1 /* $Id$ */

     2 

     3 #ifndef OLDPOOL_FUNC_H

     4 

     5 #include "oldpool.h"

     6 

     7 /**

     8  * Allocate a pool item; possibly allocate a new block in the pool.

     9  * @param first the first pool item to start searching

    10  * @pre first <= Tpool->GetSize()

    11  * @return the allocated pool item (or NULL when the pool is full).

    12  */

    13 template<typename T, typename Tid, OldMemoryPool<T> *Tpool> T *PoolItem<T, Tid, Tpool>::AllocateSafeRaw(uint &first)

    14 {

    15 	uint last_minus_one = Tpool->GetSize() - 1;

    16 

    17 	for (T *t = Tpool->Get(first); t != NULL; t = (t->index < last_minus_one) ? Tpool->Get(t->index + 1U) : NULL) {

    18 		if (!t->IsValid()) {

    19 			first = t->index;

    20 			Tid index = t->index;

    21 

    22 			memset(t, 0, Tpool->item_size);

    23 			t->index = index;

    24 			return t;

    25 		}

    26 	}

    27 

    28 	/* Check if we can add a block to the pool */

    29 	if (Tpool->AddBlockToPool()) return AllocateRaw(first);

    30 

    31 	return NULL;

    32 }

    33 

    34 #endif /* OLDPOOL_FUNC_H */