You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.4 KiB
123 lines
3.4 KiB
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include "mdb.h"
|
|
|
|
int main(int argc,char * argv[])
|
|
{
|
|
int i = 0, j = 0, rc;
|
|
MDB_env *env;
|
|
MDB_db *db;
|
|
MDB_val key, data;
|
|
MDB_txn *txn;
|
|
MDB_stat *mst;
|
|
MDB_cursor *cursor, *cur2;
|
|
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 = mdbenv_create(&env);
|
|
rc = mdbenv_set_mapsize(env, 10485760);
|
|
rc = mdbenv_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664);
|
|
rc = mdb_txn_begin(env, 0, &txn);
|
|
rc = mdb_open(env, txn, NULL, 0, &db);
|
|
|
|
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(db, txn, &key, &data, MDB_NOOVERWRITE);
|
|
if (rc) j++;
|
|
}
|
|
if (j) printf("%d duplicates skipped\n", j);
|
|
rc = mdb_txn_commit(txn);
|
|
rc = mdbenv_stat(env, &mst);
|
|
|
|
rc = mdb_cursor_open(db, NULL, &cursor);
|
|
while (rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT) == 0) {
|
|
printf("key: %p %.*s, data: %p %.*s\n",
|
|
key.mv_data, key.mv_size, key.mv_data, data.mv_data, data.mv_size, data.mv_data);
|
|
}
|
|
mdb_cursor_close(cursor);
|
|
|
|
j=0;
|
|
key.mv_data = sval;
|
|
for (i= count - 1; i > -1; i-= (random()%5)) {
|
|
j++;
|
|
txn=NULL;
|
|
rc = mdb_txn_begin(env, 0, &txn);
|
|
sprintf(sval, "%03x ", values[i]);
|
|
rc = mdb_del(db, txn, &key, NULL);
|
|
if (rc) {
|
|
j--;
|
|
mdb_txn_abort(txn);
|
|
} else {
|
|
rc = mdb_txn_commit(txn);
|
|
}
|
|
}
|
|
free(values);
|
|
printf("Deleted %d values\n", j);
|
|
|
|
rc = mdbenv_stat(env, &mst);
|
|
rc = mdb_cursor_open(db, NULL, &cursor);
|
|
while (rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT) == 0) {
|
|
printf("key: %.*s, data: %.*s\n",
|
|
key.mv_size, key.mv_data, data.mv_size, 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, 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, key.mv_size, key.mv_data, data.mv_data, data.mv_size, 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, key.mv_size, key.mv_data, data.mv_data, data.mv_size, 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, key.mv_size, key.mv_data, data.mv_data, data.mv_size, 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, key.mv_size, key.mv_data, data.mv_data, data.mv_size, 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, key.mv_size, key.mv_data, data.mv_data, data.mv_size, data.mv_data);
|
|
}
|
|
#endif
|
|
mdb_cursor_close(cursor);
|
|
|
|
mdb_close(db);
|
|
mdbenv_close(env);
|
|
|
|
return 0;
|
|
}
|
|
|