C++ (Cpp) slab_list_delの例

コード例 #1

ファイル: mempool.c プロジェクト: DarkDare/tarantool

void
mslab_free(struct mempool *pool, struct mslab *slab, void *ptr)
{
	/* put object to garbage list */
	*(void **)ptr = slab->free_list;
	slab->free_list = ptr;

	slab->nfree++;

	if (slab->nfree == 1) {
		/**
		 * Add this slab to the rbtree which contains partially
		 * populated slabs.
		 */
		mslab_tree_insert(&pool->free_slabs, slab);
	} else if (slab->nfree == pool->objcount) {
		/** Free the slab. */
		mslab_tree_remove(&pool->free_slabs, slab);
		if (pool->spare > slab) {
			slab_list_del(&pool->slabs, &pool->spare->slab,
				      next_in_list);
			slab_put(pool->cache, &pool->spare->slab);
			pool->spare = slab;
		 } else if (pool->spare) {
			 slab_list_del(&pool->slabs, &slab->slab,
				       next_in_list);
			 slab_put(pool->cache, &slab->slab);
		 } else {
			 pool->spare = slab;
		 }
	}
}

コード例 #2

ファイル: region.c プロジェクト: nunb/tarantool

/**
 * Release all memory down to new_size; new_size has to be previously
 * obtained by calling region_used().
 */
void
region_truncate(struct region *region, size_t used)
{
	ssize_t cut_size = region_used(region) - used;
	assert(cut_size >= 0);

	while (! rlist_empty(&region->slabs.slabs)) {
		struct rslab *slab = rlist_first_entry(&region->slabs.slabs,
						       struct rslab,
						       slab.next_in_list);
		if (slab->used > cut_size) {
			/* This is the last slab to trim. */
			slab->used -= cut_size;
			cut_size = 0;
			break;
		}
		cut_size -= slab->used;
		/* Remove the entire slab. */
		slab_list_del(&region->slabs, &slab->slab, next_in_list);
		slab_put(region->cache, &slab->slab);
	}
	assert(cut_size == 0);
	region->slabs.stats.used = used;
}