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/*************************************************************************** |
/* SPDX-License-Identifier: GPL-3.0-or-later */ |
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section_list.c - description |
/* |
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------------------- |
* section_list |
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Copyright : (C) 2004-2025 by Leaflet |
* - data models and basic operations of section and article |
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Email : leaflet@leafok.com |
* |
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***************************************************************************/ |
* Copyright (C) 2004-2026 Leaflet <leaflet@leafok.com> |
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*/ |
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/*************************************************************************** |
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* * |
#ifdef HAVE_CONFIG_H |
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* This program is free software; you can redistribute it and/or modify * |
#include "config.h" |
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* it under the terms of the GNU General Public License as published by * |
#endif |
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* the Free Software Foundation; either version 3 of the License, or * |
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* (at your option) any later version. * |
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* * |
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***************************************************************************/ |
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#define _GNU_SOURCE |
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#include "section_list.h" |
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#include "log.h" |
#include "log.h" |
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#include "section_list.h" |
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#include "trie_dict.h" |
#include "trie_dict.h" |
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#include "user_list.h" |
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#include <errno.h> |
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#include <fcntl.h> |
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#include <signal.h> |
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#include <stdio.h> |
#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
#include <string.h> |
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#include <signal.h> |
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#include <unistd.h> |
#include <unistd.h> |
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#include <stdlib.h> |
#include <sys/mman.h> |
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#include <errno.h> |
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#include <sys/param.h> |
#include <sys/param.h> |
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#include <sys/sem.h> |
#include <sys/sem.h> |
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#include <sys/shm.h> |
#include <sys/stat.h> |
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#include <sys/ipc.h> |
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#ifdef _SEM_SEMUN_UNDEFINED |
#if defined(_SEM_SEMUN_UNDEFINED) || defined(__CYGWIN__) |
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union semun |
union semun |
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{ |
{ |
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int val; /* Value for SETVAL */ |
int val; /* Value for SETVAL */ |
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struct seminfo *__buf; /* Buffer for IPC_INFO |
struct seminfo *__buf; /* Buffer for IPC_INFO |
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(Linux-specific) */ |
(Linux-specific) */ |
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}; |
}; |
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#endif // #ifdef _SEM_SEMUN_UNDEFINED |
#endif // #if defined(_SEM_SEMUN_UNDEFINED) |
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#define SECTION_TRY_LOCK_WAIT_TIME 1 // second |
enum _section_list_constant_t |
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#define SECTION_TRY_LOCK_TIMES 10 |
{ |
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SECTION_TRY_LOCK_WAIT_TIME = 1, // second |
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SECTION_TRY_LOCK_TIMES = 10, |
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SECTION_DEAD_LOCK_TIMEOUT = 15, // second |
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#define ARTICLE_BLOCK_PER_SHM 400 // sizeof(ARTICLE_BLOCK) * ARTICLE_BLOCK_PER_SHM is the size of each shm segment to allocate |
ARTICLE_BLOCK_PER_SHM = 1000, // sizeof(ARTICLE_BLOCK) * ARTICLE_BLOCK_PER_SHM is the size of each shm segment to allocate |
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#define ARTICLE_BLOCK_SHM_COUNT_LIMIT 200 // limited by length (8-bit) of proj_id in ftok(path, proj_id) |
ARTICLE_BLOCK_SHM_COUNT_LIMIT = 80, // limited by length (8-bit) of proj_id in ftok(path, proj_id) |
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#define ARTICLE_BLOCK_PER_POOL (ARTICLE_BLOCK_PER_SHM * ARTICLE_BLOCK_SHM_COUNT_LIMIT) |
ARTICLE_BLOCK_PER_POOL = (ARTICLE_BLOCK_PER_SHM * ARTICLE_BLOCK_SHM_COUNT_LIMIT), |
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#define CALCULATE_PAGE_THRESHOLD 100 // Adjust to tune performance of move topic |
CALCULATE_PAGE_THRESHOLD = 100, // Adjust to tune performance of moving topic between sections |
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#define SID_STR_LEN 5 // 32-bit + NULL |
SID_STR_LEN = 5, // 32-bit + NULL |
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}; |
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struct article_block_t |
struct article_block_t |
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{ |
{ |
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ARTICLE articles[ARTICLE_PER_BLOCK]; |
ARTICLE articles[BBS_article_count_per_block]; |
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int article_count; |
int article_count; |
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struct article_block_t *p_next_block; |
struct article_block_t *p_next_block; |
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}; |
}; |
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struct article_block_pool_t |
struct article_block_pool_t |
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{ |
{ |
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int shmid; |
size_t shm_size; |
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struct |
struct |
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{ |
{ |
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int shmid; |
size_t shm_size; |
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void *p_shm; |
void *p_shm; |
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} shm_pool[ARTICLE_BLOCK_SHM_COUNT_LIMIT]; |
} shm_pool[ARTICLE_BLOCK_SHM_COUNT_LIMIT]; |
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int shm_count; |
int shm_count; |
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}; |
}; |
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typedef struct article_block_pool_t ARTICLE_BLOCK_POOL; |
typedef struct article_block_pool_t ARTICLE_BLOCK_POOL; |
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static char article_block_shm_name[FILE_NAME_LEN]; |
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static ARTICLE_BLOCK_POOL *p_article_block_pool = NULL; |
static ARTICLE_BLOCK_POOL *p_article_block_pool = NULL; |
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struct section_list_pool_t |
static char section_list_shm_name[FILE_NAME_LEN]; |
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{ |
SECTION_LIST_POOL *p_section_list_pool = NULL; |
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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; |
#ifndef HAVE_SYSTEM_V |
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static int section_list_reset_lock(SECTION_LIST *p_section); |
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#endif |
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int article_block_init(const char *filename, int block_count) |
int article_block_init(const char *filename, int block_count) |
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{ |
{ |
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int shmid; |
char filepath[FILE_PATH_LEN]; |
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int proj_id; |
int fd; |
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key_t key; |
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size_t size; |
size_t size; |
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void *p_shm; |
void *p_shm; |
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int i; |
int i; |
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if (p_article_block_pool != NULL) |
if (p_article_block_pool != NULL) |
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{ |
{ |
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log_error("article_block_pool already initialized\n"); |
log_error("article_block_pool already initialized"); |
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return -1; |
return -1; |
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} |
} |
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if (block_count <= 0 || block_count > ARTICLE_BLOCK_PER_POOL) |
if (block_count <= 0 || block_count > ARTICLE_BLOCK_PER_POOL) |
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{ |
{ |
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log_error("article_block_count exceed limit %d\n", ARTICLE_BLOCK_PER_POOL); |
log_error("article_block_count exceed limit %d", ARTICLE_BLOCK_PER_POOL); |
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return -2; |
return -2; |
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} |
} |
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strncpy(filepath, filename, sizeof(filepath) - 1); |
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filepath[sizeof(filepath) - 1] = '\0'; |
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snprintf(article_block_shm_name, sizeof(article_block_shm_name), "/ARTICLE_BLOCK_SHM_%s", basename(filepath)); |
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// Allocate shared memory |
// Allocate shared memory |
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proj_id = ARTICLE_BLOCK_SHM_COUNT_LIMIT; // keep different from proj_id used to create block shm |
size = sizeof(ARTICLE_BLOCK_POOL); |
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key = ftok(filename, proj_id); |
snprintf(filepath, sizeof(filepath), "%s_%d", article_block_shm_name, ARTICLE_BLOCK_SHM_COUNT_LIMIT); |
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if (key == -1) |
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if (shm_unlink(filepath) == -1 && errno != ENOENT) |
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{ |
{ |
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log_error("ftok(%s, %d) error (%d)\n", filename, proj_id, errno); |
log_error("shm_unlink(%s) error (%d)", filepath, errno); |
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return -3; |
return -2; |
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} |
} |
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size = sizeof(ARTICLE_BLOCK_POOL); |
if ((fd = shm_open(filepath, O_CREAT | O_EXCL | O_RDWR, 0600)) == -1) |
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shmid = shmget(key, size, IPC_CREAT | IPC_EXCL | 0600); |
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if (shmid == -1) |
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{ |
{ |
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log_error("shmget(article_block_pool_shm, size = %d) error (%d)\n", size, errno); |
log_error("shm_open(%s) error (%d)", filepath, errno); |
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return -3; |
return -2; |
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} |
} |
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p_shm = shmat(shmid, NULL, 0); |
if (ftruncate(fd, (off_t)size) == -1) |
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if (p_shm == (void *)-1) |
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{ |
{ |
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log_error("shmat(shmid = %d) error (%d)\n", shmid, errno); |
log_error("ftruncate(size=%d) error (%d)", size, errno); |
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return -3; |
close(fd); |
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return -2; |
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} |
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p_shm = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0L); |
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if (p_shm == MAP_FAILED) |
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{ |
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log_error("mmap() error (%d)", errno); |
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close(fd); |
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return -2; |
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} |
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if (close(fd) < 0) |
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{ |
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log_error("close(fd) error (%d)", errno); |
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return -1; |
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} |
} |
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p_article_block_pool = p_shm; |
p_article_block_pool = p_shm; |
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p_article_block_pool->shmid = shmid; |
p_article_block_pool->shm_size = size; |
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p_article_block_pool->shm_count = 0; |
p_article_block_pool->shm_count = 0; |
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pp_block_next = &(p_article_block_pool->p_block_free_list); |
pp_block_next = &(p_article_block_pool->p_block_free_list); |
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block_count_in_shm = MIN(block_count, ARTICLE_BLOCK_PER_SHM); |
block_count_in_shm = MIN(block_count, ARTICLE_BLOCK_PER_SHM); |
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block_count -= block_count_in_shm; |
block_count -= block_count_in_shm; |
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proj_id = p_article_block_pool->shm_count; |
size = sizeof(ARTICLE_BLOCK) * (size_t)block_count_in_shm; |
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key = ftok(filename, proj_id); |
snprintf(filepath, sizeof(filepath), "%s_%d", article_block_shm_name, p_article_block_pool->shm_count); |
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if (key == -1) |
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if (shm_unlink(filepath) == -1 && errno != ENOENT) |
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{ |
{ |
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log_error("ftok(%s, %d) error (%d)\n", filename, proj_id, errno); |
log_error("shm_unlink(%s) error (%d)", filepath, errno); |
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article_block_cleanup(); |
return -2; |
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return -3; |
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} |
} |
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size = sizeof(ARTICLE_BLOCK) * (size_t)block_count_in_shm; |
if ((fd = shm_open(filepath, O_CREAT | O_EXCL | O_RDWR, 0600)) == -1) |
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shmid = shmget(key, size, IPC_CREAT | IPC_EXCL | 0600); |
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if (shmid == -1) |
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{ |
{ |
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log_error("shmget(shm_index = %d, size = %d) error (%d)\n", p_article_block_pool->shm_count, size, errno); |
log_error("shm_open(%s) error (%d)", filepath, errno); |
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article_block_cleanup(); |
return -2; |
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return -3; |
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} |
} |
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p_shm = shmat(shmid, NULL, 0); |
if (ftruncate(fd, (off_t)size) == -1) |
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if (p_shm == (void *)-1) |
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{ |
{ |
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log_error("shmat(shmid = %d) error (%d)\n", shmid, errno); |
log_error("ftruncate(size=%d) error (%d)", size, errno); |
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article_block_cleanup(); |
close(fd); |
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return -3; |
return -2; |
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} |
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p_shm = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0L); |
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if (p_shm == MAP_FAILED) |
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{ |
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log_error("mmap() error (%d)", errno); |
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close(fd); |
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return -2; |
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} |
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if (close(fd) < 0) |
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{ |
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log_error("close(fd) error (%d)", errno); |
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return -1; |
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} |
} |
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(p_article_block_pool->shm_pool + p_article_block_pool->shm_count)->shmid = shmid; |
(p_article_block_pool->shm_pool + p_article_block_pool->shm_count)->shm_size = size; |
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(p_article_block_pool->shm_pool + p_article_block_pool->shm_count)->p_shm = p_shm; |
(p_article_block_pool->shm_pool + p_article_block_pool->shm_count)->p_shm = p_shm; |
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p_article_block_pool->shm_count++; |
p_article_block_pool->shm_count++; |
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void article_block_cleanup(void) |
void article_block_cleanup(void) |
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{ |
{ |
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int shmid; |
char filepath[FILE_PATH_LEN]; |
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if (p_article_block_pool == NULL) |
if (p_article_block_pool == NULL) |
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{ |
{ |
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for (int i = 0; i < p_article_block_pool->shm_count; i++) |
for (int i = 0; i < p_article_block_pool->shm_count; i++) |
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{ |
{ |
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if (shmdt((p_article_block_pool->shm_pool + i)->p_shm) == -1) |
snprintf(filepath, sizeof(filepath), "%s_%d", article_block_shm_name, i); |
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{ |
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log_error("shmdt(shmid = %d) error (%d)\n", (p_article_block_pool->shm_pool + i)->shmid, errno); |
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} |
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if (shmctl((p_article_block_pool->shm_pool + i)->shmid, IPC_RMID, NULL) == -1) |
if (shm_unlink(filepath) == -1 && errno != ENOENT) |
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{ |
{ |
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log_error("shmctl(shmid = %d, IPC_RMID) error (%d)\n", (p_article_block_pool->shm_pool + i)->shmid, errno); |
log_error("shm_unlink(%s) error (%d)", filepath, errno); |
| 239 |
} |
} |
| 240 |
} |
} |
| 241 |
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shmid = p_article_block_pool->shmid; |
snprintf(filepath, sizeof(filepath), "%s_%d", article_block_shm_name, ARTICLE_BLOCK_SHM_COUNT_LIMIT); |
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if (shmdt(p_article_block_pool) == -1) |
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{ |
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log_error("shmdt(shmid = %d) error (%d)\n", shmid, errno); |
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} |
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if (shmctl(shmid, IPC_RMID, NULL) == -1) |
if (shm_unlink(filepath) == -1 && errno != ENOENT) |
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{ |
{ |
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log_error("shmctl(shmid = %d, IPC_RMID) error (%d)\n", shmid, errno); |
log_error("shm_unlink(%s) error (%d)", filepath, errno); |
| 247 |
} |
} |
| 248 |
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| 249 |
p_article_block_pool = NULL; |
detach_article_block_shm(); |
| 250 |
} |
} |
| 251 |
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| 252 |
int set_article_block_shm_readonly(void) |
int set_article_block_shm_readonly(void) |
| 253 |
{ |
{ |
| 254 |
int shmid; |
// int i; |
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void *p_shm; |
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int i; |
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| 255 |
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| 256 |
if (p_article_block_pool == NULL) |
if (p_article_block_pool == NULL) |
| 257 |
{ |
{ |
| 258 |
log_error("article_block_pool not initialized\n"); |
log_error("article_block_pool not initialized"); |
| 259 |
return -1; |
return -1; |
| 260 |
} |
} |
| 261 |
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| 262 |
for (i = 0; i < p_article_block_pool->shm_count; i++) |
// for (i = 0; i < p_article_block_pool->shm_count; i++) |
| 263 |
{ |
// { |
| 264 |
shmid = (p_article_block_pool->shm_pool + i)->shmid; |
// if ((p_article_block_pool->shm_pool + i)->p_shm != NULL && |
| 265 |
|
// mprotect((p_article_block_pool->shm_pool + i)->p_shm, (p_article_block_pool->shm_pool + i)->shm_size, PROT_READ) < 0) |
| 266 |
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// { |
| 267 |
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// log_error("mprotect() error (%d)", errno); |
| 268 |
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// return -2; |
| 269 |
|
// } |
| 270 |
|
// } |
| 271 |
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| 272 |
// Remap shared memory in read-only mode |
if (p_article_block_pool != NULL && |
| 273 |
p_shm = shmat(shmid, (p_article_block_pool->shm_pool + i)->p_shm, SHM_RDONLY | SHM_REMAP); |
mprotect(p_article_block_pool, p_article_block_pool->shm_size, PROT_READ) < 0) |
| 274 |
if (p_shm == (void *)-1) |
{ |
| 275 |
{ |
log_error("mprotect() error (%d)", errno); |
| 276 |
log_error("shmat(article_block_pool shmid = %d) error (%d)\n", shmid, errno); |
return -3; |
|
return -2; |
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} |
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| 277 |
} |
} |
| 278 |
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| 279 |
return 0; |
return 0; |
| 281 |
|
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| 282 |
int detach_article_block_shm(void) |
int detach_article_block_shm(void) |
| 283 |
{ |
{ |
| 284 |
int shmid; |
int shm_count; |
| 285 |
|
size_t pool_shm_size; |
| 286 |
|
|
| 287 |
if (p_article_block_pool == NULL) |
if (p_article_block_pool == NULL) |
| 288 |
{ |
{ |
| 289 |
return -1; |
return -1; |
| 290 |
} |
} |
| 291 |
|
|
| 292 |
for (int i = 0; i < p_article_block_pool->shm_count; i++) |
shm_count = p_article_block_pool->shm_count; |
| 293 |
|
pool_shm_size = p_article_block_pool->shm_size; |
| 294 |
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|
| 295 |
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for (int i = 0; i < shm_count; i++) |
| 296 |
{ |
{ |
| 297 |
if ((p_article_block_pool->shm_pool + i)->p_shm != NULL && shmdt((p_article_block_pool->shm_pool + i)->p_shm) == -1) |
if ((p_article_block_pool->shm_pool + i)->p_shm != NULL && |
| 298 |
|
munmap((p_article_block_pool->shm_pool + i)->p_shm, (p_article_block_pool->shm_pool + i)->shm_size) < 0) |
| 299 |
{ |
{ |
| 300 |
log_error("shmdt(shmid = %d) error (%d)\n", (p_article_block_pool->shm_pool + i)->shmid, errno); |
log_error("munmap() error (%d)", errno); |
| 301 |
return -2; |
return -2; |
| 302 |
} |
} |
| 303 |
} |
} |
| 304 |
|
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| 305 |
shmid = p_article_block_pool->shmid; |
if (p_article_block_pool != NULL && munmap(p_article_block_pool, pool_shm_size) < 0) |
|
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if (shmdt(p_article_block_pool) == -1) |
|
| 306 |
{ |
{ |
| 307 |
log_error("shmdt(shmid = %d) error (%d)\n", shmid, errno); |
log_error("munmap() error (%d)", errno); |
| 308 |
return -3; |
return -3; |
| 309 |
} |
} |
| 310 |
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| 340 |
|
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| 341 |
if (p_article_block_pool == NULL) |
if (p_article_block_pool == NULL) |
| 342 |
{ |
{ |
| 343 |
log_error("article_block_pool not initialized\n"); |
log_error("article_block_pool not initialized"); |
| 344 |
return -1; |
return -1; |
| 345 |
} |
} |
| 346 |
|
|
| 363 |
|
|
| 364 |
if (p_article_block_pool == NULL) |
if (p_article_block_pool == NULL) |
| 365 |
{ |
{ |
| 366 |
log_error("article_block_pool not initialized\n"); |
log_error("article_block_pool not initialized"); |
| 367 |
return NULL; |
return NULL; |
| 368 |
} |
} |
| 369 |
|
|
| 373 |
} |
} |
| 374 |
|
|
| 375 |
left = 0; |
left = 0; |
| 376 |
right = p_article_block_pool->block_count; |
right = p_article_block_pool->block_count - 1; |
| 377 |
|
|
| 378 |
// 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] ] |
| 379 |
while (left < right - 1) |
while (left < right) |
| 380 |
{ |
{ |
| 381 |
// 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 |
| 382 |
mid = (left + right) / 2 + (right - left) % 2; |
mid = left + (right - left + 1) / 2; |
|
|
|
|
if (mid >= p_article_block_pool->block_count) |
|
|
{ |
|
|
log_error("block(mid = %d) is out of boundary\n", mid); |
|
|
return NULL; |
|
|
} |
|
| 383 |
|
|
| 384 |
if (aid < p_article_block_pool->p_block[mid]->articles[0].aid) |
if (aid < p_article_block_pool->p_block[mid]->articles[0].aid) |
| 385 |
{ |
{ |
| 386 |
right = mid; |
right = mid - 1; |
| 387 |
} |
} |
| 388 |
else |
else // if (aid >= p_article_block_pool->p_block[mid]->articles[0].aid) |
| 389 |
{ |
{ |
| 390 |
left = mid; |
left = mid; |
| 391 |
} |
} |
| 399 |
// aid in the range [ aid of articles[left], aid of articles[right] ] |
// aid in the range [ aid of articles[left], aid of articles[right] ] |
| 400 |
while (left < right) |
while (left < right) |
| 401 |
{ |
{ |
| 402 |
mid = (left + right) / 2; |
mid = left + (right - left) / 2; |
| 403 |
|
|
| 404 |
if (aid <= p_block->articles[mid].aid) |
if (aid <= p_block->articles[mid].aid) |
| 405 |
{ |
{ |
| 425 |
|
|
| 426 |
if (p_article_block_pool == NULL) |
if (p_article_block_pool == NULL) |
| 427 |
{ |
{ |
| 428 |
log_error("article_block_pool not initialized\n"); |
log_error("article_block_pool not initialized"); |
| 429 |
return NULL; |
return NULL; |
| 430 |
} |
} |
| 431 |
|
|
| 432 |
if (index < 0 || index / ARTICLE_PER_BLOCK >= p_article_block_pool->block_count) |
if (index < 0 || index / BBS_article_count_per_block >= p_article_block_pool->block_count) |
| 433 |
{ |
{ |
| 434 |
log_error("article_block_find_by_index(%d) is out of boundary of block [0, %d)\n", index, p_article_block_pool->block_count); |
log_error("article_block_find_by_index(%d) is out of boundary of block [0, %d)", index, p_article_block_pool->block_count); |
| 435 |
return NULL; |
return NULL; |
| 436 |
} |
} |
| 437 |
|
|
| 438 |
p_block = p_article_block_pool->p_block[index / ARTICLE_PER_BLOCK]; |
p_block = p_article_block_pool->p_block[index / BBS_article_count_per_block]; |
| 439 |
|
|
| 440 |
if (index % ARTICLE_PER_BLOCK >= p_block->article_count) |
if (index % BBS_article_count_per_block >= p_block->article_count) |
| 441 |
{ |
{ |
| 442 |
log_error("article_block_find_by_index(%d) is out of boundary of article [0, %d)\n", index, p_block->article_count); |
log_error("article_block_find_by_index(%d) is out of boundary of article [0, %d)", index, p_block->article_count); |
| 443 |
return NULL; |
return NULL; |
| 444 |
} |
} |
| 445 |
|
|
| 446 |
return (p_block->articles + (index % ARTICLE_PER_BLOCK)); |
return (p_block->articles + (index % BBS_article_count_per_block)); |
| 447 |
} |
} |
| 448 |
|
|
| 449 |
extern int section_list_init(const char *filename) |
extern int section_list_init(const char *filename) |
| 450 |
{ |
{ |
| 451 |
int semid; |
char filepath[FILE_PATH_LEN]; |
| 452 |
int shmid; |
int fd; |
|
int proj_id; |
|
|
key_t key; |
|
| 453 |
size_t size; |
size_t size; |
| 454 |
void *p_shm; |
void *p_shm; |
| 455 |
|
#ifdef HAVE_SYSTEM_V |
| 456 |
|
int proj_id; |
| 457 |
|
key_t key; |
| 458 |
|
int semid; |
| 459 |
union semun arg; |
union semun arg; |
| 460 |
|
#endif |
| 461 |
int i; |
int i; |
| 462 |
|
|
| 463 |
if (p_section_list_pool != NULL) |
if (p_section_list_pool != NULL) |
| 465 |
section_list_cleanup(); |
section_list_cleanup(); |
| 466 |
} |
} |
| 467 |
|
|
| 468 |
proj_id = (int)(time(NULL) % getpid()); |
// Allocate shared memory |
| 469 |
key = ftok(filename, proj_id); |
size = sizeof(SECTION_LIST_POOL); |
| 470 |
if (key == -1) |
|
| 471 |
|
strncpy(filepath, filename, sizeof(filepath) - 1); |
| 472 |
|
filepath[sizeof(filepath) - 1] = '\0'; |
| 473 |
|
snprintf(section_list_shm_name, sizeof(section_list_shm_name), "/SECTION_LIST_SHM_%s", basename(filepath)); |
| 474 |
|
|
| 475 |
|
if (shm_unlink(section_list_shm_name) == -1 && errno != ENOENT) |
| 476 |
{ |
{ |
| 477 |
log_error("ftok(%s, %d) error (%d)\n", filename, proj_id, errno); |
log_error("shm_unlink(%s) error (%d)", section_list_shm_name, errno); |
| 478 |
return -3; |
return -2; |
| 479 |
} |
} |
| 480 |
|
|
| 481 |
// Allocate shared memory |
if ((fd = shm_open(section_list_shm_name, O_CREAT | O_EXCL | O_RDWR, 0600)) == -1) |
|
size = sizeof(SECTION_LIST_POOL); |
|
|
shmid = shmget(key, size, IPC_CREAT | IPC_EXCL | 0600); |
|
|
if (shmid == -1) |
|
| 482 |
{ |
{ |
| 483 |
log_error("shmget(section_list_pool_shm, size = %d) error (%d)\n", size, errno); |
log_error("shm_open(%s) error (%d)", section_list_shm_name, errno); |
| 484 |
return -3; |
return -2; |
| 485 |
} |
} |
| 486 |
p_shm = shmat(shmid, NULL, 0); |
if (ftruncate(fd, (off_t)size) == -1) |
|
if (p_shm == (void *)-1) |
|
| 487 |
{ |
{ |
| 488 |
log_error("shmat(shmid = %d) error (%d)\n", shmid, errno); |
log_error("ftruncate(size=%d) error (%d)", size, errno); |
| 489 |
return -3; |
close(fd); |
| 490 |
|
return -2; |
| 491 |
|
} |
| 492 |
|
|
| 493 |
|
p_shm = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0L); |
| 494 |
|
if (p_shm == MAP_FAILED) |
| 495 |
|
{ |
| 496 |
|
log_error("mmap() error (%d)", errno); |
| 497 |
|
close(fd); |
| 498 |
|
return -2; |
| 499 |
|
} |
| 500 |
|
|
| 501 |
|
if (close(fd) < 0) |
| 502 |
|
{ |
| 503 |
|
log_error("close(fd) error (%d)", errno); |
| 504 |
|
return -1; |
| 505 |
} |
} |
| 506 |
|
|
| 507 |
p_section_list_pool = p_shm; |
p_section_list_pool = p_shm; |
| 508 |
p_section_list_pool->shmid = shmid; |
p_section_list_pool->shm_size = size; |
| 509 |
p_section_list_pool->section_count = 0; |
p_section_list_pool->section_count = 0; |
| 510 |
|
|
| 511 |
// Allocate semaphore as section locks |
// Allocate semaphore as section locks |
| 512 |
|
#ifndef HAVE_SYSTEM_V |
| 513 |
|
for (i = 0; i <= BBS_max_section; i++) |
| 514 |
|
{ |
| 515 |
|
if (sem_init(&(p_section_list_pool->sem[i]), 1, 1) == -1) |
| 516 |
|
{ |
| 517 |
|
log_error("sem_init(sem[%d]) error (%d)", i, errno); |
| 518 |
|
return -3; |
| 519 |
|
} |
| 520 |
|
|
| 521 |
|
p_section_list_pool->read_lock_count[i] = 0; |
| 522 |
|
p_section_list_pool->write_lock_count[i] = 0; |
| 523 |
|
} |
| 524 |
|
#else |
| 525 |
|
proj_id = (int)(time(NULL) % getpid()); |
| 526 |
|
key = ftok(filename, proj_id); |
| 527 |
|
if (key == -1) |
| 528 |
|
{ |
| 529 |
|
log_error("ftok(%s, %d) error (%d)", filename, proj_id, errno); |
| 530 |
|
return -3; |
| 531 |
|
} |
| 532 |
|
|
| 533 |
size = 2 * (BBS_max_section + 1); // r_sem and w_sem per section, the last pair for all sections |
size = 2 * (BBS_max_section + 1); // r_sem and w_sem per section, the last pair for all sections |
| 534 |
semid = semget(key, (int)size, IPC_CREAT | IPC_EXCL | 0600); |
semid = semget(key, (int)size, IPC_CREAT | IPC_EXCL | 0600); |
| 535 |
if (semid == -1) |
if (semid == -1) |
| 536 |
{ |
{ |
| 537 |
log_error("semget(section_list_pool_sem, size = %d) error (%d)\n", size, errno); |
log_error("semget(section_list_pool_sem, size = %d) error (%d)", size, errno); |
| 538 |
return -3; |
return -3; |
| 539 |
} |
} |
| 540 |
|
|
| 544 |
{ |
{ |
| 545 |
if (semctl(semid, i, SETVAL, arg) == -1) |
if (semctl(semid, i, SETVAL, arg) == -1) |
| 546 |
{ |
{ |
| 547 |
log_error("semctl(section_list_pool_sem, SETVAL) error (%d)\n", errno); |
log_error("semctl(section_list_pool_sem, SETVAL) error (%d)", errno); |
| 548 |
return -3; |
return -3; |
| 549 |
} |
} |
| 550 |
} |
} |
| 551 |
|
|
| 552 |
p_section_list_pool->semid = semid; |
p_section_list_pool->semid = semid; |
| 553 |
|
#endif |
| 554 |
|
|
| 555 |
p_section_list_pool->p_trie_dict_section_by_name = trie_dict_create(); |
p_section_list_pool->p_trie_dict_section_by_name = trie_dict_create(); |
| 556 |
if (p_section_list_pool->p_trie_dict_section_by_name == NULL) |
if (p_section_list_pool->p_trie_dict_section_by_name == NULL) |
| 557 |
{ |
{ |
| 558 |
log_error("trie_dict_create() OOM\n", BBS_max_section); |
log_error("trie_dict_create() OOM", BBS_max_section); |
| 559 |
return -2; |
return -2; |
| 560 |
} |
} |
| 561 |
|
|
| 562 |
p_section_list_pool->p_trie_dict_section_by_sid = trie_dict_create(); |
p_section_list_pool->p_trie_dict_section_by_sid = trie_dict_create(); |
| 563 |
if (p_section_list_pool->p_trie_dict_section_by_sid == NULL) |
if (p_section_list_pool->p_trie_dict_section_by_sid == NULL) |
| 564 |
{ |
{ |
| 565 |
log_error("trie_dict_create() OOM\n", BBS_max_section); |
log_error("trie_dict_create() OOM", BBS_max_section); |
| 566 |
return -2; |
return -2; |
| 567 |
} |
} |
| 568 |
|
|
| 571 |
|
|
| 572 |
void section_list_cleanup(void) |
void section_list_cleanup(void) |
| 573 |
{ |
{ |
|
int shmid; |
|
|
|
|
| 574 |
if (p_section_list_pool == NULL) |
if (p_section_list_pool == NULL) |
| 575 |
{ |
{ |
| 576 |
return; |
return; |
| 588 |
p_section_list_pool->p_trie_dict_section_by_sid = NULL; |
p_section_list_pool->p_trie_dict_section_by_sid = NULL; |
| 589 |
} |
} |
| 590 |
|
|
| 591 |
shmid = p_section_list_pool->shmid; |
#ifdef HAVE_SYSTEM_V |
|
|
|
| 592 |
if (semctl(p_section_list_pool->semid, 0, IPC_RMID) == -1) |
if (semctl(p_section_list_pool->semid, 0, IPC_RMID) == -1) |
| 593 |
{ |
{ |
| 594 |
log_error("semctl(semid = %d, IPC_RMID) error (%d)\n", p_section_list_pool->semid, errno); |
log_error("semctl(semid = %d, IPC_RMID) error (%d)", p_section_list_pool->semid, errno); |
| 595 |
} |
} |
| 596 |
|
#else |
| 597 |
if (shmdt(p_section_list_pool) == -1) |
for (int i = 0; i <= BBS_max_section; i++) |
| 598 |
{ |
{ |
| 599 |
log_error("shmdt(shmid = %d) error (%d)\n", shmid, errno); |
if (sem_destroy(&(p_section_list_pool->sem[i])) == -1) |
| 600 |
|
{ |
| 601 |
|
log_error("sem_destroy(sem[%d]) error (%d)", i, errno); |
| 602 |
|
} |
| 603 |
} |
} |
| 604 |
|
#endif |
| 605 |
|
|
| 606 |
|
detach_section_list_shm(); |
| 607 |
|
|
| 608 |
if (shmctl(shmid, IPC_RMID, NULL) == -1) |
if (shm_unlink(section_list_shm_name) == -1 && errno != ENOENT) |
| 609 |
{ |
{ |
| 610 |
log_error("shmctl(shmid = %d, IPC_RMID) error (%d)\n", shmid, errno); |
log_error("shm_unlink(%s) error (%d)", section_list_shm_name, errno); |
| 611 |
} |
} |
|
|
|
|
p_section_list_pool = NULL; |
|
| 612 |
} |
} |
| 613 |
|
|
| 614 |
int set_section_list_shm_readonly(void) |
int set_section_list_shm_readonly(void) |
| 615 |
{ |
{ |
|
int shmid; |
|
|
void *p_shm; |
|
|
|
|
| 616 |
if (p_section_list_pool == NULL) |
if (p_section_list_pool == NULL) |
| 617 |
{ |
{ |
| 618 |
log_error("p_section_list_pool not initialized\n"); |
log_error("p_section_list_pool not initialized"); |
| 619 |
return -1; |
return -1; |
| 620 |
} |
} |
| 621 |
|
|
| 622 |
shmid = p_section_list_pool->shmid; |
if (p_section_list_pool != NULL && |
| 623 |
|
mprotect(p_section_list_pool, p_section_list_pool->shm_size, PROT_READ) < 0) |
|
// Remap shared memory in read-only mode |
|
|
p_shm = shmat(shmid, p_section_list_pool, SHM_RDONLY | SHM_REMAP); |
|
|
if (p_shm == (void *)-1) |
|
| 624 |
{ |
{ |
| 625 |
log_error("shmat(section_list_pool shmid = %d) error (%d)\n", shmid, errno); |
log_error("mprotect() error (%d)", errno); |
| 626 |
return -3; |
return -2; |
| 627 |
} |
} |
| 628 |
|
|
|
p_section_list_pool = p_shm; |
|
|
|
|
| 629 |
return 0; |
return 0; |
| 630 |
} |
} |
| 631 |
|
|
| 632 |
int detach_section_list_shm(void) |
int detach_section_list_shm(void) |
| 633 |
{ |
{ |
| 634 |
if (p_section_list_pool != NULL && shmdt(p_section_list_pool) == -1) |
if (p_section_list_pool != NULL && munmap(p_section_list_pool, p_section_list_pool->shm_size) < 0) |
| 635 |
{ |
{ |
| 636 |
log_error("shmdt(section_list_pool) error (%d)\n", errno); |
log_error("munmap() error (%d)", errno); |
| 637 |
return -1; |
return -1; |
| 638 |
} |
} |
| 639 |
|
|
| 656 |
p_sid_str[i] = '\0'; |
p_sid_str[i] = '\0'; |
| 657 |
} |
} |
| 658 |
|
|
| 659 |
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) |
| 660 |
{ |
{ |
| 661 |
SECTION_LIST *p_section; |
SECTION_LIST *p_section; |
| 662 |
char sid_str[SID_STR_LEN]; |
char sid_str[SID_STR_LEN]; |
| 663 |
|
|
| 664 |
if (p_section_list_pool == NULL) |
if (p_section_list_pool == NULL) |
| 665 |
{ |
{ |
| 666 |
log_error("session_list_pool not initialized\n"); |
log_error("session_list_pool not initialized"); |
| 667 |
return NULL; |
return NULL; |
| 668 |
} |
} |
| 669 |
|
|
| 670 |
if (p_section_list_pool->section_count >= BBS_max_section) |
if (p_section_list_pool->section_count >= BBS_max_section) |
| 671 |
{ |
{ |
| 672 |
log_error("section_count reach limit %d >= %d\n", p_section_list_pool->section_count, BBS_max_section); |
log_error("section_count reach limit %d >= %d", p_section_list_pool->section_count, BBS_max_section); |
| 673 |
return NULL; |
return NULL; |
| 674 |
} |
} |
| 675 |
|
|
| 678 |
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; |
| 679 |
|
|
| 680 |
p_section->sid = sid; |
p_section->sid = sid; |
| 681 |
|
p_section->ex_menu_tm = 0; |
| 682 |
|
|
| 683 |
strncpy(p_section->sname, sname, sizeof(p_section->sname - 1)); |
strncpy(p_section->sname, sname, sizeof(p_section->sname) - 1); |
| 684 |
p_section->sname[sizeof(p_section->sname - 1)] = '\0'; |
p_section->sname[sizeof(p_section->sname) - 1] = '\0'; |
| 685 |
|
|
| 686 |
strncpy(p_section->stitle, stitle, sizeof(p_section->stitle - 1)); |
strncpy(p_section->stitle, stitle, sizeof(p_section->stitle) - 1); |
| 687 |
p_section->stitle[sizeof(p_section->stitle - 1)] = '\0'; |
p_section->stitle[sizeof(p_section->stitle) - 1] = '\0'; |
| 688 |
|
|
| 689 |
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); |
| 690 |
p_section->master_name[sizeof(p_section->master_name - 1)] = '\0'; |
p_section->master_list[sizeof(p_section->master_list) - 1] = '\0'; |
| 691 |
|
|
| 692 |
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) |
| 693 |
{ |
{ |
| 694 |
log_error("trie_dict_set(section, %s, %d) error\n", sname, p_section_list_pool->section_count); |
log_error("trie_dict_set(section, %s, %d) error", sname, p_section_list_pool->section_count); |
| 695 |
return NULL; |
return NULL; |
| 696 |
} |
} |
| 697 |
|
|
| 698 |
if (trie_dict_set(p_section_list_pool->p_trie_dict_section_by_sid, sid_str, p_section_list_pool->section_count) != 1) |
if (trie_dict_set(p_section_list_pool->p_trie_dict_section_by_sid, sid_str, p_section_list_pool->section_count) != 1) |
| 699 |
{ |
{ |
| 700 |
log_error("trie_dict_set(section, %d, %d) error\n", sid, p_section_list_pool->section_count); |
log_error("trie_dict_set(section, %d, %d) error", sid, p_section_list_pool->section_count); |
| 701 |
return NULL; |
return NULL; |
| 702 |
} |
} |
| 703 |
|
|
| 708 |
return p_section; |
return p_section; |
| 709 |
} |
} |
| 710 |
|
|
| 711 |
|
int section_list_update(SECTION_LIST *p_section, const char *sname, const char *stitle, const char *master_list) |
| 712 |
|
{ |
| 713 |
|
int64_t index; |
| 714 |
|
|
| 715 |
|
if (p_section == NULL || sname == NULL || stitle == NULL || master_list == NULL) |
| 716 |
|
{ |
| 717 |
|
log_error("NULL pointer error"); |
| 718 |
|
return -1; |
| 719 |
|
} |
| 720 |
|
|
| 721 |
|
index = get_section_index(p_section); |
| 722 |
|
|
| 723 |
|
strncpy(p_section->sname, sname, sizeof(p_section->sname) - 1); |
| 724 |
|
p_section->sname[sizeof(p_section->sname) - 1] = '\0'; |
| 725 |
|
|
| 726 |
|
strncpy(p_section->stitle, stitle, sizeof(p_section->stitle) - 1); |
| 727 |
|
p_section->stitle[sizeof(p_section->stitle) - 1] = '\0'; |
| 728 |
|
|
| 729 |
|
strncpy(p_section->master_list, master_list, sizeof(p_section->master_list) - 1); |
| 730 |
|
p_section->master_list[sizeof(p_section->master_list) - 1] = '\0'; |
| 731 |
|
|
| 732 |
|
if (trie_dict_set(p_section_list_pool->p_trie_dict_section_by_name, sname, index) < 0) |
| 733 |
|
{ |
| 734 |
|
log_error("trie_dict_set(section, %s, %d) error", sname, index); |
| 735 |
|
return -2; |
| 736 |
|
} |
| 737 |
|
|
| 738 |
|
return 0; |
| 739 |
|
} |
| 740 |
|
|
| 741 |
void section_list_reset_articles(SECTION_LIST *p_section) |
void section_list_reset_articles(SECTION_LIST *p_section) |
| 742 |
{ |
{ |
| 743 |
p_section->article_count = 0; |
p_section->article_count = 0; |
| 749 |
|
|
| 750 |
p_section->page_count = 0; |
p_section->page_count = 0; |
| 751 |
p_section->last_page_visible_article_count = 0; |
p_section->last_page_visible_article_count = 0; |
| 752 |
|
|
| 753 |
|
p_section->ontop_article_count = 0; |
| 754 |
} |
} |
| 755 |
|
|
| 756 |
SECTION_LIST *section_list_find_by_name(const char *sname) |
SECTION_LIST *section_list_find_by_name(const char *sname) |
| 760 |
|
|
| 761 |
if (p_section_list_pool == NULL) |
if (p_section_list_pool == NULL) |
| 762 |
{ |
{ |
| 763 |
log_error("section_list not initialized\n"); |
log_error("section_list not initialized"); |
| 764 |
return NULL; |
return NULL; |
| 765 |
} |
} |
| 766 |
|
|
| 767 |
ret = trie_dict_get(p_section_list_pool->p_trie_dict_section_by_name, sname, &index); |
ret = trie_dict_get(p_section_list_pool->p_trie_dict_section_by_name, sname, &index); |
| 768 |
if (ret < 0) |
if (ret < 0) |
| 769 |
{ |
{ |
| 770 |
log_error("trie_dict_get(section, %s) error\n", sname); |
log_error("trie_dict_get(section, %s) error", sname); |
| 771 |
return NULL; |
return NULL; |
| 772 |
} |
} |
| 773 |
else if (ret == 0) |
else if (ret == 0) |
| 786 |
|
|
| 787 |
if (p_section_list_pool == NULL) |
if (p_section_list_pool == NULL) |
| 788 |
{ |
{ |
| 789 |
log_error("section_list not initialized\n"); |
log_error("section_list not initialized"); |
| 790 |
return NULL; |
return NULL; |
| 791 |
} |
} |
| 792 |
|
|
| 795 |
ret = trie_dict_get(p_section_list_pool->p_trie_dict_section_by_sid, sid_str, &index); |
ret = trie_dict_get(p_section_list_pool->p_trie_dict_section_by_sid, sid_str, &index); |
| 796 |
if (ret < 0) |
if (ret < 0) |
| 797 |
{ |
{ |
| 798 |
log_error("trie_dict_get(section, %d) error\n", sid); |
log_error("trie_dict_get(section, %d) error", sid); |
| 799 |
return NULL; |
return NULL; |
| 800 |
} |
} |
| 801 |
else if (ret == 0) |
else if (ret == 0) |
| 816 |
|
|
| 817 |
if (p_section == NULL || p_article_src == NULL) |
if (p_section == NULL || p_article_src == NULL) |
| 818 |
{ |
{ |
| 819 |
log_error("section_list_append_article() NULL pointer error\n"); |
log_error("NULL pointer error"); |
| 820 |
return -1; |
return -1; |
| 821 |
} |
} |
| 822 |
|
|
| 823 |
if (p_article_block_pool == NULL) |
if (p_article_block_pool == NULL) |
| 824 |
{ |
{ |
| 825 |
log_error("article_block_pool not initialized\n"); |
log_error("article_block_pool not initialized"); |
| 826 |
return -1; |
return -1; |
| 827 |
} |
} |
| 828 |
|
|
| 829 |
if (p_section->sid != p_article_src->sid) |
if (p_section->sid != p_article_src->sid) |
| 830 |
{ |
{ |
| 831 |
log_error("section_list_append_article() error: section sid %d != article sid %d\n", p_section->sid, p_article_src->sid); |
log_error("section_list_append_article() error: section sid %d != article sid %d", p_section->sid, p_article_src->sid); |
| 832 |
return -2; |
return -2; |
| 833 |
} |
} |
| 834 |
|
|
| 835 |
if (p_section->article_count >= BBS_article_limit_per_section) |
if (p_section->article_count >= BBS_article_limit_per_section) |
| 836 |
{ |
{ |
| 837 |
log_error("section_list_append_article() error: article_count reach limit in section %d\n", p_section->sid); |
log_error("section_list_append_article() error: article_count reach limit in section %d", p_section->sid); |
| 838 |
return -2; |
return -2; |
| 839 |
} |
} |
| 840 |
|
|
| 841 |
if (p_article_block_pool->block_count == 0 || |
if (p_article_block_pool->block_count == 0 || |
| 842 |
p_article_block_pool->p_block[p_article_block_pool->block_count - 1]->article_count >= ARTICLE_PER_BLOCK) |
p_article_block_pool->p_block[p_article_block_pool->block_count - 1]->article_count >= BBS_article_count_per_block) |
| 843 |
{ |
{ |
| 844 |
if ((p_block = pop_free_article_block()) == NULL) |
if ((p_block = pop_free_article_block()) == NULL) |
| 845 |
{ |
{ |
| 846 |
log_error("pop_free_article_block() error\n"); |
log_error("pop_free_article_block() error"); |
| 847 |
return -2; |
return -2; |
| 848 |
} |
} |
| 849 |
|
|
| 850 |
if (p_article_block_pool->block_count > 0) |
if (p_article_block_pool->block_count > 0) |
| 851 |
{ |
{ |
| 852 |
last_aid = p_article_block_pool->p_block[p_article_block_pool->block_count - 1]->articles[ARTICLE_PER_BLOCK - 1].aid; |
last_aid = p_article_block_pool->p_block[p_article_block_pool->block_count - 1]->articles[BBS_article_count_per_block - 1].aid; |
| 853 |
} |
} |
| 854 |
|
|
| 855 |
p_article_block_pool->p_block[p_article_block_pool->block_count] = p_block; |
p_article_block_pool->p_block[p_article_block_pool->block_count] = p_block; |
| 864 |
// AID of articles should be strictly ascending |
// AID of articles should be strictly ascending |
| 865 |
if (p_article_src->aid <= last_aid) |
if (p_article_src->aid <= last_aid) |
| 866 |
{ |
{ |
| 867 |
log_error("section_list_append_article(aid=%d) error: last_aid=%d\n", p_article_src->aid, last_aid); |
log_error("section_list_append_article(aid=%d) error: last_aid=%d", p_article_src->aid, last_aid); |
| 868 |
return -3; |
return -3; |
| 869 |
} |
} |
| 870 |
|
|
| 886 |
p_topic_head = article_block_find_by_aid(p_article->tid); |
p_topic_head = article_block_find_by_aid(p_article->tid); |
| 887 |
if (p_topic_head == NULL) |
if (p_topic_head == NULL) |
| 888 |
{ |
{ |
| 889 |
log_error("search head of topic (aid=%d) error\n", p_article->tid); |
log_error("search head of topic (aid=%d) error", p_article->tid); |
| 890 |
return -4; |
return -4; |
| 891 |
} |
} |
| 892 |
|
|
| 893 |
p_topic_tail = p_topic_head->p_topic_prior; |
p_topic_tail = p_topic_head->p_topic_prior; |
| 894 |
if (p_topic_tail == NULL) |
if (p_topic_tail == NULL) |
| 895 |
{ |
{ |
| 896 |
log_error("tail of topic (aid=%d) is NULL\n", p_article->tid); |
log_error("tail of topic (aid=%d) is NULL", p_article->tid); |
| 897 |
return -4; |
return -4; |
| 898 |
} |
} |
| 899 |
} |
} |
| 928 |
p_section->p_article_tail = p_article; |
p_section->p_article_tail = p_article; |
| 929 |
|
|
| 930 |
// Update page |
// Update page |
| 931 |
if ((p_article->visible && p_section->last_page_visible_article_count % BBS_article_limit_per_page == 0) || |
if ((p_article->visible && p_section->last_page_visible_article_count == BBS_article_limit_per_page) || |
| 932 |
p_section->article_count == 1) |
p_section->page_count == 0) |
| 933 |
{ |
{ |
| 934 |
p_section->p_page_first_article[p_section->page_count] = p_article; |
p_section->p_page_first_article[p_section->page_count] = p_article; |
| 935 |
p_section->page_count++; |
p_section->page_count++; |
| 941 |
p_section->last_page_visible_article_count++; |
p_section->last_page_visible_article_count++; |
| 942 |
} |
} |
| 943 |
|
|
| 944 |
|
if (p_article->ontop && section_list_update_article_ontop(p_section, p_article) < 0) |
| 945 |
|
{ |
| 946 |
|
log_error("section_list_update_article_ontop(sid=%d, aid=%d) error", |
| 947 |
|
p_section->sid, p_article->aid); |
| 948 |
|
return -5; |
| 949 |
|
} |
| 950 |
|
|
| 951 |
return 0; |
return 0; |
| 952 |
} |
} |
| 953 |
|
|
| 959 |
|
|
| 960 |
if (p_section == NULL) |
if (p_section == NULL) |
| 961 |
{ |
{ |
| 962 |
log_error("section_list_set_article_visible() NULL pointer error\n"); |
log_error("NULL pointer error"); |
| 963 |
return -2; |
return -1; |
| 964 |
} |
} |
| 965 |
|
|
| 966 |
p_article = article_block_find_by_aid(aid); |
p_article = article_block_find_by_aid(aid); |
| 971 |
|
|
| 972 |
if (p_section->sid != p_article->sid) |
if (p_section->sid != p_article->sid) |
| 973 |
{ |
{ |
| 974 |
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", p_section->sid, p_article->sid); |
| 975 |
return -2; |
return -2; |
| 976 |
} |
} |
| 977 |
|
|
| 984 |
{ |
{ |
| 985 |
p_section->visible_article_count--; |
p_section->visible_article_count--; |
| 986 |
|
|
| 987 |
|
if (user_article_cnt_inc(p_article->uid, -1) < 0) |
| 988 |
|
{ |
| 989 |
|
log_error("user_article_cnt_inc(uid=%d, -1) error", p_article->uid); |
| 990 |
|
} |
| 991 |
|
|
| 992 |
if (p_article->tid == 0) |
if (p_article->tid == 0) |
| 993 |
{ |
{ |
| 994 |
p_section->visible_topic_count--; |
p_section->visible_topic_count--; |
| 998 |
{ |
{ |
| 999 |
if (p_reply->tid != aid) |
if (p_reply->tid != aid) |
| 1000 |
{ |
{ |
| 1001 |
log_error("Inconsistent tid = %d found in reply %d of topic %d\n", p_reply->tid, p_reply->aid, aid); |
log_error("Inconsistent tid = %d found in reply %d of topic %d", p_reply->tid, p_reply->aid, aid); |
| 1002 |
continue; |
continue; |
| 1003 |
} |
} |
| 1004 |
|
|
| 1007 |
p_reply->visible = 0; |
p_reply->visible = 0; |
| 1008 |
p_section->visible_article_count--; |
p_section->visible_article_count--; |
| 1009 |
affected_count++; |
affected_count++; |
| 1010 |
|
|
| 1011 |
|
if (user_article_cnt_inc(p_reply->uid, -1) < 0) |
| 1012 |
|
{ |
| 1013 |
|
log_error("user_article_cnt_inc(uid=%d, -1) error", p_reply->uid); |
| 1014 |
|
} |
| 1015 |
} |
} |
| 1016 |
} |
} |
| 1017 |
} |
} |
| 1024 |
{ |
{ |
| 1025 |
p_section->visible_topic_count++; |
p_section->visible_topic_count++; |
| 1026 |
} |
} |
| 1027 |
|
|
| 1028 |
|
if (user_article_cnt_inc(p_article->uid, 1) < 0) |
| 1029 |
|
{ |
| 1030 |
|
log_error("user_article_cnt_inc(uid=%d, 1) error", p_article->uid); |
| 1031 |
|
} |
| 1032 |
} |
} |
| 1033 |
|
|
| 1034 |
p_article->visible = visible; |
p_article->visible = visible; |
| 1037 |
return affected_count; |
return affected_count; |
| 1038 |
} |
} |
| 1039 |
|
|
| 1040 |
|
int section_list_set_article_excerption(SECTION_LIST *p_section, int32_t aid, int8_t excerption) |
| 1041 |
|
{ |
| 1042 |
|
ARTICLE *p_article; |
| 1043 |
|
|
| 1044 |
|
if (p_section == NULL) |
| 1045 |
|
{ |
| 1046 |
|
log_error("NULL pointer error"); |
| 1047 |
|
return -1; |
| 1048 |
|
} |
| 1049 |
|
|
| 1050 |
|
p_article = article_block_find_by_aid(aid); |
| 1051 |
|
if (p_article == NULL) |
| 1052 |
|
{ |
| 1053 |
|
return -1; // Not found |
| 1054 |
|
} |
| 1055 |
|
|
| 1056 |
|
if (p_section->sid != p_article->sid) |
| 1057 |
|
{ |
| 1058 |
|
log_error("Inconsistent section sid %d != article sid %d", p_section->sid, p_article->sid); |
| 1059 |
|
return -2; |
| 1060 |
|
} |
| 1061 |
|
|
| 1062 |
|
if (p_article->excerption == excerption) |
| 1063 |
|
{ |
| 1064 |
|
return 0; // Already set |
| 1065 |
|
} |
| 1066 |
|
|
| 1067 |
|
p_article->excerption = excerption; |
| 1068 |
|
|
| 1069 |
|
return 1; |
| 1070 |
|
} |
| 1071 |
|
|
| 1072 |
|
int section_list_update_article_ontop(SECTION_LIST *p_section, ARTICLE *p_article) |
| 1073 |
|
{ |
| 1074 |
|
int i; |
| 1075 |
|
|
| 1076 |
|
if (p_section == NULL || p_article == NULL) |
| 1077 |
|
{ |
| 1078 |
|
log_error("NULL pointer error"); |
| 1079 |
|
return -1; |
| 1080 |
|
} |
| 1081 |
|
|
| 1082 |
|
if (p_section->sid != p_article->sid) |
| 1083 |
|
{ |
| 1084 |
|
log_error("Inconsistent section sid %d != article sid %d", p_section->sid, p_article->sid); |
| 1085 |
|
return -2; |
| 1086 |
|
} |
| 1087 |
|
|
| 1088 |
|
if (p_article->ontop) |
| 1089 |
|
{ |
| 1090 |
|
for (i = 0; i < p_section->ontop_article_count; i++) |
| 1091 |
|
{ |
| 1092 |
|
if (p_section->p_ontop_articles[i]->aid == p_article->aid) |
| 1093 |
|
{ |
| 1094 |
|
log_error("Inconsistent state found: article %d already ontop in section %d", p_article->aid, p_section->sid); |
| 1095 |
|
return 0; |
| 1096 |
|
} |
| 1097 |
|
else if (p_section->p_ontop_articles[i]->aid > p_article->aid) |
| 1098 |
|
{ |
| 1099 |
|
break; |
| 1100 |
|
} |
| 1101 |
|
} |
| 1102 |
|
|
| 1103 |
|
// Remove the oldest one if the array of ontop articles is full |
| 1104 |
|
if (p_section->ontop_article_count >= BBS_ontop_article_limit_per_section) |
| 1105 |
|
{ |
| 1106 |
|
if (i == 0) // p_article is the oldest one |
| 1107 |
|
{ |
| 1108 |
|
return 0; |
| 1109 |
|
} |
| 1110 |
|
memmove((void *)(p_section->p_ontop_articles), |
| 1111 |
|
(void *)(p_section->p_ontop_articles + 1), |
| 1112 |
|
sizeof(ARTICLE *) * (size_t)(i - 1)); |
| 1113 |
|
p_section->ontop_article_count--; |
| 1114 |
|
i--; |
| 1115 |
|
} |
| 1116 |
|
else |
| 1117 |
|
{ |
| 1118 |
|
memmove((void *)(p_section->p_ontop_articles + i + 1), |
| 1119 |
|
(void *)(p_section->p_ontop_articles + i), |
| 1120 |
|
sizeof(ARTICLE *) * (size_t)(p_section->ontop_article_count - i)); |
| 1121 |
|
} |
| 1122 |
|
|
| 1123 |
|
p_section->p_ontop_articles[i] = p_article; |
| 1124 |
|
p_section->ontop_article_count++; |
| 1125 |
|
|
| 1126 |
|
// TODO: debug |
| 1127 |
|
} |
| 1128 |
|
else // ontop == 0 |
| 1129 |
|
{ |
| 1130 |
|
for (i = 0; i < p_section->ontop_article_count; i++) |
| 1131 |
|
{ |
| 1132 |
|
if (p_section->p_ontop_articles[i]->aid == p_article->aid) |
| 1133 |
|
{ |
| 1134 |
|
break; |
| 1135 |
|
} |
| 1136 |
|
} |
| 1137 |
|
if (i == p_section->ontop_article_count) // not found |
| 1138 |
|
{ |
| 1139 |
|
log_error("Inconsistent state found: article %d not ontop in section %d", p_article->aid, p_section->sid); |
| 1140 |
|
return 0; |
| 1141 |
|
} |
| 1142 |
|
|
| 1143 |
|
memmove((void *)(p_section->p_ontop_articles + i), |
| 1144 |
|
(void *)(p_section->p_ontop_articles + i + 1), |
| 1145 |
|
sizeof(ARTICLE *) * (size_t)(p_section->ontop_article_count - i - 1)); |
| 1146 |
|
p_section->ontop_article_count--; |
| 1147 |
|
} |
| 1148 |
|
|
| 1149 |
|
return 0; |
| 1150 |
|
} |
| 1151 |
|
|
| 1152 |
|
int section_list_page_count_with_ontop(SECTION_LIST *p_section) |
| 1153 |
|
{ |
| 1154 |
|
int page_count; |
| 1155 |
|
|
| 1156 |
|
if (p_section == NULL) |
| 1157 |
|
{ |
| 1158 |
|
log_error("NULL pointer error"); |
| 1159 |
|
return -1; |
| 1160 |
|
} |
| 1161 |
|
|
| 1162 |
|
page_count = p_section->page_count - 1 + |
| 1163 |
|
(p_section->last_page_visible_article_count + p_section->ontop_article_count + BBS_article_limit_per_page - 1) / |
| 1164 |
|
BBS_article_limit_per_page; |
| 1165 |
|
|
| 1166 |
|
if (page_count < 0) |
| 1167 |
|
{ |
| 1168 |
|
page_count = 0; |
| 1169 |
|
} |
| 1170 |
|
|
| 1171 |
|
return page_count; |
| 1172 |
|
} |
| 1173 |
|
|
| 1174 |
|
int section_list_page_article_count_with_ontop(SECTION_LIST *p_section, int32_t page_id) |
| 1175 |
|
{ |
| 1176 |
|
if (p_section == NULL) |
| 1177 |
|
{ |
| 1178 |
|
log_error("NULL pointer error"); |
| 1179 |
|
return -1; |
| 1180 |
|
} |
| 1181 |
|
|
| 1182 |
|
if (page_id < p_section->page_count - 1) |
| 1183 |
|
{ |
| 1184 |
|
return BBS_article_limit_per_page; |
| 1185 |
|
} |
| 1186 |
|
else // if (page_id >= p_section->page_count - 1) |
| 1187 |
|
{ |
| 1188 |
|
return MIN(MAX(0, |
| 1189 |
|
(p_section->last_page_visible_article_count + p_section->ontop_article_count - |
| 1190 |
|
BBS_article_limit_per_page * (page_id - p_section->page_count + 1))), |
| 1191 |
|
BBS_article_limit_per_page); |
| 1192 |
|
} |
| 1193 |
|
} |
| 1194 |
|
|
| 1195 |
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) |
| 1196 |
{ |
{ |
| 1197 |
ARTICLE *p_article; |
ARTICLE *p_article; |
| 1205 |
|
|
| 1206 |
if (p_section == NULL) |
if (p_section == NULL) |
| 1207 |
{ |
{ |
| 1208 |
log_error("section_list_find_article_with_offset() NULL pointer error\n"); |
log_error("NULL pointer error"); |
| 1209 |
return NULL; |
return NULL; |
| 1210 |
} |
} |
| 1211 |
|
|
| 1217 |
} |
} |
| 1218 |
|
|
| 1219 |
left = 0; |
left = 0; |
| 1220 |
right = p_section->page_count; |
right = p_section->page_count - 1; |
| 1221 |
|
|
| 1222 |
// 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] ] |
| 1223 |
while (left < right - 1) |
while (left < right) |
| 1224 |
{ |
{ |
| 1225 |
// 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 |
| 1226 |
mid = (left + right) / 2 + (right - left) % 2; |
mid = left + (right - left + 1) / 2; |
|
|
|
|
if (mid >= p_section->page_count) |
|
|
{ |
|
|
log_error("page id (mid = %d) is out of boundary\n", mid); |
|
|
return NULL; |
|
|
} |
|
| 1227 |
|
|
| 1228 |
if (aid < p_section->p_page_first_article[mid]->aid) |
if (aid < p_section->p_page_first_article[mid]->aid) |
| 1229 |
{ |
{ |
| 1230 |
right = mid; |
right = mid - 1; |
| 1231 |
} |
} |
| 1232 |
else |
else // if (aid < p_section->p_page_first_article[mid]->aid) |
| 1233 |
{ |
{ |
| 1234 |
left = mid; |
left = mid; |
| 1235 |
} |
} |
| 1291 |
|
|
| 1292 |
if (p_section == NULL) |
if (p_section == NULL) |
| 1293 |
{ |
{ |
| 1294 |
log_error("section_list_calculate_page() NULL pointer error\n"); |
log_error("NULL pointer error"); |
| 1295 |
return -1; |
return -1; |
| 1296 |
} |
} |
| 1297 |
|
|
| 1313 |
|
|
| 1314 |
if (p_section->sid != p_article->sid) |
if (p_section->sid != p_article->sid) |
| 1315 |
{ |
{ |
| 1316 |
log_error("section_list_calculate_page() error: section sid %d != start article sid %d\n", p_section->sid, p_article->sid); |
log_error("section_list_calculate_page() error: section sid %d != start article sid %d", p_section->sid, p_article->sid); |
| 1317 |
return -2; |
return -2; |
| 1318 |
} |
} |
| 1319 |
|
|
| 1324 |
{ |
{ |
| 1325 |
return -1; |
return -1; |
| 1326 |
} |
} |
| 1327 |
log_error("section_list_calculate_page() aid = %d not found in section sid = %d\n", |
log_error("section_list_calculate_page() aid = %d not found in section sid = %d", |
| 1328 |
start_aid, p_section->sid); |
start_aid, p_section->sid); |
| 1329 |
return -2; |
return -2; |
| 1330 |
} |
} |
| 1373 |
|
|
| 1374 |
if (page >= BBS_article_limit_per_section / BBS_article_limit_per_page && p_article != p_section->p_article_head) |
if (page >= BBS_article_limit_per_section / BBS_article_limit_per_page && p_article != p_section->p_article_head) |
| 1375 |
{ |
{ |
| 1376 |
log_error("Count of page exceed limit in section %d\n", p_section->sid); |
log_error("Count of page exceed limit in section %d", p_section->sid); |
| 1377 |
break; |
break; |
| 1378 |
} |
} |
| 1379 |
} |
} |
| 1380 |
} while (p_article != p_section->p_article_head); |
} while (p_article != p_section->p_article_head); |
| 1381 |
|
|
| 1382 |
p_section->page_count = page + (visible_article_count > 0 ? 1 : 0); |
p_section->page_count = page + (visible_article_count > 0 ? 1 : 0); |
| 1383 |
p_section->last_page_visible_article_count = visible_article_count; |
p_section->last_page_visible_article_count = (visible_article_count > 0 |
| 1384 |
|
? visible_article_count |
| 1385 |
|
: (page > 0 ? BBS_article_limit_per_page : 0)); |
| 1386 |
|
|
| 1387 |
return 0; |
return 0; |
| 1388 |
} |
} |
| 1404 |
return -1; |
return -1; |
| 1405 |
} |
} |
| 1406 |
|
|
| 1407 |
ret = (p_article_block_pool->block_count - 1) * ARTICLE_PER_BLOCK + |
ret = (p_article_block_pool->block_count - 1) * BBS_article_count_per_block + |
| 1408 |
p_article_block_pool->p_block[p_article_block_pool->block_count - 1]->article_count; |
p_article_block_pool->p_block[p_article_block_pool->block_count - 1]->article_count; |
| 1409 |
|
|
| 1410 |
return ret; |
return ret; |
| 1427 |
{ |
{ |
| 1428 |
if (p_article->tid != 0 && p_article->tid != aid) |
if (p_article->tid != 0 && p_article->tid != aid) |
| 1429 |
{ |
{ |
| 1430 |
log_error("article_count_of_topic(%d) error: article %d not linked to the topic\n", aid, p_article->aid); |
log_error("article_count_of_topic(%d) error: article %d not linked to the topic", aid, p_article->aid); |
| 1431 |
break; |
break; |
| 1432 |
} |
} |
| 1433 |
|
|
| 1452 |
|
|
| 1453 |
if (p_section_src == NULL || p_section_dest == NULL) |
if (p_section_src == NULL || p_section_dest == NULL) |
| 1454 |
{ |
{ |
| 1455 |
log_error("section_list_move_topic() NULL pointer error\n"); |
log_error("NULL pointer error"); |
| 1456 |
return -1; |
return -1; |
| 1457 |
} |
} |
| 1458 |
|
|
| 1459 |
if (p_section_src->sid == p_section_dest->sid) |
if (p_section_src->sid == p_section_dest->sid) |
| 1460 |
{ |
{ |
| 1461 |
log_error("section_list_move_topic() src and dest section are the same\n"); |
log_error("section_list_move_topic() src and dest section are the same"); |
| 1462 |
return -1; |
return -1; |
| 1463 |
} |
} |
| 1464 |
|
|
| 1465 |
if ((p_article = article_block_find_by_aid(aid)) == NULL) |
if ((p_article = article_block_find_by_aid(aid)) == NULL) |
| 1466 |
{ |
{ |
| 1467 |
log_error("article_block_find_by_aid(aid = %d) error: article not found\n", aid); |
log_error("article_block_find_by_aid(aid = %d) error: article not found", aid); |
| 1468 |
return -2; |
return -2; |
| 1469 |
} |
} |
| 1470 |
|
|
| 1471 |
if (p_section_src->sid != p_article->sid) |
if (p_section_src->sid != p_article->sid) |
| 1472 |
{ |
{ |
| 1473 |
log_error("section_list_move_topic() error: src section sid %d != article %d sid %d\n", |
log_error("section_list_move_topic() error: src section sid %d != article %d sid %d", |
| 1474 |
p_section_src->sid, p_article->aid, p_article->sid); |
p_section_src->sid, p_article->aid, p_article->sid); |
| 1475 |
return -2; |
return -2; |
| 1476 |
} |
} |
| 1477 |
|
|
| 1478 |
if (p_article->tid != 0) |
if (p_article->tid != 0) |
| 1479 |
{ |
{ |
| 1480 |
log_error("section_list_move_topic(aid = %d) error: article is not head of topic, tid = %d\n", aid, p_article->tid); |
log_error("section_list_move_topic(aid = %d) error: article is not head of topic, tid = %d", aid, p_article->tid); |
| 1481 |
return -2; |
return -2; |
| 1482 |
} |
} |
| 1483 |
|
|
| 1486 |
move_article_count = article_count_of_topic(aid); |
move_article_count = article_count_of_topic(aid); |
| 1487 |
if (move_article_count <= 0) |
if (move_article_count <= 0) |
| 1488 |
{ |
{ |
| 1489 |
log_error("article_count_of_topic(aid = %d) <= 0\n", aid); |
log_error("article_count_of_topic(aid = %d) <= 0", aid); |
| 1490 |
return -2; |
return -2; |
| 1491 |
} |
} |
| 1492 |
|
|
| 1493 |
if (p_section_dest->article_count + move_article_count > BBS_article_limit_per_section) |
if (p_section_dest->article_count + move_article_count > BBS_article_limit_per_section) |
| 1494 |
{ |
{ |
| 1495 |
log_error("section_list_move_topic() error: article_count %d reach limit in section %d\n", |
log_error("section_list_move_topic() error: article_count %d reach limit in section %d", |
| 1496 |
p_section_dest->article_count + move_article_count, p_section_dest->sid); |
p_section_dest->article_count + move_article_count, p_section_dest->sid); |
| 1497 |
return -3; |
return -3; |
| 1498 |
} |
} |
| 1505 |
{ |
{ |
| 1506 |
if (p_section_src->sid != p_article->sid) |
if (p_section_src->sid != p_article->sid) |
| 1507 |
{ |
{ |
| 1508 |
log_error("section_list_move_topic() warning: src section sid %d != article %d sid %d\n", |
log_error("section_list_move_topic() warning: src section sid %d != article %d sid %d", |
| 1509 |
p_section_src->sid, p_article->aid, p_article->sid); |
p_section_src->sid, p_article->aid, p_article->sid); |
| 1510 |
p_article = p_article->p_topic_next; |
p_article = p_article->p_topic_next; |
| 1511 |
continue; |
continue; |
| 1520 |
{ |
{ |
| 1521 |
p_section_src->p_article_tail = p_article->p_prior; |
p_section_src->p_article_tail = p_article->p_prior; |
| 1522 |
} |
} |
| 1523 |
if (p_section_src->p_article_head == p_article) // || p_section_src->p_article_tail == p_article |
if (p_section_src->p_article_head == p_article) // Single element list |
| 1524 |
{ |
{ |
| 1525 |
p_section_src->p_article_head = NULL; |
p_section_src->p_article_head = NULL; |
| 1526 |
p_section_src->p_article_tail = NULL; |
p_section_src->p_article_tail = NULL; |
| 1527 |
} |
} |
| 1528 |
|
else |
| 1529 |
p_article->p_prior->p_next = p_article->p_next; |
{ |
| 1530 |
p_article->p_next->p_prior = p_article->p_prior; |
// Only update neighbor pointers if list is not empty after removal |
| 1531 |
|
p_article->p_prior->p_next = p_article->p_next; |
| 1532 |
|
p_article->p_next->p_prior = p_article->p_prior; |
| 1533 |
|
} |
| 1534 |
|
|
| 1535 |
// Update sid of article |
// Update sid of article |
| 1536 |
p_article->sid = p_section_dest->sid; |
p_article->sid = p_section_dest->sid; |
| 1537 |
|
|
| 1538 |
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) |
| 1539 |
{ |
{ |
| 1540 |
log_error("section_list_move_topic() warning: 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", p_article->aid, p_section_dest->sid); |
| 1541 |
p_article = p_article->p_topic_next; |
p_article = p_article->p_topic_next; |
| 1542 |
continue; |
continue; |
| 1543 |
} |
} |
| 1607 |
// Re-calculate pages of desc section |
// Re-calculate pages of desc section |
| 1608 |
if (section_list_calculate_page(p_section_dest, first_inserted_aid_dest) < 0) |
if (section_list_calculate_page(p_section_dest, first_inserted_aid_dest) < 0) |
| 1609 |
{ |
{ |
| 1610 |
log_error("section_list_calculate_page(dest section = %d, aid = %d) error\n", |
log_error("section_list_calculate_page(dest section = %d, aid = %d) error", |
| 1611 |
p_section_dest->sid, first_inserted_aid_dest); |
p_section_dest->sid, first_inserted_aid_dest); |
| 1612 |
} |
} |
| 1613 |
|
|
| 1617 |
|
|
| 1618 |
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) |
| 1619 |
{ |
{ |
| 1620 |
log_error("section_list_move_topic() warning: count of moved articles %d != %d\n", |
log_error("section_list_move_topic() warning: count of moved articles %d != %d", |
| 1621 |
p_section_dest->article_count - dest_article_count_old, move_article_count); |
p_section_dest->article_count - dest_article_count_old, move_article_count); |
| 1622 |
} |
} |
| 1623 |
|
|
| 1624 |
// Re-calculate pages of src section |
// Re-calculate pages of src section |
| 1625 |
if (section_list_calculate_page(p_section_src, last_unaffected_aid_src) < 0) |
if (section_list_calculate_page(p_section_src, last_unaffected_aid_src) < 0) |
| 1626 |
{ |
{ |
| 1627 |
log_error("section_list_calculate_page(src section = %d, aid = %d) error at aid = %d\n", |
log_error("section_list_calculate_page(src section = %d, aid = %d) error at aid = %d", |
| 1628 |
p_section_src->sid, last_unaffected_aid_src, aid); |
p_section_src->sid, last_unaffected_aid_src, aid); |
| 1629 |
} |
} |
| 1630 |
|
|
| 1633 |
// Re-calculate pages of desc section |
// Re-calculate pages of desc section |
| 1634 |
if (section_list_calculate_page(p_section_dest, first_inserted_aid_dest) < 0) |
if (section_list_calculate_page(p_section_dest, first_inserted_aid_dest) < 0) |
| 1635 |
{ |
{ |
| 1636 |
log_error("section_list_calculate_page(dest section = %d, aid = %d) error\n", |
log_error("section_list_calculate_page(dest section = %d, aid = %d) error", |
| 1637 |
p_section_dest->sid, first_inserted_aid_dest); |
p_section_dest->sid, first_inserted_aid_dest); |
| 1638 |
} |
} |
| 1639 |
} |
} |
| 1647 |
|
|
| 1648 |
if (p_section_list_pool == NULL) |
if (p_section_list_pool == NULL) |
| 1649 |
{ |
{ |
| 1650 |
log_error("get_section_index() error: uninitialized\n"); |
log_error("get_section_index() error: uninitialized"); |
| 1651 |
return -1; |
return -1; |
| 1652 |
} |
} |
| 1653 |
|
|
| 1660 |
index = (int)(p_section - p_section_list_pool->sections); |
index = (int)(p_section - p_section_list_pool->sections); |
| 1661 |
if (index < 0 || index >= BBS_max_section) |
if (index < 0 || index >= BBS_max_section) |
| 1662 |
{ |
{ |
| 1663 |
log_error("get_section_index(%d) error: index out of range\n", index); |
log_error("get_section_index(%d) error: index out of range", index); |
| 1664 |
return -2; |
return -2; |
| 1665 |
} |
} |
| 1666 |
} |
} |
| 1668 |
return index; |
return index; |
| 1669 |
} |
} |
| 1670 |
|
|
| 1671 |
|
int get_section_info(SECTION_LIST *p_section, char *sname, char *stitle, char *master_list) |
| 1672 |
|
{ |
| 1673 |
|
if (p_section == NULL) |
| 1674 |
|
{ |
| 1675 |
|
log_error("NULL pointer error"); |
| 1676 |
|
return -1; |
| 1677 |
|
} |
| 1678 |
|
|
| 1679 |
|
if (section_list_rd_lock(p_section) < 0) |
| 1680 |
|
{ |
| 1681 |
|
log_error("section_list_rd_lock(sid=%d) error", p_section->sid); |
| 1682 |
|
return -2; |
| 1683 |
|
} |
| 1684 |
|
|
| 1685 |
|
if (sname != NULL) |
| 1686 |
|
{ |
| 1687 |
|
memcpy(sname, p_section->sname, sizeof(p_section->sname)); |
| 1688 |
|
} |
| 1689 |
|
if (stitle != NULL) |
| 1690 |
|
{ |
| 1691 |
|
memcpy(stitle, p_section->stitle, sizeof(p_section->stitle)); |
| 1692 |
|
} |
| 1693 |
|
if (master_list != NULL) |
| 1694 |
|
{ |
| 1695 |
|
memcpy(master_list, p_section->master_list, sizeof(p_section->master_list)); |
| 1696 |
|
} |
| 1697 |
|
|
| 1698 |
|
// release lock of section |
| 1699 |
|
if (section_list_rd_unlock(p_section) < 0) |
| 1700 |
|
{ |
| 1701 |
|
log_error("section_list_rd_unlock(sid=%d) error", p_section->sid); |
| 1702 |
|
return -2; |
| 1703 |
|
} |
| 1704 |
|
|
| 1705 |
|
return 0; |
| 1706 |
|
} |
| 1707 |
|
|
| 1708 |
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) |
| 1709 |
{ |
{ |
| 1710 |
int index; |
int index; |
| 1711 |
|
#ifdef HAVE_SYSTEM_V |
| 1712 |
struct sembuf sops[4]; |
struct sembuf sops[4]; |
| 1713 |
|
#endif |
| 1714 |
struct timespec timeout; |
struct timespec timeout; |
| 1715 |
int ret; |
int ret = 0; |
| 1716 |
|
|
| 1717 |
index = get_section_index(p_section); |
index = get_section_index(p_section); |
| 1718 |
if (index < 0) |
if (index < 0) |
| 1720 |
return -2; |
return -2; |
| 1721 |
} |
} |
| 1722 |
|
|
| 1723 |
|
timeout.tv_sec = wait_sec; |
| 1724 |
|
timeout.tv_nsec = 0; |
| 1725 |
|
|
| 1726 |
|
#ifdef HAVE_SYSTEM_V |
| 1727 |
sops[0].sem_num = (unsigned short)(index * 2 + 1); // w_sem of section index |
sops[0].sem_num = (unsigned short)(index * 2 + 1); // w_sem of section index |
| 1728 |
sops[0].sem_op = 0; // wait until unlocked |
sops[0].sem_op = 0; // wait until unlocked |
| 1729 |
sops[0].sem_flg = 0; |
sops[0].sem_flg = 0; |
| 1746 |
sops[3].sem_flg = SEM_UNDO; // undo on terminate |
sops[3].sem_flg = SEM_UNDO; // undo on terminate |
| 1747 |
} |
} |
| 1748 |
|
|
|
timeout.tv_sec = wait_sec; |
|
|
timeout.tv_nsec = 0; |
|
|
|
|
| 1749 |
ret = semtimedop(p_section_list_pool->semid, sops, (index == BBS_max_section ? 2 : 4), &timeout); |
ret = semtimedop(p_section_list_pool->semid, sops, (index == BBS_max_section ? 2 : 4), &timeout); |
| 1750 |
if (ret == -1 && errno != EAGAIN && errno != EINTR) |
if (ret == -1 && errno != EAGAIN && errno != EINTR) |
| 1751 |
{ |
{ |
| 1752 |
log_error("semtimedop(index = %d, lock read) error %d\n", index, errno); |
log_error("semop(index = %d, lock read) error %d", index, errno); |
| 1753 |
|
} |
| 1754 |
|
#else |
| 1755 |
|
if (sem_timedwait(&(p_section_list_pool->sem[index]), &timeout) == -1) |
| 1756 |
|
{ |
| 1757 |
|
if (errno != ETIMEDOUT && errno != EAGAIN && errno != EINTR) |
| 1758 |
|
{ |
| 1759 |
|
log_error("sem_timedwait(sem[%d]) error %d", index, errno); |
| 1760 |
|
} |
| 1761 |
|
return -1; |
| 1762 |
} |
} |
| 1763 |
|
|
| 1764 |
|
if (index != BBS_max_section) |
| 1765 |
|
{ |
| 1766 |
|
if (sem_timedwait(&(p_section_list_pool->sem[BBS_max_section]), &timeout) == -1) |
| 1767 |
|
{ |
| 1768 |
|
if (errno != ETIMEDOUT && errno != EAGAIN && errno != EINTR) |
| 1769 |
|
{ |
| 1770 |
|
log_error("sem_timedwait(sem[%d]) error %d", BBS_max_section, errno); |
| 1771 |
|
} |
| 1772 |
|
// release previously acquired lock |
| 1773 |
|
if (sem_post(&(p_section_list_pool->sem[index])) == -1) |
| 1774 |
|
{ |
| 1775 |
|
log_error("sem_post(sem[%d]) error %d", index, errno); |
| 1776 |
|
} |
| 1777 |
|
return -1; |
| 1778 |
|
} |
| 1779 |
|
} |
| 1780 |
|
|
| 1781 |
|
if (p_section_list_pool->write_lock_count[index] == 0 && |
| 1782 |
|
(index != BBS_max_section && p_section_list_pool->write_lock_count[BBS_max_section] == 0)) |
| 1783 |
|
{ |
| 1784 |
|
p_section_list_pool->read_lock_count[index]++; |
| 1785 |
|
if (index != BBS_max_section) |
| 1786 |
|
{ |
| 1787 |
|
p_section_list_pool->read_lock_count[BBS_max_section]++; |
| 1788 |
|
} |
| 1789 |
|
} |
| 1790 |
|
else |
| 1791 |
|
{ |
| 1792 |
|
errno = EAGAIN; |
| 1793 |
|
ret = -1; |
| 1794 |
|
} |
| 1795 |
|
|
| 1796 |
|
if (index != BBS_max_section) |
| 1797 |
|
{ |
| 1798 |
|
// release lock on "all section" |
| 1799 |
|
if (sem_post(&(p_section_list_pool->sem[BBS_max_section])) == -1) |
| 1800 |
|
{ |
| 1801 |
|
log_error("sem_post(sem[%d]) error %d", BBS_max_section, errno); |
| 1802 |
|
ret = -1; |
| 1803 |
|
} |
| 1804 |
|
} |
| 1805 |
|
|
| 1806 |
|
if (sem_post(&(p_section_list_pool->sem[index])) == -1) |
| 1807 |
|
{ |
| 1808 |
|
log_error("sem_post(sem[%d]) error %d", index, errno); |
| 1809 |
|
return -1; |
| 1810 |
|
} |
| 1811 |
|
#endif |
| 1812 |
|
|
| 1813 |
return ret; |
return ret; |
| 1814 |
} |
} |
| 1815 |
|
|
| 1816 |
int section_list_try_rw_lock(SECTION_LIST *p_section, int wait_sec) |
int section_list_try_rw_lock(SECTION_LIST *p_section, int wait_sec) |
| 1817 |
{ |
{ |
| 1818 |
int index; |
int index; |
| 1819 |
|
#ifdef HAVE_SYSTEM_V |
| 1820 |
struct sembuf sops[3]; |
struct sembuf sops[3]; |
| 1821 |
|
#endif |
| 1822 |
struct timespec timeout; |
struct timespec timeout; |
| 1823 |
int ret; |
int ret = 0; |
| 1824 |
|
|
| 1825 |
index = get_section_index(p_section); |
index = get_section_index(p_section); |
| 1826 |
if (index < 0) |
if (index < 0) |
| 1828 |
return -2; |
return -2; |
| 1829 |
} |
} |
| 1830 |
|
|
| 1831 |
|
timeout.tv_sec = wait_sec; |
| 1832 |
|
timeout.tv_nsec = 0; |
| 1833 |
|
|
| 1834 |
|
#ifdef HAVE_SYSTEM_V |
| 1835 |
sops[0].sem_num = (unsigned short)(index * 2 + 1); // w_sem of section index |
sops[0].sem_num = (unsigned short)(index * 2 + 1); // w_sem of section index |
| 1836 |
sops[0].sem_op = 0; // wait until unlocked |
sops[0].sem_op = 0; // wait until unlocked |
| 1837 |
sops[0].sem_flg = 0; |
sops[0].sem_flg = 0; |
| 1844 |
sops[2].sem_op = 0; // wait until unlocked |
sops[2].sem_op = 0; // wait until unlocked |
| 1845 |
sops[2].sem_flg = 0; |
sops[2].sem_flg = 0; |
| 1846 |
|
|
|
timeout.tv_sec = wait_sec; |
|
|
timeout.tv_nsec = 0; |
|
|
|
|
| 1847 |
ret = semtimedop(p_section_list_pool->semid, sops, 3, &timeout); |
ret = semtimedop(p_section_list_pool->semid, sops, 3, &timeout); |
| 1848 |
if (ret == -1 && errno != EAGAIN && errno != EINTR) |
if (ret == -1 && errno != EAGAIN && errno != EINTR) |
| 1849 |
{ |
{ |
| 1850 |
log_error("semtimedop(index = %d, lock write) error %d\n", index, errno); |
log_error("semop(index = %d, lock write) error %d", index, errno); |
| 1851 |
} |
} |
| 1852 |
|
#else |
| 1853 |
|
if (sem_timedwait(&(p_section_list_pool->sem[index]), &timeout) == -1) |
| 1854 |
|
{ |
| 1855 |
|
if (errno != ETIMEDOUT && errno != EAGAIN && errno != EINTR) |
| 1856 |
|
{ |
| 1857 |
|
log_error("sem_timedwait(sem[%d]) error %d", index, errno); |
| 1858 |
|
} |
| 1859 |
|
return -1; |
| 1860 |
|
} |
| 1861 |
|
|
| 1862 |
|
if (p_section_list_pool->read_lock_count[index] == 0 && p_section_list_pool->write_lock_count[index] == 0) |
| 1863 |
|
{ |
| 1864 |
|
p_section_list_pool->write_lock_count[index]++; |
| 1865 |
|
} |
| 1866 |
|
else |
| 1867 |
|
{ |
| 1868 |
|
errno = EAGAIN; |
| 1869 |
|
ret = -1; |
| 1870 |
|
} |
| 1871 |
|
|
| 1872 |
|
if (sem_post(&(p_section_list_pool->sem[index])) == -1) |
| 1873 |
|
{ |
| 1874 |
|
log_error("sem_post(sem[%d]) error %d", index, errno); |
| 1875 |
|
return -1; |
| 1876 |
|
} |
| 1877 |
|
#endif |
| 1878 |
|
|
| 1879 |
return ret; |
return ret; |
| 1880 |
} |
} |
| 1882 |
int section_list_rd_unlock(SECTION_LIST *p_section) |
int section_list_rd_unlock(SECTION_LIST *p_section) |
| 1883 |
{ |
{ |
| 1884 |
int index; |
int index; |
| 1885 |
|
#ifdef HAVE_SYSTEM_V |
| 1886 |
struct sembuf sops[2]; |
struct sembuf sops[2]; |
| 1887 |
int ret; |
#endif |
| 1888 |
|
int ret = 0; |
| 1889 |
|
|
| 1890 |
index = get_section_index(p_section); |
index = get_section_index(p_section); |
| 1891 |
if (index < 0) |
if (index < 0) |
| 1893 |
return -2; |
return -2; |
| 1894 |
} |
} |
| 1895 |
|
|
| 1896 |
|
#ifdef HAVE_SYSTEM_V |
| 1897 |
sops[0].sem_num = (unsigned short)(index * 2); // r_sem of section index |
sops[0].sem_num = (unsigned short)(index * 2); // r_sem of section index |
| 1898 |
sops[0].sem_op = -1; // unlock |
sops[0].sem_op = -1; // unlock |
| 1899 |
sops[0].sem_flg = IPC_NOWAIT | SEM_UNDO; // no wait |
sops[0].sem_flg = IPC_NOWAIT | SEM_UNDO; // no wait |
| 1908 |
ret = semop(p_section_list_pool->semid, sops, (index == BBS_max_section ? 1 : 2)); |
ret = semop(p_section_list_pool->semid, sops, (index == BBS_max_section ? 1 : 2)); |
| 1909 |
if (ret == -1 && errno != EAGAIN && errno != EINTR) |
if (ret == -1 && errno != EAGAIN && errno != EINTR) |
| 1910 |
{ |
{ |
| 1911 |
log_error("semop(index = %d, unlock read) error %d\n", index, errno); |
log_error("semop(index = %d, unlock read) error %d", index, errno); |
| 1912 |
|
} |
| 1913 |
|
#else |
| 1914 |
|
if (sem_wait(&(p_section_list_pool->sem[index])) == -1) |
| 1915 |
|
{ |
| 1916 |
|
if (errno != ETIMEDOUT && errno != EAGAIN && errno != EINTR) |
| 1917 |
|
{ |
| 1918 |
|
log_error("sem_wait(sem[%d]) error %d", index, errno); |
| 1919 |
|
} |
| 1920 |
|
return -1; |
| 1921 |
} |
} |
| 1922 |
|
|
| 1923 |
|
if (index != BBS_max_section) |
| 1924 |
|
{ |
| 1925 |
|
if (sem_wait(&(p_section_list_pool->sem[BBS_max_section])) == -1) |
| 1926 |
|
{ |
| 1927 |
|
if (errno != ETIMEDOUT && errno != EAGAIN && errno != EINTR) |
| 1928 |
|
{ |
| 1929 |
|
log_error("sem_wait(sem[%d]) error %d", BBS_max_section, errno); |
| 1930 |
|
} |
| 1931 |
|
// release previously acquired lock |
| 1932 |
|
if (sem_post(&(p_section_list_pool->sem[index])) == -1) |
| 1933 |
|
{ |
| 1934 |
|
log_error("sem_post(sem[%d]) error %d", index, errno); |
| 1935 |
|
} |
| 1936 |
|
return -1; |
| 1937 |
|
} |
| 1938 |
|
} |
| 1939 |
|
|
| 1940 |
|
if (p_section_list_pool->read_lock_count[index] > 0) |
| 1941 |
|
{ |
| 1942 |
|
p_section_list_pool->read_lock_count[index]--; |
| 1943 |
|
} |
| 1944 |
|
else |
| 1945 |
|
{ |
| 1946 |
|
log_error("read_lock_count[%d] already 0", index); |
| 1947 |
|
} |
| 1948 |
|
|
| 1949 |
|
if (index != BBS_max_section && p_section_list_pool->read_lock_count[BBS_max_section] > 0) |
| 1950 |
|
{ |
| 1951 |
|
p_section_list_pool->read_lock_count[BBS_max_section]--; |
| 1952 |
|
} |
| 1953 |
|
else |
| 1954 |
|
{ |
| 1955 |
|
log_error("read_lock_count[%d] already 0", BBS_max_section); |
| 1956 |
|
} |
| 1957 |
|
|
| 1958 |
|
if (index != BBS_max_section) |
| 1959 |
|
{ |
| 1960 |
|
// release lock on "all section" |
| 1961 |
|
if (sem_post(&(p_section_list_pool->sem[BBS_max_section])) == -1) |
| 1962 |
|
{ |
| 1963 |
|
log_error("sem_post(sem[%d]) error %d", BBS_max_section, errno); |
| 1964 |
|
ret = -1; |
| 1965 |
|
} |
| 1966 |
|
} |
| 1967 |
|
|
| 1968 |
|
if (sem_post(&(p_section_list_pool->sem[index])) == -1) |
| 1969 |
|
{ |
| 1970 |
|
log_error("sem_post(sem[%d]) error %d", index, errno); |
| 1971 |
|
return -1; |
| 1972 |
|
} |
| 1973 |
|
#endif |
| 1974 |
|
|
| 1975 |
return ret; |
return ret; |
| 1976 |
} |
} |
| 1977 |
|
|
| 1978 |
int section_list_rw_unlock(SECTION_LIST *p_section) |
int section_list_rw_unlock(SECTION_LIST *p_section) |
| 1979 |
{ |
{ |
| 1980 |
int index; |
int index; |
| 1981 |
|
#ifdef HAVE_SYSTEM_V |
| 1982 |
struct sembuf sops[1]; |
struct sembuf sops[1]; |
| 1983 |
int ret; |
#endif |
| 1984 |
|
int ret = 0; |
| 1985 |
|
|
| 1986 |
index = get_section_index(p_section); |
index = get_section_index(p_section); |
| 1987 |
if (index < 0) |
if (index < 0) |
| 1989 |
return -2; |
return -2; |
| 1990 |
} |
} |
| 1991 |
|
|
| 1992 |
|
#ifdef HAVE_SYSTEM_V |
| 1993 |
sops[0].sem_num = (unsigned short)(index * 2 + 1); // w_sem of section index |
sops[0].sem_num = (unsigned short)(index * 2 + 1); // w_sem of section index |
| 1994 |
sops[0].sem_op = -1; // unlock |
sops[0].sem_op = -1; // unlock |
| 1995 |
sops[0].sem_flg = IPC_NOWAIT | SEM_UNDO; // no wait |
sops[0].sem_flg = IPC_NOWAIT | SEM_UNDO; // no wait |
| 1997 |
ret = semop(p_section_list_pool->semid, sops, 1); |
ret = semop(p_section_list_pool->semid, sops, 1); |
| 1998 |
if (ret == -1 && errno != EAGAIN && errno != EINTR) |
if (ret == -1 && errno != EAGAIN && errno != EINTR) |
| 1999 |
{ |
{ |
| 2000 |
log_error("semop(index = %d, unlock write) error %d\n", index, errno); |
log_error("semop(index = %d, unlock write) error %d", index, errno); |
| 2001 |
|
} |
| 2002 |
|
#else |
| 2003 |
|
if (sem_wait(&(p_section_list_pool->sem[index])) == -1) |
| 2004 |
|
{ |
| 2005 |
|
if (errno != ETIMEDOUT && errno != EAGAIN && errno != EINTR) |
| 2006 |
|
{ |
| 2007 |
|
log_error("sem_wait(sem[%d]) error %d", index, errno); |
| 2008 |
|
} |
| 2009 |
|
return -1; |
| 2010 |
|
} |
| 2011 |
|
|
| 2012 |
|
if (p_section_list_pool->write_lock_count[index] > 0) |
| 2013 |
|
{ |
| 2014 |
|
p_section_list_pool->write_lock_count[index]--; |
| 2015 |
|
} |
| 2016 |
|
else |
| 2017 |
|
{ |
| 2018 |
|
log_error("write_lock_count[%d] already 0", index); |
| 2019 |
} |
} |
| 2020 |
|
|
| 2021 |
|
if (sem_post(&(p_section_list_pool->sem[index])) == -1) |
| 2022 |
|
{ |
| 2023 |
|
log_error("sem_post(sem[%d]) error %d", index, errno); |
| 2024 |
|
return -1; |
| 2025 |
|
} |
| 2026 |
|
#endif |
| 2027 |
|
|
| 2028 |
return ret; |
return ret; |
| 2029 |
} |
} |
| 2030 |
|
|
| 2033 |
int timer = 0; |
int timer = 0; |
| 2034 |
int sid = (p_section == NULL ? 0 : p_section->sid); |
int sid = (p_section == NULL ? 0 : p_section->sid); |
| 2035 |
int ret = -1; |
int ret = -1; |
| 2036 |
|
time_t tm_first_failure = 0; |
| 2037 |
|
|
| 2038 |
while (!SYS_server_exit) |
while (!SYS_server_exit) |
| 2039 |
{ |
{ |
| 2044 |
} |
} |
| 2045 |
else if (errno == EAGAIN || errno == EINTR) // retry |
else if (errno == EAGAIN || errno == EINTR) // retry |
| 2046 |
{ |
{ |
| 2047 |
|
// Dead lock detection |
| 2048 |
|
if (tm_first_failure == 0) |
| 2049 |
|
{ |
| 2050 |
|
time(&tm_first_failure); |
| 2051 |
|
} |
| 2052 |
|
|
| 2053 |
timer++; |
timer++; |
| 2054 |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
| 2055 |
{ |
{ |
| 2056 |
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", timer, sid); |
| 2057 |
|
if (time(NULL) - tm_first_failure >= SECTION_DEAD_LOCK_TIMEOUT) |
| 2058 |
|
{ |
| 2059 |
|
log_error("Unable to acquire rd_lock for %d seconds", time(NULL) - tm_first_failure); |
| 2060 |
|
#ifndef HAVE_SYSTEM_V |
| 2061 |
|
section_list_reset_lock(p_section); |
| 2062 |
|
log_error("Reset POSIX semaphore to resolve dead lock"); |
| 2063 |
|
#endif |
| 2064 |
|
break; |
| 2065 |
|
} |
| 2066 |
} |
} |
| 2067 |
|
usleep(100 * 1000); // 0.1 second |
| 2068 |
} |
} |
| 2069 |
else // failed |
else // failed |
| 2070 |
{ |
{ |
| 2071 |
log_error("section_list_rd_lock() failed on section %d\n", sid); |
log_error("section_list_try_rd_lock() failed on section %d", sid); |
| 2072 |
break; |
break; |
| 2073 |
} |
} |
| 2074 |
} |
} |
| 2081 |
int timer = 0; |
int timer = 0; |
| 2082 |
int sid = (p_section == NULL ? 0 : p_section->sid); |
int sid = (p_section == NULL ? 0 : p_section->sid); |
| 2083 |
int ret = -1; |
int ret = -1; |
| 2084 |
|
time_t tm_first_failure = 0; |
| 2085 |
|
|
| 2086 |
while (!SYS_server_exit) |
while (!SYS_server_exit) |
| 2087 |
{ |
{ |
| 2092 |
} |
} |
| 2093 |
else if (errno == EAGAIN || errno == EINTR) // retry |
else if (errno == EAGAIN || errno == EINTR) // retry |
| 2094 |
{ |
{ |
| 2095 |
|
// Dead lock detection |
| 2096 |
|
if (tm_first_failure == 0) |
| 2097 |
|
{ |
| 2098 |
|
time(&tm_first_failure); |
| 2099 |
|
} |
| 2100 |
|
|
| 2101 |
timer++; |
timer++; |
| 2102 |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
if (timer % SECTION_TRY_LOCK_TIMES == 0) |
| 2103 |
{ |
{ |
| 2104 |
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", timer, sid); |
| 2105 |
|
if (time(NULL) - tm_first_failure >= SECTION_DEAD_LOCK_TIMEOUT) |
| 2106 |
|
{ |
| 2107 |
|
log_error("Unable to acquire rw_lock for %d seconds", time(NULL) - tm_first_failure); |
| 2108 |
|
#ifndef HAVE_SYSTEM_V |
| 2109 |
|
section_list_reset_lock(p_section); |
| 2110 |
|
log_error("Reset POSIX semaphore to resolve dead lock"); |
| 2111 |
|
#endif |
| 2112 |
|
break; |
| 2113 |
|
} |
| 2114 |
} |
} |
| 2115 |
|
usleep(100 * 1000); // 0.1 second |
| 2116 |
} |
} |
| 2117 |
else // failed |
else // failed |
| 2118 |
{ |
{ |
| 2119 |
log_error("acquire_section_rw_lock() failed on section %d\n", sid); |
log_error("section_list_try_rw_lock() failed on section %d", sid); |
| 2120 |
break; |
break; |
| 2121 |
} |
} |
| 2122 |
} |
} |
| 2123 |
|
|
| 2124 |
return ret; |
return ret; |
| 2125 |
} |
} |
| 2126 |
|
|
| 2127 |
|
#ifndef HAVE_SYSTEM_V |
| 2128 |
|
int section_list_reset_lock(SECTION_LIST *p_section) |
| 2129 |
|
{ |
| 2130 |
|
int index; |
| 2131 |
|
|
| 2132 |
|
if (p_section == NULL) |
| 2133 |
|
{ |
| 2134 |
|
log_error("NULL pointer error"); |
| 2135 |
|
return -1; |
| 2136 |
|
} |
| 2137 |
|
|
| 2138 |
|
index = get_section_index(p_section); |
| 2139 |
|
if (index < 0) |
| 2140 |
|
{ |
| 2141 |
|
return -2; |
| 2142 |
|
} |
| 2143 |
|
|
| 2144 |
|
if (sem_destroy(&(p_section_list_pool->sem[index])) == -1) |
| 2145 |
|
{ |
| 2146 |
|
log_error("sem_destroy(sem[%d]) error (%d)", index, errno); |
| 2147 |
|
} |
| 2148 |
|
|
| 2149 |
|
p_section_list_pool->read_lock_count[index] = 0; |
| 2150 |
|
p_section_list_pool->write_lock_count[index] = 0; |
| 2151 |
|
|
| 2152 |
|
if (sem_init(&(p_section_list_pool->sem[index]), 1, 1) == -1) |
| 2153 |
|
{ |
| 2154 |
|
log_error("sem_init(sem[%d]) error (%d)", index, errno); |
| 2155 |
|
} |
| 2156 |
|
|
| 2157 |
|
if (index != BBS_max_section) |
| 2158 |
|
{ |
| 2159 |
|
if (sem_destroy(&(p_section_list_pool->sem[BBS_max_section])) == -1) |
| 2160 |
|
{ |
| 2161 |
|
log_error("sem_destroy(sem[%d]) error (%d)", BBS_max_section, errno); |
| 2162 |
|
} |
| 2163 |
|
|
| 2164 |
|
p_section_list_pool->read_lock_count[BBS_max_section] = 0; |
| 2165 |
|
p_section_list_pool->write_lock_count[BBS_max_section] = 0; |
| 2166 |
|
|
| 2167 |
|
if (sem_init(&(p_section_list_pool->sem[BBS_max_section]), 1, 1) == -1) |
| 2168 |
|
{ |
| 2169 |
|
log_error("sem_init(sem[%d]) error (%d)", BBS_max_section, errno); |
| 2170 |
|
} |
| 2171 |
|
} |
| 2172 |
|
|
| 2173 |
|
return 0; |
| 2174 |
|
} |
| 2175 |
|
#endif |