/[LeafOK_CVS]/lbbs/include/section_list.h
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Revision 1.2 by sysadm, Wed May 21 05:36:04 2025 UTC Revision 1.13 by sysadm, Sun May 25 10:43:27 2025 UTC
# Line 18  Line 18 
18  #include "bbs.h"  #include "bbs.h"
19    
20  #define BBS_article_title_max_len 80  #define BBS_article_title_max_len 80
21    #define BBS_article_limit_per_section 50000
22    #define BBS_article_limit_per_page 20
23    
24  // Limit of articles (including those marked as deleted) per section = BBS_article_limit_per_block * BBS_article_block_limit_per_section  #define ARTICLE_PER_BLOCK 1000
 #define BBS_article_limit_per_block 1000  
 #define BBS_article_block_limit_per_section 50  
25    
26  struct article_t  struct article_t
27  {  {
28          int32_t aid;          int32_t aid;
29          int32_t tid;          int32_t tid;
30            int32_t sid;
31          int32_t cid;          int32_t cid;
32          int32_t uid;          int32_t uid;
33          int32_t prior_aid;          struct article_t *p_prior;               // prior article
34          int32_t next_aid;          struct article_t *p_next;                // next article
35            struct article_t *p_topic_prior; // same topic
36            struct article_t *p_topic_next;  // same topic
37          int8_t visible;          int8_t visible;
38          int8_t excerption;          int8_t excerption;
39          int8_t ontop;          int8_t ontop;
# Line 41  struct article_t Line 44  struct article_t
44  };  };
45  typedef struct article_t ARTICLE;  typedef struct article_t ARTICLE;
46    
47  struct article_block_t  struct section_list_t
 {  
         ARTICLE articles[BBS_article_limit_per_block];  
         int32_t article_count;  
         struct article_block_t *p_next_block;  
 };  
 typedef struct article_block_t ARTICLE_BLOCK;  
   
 struct section_data_t  
48  {  {
49          int32_t sid;          int32_t sid;
50            int32_t class_id;
51            int8_t enable;
52          char sname[BBS_section_name_max_len + 1];          char sname[BBS_section_name_max_len + 1];
53          char stitle[BBS_section_title_max_len + 1];          char stitle[BBS_section_title_max_len + 1];
54          char master_name[BBS_username_max_len + 1];          char master_name[BBS_username_max_len + 1];
55          ARTICLE_BLOCK *p_head_block;          int read_user_level;
56          ARTICLE_BLOCK *p_tail_block;          int write_user_level;
         ARTICLE_BLOCK *p_block[BBS_article_block_limit_per_section];  
         int32_t block_count;  
         int32_t block_head_aid[BBS_article_block_limit_per_section];  
57          int32_t article_count;          int32_t article_count;
58          int32_t delete_count;          int32_t topic_count;
59            int32_t visible_article_count;
60            int32_t visible_topic_count;
61            ARTICLE *p_article_head;
62            ARTICLE *p_article_tail;
63            ARTICLE *p_page_first_article[BBS_article_limit_per_section / BBS_article_limit_per_page];
64            int32_t page_count;
65            int32_t last_page_visible_article_count;
66  };  };
67  typedef struct section_data_t SECTION_DATA;  typedef struct section_list_t SECTION_LIST;
   
 extern int section_data_pool_init(const char *filename, int article_block_count);  
 extern void section_data_pool_cleanup(void);  
68    
69  extern SECTION_DATA *section_data_create(const char *sname, const char *stitle, const char *master_name);  // article_block_count * ARTICLE_PER_BLOCK should be
70  extern int section_data_free_block(SECTION_DATA *p_section);  // no less than BBS_article_limit_per_section * BBS_max_section,
71  extern SECTION_DATA *section_data_find_by_name(const char *sname);  // in order to allocate enough memory for blocks
72    extern int article_block_init(const char *filename, int block_count);
73  extern int section_data_append_article(SECTION_DATA *p_section, const ARTICLE *p_article);  extern void article_block_cleanup(void);
74  extern ARTICLE *section_data_find_article_by_aid(SECTION_DATA *p_section, int32_t aid);  extern int article_block_reset(void);
75  extern ARTICLE *section_data_find_article_by_index(SECTION_DATA *p_section, int index);  
76  extern int section_data_mark_del_article(SECTION_DATA *p_section, int32_t aid);  extern ARTICLE *article_block_find_by_aid(int32_t aid);
77    extern ARTICLE *article_block_find_by_index(int index);
78    
79    extern int article_count_of_topic(int32_t aid);
80    
81    extern int section_list_init(const char *filename);
82    extern void section_list_cleanup(void);
83    
84    extern SECTION_LIST *section_list_create(int32_t sid, const char *sname, const char *stitle, const char *master_name);
85    extern void section_list_reset_articles(SECTION_LIST *p_section);
86    extern SECTION_LIST *section_list_find_by_name(const char *sname);
87    extern SECTION_LIST *section_list_find_by_sid(int32_t sid);
88    extern int get_section_index(SECTION_LIST *p_section);
89    
90    extern int section_list_append_article(SECTION_LIST *p_section, const ARTICLE *p_article_src);
91    extern int section_list_set_article_visible(SECTION_LIST *p_section, int32_t aid, int8_t visible);
92    
93    // *p_page, *p_offset will be set as page / offset of the article with aid in *p_section (including both visible and invisible articles)
94    // *pp_next will be set as pointer to the next article of the article with aid
95    // *pp_next will be set as head article of the section if the article with aid locates at the tail of the section
96    extern ARTICLE *section_list_find_article_with_offset(SECTION_LIST *p_section, int32_t aid, int32_t *p_page, int32_t *p_offset, ARTICLE **pp_next);
97    
98    extern int section_list_calculate_page(SECTION_LIST *p_section, int32_t start_aid);
99    extern int section_list_move_topic(SECTION_LIST *p_section_src, SECTION_LIST *p_section_dest, int32_t aid);
100    
101    extern int section_list_try_rd_lock(SECTION_LIST *p_section, int wait_sec);
102    extern int section_list_try_rw_lock(SECTION_LIST *p_section, int wait_sec);
103    extern int section_list_rd_unlock(SECTION_LIST *p_section);
104    extern int section_list_rw_unlock(SECTION_LIST *p_section);

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