1 /* mdb_stat.c - memory-mapped database status tool */
3 * Copyright 2011-2016 Howard Chu, Symas Corp.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted only as authorized by the OpenLDAP
10 * A copy of this license is available in the file LICENSE in the
11 * top-level directory of the distribution or, alternatively, at
12 * <http://www.OpenLDAP.org/license.html>.
23 static void prstat(MDB_stat *ms)
26 printf(" Page size: %u\n", ms->ms_psize);
28 printf(" Tree depth: %u\n", ms->ms_depth);
29 printf(" Branch pages: %"Y"u\n", ms->ms_branch_pages);
30 printf(" Leaf pages: %"Y"u\n", ms->ms_leaf_pages);
31 printf(" Overflow pages: %"Y"u\n", ms->ms_overflow_pages);
32 printf(" Entries: %"Y"u\n", ms->ms_entries);
35 static void usage(char *prog)
37 fprintf(stderr, "usage: %s [-V] [-n] [-e] [-r[r]] [-f[f[f]]] [-a|-s subdb] dbpath\n", prog);
41 int main(int argc, char *argv[])
52 int alldbs = 0, envinfo = 0, envflags = 0, freinfo = 0, rdrinfo = 0;
58 /* -a: print stat of main DB and all subDBs
59 * -s: print stat of only the named subDB
61 * -f: print freelist info
62 * -r: print reader info
63 * -n: use NOSUBDIR flag on env_open
64 * -V: print version and exit
65 * (default) print stat of only the main DB
67 while ((i = getopt(argc, argv, "Vaefnrs:")) != EOF) {
70 printf("%s\n", MDB_VERSION_STRING);
85 envflags |= MDB_NOSUBDIR;
100 if (optind != argc - 1)
103 envname = argv[optind];
104 rc = mdb_env_create(&env);
106 fprintf(stderr, "mdb_env_create failed, error %d %s\n", rc, mdb_strerror(rc));
110 if (alldbs || subname) {
111 mdb_env_set_maxdbs(env, 4);
114 rc = mdb_env_open(env, envname, envflags | MDB_RDONLY, 0664);
116 fprintf(stderr, "mdb_env_open failed, error %d %s\n", rc, mdb_strerror(rc));
121 (void)mdb_env_stat(env, &mst);
122 (void)mdb_env_info(env, &mei);
123 printf("Environment Info\n");
124 printf(" Map address: %p\n", mei.me_mapaddr);
125 printf(" Map size: %"Y"u\n", mei.me_mapsize);
126 printf(" Page size: %u\n", mst.ms_psize);
127 printf(" Max pages: %"Y"u\n", mei.me_mapsize / mst.ms_psize);
128 printf(" Number of pages used: %"Y"u\n", mei.me_last_pgno+1);
129 printf(" Last transaction ID: %"Y"u\n", mei.me_last_txnid);
130 printf(" Max readers: %u\n", mei.me_maxreaders);
131 printf(" Number of readers used: %u\n", mei.me_numreaders);
135 printf("Reader Table Status\n");
136 rc = mdb_reader_list(env, (MDB_msg_func *)fputs, stdout);
139 mdb_reader_check(env, &dead);
140 printf(" %d stale readers cleared.\n", dead);
141 rc = mdb_reader_list(env, (MDB_msg_func *)fputs, stdout);
143 if (!(subname || alldbs || freinfo))
147 rc = mdb_txn_begin(env, NULL, MDB_RDONLY, &txn);
149 fprintf(stderr, "mdb_txn_begin failed, error %d %s\n", rc, mdb_strerror(rc));
156 size_t pages = 0, *iptr;
158 printf("Freelist Status\n");
160 rc = mdb_cursor_open(txn, dbi, &cursor);
162 fprintf(stderr, "mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc));
165 rc = mdb_stat(txn, dbi, &mst);
167 fprintf(stderr, "mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc));
171 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
177 ssize_t i, j, span = 0;
179 for (i = j, prev = 1; --i >= 0; ) {
182 bad = " [bad sequence]";
185 for (; i >= span && iptr[i-span] == pg; span++, pg++) ;
187 printf(" Transaction %"Z"u, %"Z"d pages, maxspan %"Z"d%s\n",
188 *(size_t *)key.mv_data, j, span, bad);
190 for (--j; j >= 0; ) {
192 for (span=1; --j >= 0 && iptr[j] == pg+span; span++) ;
193 printf(span>1 ? " %9"Z"u[%"Z"d]\n" : " %9"Z"u\n",
199 mdb_cursor_close(cursor);
200 printf(" Free pages: %"Z"u\n", pages);
203 rc = mdb_open(txn, subname, 0, &dbi);
205 fprintf(stderr, "mdb_open failed, error %d %s\n", rc, mdb_strerror(rc));
209 rc = mdb_stat(txn, dbi, &mst);
211 fprintf(stderr, "mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc));
214 printf("Status of %s\n", subname ? subname : "Main DB");
221 rc = mdb_cursor_open(txn, dbi, &cursor);
223 fprintf(stderr, "mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc));
226 while ((rc = mdb_cursor_get(cursor, &key, NULL, MDB_NEXT_NODUP)) == 0) {
229 if (memchr(key.mv_data, '\0', key.mv_size))
231 str = malloc(key.mv_size+1);
232 memcpy(str, key.mv_data, key.mv_size);
233 str[key.mv_size] = '\0';
234 rc = mdb_open(txn, str, 0, &db2);
235 if (rc == MDB_SUCCESS)
236 printf("Status of %s\n", str);
239 rc = mdb_stat(txn, db2, &mst);
241 fprintf(stderr, "mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc));
247 mdb_cursor_close(cursor);
250 if (rc == MDB_NOTFOUND)
259 return rc ? EXIT_FAILURE : EXIT_SUCCESS;