1 /* $NetBSD: mtest6.c,v 1.1.1.1 2014/05/28 09:58:42 tron Exp $ */ 2 3 /* mtest6.c - memory-mapped database tester/toy */ 4 /* 5 * Copyright 2011 Howard Chu, Symas Corp. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted only as authorized by the OpenLDAP 10 * Public License. 11 * 12 * A copy of this license is available in the file LICENSE in the 13 * top-level directory of the distribution or, alternatively, at 14 * <http://www.OpenLDAP.org/license.html>. 15 */ 16 17 /* Tests for DB splits and merges */ 18 #define _XOPEN_SOURCE 500 /* srandom(), random() */ 19 #include <stdio.h> 20 #include <stdlib.h> 21 #include <string.h> 22 #include <time.h> 23 #include "lmdb.h" 24 25 char dkbuf[1024]; 26 27 int main(int argc,char * argv[]) 28 { 29 int i = 0, j = 0, rc; 30 MDB_env *env; 31 MDB_dbi dbi; 32 MDB_val key, data; 33 MDB_txn *txn; 34 MDB_stat mst; 35 MDB_cursor *cursor; 36 int count; 37 int *values; 38 long kval; 39 char *sval; 40 41 srandom(time(NULL)); 42 43 rc = mdb_env_create(&env); 44 rc = mdb_env_set_mapsize(env, 10485760); 45 rc = mdb_env_set_maxdbs(env, 4); 46 rc = mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664); 47 rc = mdb_txn_begin(env, NULL, 0, &txn); 48 rc = mdb_open(txn, "id2", MDB_CREATE|MDB_INTEGERKEY, &dbi); 49 rc = mdb_cursor_open(txn, dbi, &cursor); 50 rc = mdb_stat(txn, dbi, &mst); 51 52 sval = calloc(1, mst.ms_psize / 4); 53 key.mv_size = sizeof(long); 54 key.mv_data = &kval; 55 data.mv_size = mst.ms_psize / 4 - 30; 56 data.mv_data = sval; 57 58 printf("Adding 12 values, should yield 3 splits\n"); 59 for (i=0;i<12;i++) { 60 kval = i*5; 61 sprintf(sval, "%08x", kval); 62 rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE); 63 } 64 printf("Adding 12 more values, should yield 3 splits\n"); 65 for (i=0;i<12;i++) { 66 kval = i*5+4; 67 sprintf(sval, "%08x", kval); 68 rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE); 69 } 70 printf("Adding 12 more values, should yield 3 splits\n"); 71 for (i=0;i<12;i++) { 72 kval = i*5+1; 73 sprintf(sval, "%08x", kval); 74 rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE); 75 } 76 rc = mdb_cursor_get(cursor, &key, &data, MDB_FIRST); 77 78 do { 79 printf("key: %p %s, data: %p %.*s\n", 80 key.mv_data, mdb_dkey(&key, dkbuf), 81 data.mv_data, (int) data.mv_size, (char *) data.mv_data); 82 } while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0); 83 mdb_cursor_close(cursor); 84 mdb_txn_commit(txn); 85 86 #if 0 87 j=0; 88 89 for (i= count - 1; i > -1; i-= (random()%5)) { 90 j++; 91 txn=NULL; 92 rc = mdb_txn_begin(env, NULL, 0, &txn); 93 sprintf(kval, "%03x", values[i & ~0x0f]); 94 sprintf(sval, "%03x %d foo bar", values[i], values[i]); 95 key.mv_size = sizeof(int); 96 key.mv_data = kval; 97 data.mv_size = sizeof(sval); 98 data.mv_data = sval; 99 rc = mdb_del(txn, dbi, &key, &data); 100 if (rc) { 101 j--; 102 mdb_txn_abort(txn); 103 } else { 104 rc = mdb_txn_commit(txn); 105 } 106 } 107 free(values); 108 printf("Deleted %d values\n", j); 109 110 rc = mdb_env_stat(env, &mst); 111 rc = mdb_txn_begin(env, NULL, 1, &txn); 112 rc = mdb_cursor_open(txn, dbi, &cursor); 113 printf("Cursor next\n"); 114 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { 115 printf("key: %.*s, data: %.*s\n", 116 (int) key.mv_size, (char *) key.mv_data, 117 (int) data.mv_size, (char *) data.mv_data); 118 } 119 printf("Cursor prev\n"); 120 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) { 121 printf("key: %.*s, data: %.*s\n", 122 (int) key.mv_size, (char *) key.mv_data, 123 (int) data.mv_size, (char *) data.mv_data); 124 } 125 mdb_cursor_close(cursor); 126 mdb_close(txn, dbi); 127 128 mdb_txn_abort(txn); 129 #endif 130 mdb_env_close(env); 131 132 return 0; 133 } 134