nux-0.9.46
|
00001 /* 00002 * Copyright 2010 Inalogic® Inc. 00003 * 00004 * This program is free software: you can redistribute it and/or modify it 00005 * under the terms of the GNU Lesser General Public License, as 00006 * published by the Free Software Foundation; either version 2.1 or 3.0 00007 * of the License. 00008 * 00009 * This program is distributed in the hope that it will be useful, but 00010 * WITHOUT ANY WARRANTY; without even the implied warranties of 00011 * MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR 00012 * PURPOSE. See the applicable version of the GNU Lesser General Public 00013 * License for more details. 00014 * 00015 * You should have received a copy of both the GNU Lesser General Public 00016 * License along with this program. If not, see <http://www.gnu.org/licenses/> 00017 * 00018 * Authored by: Jay Taoko <jaytaoko@inalogic.com> 00019 * 00020 */ 00021 00022 00023 #ifndef NGLOBALINITIALIZER_H 00024 #define NGLOBALINITIALIZER_H 00025 00026 #ifdef _WIN32 00027 #define NUX_GLOBAL_OBJECT_INIT_SEQUENCE() \ 00028 NUX_GLOBAL_OBJECT_VARIABLE(NGlobalData); \ 00029 NUX_GLOBAL_OBJECT_VARIABLE(NCPU); \ 00030 NUX_GLOBAL_OBJECT_VARIABLE(NProcess); \ 00031 NUX_GLOBAL_OBJECT_VARIABLE(NullOutput); \ 00032 NUX_GLOBAL_OBJECT_VARIABLE(UniqueIndex); \ 00033 NUX_GLOBAL_OBJECT_VARIABLE(NFileManagerWindows); \ 00034 NUX_GLOBAL_OBJECT_VARIABLE(VisualOutputConsole); \ 00035 NUX_GLOBAL_OBJECT_VARIABLE(PrintfOutputConsole); \ 00036 NUX_GLOBAL_OBJECT_VARIABLE(LogFileOutput); \ 00037 NUX_GLOBAL_OBJECT_VARIABLE(LogOutputRedirector); \ 00038 NUX_GLOBAL_OBJECT_VARIABLE(ObjectStats); 00039 00040 //NUX_GLOBAL_OBJECT_VARIABLE(NDefaultMemoryAllocator); 00041 //NUX_GLOBAL_OBJECT_VARIABLE(MemHook); 00042 00043 #elif (defined NUX_OS_LINUX) 00044 #define NUX_GLOBAL_OBJECT_INIT_SEQUENCE() \ 00045 NUX_GLOBAL_OBJECT_VARIABLE(NGlobalData); \ 00046 NUX_GLOBAL_OBJECT_VARIABLE(NullOutput); \ 00047 NUX_GLOBAL_OBJECT_VARIABLE(UniqueIndex); \ 00048 NUX_GLOBAL_OBJECT_VARIABLE(NFileManagerGNU); \ 00049 NUX_GLOBAL_OBJECT_VARIABLE(PrintfOutputConsole); \ 00050 NUX_GLOBAL_OBJECT_VARIABLE(LogFileOutput); \ 00051 NUX_GLOBAL_OBJECT_VARIABLE(LogOutputRedirector); \ 00052 NUX_GLOBAL_OBJECT_VARIABLE(ObjectStats); 00053 00054 //NUX_GLOBAL_OBJECT_VARIABLE(NDefaultMemoryAllocator); 00055 //NUX_GLOBAL_OBJECT_VARIABLE(MemHook); 00056 #endif 00057 00058 namespace nux 00059 { 00060 00061 // This class initialize all inalogic singleton (global objects) in order. It also initialize memory allocators. 00062 // Therefore, do not call new GlobalSingletonInitializer as it will try to call inalogic memory allocator and fail. 00063 // You may use the global placement new operator(it is not overwritten by inalogic) to create GlobalSingletonInitializer 00064 // inside the application data space by calling SystemInitializer(). At shutdown, call SystemShutdown() 00065 // 00066 // You may also create GlobalSingletonInitializer in this way: 00067 // main() 00068 // { 00069 // GlobalSingletonInitializer GlobalInitializer; 00070 // } 00071 // 00072 // 00073 00074 class GlobalSingletonInitializer 00075 { 00076 NUX_DISABLE_OBJECT_COPY (GlobalSingletonInitializer); 00077 GlobalSingletonInitializer *operator & (); 00078 const GlobalSingletonInitializer *operator & () const; 00079 00080 public: 00081 GlobalSingletonInitializer(); 00082 ~GlobalSingletonInitializer(); 00083 00084 static bool Ready(); 00085 private: 00086 static bool m_bGlobalObjectsReady; 00087 00088 NUX_GLOBAL_OBJECT_INIT_SEQUENCE(); 00089 }; 00090 00091 // Hide these functions 00092 // extern NUX_DLL_ENTRY void SystemStart(); 00093 // extern NUX_DLL_ENTRY void SystemShutdown(); 00094 00095 00096 00097 // Nifty Counter idiom. See http://www-d0.fnal.gov/KAI/doc/tutorials/static_initialization.html 00098 class GlobalInitializer 00099 { 00100 public: 00101 GlobalInitializer(); 00102 ~GlobalInitializer(); 00103 private: 00104 static int m_Count; 00105 }; 00106 00107 // Every compilation unit that includes this file will have its own instance of sGlobalInitializer. sGlobalInitializer is initialized 00108 // before the main function of the program is called. The first time sGlobalInitializer is initialized, it calls SystemStart() to create 00109 // our global object singleton. In SystemStart() we have a change to create our singletons in any order we like. 00110 // When the program exits, every instance of sGlobalInitializer will be destroyed. The last instance destroyed will call SystemShutdown(). 00111 // In SystemShutdown() we can destroy our global objects in any order we like. 00112 00113 static GlobalInitializer sGlobalInitializer; 00114 00115 00116 } 00117 00118 #endif // NGLOBALINITIALIZER_H 00119