mtest6.c revision 1.1.1.3
1/* $NetBSD: mtest6.c,v 1.1.1.3 2018/02/06 01:53:08 christos Exp $ */ 2 3/* mtest6.c - memory-mapped database tester/toy */ 4/* 5 * Copyright 2011-2017 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#include <stdio.h> 19#include <stdlib.h> 20#include <string.h> 21#include <time.h> 22#include "lmdb.h" 23 24#define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr) 25#define RES(err, expr) ((rc = expr) == (err) || (CHECK(!rc, #expr), 0)) 26#define CHECK(test, msg) ((test) ? (void)0 : ((void)fprintf(stderr, \ 27 "%s:%d: %s: %s\n", __FILE__, __LINE__, msg, mdb_strerror(rc)), abort())) 28 29char dkbuf[1024]; 30 31int main(int argc,char * argv[]) 32{ 33 int i = 0, j = 0, rc; 34 MDB_env *env; 35 MDB_dbi dbi; 36 MDB_val key, data, sdata; 37 MDB_txn *txn; 38 MDB_stat mst; 39 MDB_cursor *cursor; 40 int count; 41 int *values; 42 long kval; 43 char *sval; 44 45 srand(time(NULL)); 46 47 E(mdb_env_create(&env)); 48 E(mdb_env_set_mapsize(env, 10485760)); 49 E(mdb_env_set_maxdbs(env, 4)); 50 E(mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664)); 51 52 E(mdb_txn_begin(env, NULL, 0, &txn)); 53 E(mdb_dbi_open(txn, "id6", MDB_CREATE|MDB_INTEGERKEY, &dbi)); 54 E(mdb_cursor_open(txn, dbi, &cursor)); 55 E(mdb_stat(txn, dbi, &mst)); 56 57 sval = calloc(1, mst.ms_psize / 4); 58 key.mv_size = sizeof(long); 59 key.mv_data = &kval; 60 sdata.mv_size = mst.ms_psize / 4 - 30; 61 sdata.mv_data = sval; 62 63 printf("Adding 12 values, should yield 3 splits\n"); 64 for (i=0;i<12;i++) { 65 kval = i*5; 66 sprintf(sval, "%08x", kval); 67 data = sdata; 68 (void)RES(MDB_KEYEXIST, 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+4; 73 sprintf(sval, "%08x", kval); 74 data = sdata; 75 (void)RES(MDB_KEYEXIST, mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE)); 76 } 77 printf("Adding 12 more values, should yield 3 splits\n"); 78 for (i=0;i<12;i++) { 79 kval = i*5+1; 80 sprintf(sval, "%08x", kval); 81 data = sdata; 82 (void)RES(MDB_KEYEXIST, mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE)); 83 } 84 E(mdb_cursor_get(cursor, &key, &data, MDB_FIRST)); 85 86 do { 87 printf("key: %p %s, data: %p %.*s\n", 88 key.mv_data, mdb_dkey(&key, dkbuf), 89 data.mv_data, (int) data.mv_size, (char *) data.mv_data); 90 } while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0); 91 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 92 mdb_cursor_close(cursor); 93 mdb_txn_commit(txn); 94 95#if 0 96 j=0; 97 98 for (i= count - 1; i > -1; i-= (rand()%5)) { 99 j++; 100 txn=NULL; 101 E(mdb_txn_begin(env, NULL, 0, &txn)); 102 sprintf(kval, "%03x", values[i & ~0x0f]); 103 sprintf(sval, "%03x %d foo bar", values[i], values[i]); 104 key.mv_size = sizeof(int); 105 key.mv_data = kval; 106 data.mv_size = sizeof(sval); 107 data.mv_data = sval; 108 if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, &data))) { 109 j--; 110 mdb_txn_abort(txn); 111 } else { 112 E(mdb_txn_commit(txn)); 113 } 114 } 115 free(values); 116 printf("Deleted %d values\n", j); 117 118 E(mdb_env_stat(env, &mst)); 119 E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn)); 120 E(mdb_cursor_open(txn, dbi, &cursor)); 121 printf("Cursor next\n"); 122 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { 123 printf("key: %.*s, data: %.*s\n", 124 (int) key.mv_size, (char *) key.mv_data, 125 (int) data.mv_size, (char *) data.mv_data); 126 } 127 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 128 printf("Cursor prev\n"); 129 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) { 130 printf("key: %.*s, data: %.*s\n", 131 (int) key.mv_size, (char *) key.mv_data, 132 (int) data.mv_size, (char *) data.mv_data); 133 } 134 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 135 mdb_cursor_close(cursor); 136 mdb_txn_abort(txn); 137 138 mdb_dbi_close(env, dbi); 139#endif 140 mdb_env_close(env); 141 142 return 0; 143} 144