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Defines | Functions
mtest.c File Reference
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "mdb.h"

Go to the source code of this file.

Defines

#define _XOPEN_SOURCE   500 /* srandom(), random() */

Functions

int main (int argc, char *argv[])

Define Documentation

#define _XOPEN_SOURCE   500 /* srandom(), random() */

Definition at line 14 of file mtest.c.


Function Documentation

int main ( int  argc,
char *  argv[] 
)

Definition at line 20 of file mtest.c.

{
       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];

       srandom(time(NULL));

           count = (random()%384) + 64;
           values = (int *)malloc(count*sizeof(int));

           for(i = 0;i<count;i++) {
                     values[i] = random()%1024;
           }
    
              rc = mdb_env_create(&env);
              rc = mdb_env_set_mapsize(env, 10485760);
              rc = mdb_env_open(env, "./testdb", MDB_FIXEDMAP /*|MDB_NOSYNC*/, 0664);
              rc = mdb_txn_begin(env, NULL, 0, &txn);
              rc = mdb_open(txn, NULL, 0, &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]);
                     rc = mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE);
                     if (rc) j++;
           }
              if (j) printf("%d duplicates skipped\n", j);
              rc = mdb_txn_commit(txn);
              rc = mdb_env_stat(env, &mst);

              rc = mdb_txn_begin(env, NULL, 1, &txn);
              rc = mdb_cursor_open(txn, dbi, &cursor);
              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);
              }
              mdb_cursor_close(cursor);
              mdb_txn_abort(txn);

              j=0;
              key.mv_data = sval;
           for (i= count - 1; i > -1; i-= (random()%5)) {      
                     j++;
                     txn=NULL;
                     rc = mdb_txn_begin(env, NULL, 0, &txn);
                     sprintf(sval, "%03x ", values[i]);
                     rc = mdb_del(txn, dbi, &key, NULL);
                     if (rc) {
                            j--;
                            mdb_txn_abort(txn);
                     } else {
                            rc = mdb_txn_commit(txn);
                     }
           }
           free(values);
              printf("Deleted %d values\n", j);

              rc = mdb_env_stat(env, &mst);
              rc = mdb_txn_begin(env, NULL, 1, &txn);
              rc = mdb_cursor_open(txn, dbi, &cursor);
              printf("Cursor next\n");
              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);
              }
              printf("Cursor prev\n");
              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);
              }
#if 0
              /* write ops aren't coordinated with cursors,
               * this stuff all breaks
               */
              printf("Deleting with cursor\n");
              rc = mdb_txn_begin(env, NULL, 0, &txn);
              rc = mdb_cursor_open(db, txn, &cur2);
              for (i=0; i<50; i++) {
                     rc = mdb_cursor_get(cur2, &key, &data, MDB_NEXT);
                     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);
                     rc = mdb_del(db, txn, &key, NULL);
              }

              printf("Restarting cursor in txn\n");
              rc = mdb_cursor_get(cur2, &key, &data, MDB_FIRST);
              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);
              for (i=0; i<32; i++) {
                     rc = mdb_cursor_get(cur2, &key, &data, MDB_NEXT);
                     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);
              }
              mdb_cursor_close(cur2);
              rc = mdb_txn_commit(txn);
              mdb_cursor_close(cursor);
              printf("Restarting cursor outside txn\n");
              rc = mdb_cursor_open(db, NULL, &cursor);
              rc = mdb_cursor_get(cursor, &key, &data, MDB_FIRST);
              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);
              for (i=0; i<32; i++) {
                     rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT);
                     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);
              }
#endif
              mdb_cursor_close(cursor);
              mdb_close(env, dbi);

              mdb_txn_abort(txn);
              mdb_env_close(env);

       return 0;
}

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