fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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98 lines
3.5 KiB
98 lines
3.5 KiB
/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
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#ident "$Id$"
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/*======
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This file is part of PerconaFT.
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Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
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PerconaFT is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2,
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as published by the Free Software Foundation.
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PerconaFT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
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----------------------------------------
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PerconaFT is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License, version 3,
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as published by the Free Software Foundation.
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PerconaFT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
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----------------------------------------
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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======= */
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#ident \
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"Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
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#pragma once
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#include "../db.h"
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// TODO: John
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// Document this API a little better so that DBT
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// memory management can be morm widely understood.
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DBT *toku_init_dbt(DBT *);
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// returns: an initialized but empty dbt (for which toku_dbt_is_empty() is true)
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DBT toku_empty_dbt(void);
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DBT *toku_init_dbt_flags(DBT *, uint32_t flags);
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void toku_destroy_dbt(DBT *);
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DBT *toku_fill_dbt(DBT *dbt, const void *k, size_t len);
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DBT *toku_memdup_dbt(DBT *dbt, const void *k, size_t len);
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DBT *toku_copyref_dbt(DBT *dst, const DBT src);
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DBT *toku_clone_dbt(DBT *dst, const DBT &src);
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void toku_sdbt_cleanup(struct simple_dbt *sdbt);
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// returns: special DBT pointer representing positive infinity
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const DBT *toku_dbt_positive_infinity(void);
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// returns: special DBT pointer representing negative infinity
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const DBT *toku_dbt_negative_infinity(void);
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// returns: true if the given dbt is either positive or negative infinity
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bool toku_dbt_is_infinite(const DBT *dbt);
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// returns: true if the given dbt has no data (ie: dbt->data == nullptr)
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bool toku_dbt_is_empty(const DBT *dbt);
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// effect: compares two potentially infinity-valued dbts
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// requires: at least one is infinite (assert otherwise)
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int toku_dbt_infinite_compare(const DBT *a, const DBT *b);
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// returns: true if the given dbts have the same data pointer and size
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bool toku_dbt_equals(const DBT *a, const DBT *b);
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