ruby-mdbx/experiments/minimal.c
mahlon f3b04f50f4 "COALESCE" has been enabled by default in 0.12.x, deprecated entirely in 0.13.x.
FossilOrigin-Name: 0e15f477afb7b2d74f6216c139358f8dbd9c0d79648bd3d9dfd234deaa6ce397
2025-02-06 19:13:18 +00:00

51 lines
937 B
C

/*
* clang -L/usr/local/lib -I/usr/local/include -lmdbx minimal.c -o minimal-test
*/
#include "mdbx.h"
#include "assert.h"
int
main()
{
MDBX_env *env;
MDBX_txn *txn;
MDBX_dbi dbi;
int rc;
rc = mdbx_env_create( &env );
assert( rc == MDBX_SUCCESS );
rc = mdbx_env_open( env, "./testdb", MDBX_ENV_DEFAULTS, 0644 );
assert( rc == MDBX_SUCCESS );
/*
* Using a read/write transaction handle for mdbx_dbi_open()
* works in all cases.
*
*/
// rc = mdbx_txn_begin( env, NULL, MDBX_TXN_READWRITE, &txn );
/*
* Using a readonly transaction handle seemingly fails for
* use with mdbx_dbi_open().
*
*/
rc = mdbx_txn_begin( env, NULL, MDBX_TXN_RDONLY, &txn );
assert( rc == MDBX_SUCCESS );
rc = mdbx_dbi_open( txn, NULL, MDBX_DB_DEFAULTS|MDBX_CREATE, &dbi );
assert( rc == MDBX_SUCCESS );
mdbx_txn_abort( txn );
mdbx_dbi_close( env, dbi );
mdbx_env_close( env );
mdbx_txn_abort( txn );
return( 0 );
}