126 lines
2.4 KiB
C++
126 lines
2.4 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "static.h"
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#include "globaldefs.h"
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#if GDEF_DEBUG || defined( DOXYGEN )
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namespace ExampleStatic
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{
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// Static example
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// ---- myclass.h
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class MyClass
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{
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public:
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int value;
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MyClass() : value( 3 ){
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}
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};
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typedef Static<MyClass> StaticMyClass;
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// ---- main.cpp
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class DynamicInitialisation
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{
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public:
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DynamicInitialisation(){
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// StaticMyClass::instance() may be invalid here because construction order is undefined
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}
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};
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DynamicInitialisation g_dynamicInitialisation;
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void duringMain(){
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int bar = StaticMyClass::instance().value;
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}
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// end example
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}
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namespace ExampleLazyStatic
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{
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// LazyStatic example
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// ---- myclass.h
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class MyClass
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{
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public:
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int value;
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MyClass() : value( 3 ){
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}
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// destructor will never be called
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};
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typedef LazyStatic<MyClass> StaticMyClass;
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// ---- main.cpp
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class DynamicInitialisation
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{
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public:
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DynamicInitialisation(){
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int bar = StaticMyClass::instance().value;
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}
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};
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DynamicInitialisation g_dynamicInitialisation;
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void duringMain(){
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int bar = StaticMyClass::instance().value;
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}
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// end example
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}
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namespace ExampleSmartStatic
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{
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// SmartStatic example
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// ---- myclass.h
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class MyClass
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{
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public:
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int value;
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MyClass() : value( 3 ){
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}
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};
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typedef CountedStatic<MyClass> StaticMyClass;
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// ---- main.cpp
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class DynamicInitialisation
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{
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public:
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DynamicInitialisation(){
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// StaticMyClass::instance() is invalid before the ref is constructed
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SmartStatic<MyClass> ref;
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int bar = ref.instance().value;
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SmartStatic<MyClass> ref2; // any number of instances are allowed.
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}
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};
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DynamicInitialisation g_dynamicInitialisation;
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void duringMain(){
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int bar = SmartStatic<MyClass>().instance().value; // an instance can be a temporary
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}
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// end example
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}
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#endif
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