/*
*
* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <sys/types.h>

#include "dmm_config.h"
#include "dmm_share.h"

struct heap_path
{
  void *base;
  size_t size;
};

int
dmm_heap_create (struct dmm_share *share)
{
  share->base = malloc (share->size);

  if (share->base)
    {
      struct heap_path *hp = (struct heap_path *) share->path;
      hp->base = share->base;
      hp->size = share->size;
      return 0;
    }

  return -1;
}

int
dmm_heap_delete (struct dmm_share *share)
{
  free (share->base);
  return 0;
}

int
dmm_heap_attach (struct dmm_share *share)
{
  struct heap_path *hp = (struct heap_path *) share->path;

  if (share->base)
    {
      if (hp->base != share->base)
        return -1;
    }
  else
    {
      share->base = hp->base;
    }

  if (share->size)
    {
      if (share->size != hp->size)
        return -1;
    }
  else
    {
      share->size = hp->size;
    }

  return 0;
}

int
dmm_heap_detach (struct dmm_share *share)
{
  return 0;
}