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/*****************************************************************************/

/*                                                                           */

/*                        STORAGE ALLOCATION MACROS                          */

/*                                                                           */

/*****************************************************************************/

#define CACHE_LIMIT 2000        /* desired maximum size of storage cache. */

				/* doubles are 1, others are 2            */ 



#define MAGIC_FILLER ((int)0xFFFFFFF3) 

				/* magic 4-byte value that should never appear

				   prior to a block pointer, unless we put it 

				   there to align things on an 8-byte 

				   boundary. */

struct block_list {

    int size;             /* size of blocks on this list */

    free_block_ptr first; /* pointer to first free block of this size 

			     (or NULL if empty list) */

};



#ifdef HEAP_CHECK 

#define FreeD(p) freeD(p)

#else

#define FreeD(p){ if (eu_dll_exists && cache_size > CACHE_LIMIT) { \

		      if (align4 && *(int *)((char *)p-4) == MAGIC_FILLER) \

			  free((char *)p-4); \

		      else \

			  free((char *)p); \

		  } \

		  else { \

		      ((free_block_ptr)p)->next = (free_block_ptr)d_list; \

		      d_list = (d_ptr)p; \

		      cache_size += 1; } \

		  }

#endif



// Size of the usable space in an allocated block

#ifdef ELINUX 

#ifdef EBSD

#define block_size(p) 1    // length is not stored with the block

#else

#define block_size(p) (malloc_usable_size(p))

#endif



#else

#ifdef EDJGPP

#define block_size(p) (((*(unsigned long *)((char *)(p) - 4)) & ~3))

#else

#ifdef EWINDOWS

#define block_size(p) HeapSize((void *)default_heap, 0, p)

#else

#define block_size(p) (_msize(p))

#endif

#endif

#endif