risingwave_frontend/catalog/system_catalog/pg_catalog/
pg_locks.rs

1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use risingwave_common::types::Fields;
16use risingwave_frontend_macro::system_catalog;
17
18/// The catalog `pg_locks` provides access to information about the locks held by active processes
19/// within the database server.
20/// Reference: [`https://www.postgresql.org/docs/current/view-pg-locks.html`].
21/// Currently, we don't have any type of lock.
22#[system_catalog(view, "pg_catalog.pg_locks")]
23#[derive(Fields)]
24struct PgLock {
25    locktype: String,
26    database: i32, // oid
27    relation: i32, // oid
28    page: i32,
29    tuple: i16,
30    virtualxid: String,
31    transactionid: i32,
32    classid: i32, // oid
33    objid: i32,   // oid
34    objsubid: i16,
35    virtualtransaction: String,
36    pid: i32,
37    mode: String,
38    granted: bool,
39    fastpath: bool,
40    waitstart: String,
41}