From 0c7e7bce18558ea04e120b5fddcf4d22c0abc785 Mon Sep 17 00:00:00 2001 From: Lee Clagett Date: Wed, 26 Sep 2018 23:54:27 -0400 Subject: Adding classes, functions, and utilities for common LMDB operations. --- src/lmdb/table.cpp | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 src/lmdb/table.cpp (limited to 'src/lmdb/table.cpp') diff --git a/src/lmdb/table.cpp b/src/lmdb/table.cpp new file mode 100644 index 000000000..0818b74e6 --- /dev/null +++ b/src/lmdb/table.cpp @@ -0,0 +1,43 @@ +// Copyright (c) 2018, The Monero Project +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without modification, are +// permitted provided that the following conditions are met: +// +// 1. Redistributions of source code must retain the above copyright notice, this list of +// conditions and the following disclaimer. +// +// 2. Redistributions in binary form must reproduce the above copyright notice, this list +// of conditions and the following disclaimer in the documentation and/or other +// materials provided with the distribution. +// +// 3. Neither the name of the copyright holder nor the names of its contributors may be +// used to endorse or promote products derived from this software without specific +// prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY +// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL +// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF +// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +#include "table.h" + +namespace lmdb +{ + expect table::open(MDB_txn& write_txn) const noexcept + { + MONERO_PRECOND(name != nullptr); + + MDB_dbi out; + MONERO_LMDB_CHECK(mdb_dbi_open(&write_txn, name, flags, &out)); + if (key_cmp && !(flags & MDB_INTEGERKEY)) + MONERO_LMDB_CHECK(mdb_set_compare(&write_txn, out, key_cmp)); + if (value_cmp && !(flags & MDB_INTEGERDUP)) + MONERO_LMDB_CHECK(mdb_set_dupsort(&write_txn, out, value_cmp)); + return out; + } +} -- cgit v1.2.3