore, do not call new GlobalSingletonInitializer as it will try to call inalogic memory allocator and fail.
// You may use the global placement new operator(it is not overwritten by inalogic) to create GlobalSingletonInitializer
// inside the application data space by calling SystemInitializer(). At shutdown, call SystemShutdown()
//
// You may also create GlobalSingletonInitializer in this way:
// main()
// {
// GlobalSingletonInitializer GlobalInitializer;
// }
//
//
class GlobalSingletonInitializer
{
NUX_DISABLE_OBJECT_COPY (GlobalSingletonInitializer);
GlobalSingletonInitializer *operator & ();
const GlobalSingletonInitializer *operator & () const;
public:
GlobalSingletonInitializer();
~GlobalSingletonInitializer();
static bool Ready();
private:
static bool m_bGlobalObjectsReady;
NUX_GLOBAL_OBJECT_INIT_SEQUENCE();
};
// Nifty Counter idiom. See http://www-d0.fnal.gov/KAI/doc/tutorials/static_initialization.html
class GlobalInitializer
{
public:
GlobalInitializer();
~GlobalInitializer();
static void ForceShutdown();
private:
static int m_Count;
};
// Every compilation unit that includes this file will have its own instance of sGlobalInitializer. sGlobalInitializer is initialized
// before the main function of the program is called. The first time sGlobalInitializer is initialized, it calls SystemStart() to create
// our global object singleton. In SystemStart() we have a change to create our singletons in any order we like.
// When the program exits, every instance of sGlobalInitializer will be destroyed. The last instance destroyed will call SystemShutdown().
// In SystemShutdown() we can destroy our global objects in any order we like.
static GlobalInitializer sGlobalInitializer;
}
#endif // NGLOBALINITIALIZER_H
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