USPool.hpp

00001 #ifndef _ULTRA_SIMPLE_POOL_
00002 #define _ULTRA_SIMPLE_POOL_
00003 
00004 template<typename T> class USPool
00005 {
00006     private: bool pool_usage[];
00007     private: T pool[];
00008     private: int len;
00009    public: USPool(T init, int _size)
00010     {
00011         pool_usage = new bool[_size];
00012         pool = new pool[_size];
00013         len = _size;
00014         for(int i=0; i<len; ++i)
00015         {
00016             pool_usage[i] = false;
00017             pool[i] = init;
00018         }
00019     }
00020     public: ~USPool()
00021     {
00022         delete[] pool;
00023         pool = NULL;
00024         delete[] pool_usage;
00025         pool_usage = NULL;
00026     }
00027     public: T obtain(T unavail)
00028     {
00029         T ret = unavail;
00030         for(int i=0; i<len; ++i)
00031         {
00032             if(pool_usage[i] == false)
00033             {
00034                 pool_usage[i] = true;
00035                 ret = pool[i];
00036                 break;
00037             }
00038         }
00039         return ret;
00040     }
00041     public: void release(T *released)
00042     {
00043         for(int i=0; i<len; ++i)
00044         {
00045             if(pool[i] == released)
00046             {
00047                 pool_usage[i] = false;
00048             }
00049         }
00050     }
00051 };
00052 
00053 #endif //_ULTRA_SIMPLE_POOL_