/[LeafOK_CVS]/lbbs/src/file_loader.c
ViewVC logotype

Diff of /lbbs/src/file_loader.c

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

Revision 1.4 by sysadm, Sat May 17 05:59:14 2025 UTC Revision 1.11 by sysadm, Sun May 25 06:48:31 2025 UTC
# Line 31  Line 31 
31    
32  #define MAX_SPLIT_FILE_LINES 65536  #define MAX_SPLIT_FILE_LINES 65536
33    
34    struct shm_header_t
35    {
36            int shmid;
37            size_t data_len;
38            long line_total;
39    };
40    
41  static TRIE_NODE *p_trie_file_dict = NULL;  static TRIE_NODE *p_trie_file_dict = NULL;
42    
43  int file_loader_init()  int file_loader_init()
# Line 51  int file_loader_init() Line 58  int file_loader_init()
58          return 0;          return 0;
59  }  }
60    
61  static void trie_file_dict_cleanup_cb(const char *filename, int64_t shmid)  static void trie_file_dict_cleanup_cb(const char *filename, int64_t value)
62  {  {
63          if (shmctl((int)shmid, IPC_RMID, NULL) == -1)          int shmid = (int)value;
64    
65            if (shmctl(shmid, IPC_RMID, NULL) == -1)
66          {          {
67                  log_error("shmctl(shmid=%d, IPC_RMID) error (%d)\n", (int)shmid, errno);                  log_error("shmctl(shmid=%d, IPC_RMID) error (%d)\n", shmid, errno);
68          }          }
69  }  }
70    
# Line 68  void file_loader_cleanup(void) Line 77  void file_loader_cleanup(void)
77    
78          trie_dict_traverse(p_trie_file_dict, trie_file_dict_cleanup_cb);          trie_dict_traverse(p_trie_file_dict, trie_file_dict_cleanup_cb);
79          trie_dict_destroy(p_trie_file_dict);          trie_dict_destroy(p_trie_file_dict);
80    
81          p_trie_file_dict = NULL;          p_trie_file_dict = NULL;
82  }  }
83    
84  int load_file_shm(const char *filename)  int load_file(const char *filename)
85  {  {
86          int fd;          int fd;
87          struct stat sb;          struct stat sb;
# Line 81  int load_file_shm(const char *filename) Line 91  int load_file_shm(const char *filename)
91          key_t key;          key_t key;
92          size_t size;          size_t size;
93          int shmid;          int shmid;
         int64_t shmid_old;  
94          void *p_shm;          void *p_shm;
95          long line_total;          long line_total;
96          long line_offsets[MAX_SPLIT_FILE_LINES];          long line_offsets[MAX_SPLIT_FILE_LINES];
97          long *p_line_offsets;          long *p_line_offsets;
98            int64_t shmid_old;
99    
100          if ((fd = open(filename, O_RDONLY)) < 0)          if ((fd = open(filename, O_RDONLY)) < 0)
101          {          {
# Line 128  int load_file_shm(const char *filename) Line 138  int load_file_shm(const char *filename)
138                  return -2;                  return -2;
139          }          }
140    
141          size = sizeof(data_len) + sizeof(line_total) + data_len + 1 + sizeof(long) * (size_t)(line_total + 1);          size = sizeof(struct shm_header_t) + data_len + 1 + sizeof(long) * (size_t)(line_total + 1);
142          shmid = shmget(key, size, IPC_CREAT | IPC_EXCL | 0600);          shmid = shmget(key, size, IPC_CREAT | IPC_EXCL | 0600);
143          if (shmid == -1)          if (shmid == -1)
144          {          {
# Line 138  int load_file_shm(const char *filename) Line 148  int load_file_shm(const char *filename)
148          p_shm = shmat(shmid, NULL, 0);          p_shm = shmat(shmid, NULL, 0);
149          if (p_shm == (void *)-1)          if (p_shm == (void *)-1)
150          {          {
151                  log_error("shmat() error (%d)\n", errno);                  log_error("shmat(shmid=%d) error (%d)\n", shmid, errno);
152                  return -3;                  return -3;
153          }          }
154    
155          *((size_t *)p_shm) = data_len;          ((struct shm_header_t *)p_shm)->shmid = shmid;
156          *((long *)(p_shm + sizeof(data_len))) = line_total;          ((struct shm_header_t *)p_shm)->data_len = data_len;
157          memcpy(p_shm + sizeof(data_len) + sizeof(line_total), p_data, data_len);          ((struct shm_header_t *)p_shm)->line_total = line_total;
158            memcpy(p_shm + sizeof(struct shm_header_t), p_data, data_len);
159    
160          if (munmap(p_data, data_len) < 0)          if (munmap(p_data, data_len) < 0)
161          {          {
# Line 152  int load_file_shm(const char *filename) Line 163  int load_file_shm(const char *filename)
163                  return -2;                  return -2;
164          }          }
165    
166          p_data = p_shm + sizeof(data_len) + sizeof(line_total);          p_data = p_shm + sizeof(struct shm_header_t);
167          p_line_offsets = p_data + data_len + 1;          p_line_offsets = p_data + data_len + 1;
168          memcpy(p_line_offsets, line_offsets, sizeof(long) * (size_t)(line_total + 1));          memcpy(p_line_offsets, line_offsets, sizeof(long) * (size_t)(line_total + 1));
169    
170          if (shmdt(p_shm) == -1)          if (shmdt(p_shm) == -1)
171          {          {
172                  log_error("shmdt() error (%d)\n", errno);                  log_error("shmdt(shmid=%d) error (%d)\n", shmid, errno);
173                  return -3;                  return -3;
174          }          }
175    
# Line 186  int load_file_shm(const char *filename) Line 197  int load_file_shm(const char *filename)
197          return 0;          return 0;
198  }  }
199    
200  int unload_file_shm(const char *filename)  int unload_file(const char *filename)
201  {  {
202          int64_t shmid = 0;          int64_t shmid;
203    
204          if (trie_dict_get(p_trie_file_dict, filename, (int64_t *)&shmid) != 1)          if (trie_dict_get(p_trie_file_dict, filename, &shmid) != 1)
205          {          {
206                  log_error("trie_dict_get(%s) not found\n", filename);                  log_error("trie_dict_get(%s) not found\n", filename);
207                  return -1;                  return -1;
# Line 210  int unload_file_shm(const char *filename Line 221  int unload_file_shm(const char *filename
221          return 0;          return 0;
222  }  }
223    
224  const void *get_file_shm(const char *filename)  const void *get_file_shm_readonly(const char *filename, size_t *p_data_len, long *p_line_total, const void **pp_data, const long **pp_line_offsets)
225  {  {
226          int64_t shmid;          int64_t shmid;
227          const void *p_shm;          const void *p_shm;
# Line 230  const void *get_file_shm(const char *fil Line 241  const void *get_file_shm(const char *fil
241          p_shm = shmat((int)shmid, NULL, SHM_RDONLY);          p_shm = shmat((int)shmid, NULL, SHM_RDONLY);
242          if (p_shm == (void *)-1)          if (p_shm == (void *)-1)
243          {          {
244                  log_error("shmat() error (%d)\n", errno);                  log_error("shmat(shmid=%d) error (%d)\n", (int)shmid, errno);
245                  return NULL;                  return NULL;
246          }          }
247    
248            *p_data_len = ((struct shm_header_t *)p_shm)->data_len;
249            *p_line_total = ((struct shm_header_t *)p_shm)->line_total;
250            *pp_data = p_shm + sizeof(struct shm_header_t);
251            *pp_line_offsets = *pp_data + *p_data_len + 1;
252    
253          return p_shm;          return p_shm;
254  }  }
255    
256    int detach_file_shm(const void *p_shm)
257    {
258            if (p_shm == NULL)
259            {
260                    return -2;
261            }
262    
263            if (shmdt(p_shm) == -1)
264            {
265                    log_error("shmdt() error (%d)\n", errno);
266                    return -1;
267            }
268    
269            return 0;
270    }

Legend:
Removed lines/characters  
Changed lines/characters
  Added lines/characters
webmaster@leafok.com
 ViewVC Help
Powered by ViewVC 1.3.0-beta1