Exemple #1
0
static inline void sfm_pool_insert (struct sfm_pool* pool, int hash,
								struct sfm_frag* frag)
{
	unsigned long hash_bit;

	frag_push(&pool->pool_hash[hash].first, frag);
	atomic_inc_long((long*)&pool->pool_hash[hash].no);
	/* set it only if not already set (avoids an expensive
	 * cache trashing atomic write op) */
	hash_bit=HASH_TO_BITMAP(hash);
	if  (!(atomic_get_long((long*)&pool->bitmap) & hash_bit))
		atomic_or_long((long*)&pool->bitmap, hash_bit);
}
Exemple #2
0
static inline void sfm_insert_free(struct sfm_block* qm, struct sfm_frag* frag,
									int split)
{
	struct sfm_frag** f;
	unsigned long p_id;
	int hash;
	unsigned long hash_bit;
	
	if (likely(frag->size<=SF_POOL_MAX_SIZE)){
		hash=GET_SMALL_HASH(frag->size);
		if (unlikely((p_id=sfm_choose_pool(qm, frag, hash, split))==
					(unsigned long)-1)){
			/* add it back to the "main" hash */
			SFM_MAIN_HASH_LOCK(qm, hash);
				frag->id=(unsigned long)(-1); /* main hash marker */
				/*insert it here*/
				frag_push(&(qm->free_hash[hash].first), frag);
				qm->free_hash[hash].no++;
				/* set it only if not already set (avoids an expensive
		 		* cache trashing atomic write op) */
				hash_bit=HASH_TO_BITMAP(hash);
				if  (!(atomic_get_long((long*)&qm->bitmap) & hash_bit))
					atomic_or_long((long*)&qm->bitmap, hash_bit);
			SFM_MAIN_HASH_UNLOCK(qm, hash);
		}else{
			/* add it to one of the pools pool */
			sfm_pool_insert(&qm->pool[p_id], hash, frag);
		}
	}else{
		hash=GET_BIG_HASH(frag->size);
		SFM_MAIN_HASH_LOCK(qm, hash);
			f=&(qm->free_hash[hash].first);
			for(; *f; f=&((*f)->u.nxt_free))
				if (frag->size <= (*f)->size) break;
			frag->id=(unsigned long)(-1); /* main hash marker */
			/*insert it here*/
			frag->u.nxt_free=*f;
			*f=frag;
			qm->free_hash[hash].no++;
			/* inc. big hash free size ? */
		SFM_MAIN_HASH_UNLOCK(qm, hash);
	}
	
}