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96d96917e9
By reordering the elements in ovsdb_table_schema structure, pad bytes can be reduced and also a cache line is saved. Before: structure size:72, holes:2, sum padbytes:10, cachelines:2 After: structure size:64, holes:1, sum padbytes:2, cachelines:1 Signed-off-by: Bhanuprakash Bodireddy <bhanuprakash.bodireddy@intel.com> Co-authored-by: Antonio Fischetti <antonio.fischetti@intel.com> Signed-off-by: Antonio Fischetti <antonio.fischetti@intel.com> Acked-by: Jarno Rajahalme <jarno@ovn.org> Acked-by: Daniele Di Proietto <diproiettod@vmware.com>
74 lines
2.7 KiB
C
74 lines
2.7 KiB
C
/* Copyright (c) 2009, 2010, 2011 Nicira, Inc.
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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#ifndef OVSDB_TABLE_H
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#define OVSDB_TABLE_H 1
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#include <stdbool.h>
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#include "compiler.h"
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#include "openvswitch/hmap.h"
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#include "openvswitch/shash.h"
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struct json;
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struct uuid;
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/* Schema for a database table. */
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struct ovsdb_table_schema {
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char *name;
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bool mutable;
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bool is_root; /* Part of garbage collection root set? */
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unsigned int max_rows; /* Maximum number of rows. */
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struct shash columns; /* Contains "struct ovsdb_column *"s. */
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struct ovsdb_column_set *indexes;
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size_t n_indexes;
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};
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struct ovsdb_table_schema *ovsdb_table_schema_create(
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const char *name, bool mutable, unsigned int max_rows, bool is_root);
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struct ovsdb_table_schema *ovsdb_table_schema_clone(
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const struct ovsdb_table_schema *);
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void ovsdb_table_schema_destroy(struct ovsdb_table_schema *);
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struct ovsdb_error *ovsdb_table_schema_from_json(const struct json *,
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const char *name,
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struct ovsdb_table_schema **)
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OVS_WARN_UNUSED_RESULT;
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struct json *ovsdb_table_schema_to_json(const struct ovsdb_table_schema *,
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bool default_is_root);
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const struct ovsdb_column *ovsdb_table_schema_get_column(
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const struct ovsdb_table_schema *, const char *name);
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/* Database table. */
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struct ovsdb_table {
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struct ovsdb_table_schema *schema;
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struct ovsdb_txn_table *txn_table; /* Only if table is in a transaction. */
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struct hmap rows; /* Contains "struct ovsdb_row"s. */
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/* An array of schema->n_indexes hmaps, each of which contains "struct
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* ovsdb_row"s. Each of the hmap_nodes in indexes[i] are at index 'i' at
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* the end of struct ovsdb_row, following the 'fields' member. */
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struct hmap *indexes;
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};
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struct ovsdb_table *ovsdb_table_create(struct ovsdb_table_schema *);
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void ovsdb_table_destroy(struct ovsdb_table *);
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const struct ovsdb_row *ovsdb_table_get_row(const struct ovsdb_table *,
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const struct uuid *);
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#endif /* ovsdb/table.h */
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