#include <stdlib.h>#include <string.h>#include <malloc.h>#include <unistd.h>#include <assert.h> #include <linux/mempool.h>#include <linux/slab.h>#include <urcu/uatomic.h> int nr_allocated; void *mempool_alloc(mempool_t *pool, int gfp_mask){	return pool->alloc(gfp_mask, pool->data);} void mempool_free(void *element, mempool_t *pool){	pool->free(element, pool->data);} mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,			mempool_free_t *free_fn, void *pool_data){	mempool_t *ret = malloc(sizeof(*ret)); 	ret->alloc = alloc_fn;	ret->free = free_fn;	ret->data = pool_data;	return ret;} void *kmem_cache_alloc(struct kmem_cache *cachep, int flags){	void *ret = malloc(cachep->size);	if (cachep->ctor)		cachep->ctor(ret);	uatomic_inc(&nr_allocated);	return ret;} void kmem_cache_free(struct kmem_cache *cachep, void *objp){	assert(objp);	uatomic_dec(&nr_allocated);	memset(objp, 0, cachep->size);	free(objp);} struct kmem_cache *kmem_cache_create(const char *name, size_t size, size_t offset,	unsigned long flags, void (*ctor)(void *)){	struct kmem_cache *ret = malloc(sizeof(*ret)); 	ret->size = size;	ret->ctor = ctor;	return ret;}