| 14 |
* * |
* * |
| 15 |
***************************************************************************/ |
***************************************************************************/ |
| 16 |
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#define _GNU_SOURCE |
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#include "section_list.h" |
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| 17 |
#include "log.h" |
#include "log.h" |
| 18 |
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#include "section_list.h" |
| 19 |
#include "trie_dict.h" |
#include "trie_dict.h" |
| 20 |
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#include "user_list.h" |
| 21 |
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#include <errno.h> |
| 22 |
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#include <signal.h> |
| 23 |
#include <stdio.h> |
#include <stdio.h> |
| 24 |
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#include <stdlib.h> |
| 25 |
#include <string.h> |
#include <string.h> |
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#include <signal.h> |
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| 26 |
#include <unistd.h> |
#include <unistd.h> |
| 27 |
#include <stdlib.h> |
#include <sys/ipc.h> |
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#include <errno.h> |
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| 28 |
#include <sys/param.h> |
#include <sys/param.h> |
| 29 |
#include <sys/sem.h> |
#include <sys/sem.h> |
| 30 |
#include <sys/shm.h> |
#include <sys/shm.h> |
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#include <sys/ipc.h> |
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| 31 |
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| 32 |
#ifdef _SEM_SEMUN_UNDEFINED |
#ifdef _SEM_SEMUN_UNDEFINED |
| 33 |
union semun |
union semun |
| 43 |
#define SECTION_TRY_LOCK_WAIT_TIME 1 // second |
#define SECTION_TRY_LOCK_WAIT_TIME 1 // second |
| 44 |
#define SECTION_TRY_LOCK_TIMES 10 |
#define SECTION_TRY_LOCK_TIMES 10 |
| 45 |
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| 46 |
#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 |
| 47 |
#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) |
| 48 |
#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) |
| 49 |
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| 50 |
#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 |
| 51 |
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| 52 |
#define SID_STR_LEN 5 // 32-bit + NULL |
#define SID_STR_LEN 5 // 32-bit + NULL |
| 53 |
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| 76 |
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| 77 |
static ARTICLE_BLOCK_POOL *p_article_block_pool = NULL; |
static ARTICLE_BLOCK_POOL *p_article_block_pool = NULL; |
| 78 |
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| 79 |
struct section_list_pool_t |
SECTION_LIST_POOL *p_section_list_pool = NULL; |
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{ |
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int shmid; |
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SECTION_LIST sections[BBS_max_section]; |
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int section_count; |
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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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static SECTION_LIST_POOL *p_section_list_pool = NULL; |
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| 80 |
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| 81 |
int article_block_init(const char *filename, int block_count) |
int article_block_init(const char *filename, int block_count) |
| 82 |
{ |
{ |
| 96 |
return -1; |
return -1; |
| 97 |
} |
} |
| 98 |
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| 99 |
if (block_count > ARTICLE_BLOCK_PER_POOL) |
if (block_count <= 0 || block_count > ARTICLE_BLOCK_PER_POOL) |
| 100 |
{ |
{ |
| 101 |
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); |
| 102 |
return -2; |
return -2; |
| 224 |
p_article_block_pool = NULL; |
p_article_block_pool = NULL; |
| 225 |
} |
} |
| 226 |
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| 227 |
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int set_article_block_shm_readonly(void) |
| 228 |
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{ |
| 229 |
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int shmid; |
| 230 |
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void *p_shm; |
| 231 |
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int i; |
| 232 |
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| 233 |
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if (p_article_block_pool == NULL) |
| 234 |
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{ |
| 235 |
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log_error("article_block_pool not initialized\n"); |
| 236 |
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return -1; |
| 237 |
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} |
| 238 |
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| 239 |
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for (i = 0; i < p_article_block_pool->shm_count; i++) |
| 240 |
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{ |
| 241 |
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shmid = (p_article_block_pool->shm_pool + i)->shmid; |
| 242 |
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| 243 |
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// Remap shared memory in read-only mode |
| 244 |
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p_shm = shmat(shmid, (p_article_block_pool->shm_pool + i)->p_shm, SHM_RDONLY | SHM_REMAP); |
| 245 |
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if (p_shm == (void *)-1) |
| 246 |
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{ |
| 247 |
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log_error("shmat(article_block_pool shmid = %d) error (%d)\n", shmid, errno); |
| 248 |
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return -2; |
| 249 |
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} |
| 250 |
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} |
| 251 |
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| 252 |
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return 0; |
| 253 |
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} |
| 254 |
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| 255 |
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int detach_article_block_shm(void) |
| 256 |
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{ |
| 257 |
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int shmid; |
| 258 |
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| 259 |
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if (p_article_block_pool == NULL) |
| 260 |
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{ |
| 261 |
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return -1; |
| 262 |
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} |
| 263 |
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| 264 |
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for (int i = 0; i < p_article_block_pool->shm_count; i++) |
| 265 |
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{ |
| 266 |
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if ((p_article_block_pool->shm_pool + i)->p_shm != NULL && shmdt((p_article_block_pool->shm_pool + i)->p_shm) == -1) |
| 267 |
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{ |
| 268 |
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log_error("shmdt(shmid = %d) error (%d)\n", (p_article_block_pool->shm_pool + i)->shmid, errno); |
| 269 |
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return -2; |
| 270 |
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} |
| 271 |
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} |
| 272 |
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| 273 |
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shmid = p_article_block_pool->shmid; |
| 274 |
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| 275 |
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if (shmdt(p_article_block_pool) == -1) |
| 276 |
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{ |
| 277 |
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log_error("shmdt(shmid = %d) error (%d)\n", shmid, errno); |
| 278 |
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return -3; |
| 279 |
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} |
| 280 |
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| 281 |
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p_article_block_pool = NULL; |
| 282 |
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| 283 |
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return 0; |
| 284 |
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} |
| 285 |
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| 286 |
inline static ARTICLE_BLOCK *pop_free_article_block(void) |
inline static ARTICLE_BLOCK *pop_free_article_block(void) |
| 287 |
{ |
{ |
| 288 |
ARTICLE_BLOCK *p_block = NULL; |
ARTICLE_BLOCK *p_block = NULL; |
| 343 |
} |
} |
| 344 |
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| 345 |
left = 0; |
left = 0; |
| 346 |
right = p_article_block_pool->block_count; |
right = p_article_block_pool->block_count - 1; |
| 347 |
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|
| 348 |
// aid in the range [ head aid of blocks[left], tail aid of blocks[right - 1] ] |
// aid in the range [ head aid of blocks[left], tail aid of blocks[right] ] |
| 349 |
while (left < right - 1) |
while (left < right) |
| 350 |
{ |
{ |
| 351 |
// get block offset no less than mid value of left and right block offsets |
// get block offset no less than mid value of left and right block offsets |
| 352 |
mid = (left + right) / 2 + (right - left) % 2; |
mid = (left + right) / 2 + (left + right) % 2; |
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if (mid >= p_article_block_pool->block_count) |
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{ |
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log_error("block(mid = %d) is out of boundary\n", mid); |
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return NULL; |
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} |
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| 353 |
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| 354 |
if (aid < p_article_block_pool->p_block[mid]->articles[0].aid) |
if (aid < p_article_block_pool->p_block[mid]->articles[0].aid) |
| 355 |
{ |
{ |
| 356 |
right = mid; |
right = mid - 1; |
| 357 |
} |
} |
| 358 |
else |
else // if (aid >= p_article_block_pool->p_block[mid]->articles[0].aid) |
| 359 |
{ |
{ |
| 360 |
left = mid; |
left = mid; |
| 361 |
} |
} |
| 381 |
} |
} |
| 382 |
} |
} |
| 383 |
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|
| 384 |
return (p_block->articles + left); |
if (aid != p_block->articles[left].aid) // not found |
| 385 |
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{ |
| 386 |
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return NULL; |
| 387 |
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} |
| 388 |
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| 389 |
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return (p_block->articles + left); // found |
| 390 |
} |
} |
| 391 |
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|
| 392 |
ARTICLE *article_block_find_by_index(int index) |
ARTICLE *article_block_find_by_index(int index) |
| 498 |
return 0; |
return 0; |
| 499 |
} |
} |
| 500 |
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| 501 |
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void section_list_cleanup(void) |
| 502 |
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{ |
| 503 |
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int shmid; |
| 504 |
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| 505 |
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if (p_section_list_pool == NULL) |
| 506 |
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{ |
| 507 |
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return; |
| 508 |
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} |
| 509 |
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| 510 |
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if (p_section_list_pool->p_trie_dict_section_by_name != NULL) |
| 511 |
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{ |
| 512 |
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trie_dict_destroy(p_section_list_pool->p_trie_dict_section_by_name); |
| 513 |
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p_section_list_pool->p_trie_dict_section_by_name = NULL; |
| 514 |
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} |
| 515 |
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|
| 516 |
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if (p_section_list_pool->p_trie_dict_section_by_sid != NULL) |
| 517 |
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{ |
| 518 |
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trie_dict_destroy(p_section_list_pool->p_trie_dict_section_by_sid); |
| 519 |
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p_section_list_pool->p_trie_dict_section_by_sid = NULL; |
| 520 |
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} |
| 521 |
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| 522 |
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shmid = p_section_list_pool->shmid; |
| 523 |
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| 524 |
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if (semctl(p_section_list_pool->semid, 0, IPC_RMID) == -1) |
| 525 |
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{ |
| 526 |
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log_error("semctl(semid = %d, IPC_RMID) error (%d)\n", p_section_list_pool->semid, errno); |
| 527 |
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} |
| 528 |
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| 529 |
|
if (shmdt(p_section_list_pool) == -1) |
| 530 |
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{ |
| 531 |
|
log_error("shmdt(shmid = %d) error (%d)\n", shmid, errno); |
| 532 |
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} |
| 533 |
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|
| 534 |
|
if (shmctl(shmid, IPC_RMID, NULL) == -1) |
| 535 |
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{ |
| 536 |
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log_error("shmctl(shmid = %d, IPC_RMID) error (%d)\n", shmid, errno); |
| 537 |
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} |
| 538 |
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| 539 |
|
p_section_list_pool = NULL; |
| 540 |
|
} |
| 541 |
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| 542 |
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int set_section_list_shm_readonly(void) |
| 543 |
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{ |
| 544 |
|
int shmid; |
| 545 |
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void *p_shm; |
| 546 |
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|
| 547 |
|
if (p_section_list_pool == NULL) |
| 548 |
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{ |
| 549 |
|
log_error("p_section_list_pool not initialized\n"); |
| 550 |
|
return -1; |
| 551 |
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} |
| 552 |
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|
| 553 |
|
shmid = p_section_list_pool->shmid; |
| 554 |
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|
| 555 |
|
// Remap shared memory in read-only mode |
| 556 |
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p_shm = shmat(shmid, p_section_list_pool, SHM_RDONLY | SHM_REMAP); |
| 557 |
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if (p_shm == (void *)-1) |
| 558 |
|
{ |
| 559 |
|
log_error("shmat(section_list_pool shmid = %d) error (%d)\n", shmid, errno); |
| 560 |
|
return -3; |
| 561 |
|
} |
| 562 |
|
|
| 563 |
|
p_section_list_pool = p_shm; |
| 564 |
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|
| 565 |
|
return 0; |
| 566 |
|
} |
| 567 |
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|
| 568 |
|
int detach_section_list_shm(void) |
| 569 |
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{ |
| 570 |
|
if (p_section_list_pool != NULL && shmdt(p_section_list_pool) == -1) |
| 571 |
|
{ |
| 572 |
|
log_error("shmdt(section_list_pool) error (%d)\n", errno); |
| 573 |
|
return -1; |
| 574 |
|
} |
| 575 |
|
|
| 576 |
|
p_section_list_pool = NULL; |
| 577 |
|
|
| 578 |
|
return 0; |
| 579 |
|
} |
| 580 |
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|
| 581 |
inline static void sid_to_str(int32_t sid, char *p_sid_str) |
inline static void sid_to_str(int32_t sid, char *p_sid_str) |
| 582 |
{ |
{ |
| 583 |
uint32_t u_sid; |
uint32_t u_sid; |
| 592 |
p_sid_str[i] = '\0'; |
p_sid_str[i] = '\0'; |
| 593 |
} |
} |
| 594 |
|
|
| 595 |
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) |
| 596 |
{ |
{ |
| 597 |
SECTION_LIST *p_section; |
SECTION_LIST *p_section; |
| 598 |
char sid_str[SID_STR_LEN]; |
char sid_str[SID_STR_LEN]; |
| 614 |
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; |
| 615 |
|
|
| 616 |
p_section->sid = sid; |
p_section->sid = sid; |
| 617 |
|
p_section->ex_menu_tm = 0; |
| 618 |
|
|
| 619 |
strncpy(p_section->sname, sname, sizeof(p_section->sname - 1)); |
strncpy(p_section->sname, sname, sizeof(p_section->sname) - 1); |
| 620 |
p_section->sname[sizeof(p_section->sname - 1)] = '\0'; |
p_section->sname[sizeof(p_section->sname) - 1] = '\0'; |
| 621 |
|
|
| 622 |
strncpy(p_section->stitle, stitle, sizeof(p_section->stitle - 1)); |
strncpy(p_section->stitle, stitle, sizeof(p_section->stitle) - 1); |
| 623 |
p_section->stitle[sizeof(p_section->stitle - 1)] = '\0'; |
p_section->stitle[sizeof(p_section->stitle) - 1] = '\0'; |
| 624 |
|
|
| 625 |
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); |
| 626 |
p_section->master_name[sizeof(p_section->master_name - 1)] = '\0'; |
p_section->master_list[sizeof(p_section->master_list) - 1] = '\0'; |
| 627 |
|
|
| 628 |
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) |
| 629 |
{ |
{ |
| 644 |
return p_section; |
return p_section; |
| 645 |
} |
} |
| 646 |
|
|
| 647 |
void section_list_reset_articles(SECTION_LIST *p_section) |
int section_list_update(SECTION_LIST *p_section, const char *sname, const char *stitle, const char *master_list) |
|
{ |
|
|
p_section->article_count = 0; |
|
|
p_section->topic_count = 0; |
|
|
p_section->visible_article_count = 0; |
|
|
p_section->visible_topic_count = 0; |
|
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p_section->p_article_head = NULL; |
|
|
p_section->p_article_tail = NULL; |
|
|
|
|
|
p_section->page_count = 0; |
|
|
p_section->last_page_visible_article_count = 0; |
|
|
} |
|
|
|
|
|
void section_list_cleanup(void) |
|
| 648 |
{ |
{ |
| 649 |
int shmid; |
int64_t index; |
| 650 |
|
|
| 651 |
if (p_section_list_pool == NULL) |
if (p_section == NULL || sname == NULL || stitle == NULL || master_list == NULL) |
| 652 |
{ |
{ |
| 653 |
return; |
log_error("NULL pointer error\n"); |
| 654 |
|
return -1; |
| 655 |
} |
} |
| 656 |
|
|
| 657 |
if (p_section_list_pool->p_trie_dict_section_by_name != NULL) |
index = get_section_index(p_section); |
|
{ |
|
|
trie_dict_destroy(p_section_list_pool->p_trie_dict_section_by_name); |
|
|
p_section_list_pool->p_trie_dict_section_by_name = NULL; |
|
|
} |
|
| 658 |
|
|
| 659 |
if (p_section_list_pool->p_trie_dict_section_by_sid != NULL) |
strncpy(p_section->sname, sname, sizeof(p_section->sname) - 1); |
| 660 |
{ |
p_section->sname[sizeof(p_section->sname) - 1] = '\0'; |
|
trie_dict_destroy(p_section_list_pool->p_trie_dict_section_by_sid); |
|
|
p_section_list_pool->p_trie_dict_section_by_sid = NULL; |
|
|
} |
|
| 661 |
|
|
| 662 |
if (p_section_list_pool != NULL) |
strncpy(p_section->stitle, stitle, sizeof(p_section->stitle) - 1); |
| 663 |
|
p_section->stitle[sizeof(p_section->stitle) - 1] = '\0'; |
| 664 |
|
|
| 665 |
|
strncpy(p_section->master_list, master_list, sizeof(p_section->master_list) - 1); |
| 666 |
|
p_section->master_list[sizeof(p_section->master_list) - 1] = '\0'; |
| 667 |
|
|
| 668 |
|
if (trie_dict_set(p_section_list_pool->p_trie_dict_section_by_name, sname, index) < 0) |
| 669 |
{ |
{ |
| 670 |
if (semctl(p_section_list_pool->semid, 0, IPC_RMID) == -1) |
log_error("trie_dict_set(section, %s, %d) error\n", sname, index); |
| 671 |
{ |
return -2; |
| 672 |
log_error("semctl(semid = %d, IPC_RMID) error (%d)\n", p_section_list_pool->semid, errno); |
} |
|
} |
|
| 673 |
|
|
| 674 |
shmid = p_section_list_pool->shmid; |
return 0; |
| 675 |
|
} |
| 676 |
|
|
| 677 |
if (shmdt(p_section_list_pool) == -1) |
void section_list_reset_articles(SECTION_LIST *p_section) |
| 678 |
{ |
{ |
| 679 |
log_error("shmdt(shmid = %d) error (%d)\n", shmid, errno); |
p_section->article_count = 0; |
| 680 |
} |
p_section->topic_count = 0; |
| 681 |
|
p_section->visible_article_count = 0; |
| 682 |
|
p_section->visible_topic_count = 0; |
| 683 |
|
p_section->p_article_head = NULL; |
| 684 |
|
p_section->p_article_tail = NULL; |
| 685 |
|
|
| 686 |
if (shmctl(shmid, IPC_RMID, NULL) == -1) |
p_section->page_count = 0; |
| 687 |
{ |
p_section->last_page_visible_article_count = 0; |
|
log_error("shmctl(shmid = %d, IPC_RMID) error (%d)\n", shmid, errno); |
|
|
} |
|
| 688 |
|
|
| 689 |
p_section_list_pool = NULL; |
p_section->ontop_article_count = 0; |
|
} |
|
| 690 |
} |
} |
| 691 |
|
|
| 692 |
SECTION_LIST *section_list_find_by_name(const char *sname) |
SECTION_LIST *section_list_find_by_name(const char *sname) |
| 752 |
|
|
| 753 |
if (p_section == NULL || p_article_src == NULL) |
if (p_section == NULL || p_article_src == NULL) |
| 754 |
{ |
{ |
| 755 |
log_error("section_list_append_article() NULL pointer error\n"); |
log_error("NULL pointer error\n"); |
| 756 |
return -1; |
return -1; |
| 757 |
} |
} |
| 758 |
|
|
| 877 |
p_section->last_page_visible_article_count++; |
p_section->last_page_visible_article_count++; |
| 878 |
} |
} |
| 879 |
|
|
| 880 |
|
if (p_article->ontop && section_list_update_article_ontop(p_section, p_article) < 0) |
| 881 |
|
{ |
| 882 |
|
log_error("section_list_update_article_ontop(sid=%d, aid=%d) error\n", |
| 883 |
|
p_section->sid, p_article->aid); |
| 884 |
|
return -5; |
| 885 |
|
} |
| 886 |
|
|
| 887 |
return 0; |
return 0; |
| 888 |
} |
} |
| 889 |
|
|
| 895 |
|
|
| 896 |
if (p_section == NULL) |
if (p_section == NULL) |
| 897 |
{ |
{ |
| 898 |
log_error("section_list_set_article_visible() NULL pointer error\n"); |
log_error("NULL pointer error\n"); |
| 899 |
return -2; |
return -1; |
| 900 |
} |
} |
| 901 |
|
|
| 902 |
p_article = article_block_find_by_aid(aid); |
p_article = article_block_find_by_aid(aid); |
| 907 |
|
|
| 908 |
if (p_section->sid != p_article->sid) |
if (p_section->sid != p_article->sid) |
| 909 |
{ |
{ |
| 910 |
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); |
| 911 |
return -2; |
return -2; |
| 912 |
} |
} |
| 913 |
|
|
| 920 |
{ |
{ |
| 921 |
p_section->visible_article_count--; |
p_section->visible_article_count--; |
| 922 |
|
|
| 923 |
|
if (user_article_cnt_inc(p_article->uid, -1) < 0) |
| 924 |
|
{ |
| 925 |
|
log_error("user_article_cnt_inc(uid=%d, -1) error\n", p_article->uid); |
| 926 |
|
} |
| 927 |
|
|
| 928 |
if (p_article->tid == 0) |
if (p_article->tid == 0) |
| 929 |
{ |
{ |
| 930 |
p_section->visible_topic_count--; |
p_section->visible_topic_count--; |
| 943 |
p_reply->visible = 0; |
p_reply->visible = 0; |
| 944 |
p_section->visible_article_count--; |
p_section->visible_article_count--; |
| 945 |
affected_count++; |
affected_count++; |
| 946 |
|
|
| 947 |
|
if (user_article_cnt_inc(p_reply->uid, -1) < 0) |
| 948 |
|
{ |
| 949 |
|
log_error("user_article_cnt_inc(uid=%d, -1) error\n", p_reply->uid); |
| 950 |
|
} |
| 951 |
} |
} |
| 952 |
} |
} |
| 953 |
} |
} |
| 960 |
{ |
{ |
| 961 |
p_section->visible_topic_count++; |
p_section->visible_topic_count++; |
| 962 |
} |
} |
| 963 |
|
|
| 964 |
|
if (user_article_cnt_inc(p_article->uid, 1) < 0) |
| 965 |
|
{ |
| 966 |
|
log_error("user_article_cnt_inc(uid=%d, 1) error\n", p_article->uid); |
| 967 |
|
} |
| 968 |
} |
} |
| 969 |
|
|
| 970 |
p_article->visible = visible; |
p_article->visible = visible; |
| 973 |
return affected_count; |
return affected_count; |
| 974 |
} |
} |
| 975 |
|
|
| 976 |
|
int section_list_update_article_ontop(SECTION_LIST *p_section, ARTICLE *p_article) |
| 977 |
|
{ |
| 978 |
|
int i; |
| 979 |
|
|
| 980 |
|
if (p_section == NULL || p_article == NULL) |
| 981 |
|
{ |
| 982 |
|
log_error("NULL pointer error\n"); |
| 983 |
|
return -1; |
| 984 |
|
} |
| 985 |
|
|
| 986 |
|
if (p_section->sid != p_article->sid) |
| 987 |
|
{ |
| 988 |
|
log_error("Inconsistent section sid %d != article sid %d\n", p_section->sid, p_article->sid); |
| 989 |
|
return -2; |
| 990 |
|
} |
| 991 |
|
|
| 992 |
|
if (p_article->ontop) |
| 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 |
|
log_error("Inconsistent state found: article %d already ontop in section %d\n", p_article->aid, p_section->sid); |
| 999 |
|
return 0; |
| 1000 |
|
} |
| 1001 |
|
else if (p_section->p_ontop_articles[i]->aid > p_article->aid) |
| 1002 |
|
{ |
| 1003 |
|
break; |
| 1004 |
|
} |
| 1005 |
|
} |
| 1006 |
|
|
| 1007 |
|
// Remove the oldest one if the array of ontop articles is full |
| 1008 |
|
if (p_section->ontop_article_count >= BBS_ontop_article_limit_per_section) |
| 1009 |
|
{ |
| 1010 |
|
if (i == 0) // p_article is the oldest one |
| 1011 |
|
{ |
| 1012 |
|
return 0; |
| 1013 |
|
} |
| 1014 |
|
memmove((void *)(p_section->p_ontop_articles), |
| 1015 |
|
(void *)(p_section->p_ontop_articles + 1), |
| 1016 |
|
sizeof(ARTICLE *) * (size_t)(i - 1)); |
| 1017 |
|
p_section->ontop_article_count--; |
| 1018 |
|
i--; |
| 1019 |
|
} |
| 1020 |
|
else |
| 1021 |
|
{ |
| 1022 |
|
memmove((void *)(p_section->p_ontop_articles + i + 1), |
| 1023 |
|
(void *)(p_section->p_ontop_articles + i), |
| 1024 |
|
sizeof(ARTICLE *) * (size_t)(p_section->ontop_article_count - i)); |
| 1025 |
|
} |
| 1026 |
|
|
| 1027 |
|
p_section->p_ontop_articles[i] = p_article; |
| 1028 |
|
p_section->ontop_article_count++; |
| 1029 |
|
|
| 1030 |
|
// TODO: debug |
| 1031 |
|
} |
| 1032 |
|
else // ontop == 0 |
| 1033 |
|
{ |
| 1034 |
|
for (i = 0; i < p_section->ontop_article_count; i++) |
| 1035 |
|
{ |
| 1036 |
|
if (p_section->p_ontop_articles[i]->aid == p_article->aid) |
| 1037 |
|
{ |
| 1038 |
|
break; |
| 1039 |
|
} |
| 1040 |
|
} |
| 1041 |
|
if (i == p_section->ontop_article_count) // not found |
| 1042 |
|
{ |
| 1043 |
|
log_error("Inconsistent state found: article %d not ontop in section %d\n", p_article->aid, p_section->sid); |
| 1044 |
|
return 0; |
| 1045 |
|
} |
| 1046 |
|
|
| 1047 |
|
memmove((void *)(p_section->p_ontop_articles + i), |
| 1048 |
|
(void *)(p_section->p_ontop_articles + i + 1), |
| 1049 |
|
sizeof(ARTICLE *) * (size_t)(p_section->ontop_article_count - i - 1)); |
| 1050 |
|
p_section->ontop_article_count--; |
| 1051 |
|
} |
| 1052 |
|
|
| 1053 |
|
return 0; |
| 1054 |
|
} |
| 1055 |
|
|
| 1056 |
|
int section_list_page_count_with_ontop(SECTION_LIST *p_section) |
| 1057 |
|
{ |
| 1058 |
|
int page_count; |
| 1059 |
|
|
| 1060 |
|
if (p_section == NULL) |
| 1061 |
|
{ |
| 1062 |
|
log_error("NULL pointer error\n"); |
| 1063 |
|
return -1; |
| 1064 |
|
} |
| 1065 |
|
|
| 1066 |
|
page_count = p_section->page_count - (p_section->last_page_visible_article_count > 0 ? 1 : 0) + |
| 1067 |
|
(p_section->last_page_visible_article_count + p_section->ontop_article_count) / BBS_article_limit_per_page + |
| 1068 |
|
((p_section->last_page_visible_article_count + p_section->ontop_article_count) % BBS_article_limit_per_page == 0 ? 0 : 1); |
| 1069 |
|
|
| 1070 |
|
return page_count; |
| 1071 |
|
} |
| 1072 |
|
|
| 1073 |
|
int section_list_page_article_count_with_ontop(SECTION_LIST *p_section, int32_t page_id) |
| 1074 |
|
{ |
| 1075 |
|
if (p_section == NULL) |
| 1076 |
|
{ |
| 1077 |
|
log_error("NULL pointer error\n"); |
| 1078 |
|
return -1; |
| 1079 |
|
} |
| 1080 |
|
|
| 1081 |
|
if (page_id < p_section->page_count - 1) |
| 1082 |
|
{ |
| 1083 |
|
return BBS_article_limit_per_page; |
| 1084 |
|
} |
| 1085 |
|
else // if (page_id >= p_section->page_count - 1) |
| 1086 |
|
{ |
| 1087 |
|
return MIN(MAX(0, |
| 1088 |
|
(p_section->last_page_visible_article_count + p_section->ontop_article_count - |
| 1089 |
|
BBS_article_limit_per_page * (page_id - p_section->page_count + 1))), |
| 1090 |
|
BBS_article_limit_per_page); |
| 1091 |
|
} |
| 1092 |
|
} |
| 1093 |
|
|
| 1094 |
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) |
| 1095 |
{ |
{ |
| 1096 |
ARTICLE *p_article; |
ARTICLE *p_article; |
| 1104 |
|
|
| 1105 |
if (p_section == NULL) |
if (p_section == NULL) |
| 1106 |
{ |
{ |
| 1107 |
log_error("section_list_find_article_with_offset() NULL pointer error\n"); |
log_error("NULL pointer error\n"); |
| 1108 |
return NULL; |
return NULL; |
| 1109 |
} |
} |
| 1110 |
|
|
| 1116 |
} |
} |
| 1117 |
|
|
| 1118 |
left = 0; |
left = 0; |
| 1119 |
right = p_section->page_count; |
right = p_section->page_count - 1; |
| 1120 |
|
|
| 1121 |
// aid in the range [ head aid of pages[left], tail aid of pages[right - 1] ] |
// aid in the range [ head aid of pages[left], tail aid of pages[right] ] |
| 1122 |
while (left < right - 1) |
while (left < right) |
| 1123 |
{ |
{ |
| 1124 |
// get page id no less than mid value of left page id and right page id |
// get page id no less than mid value of left page id and right page id |
| 1125 |
mid = (left + right) / 2 + (right - left) % 2; |
mid = (left + right) / 2 + (left + right) % 2; |
|
|
|
|
if (mid >= p_section->page_count) |
|
|
{ |
|
|
log_error("page id (mid = %d) is out of boundary\n", mid); |
|
|
return NULL; |
|
|
} |
|
| 1126 |
|
|
| 1127 |
if (aid < p_section->p_page_first_article[mid]->aid) |
if (aid < p_section->p_page_first_article[mid]->aid) |
| 1128 |
{ |
{ |
| 1129 |
right = mid; |
right = mid - 1; |
| 1130 |
} |
} |
| 1131 |
else |
else // if (aid < p_section->p_page_first_article[mid]->aid) |
| 1132 |
{ |
{ |
| 1133 |
left = mid; |
left = mid; |
| 1134 |
} |
} |
| 1190 |
|
|
| 1191 |
if (p_section == NULL) |
if (p_section == NULL) |
| 1192 |
{ |
{ |
| 1193 |
log_error("section_list_calculate_page() NULL pointer error\n"); |
log_error("NULL pointer error\n"); |
| 1194 |
return -1; |
return -1; |
| 1195 |
} |
} |
| 1196 |
|
|
| 1292 |
return last_aid; |
return last_aid; |
| 1293 |
} |
} |
| 1294 |
|
|
| 1295 |
|
int article_block_article_count(void) |
| 1296 |
|
{ |
| 1297 |
|
int ret; |
| 1298 |
|
|
| 1299 |
|
if (p_article_block_pool == NULL || p_article_block_pool->block_count <= 0) |
| 1300 |
|
{ |
| 1301 |
|
return -1; |
| 1302 |
|
} |
| 1303 |
|
|
| 1304 |
|
ret = (p_article_block_pool->block_count - 1) * ARTICLE_PER_BLOCK + |
| 1305 |
|
p_article_block_pool->p_block[p_article_block_pool->block_count - 1]->article_count; |
| 1306 |
|
|
| 1307 |
|
return ret; |
| 1308 |
|
} |
| 1309 |
|
|
| 1310 |
int article_count_of_topic(int32_t aid) |
int article_count_of_topic(int32_t aid) |
| 1311 |
{ |
{ |
| 1312 |
ARTICLE *p_article; |
ARTICLE *p_article; |
| 1347 |
int32_t first_inserted_aid_dest; |
int32_t first_inserted_aid_dest; |
| 1348 |
int move_counter; |
int move_counter; |
| 1349 |
|
|
| 1350 |
if (p_section_dest == NULL) |
if (p_section_src == NULL || p_section_dest == NULL) |
| 1351 |
{ |
{ |
| 1352 |
log_error("section_list_move_topic() NULL pointer error\n"); |
log_error("NULL pointer error\n"); |
| 1353 |
|
return -1; |
| 1354 |
|
} |
| 1355 |
|
|
| 1356 |
|
if (p_section_src->sid == p_section_dest->sid) |
| 1357 |
|
{ |
| 1358 |
|
log_error("section_list_move_topic() src and dest section are the same\n"); |
| 1359 |
return -1; |
return -1; |
| 1360 |
} |
} |
| 1361 |
|
|
| 1362 |
if ((p_article = article_block_find_by_aid(aid)) == NULL) |
if ((p_article = article_block_find_by_aid(aid)) == NULL) |
| 1363 |
{ |
{ |
| 1364 |
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); |
| 1365 |
return -2; |
return -2; |
| 1366 |
} |
} |
| 1367 |
|
|
| 1402 |
{ |
{ |
| 1403 |
if (p_section_src->sid != p_article->sid) |
if (p_section_src->sid != p_article->sid) |
| 1404 |
{ |
{ |
| 1405 |
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", |
| 1406 |
p_section_src->sid, p_article->aid, p_article->sid); |
p_section_src->sid, p_article->aid, p_article->sid); |
| 1407 |
return -2; |
p_article = p_article->p_topic_next; |
| 1408 |
|
continue; |
| 1409 |
} |
} |
| 1410 |
|
|
| 1411 |
// Remove from bi-directional article list of src section |
// Remove from bi-directional article list of src section |
| 1431 |
|
|
| 1432 |
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) |
| 1433 |
{ |
{ |
| 1434 |
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); |
| 1435 |
return -4; |
p_article = p_article->p_topic_next; |
| 1436 |
|
continue; |
| 1437 |
} |
} |
| 1438 |
|
|
| 1439 |
// Insert into bi-directional article list of dest section |
// Insert into bi-directional article list of dest section |
| 1511 |
|
|
| 1512 |
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) |
| 1513 |
{ |
{ |
| 1514 |
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", |
| 1515 |
p_section_dest->article_count - dest_article_count_old, move_article_count); |
p_section_dest->article_count - dest_article_count_old, move_article_count); |
| 1516 |
} |
} |
| 1517 |
|
|
| 1562 |
return index; |
return index; |
| 1563 |
} |
} |
| 1564 |
|
|
| 1565 |
|
int get_section_info(SECTION_LIST *p_section, char *sname, char *stitle, char *master_list) |
| 1566 |
|
{ |
| 1567 |
|
if (p_section == NULL) |
| 1568 |
|
{ |
| 1569 |
|
log_error("NULL pointer error\n"); |
| 1570 |
|
return -1; |
| 1571 |
|
} |
| 1572 |
|
|
| 1573 |
|
if (section_list_rd_lock(p_section) < 0) |
| 1574 |
|
{ |
| 1575 |
|
log_error("section_list_rd_lock(sid=%d) error\n", p_section->sid); |
| 1576 |
|
return -2; |
| 1577 |
|
} |
| 1578 |
|
|
| 1579 |
|
if (sname != NULL) |
| 1580 |
|
{ |
| 1581 |
|
memcpy(sname, p_section->sname, sizeof(p_section->sname)); |
| 1582 |
|
} |
| 1583 |
|
if (stitle != NULL) |
| 1584 |
|
{ |
| 1585 |
|
memcpy(stitle, p_section->stitle, sizeof(p_section->stitle)); |
| 1586 |
|
} |
| 1587 |
|
if (master_list != NULL) |
| 1588 |
|
{ |
| 1589 |
|
memcpy(master_list, p_section->master_list, sizeof(p_section->master_list)); |
| 1590 |
|
} |
| 1591 |
|
|
| 1592 |
|
// release lock of section |
| 1593 |
|
if (section_list_rd_unlock(p_section) < 0) |
| 1594 |
|
{ |
| 1595 |
|
log_error("section_list_rd_unlock(sid=%d) error\n", p_section->sid); |
| 1596 |
|
return -2; |
| 1597 |
|
} |
| 1598 |
|
|
| 1599 |
|
return 0; |
| 1600 |
|
} |
| 1601 |
|
|
| 1602 |
int section_list_try_rd_lock(SECTION_LIST *p_section, int wait_sec) |
int section_list_try_rd_lock(SECTION_LIST *p_section, int wait_sec) |
| 1603 |
{ |
{ |
| 1604 |
int index; |
int index; |
| 1758 |
timer++; |
timer++; |
| 1759 |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
| 1760 |
{ |
{ |
| 1761 |
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", timer, sid); |
| 1762 |
} |
} |
| 1763 |
} |
} |
| 1764 |
else // failed |
else // failed |
| 1765 |
{ |
{ |
| 1766 |
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); |
| 1767 |
break; |
break; |
| 1768 |
} |
} |
| 1769 |
} |
} |
| 1789 |
timer++; |
timer++; |
| 1790 |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
| 1791 |
{ |
{ |
| 1792 |
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", timer, sid); |
| 1793 |
} |
} |
| 1794 |
} |
} |
| 1795 |
else // failed |
else // failed |
| 1796 |
{ |
{ |
| 1797 |
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); |
| 1798 |
break; |
break; |
| 1799 |
} |
} |
| 1800 |
} |
} |