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
 RCS:           $Id$
________________________________________________________________________
-*/
 
 
#include "basicmod.h"
 
#include "objectset.h"
#include "threadlock.h"
#include "thread.h"
 
template <class T>
mClass(Basic) PerThreadObjectRepository
{
public:
    T&                          getObject();
 
                                ~PerThreadObjectRepository()
                                { deepErase( objects_ ); }
 
private:
    ObjectSet<T>                objects_;
    ObjectSet<const void>       threadids_;
    Threads::Lock               lock_;
 
};
 
typedef PerThreadObjectRepository<BufferString> StaticStringManager;
 
#define _mDeclStaticString(nm) \
    mDefineStaticLocalObject( StaticStringManager, nm##_ssm, ); \
    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 void* 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];
}