mtest5.c (3793B)
1 /* mtest5.c - memory-mapped database tester/toy */ 2 /* 3 * Copyright 2011-2021 Howard Chu, Symas Corp. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted only as authorized by the OpenLDAP 8 * Public License. 9 * 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>. 13 */ 14 15 /* Tests for sorted duplicate DBs using cursor_put */ 16 #include <stdio.h> 17 #include <stdlib.h> 18 #include <string.h> 19 #include <time.h> 20 #include "lmdb.h" 21 22 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr) 23 #define RES(err, expr) ((rc = expr) == (err) || (CHECK(!rc, #expr), 0)) 24 #define CHECK(test, msg) ((test) ? (void)0 : ((void)fprintf(stderr, \ 25 "%s:%d: %s: %s\n", __FILE__, __LINE__, msg, mdb_strerror(rc)), abort())) 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 char sval[32]; 39 char kval[sizeof(int)]; 40 41 srand(time(NULL)); 42 43 memset(sval, 0, sizeof(sval)); 44 45 count = (rand()%384) + 64; 46 values = (int *)malloc(count*sizeof(int)); 47 48 for(i = 0;i<count;i++) { 49 values[i] = rand()%1024; 50 } 51 52 E(mdb_env_create(&env)); 53 E(mdb_env_set_mapsize(env, 10485760)); 54 E(mdb_env_set_maxdbs(env, 4)); 55 E(mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664)); 56 57 E(mdb_txn_begin(env, NULL, 0, &txn)); 58 E(mdb_dbi_open(txn, "id2", MDB_CREATE|MDB_DUPSORT, &dbi)); 59 E(mdb_cursor_open(txn, dbi, &cursor)); 60 61 key.mv_size = sizeof(int); 62 key.mv_data = kval; 63 data.mv_size = sizeof(sval); 64 data.mv_data = sval; 65 66 printf("Adding %d values\n", count); 67 for (i=0;i<count;i++) { 68 if (!(i & 0x0f)) 69 sprintf(kval, "%03x", values[i]); 70 sprintf(sval, "%03x %d foo bar", values[i], values[i]); 71 if (RES(MDB_KEYEXIST, mdb_cursor_put(cursor, &key, &data, MDB_NODUPDATA))) 72 j++; 73 } 74 if (j) printf("%d duplicates skipped\n", j); 75 mdb_cursor_close(cursor); 76 E(mdb_txn_commit(txn)); 77 E(mdb_env_stat(env, &mst)); 78 79 E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn)); 80 E(mdb_cursor_open(txn, dbi, &cursor)); 81 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { 82 printf("key: %p %.*s, data: %p %.*s\n", 83 key.mv_data, (int) key.mv_size, (char *) key.mv_data, 84 data.mv_data, (int) data.mv_size, (char *) data.mv_data); 85 } 86 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 87 mdb_cursor_close(cursor); 88 mdb_txn_abort(txn); 89 90 j=0; 91 92 for (i= count - 1; i > -1; i-= (rand()%5)) { 93 j++; 94 txn=NULL; 95 E(mdb_txn_begin(env, NULL, 0, &txn)); 96 sprintf(kval, "%03x", values[i & ~0x0f]); 97 sprintf(sval, "%03x %d foo bar", values[i], values[i]); 98 key.mv_size = sizeof(int); 99 key.mv_data = kval; 100 data.mv_size = sizeof(sval); 101 data.mv_data = sval; 102 if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, &data))) { 103 j--; 104 mdb_txn_abort(txn); 105 } else { 106 E(mdb_txn_commit(txn)); 107 } 108 } 109 free(values); 110 printf("Deleted %d values\n", j); 111 112 E(mdb_env_stat(env, &mst)); 113 E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn)); 114 E(mdb_cursor_open(txn, dbi, &cursor)); 115 printf("Cursor next\n"); 116 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { 117 printf("key: %.*s, data: %.*s\n", 118 (int) key.mv_size, (char *) key.mv_data, 119 (int) data.mv_size, (char *) data.mv_data); 120 } 121 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 122 printf("Cursor prev\n"); 123 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) { 124 printf("key: %.*s, data: %.*s\n", 125 (int) key.mv_size, (char *) key.mv_data, 126 (int) data.mv_size, (char *) data.mv_data); 127 } 128 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); 129 mdb_cursor_close(cursor); 130 mdb_txn_abort(txn); 131 132 mdb_dbi_close(env, dbi); 133 mdb_env_close(env); 134 return 0; 135 }