mirror of
https://github.com/amyinspace/MagicSetEditor2.git
synced 2026-06-10 13:06:59 -04:00
twanvl
f45b103871
git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@893 0fc631ac-6414-0410-93d0-97cfa31319b6
123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
//+----------------------------------------------------------------------------+
|
|
//| Description: Magic Set Editor - Program to make Magic (tm) cards |
|
|
//| Copyright: (C) 2001 - 2008 Twan van Laarhoven and "coppro" |
|
|
//| License: GNU General Public License 2 or later (see file COPYING) |
|
|
//+----------------------------------------------------------------------------+
|
|
|
|
#ifndef HEADER_UTIL_DYNAMIC_ARG
|
|
#define HEADER_UTIL_DYNAMIC_ARG
|
|
|
|
/** @file util/dynamic_arg.hpp
|
|
*
|
|
* @brief Support for 'dynamicly scopped' arguments.
|
|
* This header
|
|
*/
|
|
|
|
// ----------------------------------------------------------------------------- : Includes
|
|
|
|
#include <util/prec.hpp>
|
|
#include <wx/thread.h>
|
|
|
|
// ----------------------------------------------------------------------------- : Dynamic argument
|
|
|
|
#ifdef _MSC_VER
|
|
# define THREAD_LOCAL __declspec(thread)
|
|
# define HAVE_TLS 1
|
|
#elif defined __GNUC__
|
|
# define THREAD_LOCAL __thread
|
|
# define HAVE_TLS 1
|
|
#else
|
|
# define HAVE_TLS 0
|
|
#endif
|
|
|
|
#if HAVE_TLS
|
|
|
|
/// Declare a dynamic argument.
|
|
/** The value of the argument can be got with: name()
|
|
* To change the value use WITH_DYNAMIC_ARG(name, newValue)
|
|
* To be used in a header file. Use IMPLEMENT_DYN_ARG in a source file
|
|
*/
|
|
#define DECLARE_DYNAMIC_ARG(Type, name) \
|
|
extern THREAD_LOCAL Type name##_private; \
|
|
inline Type name() { return name##_private; } \
|
|
class name##_changer { \
|
|
public: \
|
|
inline name##_changer(Type const& newValue) \
|
|
: oldValue(name##_private) { \
|
|
name##_private = newValue; \
|
|
} \
|
|
inline ~name##_changer() { \
|
|
name##_private = oldValue; \
|
|
} \
|
|
private: \
|
|
Type oldValue; \
|
|
}
|
|
|
|
/// Implementation of a dynamic argument
|
|
#define IMPLEMENT_DYNAMIC_ARG(Type, name, initial) \
|
|
THREAD_LOCAL Type name##_private = initial;
|
|
|
|
/// Locally change the value of a dynamic argument
|
|
/** Usage:
|
|
* @code
|
|
* // here name() == old value
|
|
* {
|
|
* WITH_DYNAMIC_ARG(name, newValue);
|
|
* // here name() == newValue
|
|
* }
|
|
* // here name() == old value
|
|
* @endcode
|
|
*/
|
|
#define WITH_DYNAMIC_ARG(name, value) \
|
|
name##_changer name##_dummmy(value)
|
|
|
|
#else
|
|
|
|
template <typename T> struct ThreadLocalObject {
|
|
map<int,T*> objects;
|
|
T def;
|
|
wxCriticalSection container_access;
|
|
|
|
inline T operator () () {
|
|
wxCriticalSectionLocker lock(container_access);
|
|
T*& p = objects[wxThread::GetCurrentId()];
|
|
if (!p) {
|
|
p = new T(def);
|
|
}
|
|
return *objects[wxThread::GetCurrentId()];
|
|
}
|
|
|
|
inline void store (T value) {
|
|
wxCriticalSectionLocker lock(container_access);
|
|
T*& p = objects[wxThread::GetCurrentId()];
|
|
if (!p) {
|
|
p = new T(def);
|
|
}
|
|
*objects[wxThread::GetCurrentId()] = value;
|
|
}
|
|
|
|
ThreadLocalObject (T def)
|
|
: def(def)
|
|
{}
|
|
|
|
~ThreadLocalObject () {
|
|
for (typename map<int,T*>::iterator i = objects.begin(); i != objects.end(); ++i) {
|
|
delete (*i).second;
|
|
}
|
|
}
|
|
};
|
|
|
|
#define DECLARE_DYNAMIC_ARG(Type, name) \
|
|
extern ThreadLocalObject<Type> name;
|
|
|
|
#define IMPLEMENT_DYNAMIC_ARG(Type, name, initial) \
|
|
ThreadLocalObject<Type> name (initial);
|
|
|
|
#define WITH_DYNAMIC_ARG(name, value) \
|
|
name.store(value);
|
|
|
|
#endif
|
|
|
|
// ----------------------------------------------------------------------------- : EOF
|
|
#endif
|