mtest5.c revision 1.1.1.4
1/* $NetBSD: mtest5.c,v 1.1.1.4 2019/08/08 13:31:13 christos Exp $ */ 2 3/* mtest5.c - memory-mapped database tester/toy */ 4/* 5 * Copyright 2011-2018 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 sorted duplicate DBs using cursor_put */ 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 29int main(int argc,char * argv[]) 30{ 31 int i = 0, j = 0, rc; 32 MDB_env *env; 33 MDB_dbi dbi; 34 MDB_val key, data; 35 MDB_txn *txn; 36 MDB_stat mst; 37 MDB_cursor *cursor; 38 int count; 39 int *values; 40 char sval[32]; 41 char kval[sizeof(int)]; 42 43 srand(time(NULL)); 44 45 memset(sval, 0, sizeof(sval)); 46 47 count = (rand()%384) + 64; 48 values = (int *)malloc(count*sizeof(int)); 49 50 for(i = 0;i<count;i++) { 51 values[i] = rand()%1024; 52 } 53 54 E(mdb_env_create(&env)); 55 E(mdb_env_set_mapsize(env, 10485760)); 56 E(mdb_env_set_maxdbs(env, 4)); 57 E(mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664)); 58 59 E(mdb_txn_begin(env, NULL, 0, &txn)); 60 E(mdb_dbi_open(txn, "id2", MDB_CREATE|MDB_DUPSORT, &dbi)); 61 E(mdb_cursor_open(txn, dbi, &cursor)); 62 63 key.mv_size = sizeof(int); 64 key.mv_data = kval; 65 data.mv_size = sizeof(sval); 66 data.mv_data = sval; 67 68 printf("Adding %d values\n", count); 69 for (i=0;i<count;i++) { 70 if (!(i & 0x0f)) 71 sprintf(kval, "%03x", values[i]); 72 sprintf(sval, "%03x %d foo bar", values[i], values[i]); 73 if (RES(MDB_KEYEXIST, mdb_cursor_put(cursor, &key, &data, MDB_NODUPDATA))) 74 j++; 75 } 76 if (j) printf("%d duplicates skipped\n", j); 77 mdb_cursor_close(cursor); 78 E(mdb_txn_commit(txn)); 79 E(mdb_env_stat(env, &mst)); 80 81 E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn)); 82 E(mdb_cursor_open(txn, dbi, &cursor)); 83 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { 84 printf("key: %p %.*s, data: %p %.*s\n", 85 key.mv_data, (int) key.mv_size, (char *) key.mv_data, 86 data.mv_data, (int) data.mv_size, (char *) data.mv_data); 87 } 88 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 89 mdb_cursor_close(cursor); 90 mdb_txn_abort(txn); 91 92 j=0; 93 94 for (i= count - 1; i > -1; i-= (rand()%5)) { 95 j++; 96 txn=NULL; 97 E(mdb_txn_begin(env, NULL, 0, &txn)); 98 sprintf(kval, "%03x", values[i & ~0x0f]); 99 sprintf(sval, "%03x %d foo bar", values[i], values[i]); 100 key.mv_size = sizeof(int); 101 key.mv_data = kval; 102 data.mv_size = sizeof(sval); 103 data.mv_data = sval; 104 if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, &data))) { 105 j--; 106 mdb_txn_abort(txn); 107 } else { 108 E(mdb_txn_commit(txn)); 109 } 110 } 111 free(values); 112 printf("Deleted %d values\n", j); 113 114 E(mdb_env_stat(env, &mst)); 115 E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn)); 116 E(mdb_cursor_open(txn, dbi, &cursor)); 117 printf("Cursor next\n"); 118 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { 119 printf("key: %.*s, data: %.*s\n", 120 (int) key.mv_size, (char *) key.mv_data, 121 (int) data.mv_size, (char *) data.mv_data); 122 } 123 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 124 printf("Cursor prev\n"); 125 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) { 126 printf("key: %.*s, data: %.*s\n", 127 (int) key.mv_size, (char *) key.mv_data, 128 (int) data.mv_size, (char *) data.mv_data); 129 } 130 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 131 mdb_cursor_close(cursor); 132 mdb_txn_abort(txn); 133 134 mdb_dbi_close(env, dbi); 135 mdb_env_close(env); 136 return 0; 137} 138