squserdata.h

00001 /*  see copyright notice in squirrel.h */
00002 #ifndef _SQUSERDATA_H_
00003 #define _SQUSERDATA_H_
00004 
00005 struct SQUserData : SQDelegable
00006 {
00007     SQUserData(SQSharedState *ss){ _delegate = 0; _hook = NULL; INIT_CHAIN(); ADD_TO_CHAIN(&_ss(this)->_gc_chain, this); }
00008     ~SQUserData()
00009     {
00010         REMOVE_FROM_CHAIN(&_ss(this)->_gc_chain, this);
00011         SetDelegate(NULL);
00012     }
00013     static SQUserData* Create(SQSharedState *ss, SQInteger size)
00014     {
00015         SQUserData* ud = (SQUserData*)SQ_MALLOC(sq_aligning(sizeof(SQUserData))+size);
00016         new (ud) SQUserData(ss);
00017         ud->_size = size;
00018         ud->_typetag = 0;
00019         return ud;
00020     }
00021 #ifndef NO_GARBAGE_COLLECTOR
00022     void Mark(SQCollectable **chain);
00023     void Finalize(){SetDelegate(NULL);}
00024     SQObjectType GetType(){ return OT_USERDATA;}
00025 #endif
00026     void Release() {
00027         if (_hook) _hook((SQUserPointer)sq_aligning(this + 1),_size);
00028         SQInteger tsize = _size;
00029         this->~SQUserData();
00030         SQ_FREE(this, sq_aligning(sizeof(SQUserData)) + tsize);
00031     }
00032     
00033         
00034     SQInteger _size;
00035     SQRELEASEHOOK _hook;
00036     SQUserPointer _typetag;
00037     //SQChar _val[1];
00038 };
00039 
00040 #endif //_SQUSERDATA_H_