Module: LMDB
- Defined in:
- ext/lmdb_ext/lmdb_ext.c,
lib/lmdb/version.rb,
lib/lmdb/database.rb,
ext/lmdb_ext/lmdb_ext.c
Overview
The LMDB module presents a Ruby API to the OpenLDAP Lightning Memory-mapped Database (LMDB).
Defined Under Namespace
Classes: Cursor, Database, Environment, Error, Transaction
Constant Summary collapse
- VERSION =
'0.4.8'
- LIB_VERSION =
rb_str_new2(MDB_VERSION_STRING)
Class Method Summary collapse
-
.new(path, opts) {|env| ... } ⇒ Environment
Open an LMDB database environment.
Class Method Details
.new(path, opts) {|env| ... } ⇒ Environment
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# File 'ext/lmdb_ext/lmdb_ext.c', line 471
static VALUE environment_new(int argc, VALUE *argv, VALUE klass) {
VALUE path, option_hash;
rb_scan_args(argc, argv, "1:", &path, &option_hash);
EnvironmentOptions options = {
.flags = MDB_NOTLS,
.maxreaders = -1,
.maxdbs = 128,
.mapsize = 0,
.mode = 0755,
};
if (!NIL_P(option_hash))
rb_hash_foreach(option_hash, environment_options, (VALUE)&options);
MDB_env* env;
check(mdb_env_create(&env));
Environment* environment;
VALUE venv = Data_Make_Struct(cEnvironment, Environment, environment_mark, environment_free, environment);
environment->env = env;
environment->thread_txn_hash = rb_hash_new();
environment->txn_thread_hash = rb_hash_new();
if (options.maxreaders > 0)
check(mdb_env_set_maxreaders(env, options.maxreaders));
if (options.mapsize > 0)
check(mdb_env_set_mapsize(env, options.mapsize));
check(mdb_env_set_maxdbs(env, options.maxdbs <= 0 ? 1 : options.maxdbs));
VALUE expanded_path = rb_file_expand_path(path, Qnil);
check(mdb_env_open(env, StringValueCStr(expanded_path), options.flags, options.mode));
if (rb_block_given_p())
return rb_ensure(rb_yield, venv, environment_close, venv);
return venv;
}
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