/* mdb_stat.c - memory-mapped database status tool */ /* * Copyright 2011 Howard Chu, Symas Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted only as authorized by the OpenLDAP * Public License. * * A copy of this license is available in the file LICENSE in the * top-level directory of the distribution or, alternatively, at * . */ #include #include #include #include "mdb.h" int main(int argc,char * argv[]) { int rc; MDB_env *env; MDB_txn *txn; MDB_dbi dbi; MDB_stat mst; MDB_cursor *cursor; MDB_val key; char *envname = argv[1]; rc = mdb_env_create(&env); mdb_env_set_maxdbs(env, 4); rc = mdb_env_open(env, envname, MDB_RDONLY, 0); if (rc) { printf("mdb_env_open failed, error %d\n", rc); exit(1); } rc = mdb_txn_begin(env, NULL, 1, &txn); if (rc) { printf("mdb_txn_begin failed, error %d\n", rc); exit(1); } rc = mdb_open(txn, NULL, 0, &dbi); if (rc) { printf("mdb_open failed, error %d\n", rc); mdb_txn_abort(txn); exit(1); } rc = mdb_stat(txn, dbi, &mst); printf("Page size: %u\n", mst.ms_psize); printf("Tree depth: %u\n", mst.ms_depth); printf("Branch pages: %zu\n", mst.ms_branch_pages); printf("Leaf pages: %zu\n", mst.ms_leaf_pages); printf("Overflow pages: %zu\n", mst.ms_overflow_pages); printf("Entries: %zu\n", mst.ms_entries); rc = mdb_cursor_open(txn, dbi, &cursor); while ((rc = mdb_cursor_get(cursor, &key, NULL, MDB_NEXT)) == 0) { char *str = malloc(key.mv_size+1); MDB_dbi db2; memcpy(str, key.mv_data, key.mv_size); str[key.mv_size] = '\0'; printf("\n%s\n", str); rc = mdb_open(txn, str, 0, &db2); if (rc) break; free(str); rc = mdb_stat(txn, db2, &mst); printf("Tree depth: %u\n", mst.ms_depth); printf("Branch pages: %zu\n", mst.ms_branch_pages); printf("Leaf pages: %zu\n", mst.ms_leaf_pages); printf("Overflow pages: %zu\n", mst.ms_overflow_pages); printf("Entries: %zu\n", mst.ms_entries); mdb_close(env, db2); } mdb_cursor_close(cursor); mdb_close(env, dbi); mdb_txn_abort(txn); mdb_env_close(env); return 0; }