/* * Copyright (c) 2015,2016 Leonid Yuriev <leo@yuriev.ru>. * Copyright (c) 2015,2016 Peter-Service R&D LLC. * * This file is part of ReOpenMDBX. * * ReOpenMDBX is free software; you can redistribute it and/or modify it under * the terms of the GNU Affero General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * ReOpenMDBX is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ /* Based on mtest2.c - memory-mapped database tester/toy */ #include <stdio.h> #include <stdlib.h> #include <time.h> #include <unistd.h> #include <errno.h> #include <sys/stat.h> #include "mdbx.h" #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr) #define RES(err, expr) ((rc = expr) == (err) || (CHECK(!rc, #expr), 0)) #define CHECK(test, msg) ((test) ? (void)0 : ((void)fprintf(stderr, \ "%s:%d: %s: %s\n", __FILE__, __LINE__, msg, mdb_strerror(rc)), abort())) #ifndef DBPATH # define DBPATH "./testdb" #endif int main(int argc,char * argv[]) { int i = 0, j = 0, rc; MDB_env *env; MDB_dbi dbi; MDB_val key, data; MDB_txn *txn; MDB_stat mst; MDB_cursor *cursor; int count; int *values; char sval[32] = ""; int env_oflags; struct stat db_stat, exe_stat; (void) argc; (void) argv; srand(time(NULL)); count = (rand()%384) + 64; values = (int *)malloc(count*sizeof(int)); for(i = 0;i<count;i++) { values[i] = rand()%1024; } E(mdb_env_create(&env)); E(mdb_env_set_maxreaders(env, 1)); E(mdb_env_set_mapsize(env, 10485760)); E(mdb_env_set_maxdbs(env, 4)); E(stat("/proc/self/exe", &exe_stat)?errno:0); E(stat(DBPATH "/.", &db_stat)?errno:0); env_oflags = MDB_FIXEDMAP | MDB_NOSYNC; if (major(db_stat.st_dev) != major(exe_stat.st_dev)) { /* LY: Assume running inside a CI-environment: * 1) don't use FIXEDMAP to avoid EBUSY in case collision, * which could be inspired by address space randomisation feature. * 2) drop MDB_NOSYNC expecting that DBPATH is at a tmpfs or some dedicated storage. */ env_oflags = 0; } /* LY: especially here we always needs MDB_NOSYNC * for testing mdb_env_close_ex() and "redo-to-steady" on open. */ env_oflags |= MDB_NOSYNC; E(mdb_env_open(env, DBPATH, env_oflags, 0664)); E(mdb_txn_begin(env, NULL, 0, &txn)); if (mdb_dbi_open(txn, "id1", MDB_CREATE, &dbi) == MDB_SUCCESS) E(mdb_drop(txn, dbi, 1)); E(mdb_dbi_open(txn, "id1", MDB_CREATE, &dbi)); key.mv_size = sizeof(int); key.mv_data = sval; data.mv_size = sizeof(sval); data.mv_data = sval; printf("Adding %d values\n", count); for (i=0;i<count;i++) { sprintf(sval, "%03x %d foo bar", values[i], values[i]); if (RES(MDB_KEYEXIST, mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE))) j++; } if (j) printf("%d duplicates skipped\n", j); E(mdb_txn_commit(txn)); E(mdb_env_stat(env, &mst)); printf("check-preset-a\n"); E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn)); E(mdb_cursor_open(txn, dbi, &cursor)); int present_a = 0; while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { printf("key: %p %.*s, data: %p %.*s\n", key.mv_data, (int) key.mv_size, (char *) key.mv_data, data.mv_data, (int) data.mv_size, (char *) data.mv_data); ++present_a; } CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); CHECK(present_a == count - j, "mismatch"); mdb_cursor_close(cursor); mdb_txn_abort(txn); mdb_env_sync(env, 1); int deleted = 0; key.mv_data = sval; for (i = count - 1; i > -1; i -= (rand()%5)) { txn=NULL; E(mdb_txn_begin(env, NULL, 0, &txn)); sprintf(sval, "%03x ", values[i]); if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, NULL))) { mdb_txn_abort(txn); } else { E(mdb_txn_commit(txn)); deleted++; } } free(values); printf("Deleted %d values\n", deleted); printf("check-preset-b.cursor-next\n"); E(mdb_env_stat(env, &mst)); E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn)); E(mdb_cursor_open(txn, dbi, &cursor)); int present_b = 0; while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { printf("key: %.*s, data: %.*s\n", (int) key.mv_size, (char *) key.mv_data, (int) data.mv_size, (char *) data.mv_data); ++present_b; } CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); CHECK(present_b == present_a - deleted, "mismatch"); printf("check-preset-b.cursor-prev\n"); j = 1; while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) { printf("key: %.*s, data: %.*s\n", (int) key.mv_size, (char *) key.mv_data, (int) data.mv_size, (char *) data.mv_data); ++j; } CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); CHECK(present_b == j, "mismatch"); mdb_cursor_close(cursor); mdb_txn_abort(txn); mdb_dbi_close(env, dbi); /********************* LY: kept DB dirty ****************/ mdb_env_close_ex(env, 1); E(mdb_env_create(&env)); E(mdb_env_set_maxdbs(env, 4)); E(mdb_env_open(env, DBPATH, env_oflags, 0664)); printf("check-preset-c.cursor-next\n"); E(mdb_env_stat(env, &mst)); E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn)); E(mdb_dbi_open(txn, "id1", 0, &dbi)); E(mdb_cursor_open(txn, dbi, &cursor)); int present_c = 0; while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { printf("key: %.*s, data: %.*s\n", (int) key.mv_size, (char *) key.mv_data, (int) data.mv_size, (char *) data.mv_data); ++present_c; } CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); printf("Rolled back %d deletion(s)\n", present_c - (present_a - deleted)); CHECK(present_c > present_a - deleted, "mismatch"); printf("check-preset-d.cursor-prev\n"); j = 1; while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) { printf("key: %.*s, data: %.*s\n", (int) key.mv_size, (char *) key.mv_data, (int) data.mv_size, (char *) data.mv_data); ++j; } CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get"); CHECK(present_c == j, "mismatch"); mdb_cursor_close(cursor); mdb_txn_abort(txn); mdb_dbi_close(env, dbi); mdb_env_close_ex(env, 0); return 0; }