mirror of https://github.com/OpenTTD/OpenTTD.git
35 lines
866 B
C++
35 lines
866 B
C++
/* $Id$ */
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#ifndef OLDPOOL_FUNC_H
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#include "oldpool.h"
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/**
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* Allocate a pool item; possibly allocate a new block in the pool.
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* @param first the first pool item to start searching
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* @pre first <= Tpool->GetSize()
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* @return the allocated pool item (or NULL when the pool is full).
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*/
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template<typename T, typename Tid, OldMemoryPool<T> *Tpool> T *PoolItem<T, Tid, Tpool>::AllocateSafeRaw(uint &first)
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{
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uint last_minus_one = Tpool->GetSize() - 1;
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for (T *t = Tpool->Get(first); t != NULL; t = (t->index < last_minus_one) ? Tpool->Get(t->index + 1U) : NULL) {
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if (!t->IsValid()) {
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first = t->index;
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Tid index = t->index;
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memset(t, 0, Tpool->item_size);
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t->index = index;
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return t;
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}
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}
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/* Check if we can add a block to the pool */
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if (Tpool->AddBlockToPool()) return AllocateRaw(first);
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return NULL;
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}
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#endif /* OLDPOOL_FUNC_H */
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