指针参数引用参数

static pthread_mutex_t lock_mute;

int modify_inode_for_chain(int index, char *content_id, int play_time)
{

pthread_mutex_lock(&lock_mute);

if(chain_list[index]->head == NULL || chain_list[index]->count == 0)
{
  pthread_mutex_unlock(&lock_mute);
  return 0;
}

node_gut* temp = chain_list[index]->head;
while(1)
{
  if(strcmp(temp->content_id, content_id) == 0)
  {
   temp->play_num = play_time;
   pthread_mutex_unlock(&lock_mute);
   return 1;
  }

  if(temp->next == NULL)
  {
   pthread_mutex_unlock(&lock_mute);
   return 0;
  }

  temp = temp->next;
}

pthread_mutex_unlock(&lock_mute);

return 0;
}

//*content_id指针参数指针参数传入副本需判NULL

//&lock_mute引用参数引用参数在转入前已指向具体pthread_mutex_t 类型传入副本只能使用lock_mute

-----------------------------------------------------------------

D_INT32 curindex = 0;
char *cur_filename = NULL;

dg_player_play_tree_cur_get(&curindex);
D_INT32 dg_player_play_tree_cur_get(D_INT32 *pindex)
{
if (NULL == pindex)
{
return D_FAILURE;
}

*pindex = play_tree.cur;
return D_SUCCESS;
}

D_INT32 dg_player_play_tree_cur_get_JXHY(D_INT32 type,D_INT32 *pindex)
{
D_INT8* filenameinlist;
display_info fileInfo;
FILEINFO pinfo;

dg_player_play_tree_index_file_get(0, &filenameinlist);
if (NULL == filenameinlist)
{
return D_FAILURE;
}
//printf("播放列表的第一个: %s --------------jason\n",filenameinlist);

D_INT32 file_count;

file_count = get_inode_count_from_chain(type);
//DG_MW_file_browser_file_count(&file_count);
//printf("file_count == %d ---------------jason\n", file_count);

node_gut *node_file = NULL;
node_file = get_header_addr_from_chain(type);
/*
if (NULL == node_file)
{
  return D_FAILURE;
}
for (int index = 0; index < file_count -2; index ++)
{
  if (NULL == node_file)
  {
   return D_FAILURE;
  }
  node_file = node_file->next;
}
*/

printf("node_file->file name == %s ,contendid [%s ]\n",
node_file->file_name, node_file->content_id);
//Dare_GetInfoByContentID(node_file->content_id,&pinfo);

for (int i = 0; i < file_count; i++)
{
  //DG_MW_file_browser_file_info_JXHY(i, &fileInfo);

  //get_inode_value_from_chain(type,file_count-i-1,&fileInfo);
  //int ret = Dare_GetInfoByContentID(fileInfo.content_id,&pinfo);
  if (NULL == node_file)
  {
   return D_FAILURE;
  }
  int ret = Dare_GetInfoByContentID(node_file->content_id,&pinfo);

  if(D_FAILURE ==ret)
  {
   printf("get info failed ---2\n");
   return D_FAILURE;
  }

if ((NULL != pinfo.filmfile) && (NULL != filenameinlist))
{

   if (0 == strcmp(pinfo.filmfile, filenameinlist))
   {
    D_INT32 index = 0;
    //DG_MW_GetIndexByContentID(fileInfo.contentid, &index);
    get_chainindex(type, node_file->content_id, &index);

    if(index<0)
    {
     index = 0;
    }
    printf("--------------index == %d -------------\n", index);
    *pindex = index;
    return D_SUCCESS;
   }
  }
  node_file = node_file->next;
}

return D_SUCCESS;
}

指针参数 引用参数

指针参数引用参数