tools/testing/radix-tree/linux.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3 #include <malloc.h>
   4 #include <unistd.h>
   5 #include <assert.h>
   6
   7 #include <linux/mempool.h>
   8 #include <linux/slab.h>
   9 #include <urcu/uatomic.h>
  10
  11 int nr_allocated;
  12
  13 void *mempool_alloc(mempool_t *pool, int gfp_mask)
  14 {
  15         return pool->alloc(gfp_mask, pool->data);
  16 }
  17
  18 void mempool_free(void *element, mempool_t *pool)
  19 {
  20         pool->free(element, pool->data);
  21 }
  22
  23 mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
  24                         mempool_free_t *free_fn, void *pool_data)
  25 {
  26         mempool_t *ret = malloc(sizeof(*ret));
  27
  28         ret->alloc = alloc_fn;
  29         ret->free = free_fn;
  30         ret->data = pool_data;
  31         return ret;
  32 }
  33
  34 void *kmem_cache_alloc(struct kmem_cache *cachep, int flags)
  35 {
  36         void *ret = malloc(cachep->size);
  37         if (cachep->ctor)
  38                 cachep->ctor(ret);
  39         uatomic_inc(&nr_allocated);
  40         return ret;
  41 }
  42
  43 void kmem_cache_free(struct kmem_cache *cachep, void *objp)
  44 {
  45         assert(objp);
  46         uatomic_dec(&nr_allocated);
  47         memset(objp, 0, cachep->size);
  48         free(objp);
  49 }
  50
  51 struct kmem_cache *
  52 kmem_cache_create(const char *name, size_t size, size_t offset,
  53         unsigned long flags, void (*ctor)(void *))
  54 {
  55         struct kmem_cache *ret = malloc(sizeof(*ret));
  56
  57         ret->size = size;
  58         ret->ctor = ctor;
  59         return ret;
  60 }