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Re: mdb_drop in lmdb
Conrad Steenberg wrote:
[resending to the list, doesn't seem to have gotten through]
I'm in the process of creating a binding for lmdb for the Crack
language. So far everything works really well, except that I'm not sure
about the workings of mdb_drop() to clear all the items from a database.
Is there an example usage somewhere that I can look at?
The definitive example of how to use LMDB is OpenLDAP slapd back-mdb. mdb_drop
is used in back-mdb/tools.c.
You can also take a look at the dict_lmdb.c driver in Postfix 2.11 for another
Basically for an already open db handle inside an MDB_env I do
_tmpTxn = mdb_txn_begin(_env, NULL, 0)
mdb_drop(_tmpTxn, _dbi, 0)
However, when the db is opened again with mdb_dbi_open() I sometimes get
MDB_BAD_RSLOT: Invalid reuse of reader locktable slot
That seems a bit odd, mdb_dbi_open() cannot return MDB_BAD_RSLOT.
I'm sure I'm missing a step somewhere! Any ideas?
Might help to see your actual code that causes this situation.
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/