| 14 |
* * |
* * |
| 15 |
***************************************************************************/ |
***************************************************************************/ |
| 16 |
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#define _GNU_SOURCE |
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|
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#include "section_list.h" |
|
| 17 |
#include "log.h" |
#include "log.h" |
| 18 |
|
#include "section_list.h" |
| 19 |
#include "trie_dict.h" |
#include "trie_dict.h" |
| 20 |
|
#include <errno.h> |
| 21 |
|
#include <signal.h> |
| 22 |
#include <stdio.h> |
#include <stdio.h> |
| 23 |
|
#include <stdlib.h> |
| 24 |
#include <string.h> |
#include <string.h> |
|
#include <signal.h> |
|
| 25 |
#include <unistd.h> |
#include <unistd.h> |
| 26 |
#include <stdlib.h> |
#include <sys/ipc.h> |
|
#include <errno.h> |
|
| 27 |
#include <sys/param.h> |
#include <sys/param.h> |
| 28 |
#include <sys/sem.h> |
#include <sys/sem.h> |
| 29 |
#include <sys/shm.h> |
#include <sys/shm.h> |
|
#include <sys/ipc.h> |
|
| 30 |
|
|
| 31 |
#ifdef _SEM_SEMUN_UNDEFINED |
#ifdef _SEM_SEMUN_UNDEFINED |
| 32 |
union semun |
union semun |
| 42 |
#define SECTION_TRY_LOCK_WAIT_TIME 1 // second |
#define SECTION_TRY_LOCK_WAIT_TIME 1 // second |
| 43 |
#define SECTION_TRY_LOCK_TIMES 10 |
#define SECTION_TRY_LOCK_TIMES 10 |
| 44 |
|
|
| 45 |
#define ARTICLE_BLOCK_PER_SHM 400 // sizeof(ARTICLE_BLOCK) * ARTICLE_BLOCK_PER_SHM is the size of each shm segment to allocate |
#define ARTICLE_BLOCK_PER_SHM 1000 // sizeof(ARTICLE_BLOCK) * ARTICLE_BLOCK_PER_SHM is the size of each shm segment to allocate |
| 46 |
#define ARTICLE_BLOCK_SHM_COUNT_LIMIT 200 // limited by length (8-bit) of proj_id in ftok(path, proj_id) |
#define ARTICLE_BLOCK_SHM_COUNT_LIMIT 80 // limited by length (8-bit) of proj_id in ftok(path, proj_id) |
| 47 |
#define ARTICLE_BLOCK_PER_POOL (ARTICLE_BLOCK_PER_SHM * ARTICLE_BLOCK_SHM_COUNT_LIMIT) |
#define ARTICLE_BLOCK_PER_POOL (ARTICLE_BLOCK_PER_SHM * ARTICLE_BLOCK_SHM_COUNT_LIMIT) |
| 48 |
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|
| 49 |
#define CALCULATE_PAGE_THRESHOLD 100 // Adjust to tune performance of move topic |
#define CALCULATE_PAGE_THRESHOLD 100 // Adjust to tune performance of moving topic between sections |
| 50 |
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|
| 51 |
#define SID_STR_LEN 5 // 32-bit + NULL |
#define SID_STR_LEN 5 // 32-bit + NULL |
| 52 |
|
|
| 75 |
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|
| 76 |
static ARTICLE_BLOCK_POOL *p_article_block_pool = NULL; |
static ARTICLE_BLOCK_POOL *p_article_block_pool = NULL; |
| 77 |
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|
| 78 |
struct section_list_pool_t |
SECTION_LIST_POOL *p_section_list_pool = NULL; |
|
{ |
|
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int shmid; |
|
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SECTION_LIST sections[BBS_max_section]; |
|
|
int section_count; |
|
|
int semid; |
|
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TRIE_NODE *p_trie_dict_section_by_name; |
|
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TRIE_NODE *p_trie_dict_section_by_sid; |
|
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}; |
|
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typedef struct section_list_pool_t SECTION_LIST_POOL; |
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|
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static SECTION_LIST_POOL *p_section_list_pool = NULL; |
|
| 79 |
|
|
| 80 |
int article_block_init(const char *filename, int block_count) |
int article_block_init(const char *filename, int block_count) |
| 81 |
{ |
{ |
| 95 |
return -1; |
return -1; |
| 96 |
} |
} |
| 97 |
|
|
| 98 |
if (block_count > ARTICLE_BLOCK_PER_POOL) |
if (block_count <= 0 || block_count > ARTICLE_BLOCK_PER_POOL) |
| 99 |
{ |
{ |
| 100 |
log_error("article_block_count exceed limit %d\n", ARTICLE_BLOCK_PER_POOL); |
log_error("article_block_count exceed limit %d\n", ARTICLE_BLOCK_PER_POOL); |
| 101 |
return -2; |
return -2; |
| 386 |
} |
} |
| 387 |
} |
} |
| 388 |
|
|
| 389 |
return (p_block->articles + left); |
if (aid != p_block->articles[left].aid) // not found |
| 390 |
|
{ |
| 391 |
|
return NULL; |
| 392 |
|
} |
| 393 |
|
|
| 394 |
|
return (p_block->articles + left); // found |
| 395 |
} |
} |
| 396 |
|
|
| 397 |
ARTICLE *article_block_find_by_index(int index) |
ARTICLE *article_block_find_by_index(int index) |
| 597 |
p_sid_str[i] = '\0'; |
p_sid_str[i] = '\0'; |
| 598 |
} |
} |
| 599 |
|
|
| 600 |
SECTION_LIST *section_list_create(int32_t sid, const char *sname, const char *stitle, const char *master_name) |
SECTION_LIST *section_list_create(int32_t sid, const char *sname, const char *stitle, const char *master_list) |
| 601 |
{ |
{ |
| 602 |
SECTION_LIST *p_section; |
SECTION_LIST *p_section; |
| 603 |
char sid_str[SID_STR_LEN]; |
char sid_str[SID_STR_LEN]; |
| 619 |
p_section = p_section_list_pool->sections + p_section_list_pool->section_count; |
p_section = p_section_list_pool->sections + p_section_list_pool->section_count; |
| 620 |
|
|
| 621 |
p_section->sid = sid; |
p_section->sid = sid; |
| 622 |
|
p_section->ex_menu_tm = 0; |
| 623 |
|
|
| 624 |
strncpy(p_section->sname, sname, sizeof(p_section->sname - 1)); |
strncpy(p_section->sname, sname, sizeof(p_section->sname) - 1); |
| 625 |
p_section->sname[sizeof(p_section->sname - 1)] = '\0'; |
p_section->sname[sizeof(p_section->sname) - 1] = '\0'; |
| 626 |
|
|
| 627 |
strncpy(p_section->stitle, stitle, sizeof(p_section->stitle - 1)); |
strncpy(p_section->stitle, stitle, sizeof(p_section->stitle) - 1); |
| 628 |
p_section->stitle[sizeof(p_section->stitle - 1)] = '\0'; |
p_section->stitle[sizeof(p_section->stitle) - 1] = '\0'; |
| 629 |
|
|
| 630 |
strncpy(p_section->master_name, master_name, sizeof(p_section->master_name - 1)); |
strncpy(p_section->master_list, master_list, sizeof(p_section->master_list) - 1); |
| 631 |
p_section->master_name[sizeof(p_section->master_name - 1)] = '\0'; |
p_section->master_list[sizeof(p_section->master_list) - 1] = '\0'; |
| 632 |
|
|
| 633 |
if (trie_dict_set(p_section_list_pool->p_trie_dict_section_by_name, sname, p_section_list_pool->section_count) != 1) |
if (trie_dict_set(p_section_list_pool->p_trie_dict_section_by_name, sname, p_section_list_pool->section_count) != 1) |
| 634 |
{ |
{ |
| 660 |
|
|
| 661 |
p_section->page_count = 0; |
p_section->page_count = 0; |
| 662 |
p_section->last_page_visible_article_count = 0; |
p_section->last_page_visible_article_count = 0; |
| 663 |
|
|
| 664 |
|
p_section->ontop_article_count = 0; |
| 665 |
} |
} |
| 666 |
|
|
| 667 |
SECTION_LIST *section_list_find_by_name(const char *sname) |
SECTION_LIST *section_list_find_by_name(const char *sname) |
| 852 |
p_section->last_page_visible_article_count++; |
p_section->last_page_visible_article_count++; |
| 853 |
} |
} |
| 854 |
|
|
| 855 |
|
if (p_article->ontop && section_list_update_article_ontop(p_section, p_article) < 0) |
| 856 |
|
{ |
| 857 |
|
log_error("section_list_update_article_ontop(sid=%d, aid=%d) error\n", |
| 858 |
|
p_section->sid, p_article->aid); |
| 859 |
|
return -5; |
| 860 |
|
} |
| 861 |
|
|
| 862 |
return 0; |
return 0; |
| 863 |
} |
} |
| 864 |
|
|
| 870 |
|
|
| 871 |
if (p_section == NULL) |
if (p_section == NULL) |
| 872 |
{ |
{ |
| 873 |
log_error("section_list_set_article_visible() NULL pointer error\n"); |
log_error("NULL pointer error\n"); |
| 874 |
return -2; |
return -1; |
| 875 |
} |
} |
| 876 |
|
|
| 877 |
p_article = article_block_find_by_aid(aid); |
p_article = article_block_find_by_aid(aid); |
| 882 |
|
|
| 883 |
if (p_section->sid != p_article->sid) |
if (p_section->sid != p_article->sid) |
| 884 |
{ |
{ |
| 885 |
log_error("section_list_set_article_visible() error: section sid %d != article sid %d\n", p_section->sid, p_article->sid); |
log_error("Inconsistent section sid %d != article sid %d\n", p_section->sid, p_article->sid); |
| 886 |
return -2; |
return -2; |
| 887 |
} |
} |
| 888 |
|
|
| 933 |
return affected_count; |
return affected_count; |
| 934 |
} |
} |
| 935 |
|
|
| 936 |
|
int section_list_update_article_ontop(SECTION_LIST *p_section, ARTICLE *p_article) |
| 937 |
|
{ |
| 938 |
|
int i; |
| 939 |
|
|
| 940 |
|
if (p_section == NULL || p_article == NULL) |
| 941 |
|
{ |
| 942 |
|
log_error("NULL pointer error\n"); |
| 943 |
|
return -1; |
| 944 |
|
} |
| 945 |
|
|
| 946 |
|
if (p_section->sid != p_article->sid) |
| 947 |
|
{ |
| 948 |
|
log_error("Inconsistent section sid %d != article sid %d\n", p_section->sid, p_article->sid); |
| 949 |
|
return -2; |
| 950 |
|
} |
| 951 |
|
|
| 952 |
|
if (p_article->ontop) |
| 953 |
|
{ |
| 954 |
|
for (i = 0; i < p_section->ontop_article_count; i++) |
| 955 |
|
{ |
| 956 |
|
if (p_section->p_ontop_articles[i]->aid == p_article->aid) |
| 957 |
|
{ |
| 958 |
|
log_error("Inconsistent state found: article %d already ontop in section %d\n", p_article->aid, p_section->sid); |
| 959 |
|
return 0; |
| 960 |
|
} |
| 961 |
|
else if (p_section->p_ontop_articles[i]->aid > p_article->aid) |
| 962 |
|
{ |
| 963 |
|
break; |
| 964 |
|
} |
| 965 |
|
} |
| 966 |
|
|
| 967 |
|
// Remove the oldest one if the array of ontop articles is full |
| 968 |
|
if (p_section->ontop_article_count >= BBS_ontop_article_limit_per_section) |
| 969 |
|
{ |
| 970 |
|
if (i == 0) // p_article is the oldest one |
| 971 |
|
{ |
| 972 |
|
return 0; |
| 973 |
|
} |
| 974 |
|
memmove((void *)(p_section->p_ontop_articles), |
| 975 |
|
(void *)(p_section->p_ontop_articles + 1), |
| 976 |
|
sizeof(ARTICLE *) * (size_t)(i - 1)); |
| 977 |
|
p_section->ontop_article_count--; |
| 978 |
|
i--; |
| 979 |
|
} |
| 980 |
|
else |
| 981 |
|
{ |
| 982 |
|
memmove((void *)(p_section->p_ontop_articles + i + 1), |
| 983 |
|
(void *)(p_section->p_ontop_articles + i), |
| 984 |
|
sizeof(ARTICLE *) * (size_t)(p_section->ontop_article_count - i)); |
| 985 |
|
} |
| 986 |
|
|
| 987 |
|
p_section->p_ontop_articles[i] = p_article; |
| 988 |
|
p_section->ontop_article_count++; |
| 989 |
|
|
| 990 |
|
// TODO: debug |
| 991 |
|
} |
| 992 |
|
else // ontop == 0 |
| 993 |
|
{ |
| 994 |
|
for (i = 0; i < p_section->ontop_article_count; i++) |
| 995 |
|
{ |
| 996 |
|
if (p_section->p_ontop_articles[i]->aid == p_article->aid) |
| 997 |
|
{ |
| 998 |
|
break; |
| 999 |
|
} |
| 1000 |
|
} |
| 1001 |
|
if (i == p_section->ontop_article_count) // not found |
| 1002 |
|
{ |
| 1003 |
|
log_error("Inconsistent state found: article %d not ontop in section %d\n", p_article->aid, p_section->sid); |
| 1004 |
|
return 0; |
| 1005 |
|
} |
| 1006 |
|
|
| 1007 |
|
memmove((void *)(p_section->p_ontop_articles + i), |
| 1008 |
|
(void *)(p_section->p_ontop_articles + i + 1), |
| 1009 |
|
sizeof(ARTICLE *) * (size_t)(p_section->ontop_article_count - i - 1)); |
| 1010 |
|
p_section->ontop_article_count--; |
| 1011 |
|
} |
| 1012 |
|
|
| 1013 |
|
return 0; |
| 1014 |
|
} |
| 1015 |
|
|
| 1016 |
|
int section_list_page_count_with_ontop(SECTION_LIST *p_section) |
| 1017 |
|
{ |
| 1018 |
|
int page_count; |
| 1019 |
|
|
| 1020 |
|
if (p_section == NULL) |
| 1021 |
|
{ |
| 1022 |
|
log_error("NULL pointer error\n"); |
| 1023 |
|
return -1; |
| 1024 |
|
} |
| 1025 |
|
|
| 1026 |
|
page_count = p_section->page_count - 1 + |
| 1027 |
|
(p_section->last_page_visible_article_count + p_section->ontop_article_count) / BBS_article_limit_per_page + |
| 1028 |
|
((p_section->last_page_visible_article_count + p_section->ontop_article_count) % BBS_article_limit_per_page == 0 ? 0 : 1); |
| 1029 |
|
|
| 1030 |
|
return page_count; |
| 1031 |
|
} |
| 1032 |
|
|
| 1033 |
|
int section_list_page_article_count_with_ontop(SECTION_LIST *p_section, int32_t page_id) |
| 1034 |
|
{ |
| 1035 |
|
if (p_section == NULL) |
| 1036 |
|
{ |
| 1037 |
|
log_error("NULL pointer error\n"); |
| 1038 |
|
return -1; |
| 1039 |
|
} |
| 1040 |
|
|
| 1041 |
|
if (page_id < p_section->page_count - 1) |
| 1042 |
|
{ |
| 1043 |
|
return BBS_article_limit_per_page; |
| 1044 |
|
} |
| 1045 |
|
else // if (page_id >= p_section->page_count - 1) |
| 1046 |
|
{ |
| 1047 |
|
return MAX(0, (p_section->last_page_visible_article_count + p_section->ontop_article_count - |
| 1048 |
|
BBS_article_limit_per_page * (page_id - p_section->page_count + 1))); |
| 1049 |
|
} |
| 1050 |
|
} |
| 1051 |
|
|
| 1052 |
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) |
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) |
| 1053 |
{ |
{ |
| 1054 |
ARTICLE *p_article; |
ARTICLE *p_article; |
| 1256 |
return last_aid; |
return last_aid; |
| 1257 |
} |
} |
| 1258 |
|
|
| 1259 |
|
int article_block_article_count(void) |
| 1260 |
|
{ |
| 1261 |
|
int ret; |
| 1262 |
|
|
| 1263 |
|
if (p_article_block_pool == NULL || p_article_block_pool->block_count <= 0) |
| 1264 |
|
{ |
| 1265 |
|
return -1; |
| 1266 |
|
} |
| 1267 |
|
|
| 1268 |
|
ret = (p_article_block_pool->block_count - 1) * ARTICLE_PER_BLOCK + |
| 1269 |
|
p_article_block_pool->p_block[p_article_block_pool->block_count - 1]->article_count; |
| 1270 |
|
|
| 1271 |
|
return ret; |
| 1272 |
|
} |
| 1273 |
|
|
| 1274 |
int article_count_of_topic(int32_t aid) |
int article_count_of_topic(int32_t aid) |
| 1275 |
{ |
{ |
| 1276 |
ARTICLE *p_article; |
ARTICLE *p_article; |
| 1311 |
int32_t first_inserted_aid_dest; |
int32_t first_inserted_aid_dest; |
| 1312 |
int move_counter; |
int move_counter; |
| 1313 |
|
|
| 1314 |
if (p_section_dest == NULL) |
if (p_section_src == NULL || p_section_dest == NULL) |
| 1315 |
{ |
{ |
| 1316 |
log_error("section_list_move_topic() NULL pointer error\n"); |
log_error("section_list_move_topic() NULL pointer error\n"); |
| 1317 |
return -1; |
return -1; |
| 1318 |
} |
} |
| 1319 |
|
|
| 1320 |
|
if (p_section_src->sid == p_section_dest->sid) |
| 1321 |
|
{ |
| 1322 |
|
log_error("section_list_move_topic() src and dest section are the same\n"); |
| 1323 |
|
return -1; |
| 1324 |
|
} |
| 1325 |
|
|
| 1326 |
if ((p_article = article_block_find_by_aid(aid)) == NULL) |
if ((p_article = article_block_find_by_aid(aid)) == NULL) |
| 1327 |
{ |
{ |
| 1328 |
log_error("section_list_move_topic() error: article %d not found in block\n", aid); |
log_error("article_block_find_by_aid(aid = %d) error: article not found\n", aid); |
| 1329 |
return -2; |
return -2; |
| 1330 |
} |
} |
| 1331 |
|
|
| 1366 |
{ |
{ |
| 1367 |
if (p_section_src->sid != p_article->sid) |
if (p_section_src->sid != p_article->sid) |
| 1368 |
{ |
{ |
| 1369 |
log_error("section_list_move_topic() error: src section sid %d != article %d sid %d\n", |
log_error("section_list_move_topic() warning: src section sid %d != article %d sid %d\n", |
| 1370 |
p_section_src->sid, p_article->aid, p_article->sid); |
p_section_src->sid, p_article->aid, p_article->sid); |
| 1371 |
return -2; |
p_article = p_article->p_topic_next; |
| 1372 |
|
continue; |
| 1373 |
} |
} |
| 1374 |
|
|
| 1375 |
// Remove from bi-directional article list of src section |
// Remove from bi-directional article list of src section |
| 1395 |
|
|
| 1396 |
if (section_list_find_article_with_offset(p_section_dest, p_article->aid, &page, &offset, &p_next) != NULL) |
if (section_list_find_article_with_offset(p_section_dest, p_article->aid, &page, &offset, &p_next) != NULL) |
| 1397 |
{ |
{ |
| 1398 |
log_error("section_list_move_topic() error: article %d already in section %d\n", p_article->aid, p_section_dest->sid); |
log_error("section_list_move_topic() warning: article %d already in section %d\n", p_article->aid, p_section_dest->sid); |
| 1399 |
return -4; |
p_article = p_article->p_topic_next; |
| 1400 |
|
continue; |
| 1401 |
} |
} |
| 1402 |
|
|
| 1403 |
// Insert into bi-directional article list of dest section |
// Insert into bi-directional article list of dest section |
| 1475 |
|
|
| 1476 |
if (p_section_dest->article_count - dest_article_count_old != move_article_count) |
if (p_section_dest->article_count - dest_article_count_old != move_article_count) |
| 1477 |
{ |
{ |
| 1478 |
log_error("section_list_move_topic() error: count of moved articles %d != %d\n", |
log_error("section_list_move_topic() warning: count of moved articles %d != %d\n", |
| 1479 |
p_section_dest->article_count - dest_article_count_old, move_article_count); |
p_section_dest->article_count - dest_article_count_old, move_article_count); |
| 1480 |
} |
} |
| 1481 |
|
|
| 1685 |
timer++; |
timer++; |
| 1686 |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
| 1687 |
{ |
{ |
| 1688 |
log_error("section_list_rd_lock() tried %d times on section %d\n", sid, timer); |
log_error("section_list_try_rd_lock() tried %d times on section %d\n", sid, timer); |
| 1689 |
} |
} |
| 1690 |
} |
} |
| 1691 |
else // failed |
else // failed |
| 1692 |
{ |
{ |
| 1693 |
log_error("section_list_rd_lock() failed on section %d\n", sid); |
log_error("section_list_try_rd_lock() failed on section %d\n", sid); |
| 1694 |
break; |
break; |
| 1695 |
} |
} |
| 1696 |
} |
} |
| 1716 |
timer++; |
timer++; |
| 1717 |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
| 1718 |
{ |
{ |
| 1719 |
log_error("acquire_section_rw_lock() tried %d times on section %d\n", sid, timer); |
log_error("section_list_try_rw_lock() tried %d times on section %d\n", sid, timer); |
| 1720 |
} |
} |
| 1721 |
} |
} |
| 1722 |
else // failed |
else // failed |
| 1723 |
{ |
{ |
| 1724 |
log_error("acquire_section_rw_lock() failed on section %d\n", sid); |
log_error("section_list_try_rw_lock() failed on section %d\n", sid); |
| 1725 |
break; |
break; |
| 1726 |
} |
} |
| 1727 |
} |
} |