perthreadrepos.h

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#pragma once

/*@+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        K. Tingdahl
 Date:          Jan 2014
________________________________________________________________________
-*/


#include "basicmod.h"

#include "manobjectset.h"
#include "threadlock.h"
#include "thread.h"

template <class T>
mClass(Basic) PerThreadObjectRepository
{
public:
    T&                          getObject();

private:
    ManagedObjectSet<T>         objects_;
    ObjectSet<const void>       threadids_;
    Threads::Lock               lock_;

};

typedef PerThreadObjectRepository<BufferString> StaticStringManager;

#define _mDeclStaticString(nm) \
    mDefineStaticLocalObject( StaticStringManager, nm##_ssm, \
                              = StaticStringManager() ) \
    BufferString& nm = nm##_ssm.getObject()

#ifdef __debug__
#define mDeclStaticString(nm) \
    _mDeclStaticString(nm); \
    addToStaticStringRepos( &nm )
#else
#define mDeclStaticString(nm) \
    _mDeclStaticString(nm)
#endif

mGlobal(Basic) void addToStaticStringRepos(const OD::String*);
mGlobal(Basic) bool isStaticString(const OD::String*);

//Implementation

template <class T>
T& PerThreadObjectRepository<T>::getObject()
{
    const Threads::ThreadID threadid = Threads::currentThread();
    Threads::Locker lock( lock_ );
    int idx = threadids_.indexOf( threadid );
    if ( idx<0 )
    {
        idx = threadids_.size();
        threadids_ += threadid;
        objects_ += new T;
    }

    return *objects_[idx];
}