link.h

采用UDP协议实现的UNIX/Linux环境下的聊天服务器和客户端程序

#ifndef _LINK_H
#  define _LINK_H

typedef struct link_node
{
  // data
  void *data;

  // attributions
  int type;

  // relationship
  //struct link_node *head;
  struct link_node *next;
  struct link_node *prev;

  void (*destroy_data) (void *);
  void (*dump_self) (void *);
} link_node_t;

typedef link_node_t link_t;

#  if 0
struct tree_node
{
  void *data;

  struct tree_node *root;
  struct tree_node *children;
  struct tree_node *prev_brother;
}
#  endif

typedef enum insert_method
{
  INSERT_METHOD_BEFORE = 0,
  INSERT_METHOD_AFTER = 1,
} insert_method_t;

typedef enum node_type
{
  NODE_TYPE_UNKNOWN = -1,
  NODE_TYPE_HEAD = 100,
  NODE_TYPE_NORMAL = 200,
  NODE_TYPE_TAIL = 300
} node_type_t;

link_node_t *link_init(void (*destroy_data_callback) (void *), void (*dump_self_callback) (void *));
void link_destroy(link_node_t * head);
int link_insert_node(link_node_t * head, link_node_t * ref, link_node_t * p, insert_method_t method);
int link_insert_normal_node(link_node_t * head, link_node_t * ref, link_node_t * p, insert_method_t method);
int link_delete_node(link_node_t * head, link_node_t * p);
link_node_t *create_node(node_type_t t);
inline node_type_t get_node_type(link_node_t * p);
link_node_t *link_locate_node(link_node_t * head, void *condition);
int link_update_node(link_node_t * head, link_node_t * p);
void link_dump_nodes(link_node_t * head);

#endif