mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-12-23 18:15:45 -05:00
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
/*
|
|
* threadsafesingleton.h
|
|
*
|
|
* Created on: Aug 7, 2015
|
|
* Author: f4exb
|
|
*/
|
|
|
|
#ifndef INCLUDE_UTIL_THREADSAFESINGLETON_H_
|
|
#define INCLUDE_UTIL_THREADSAFESINGLETON_H_
|
|
|
|
//! Template class used to make from a class a singleton.
|
|
/** S is the type of the singleton object to instantiate.
|
|
<br> This class permits to gather all singleton code in the same place
|
|
and not to pollute object interface with singleton methods.
|
|
<br> Accessing to the instance of S is made through ThreadSafeSingleton<S>::instance()
|
|
<br><B>Note :</B> The class using this adapter should have constructor and
|
|
destructor protected and copy constructor and operator= private.
|
|
<br>Besides it should declare the class ThreadSafeSingleton<S> friend in order
|
|
this class can make the construction.
|
|
*/
|
|
|
|
template <class S> class ThreadSafeSingleton
|
|
{
|
|
public:
|
|
static S& instance() { return *_pInstance; }
|
|
|
|
protected:
|
|
ThreadSafeSingleton() {}
|
|
~ThreadSafeSingleton() { delete _pInstance; }
|
|
static S* _pInstance;
|
|
|
|
private:
|
|
ThreadSafeSingleton(const ThreadSafeSingleton&) {}
|
|
ThreadSafeSingleton& operator = (const ThreadSafeSingleton&) {return *this;}
|
|
};
|
|
|
|
template <class S> S *ThreadSafeSingleton<S>::_pInstance = new S;
|
|
|
|
#endif /* INCLUDE_UTIL_THREADSAFESINGLETON_H_ */
|