81 lines
3.0 KiB
Go
81 lines
3.0 KiB
Go
// Copyright 2023 PingCAP, 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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package handle
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import (
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"context"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/parser/ast"
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"github.com/pingcap/tidb/statistics/handle/lockstats"
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"github.com/pingcap/tidb/util/sqlexec"
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)
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// AddLockedTables add locked tables id to store.
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// - tids: table ids of which will be locked.
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// - pids: partition ids of which will be locked.
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// - tables: table names of which will be locked.
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// Return the message of skipped tables and error.
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func (h *Handle) AddLockedTables(tids []int64, pids []int64, tables []*ast.TableName) (string, error) {
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h.mu.Lock()
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defer h.mu.Unlock()
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return lockstats.AddLockedTables(h.mu.ctx.(sqlexec.SQLExecutor), tids, pids, tables)
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}
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// RemoveLockedTables remove tables from table locked array.
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// - tids: table ids of which will be unlocked.
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// - pids: partition ids of which will be unlocked.
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// - tables: table names of which will be unlocked.
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// Return the message of skipped tables and error.
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func (h *Handle) RemoveLockedTables(tids []int64, pids []int64, tables []*ast.TableName) (string, error) {
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h.mu.Lock()
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defer h.mu.Unlock()
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return lockstats.RemoveLockedTables(h.mu.ctx.(sqlexec.SQLExecutor), tids, pids, tables)
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}
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// QueryTablesLockedStatuses query whether table is locked in handle with Handle.Mutex.
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// Note: This function query locked tables from store, so please try to batch the query.
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func (h *Handle) QueryTablesLockedStatuses(tableIDs ...int64) (map[int64]bool, error) {
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h.mu.Lock()
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defer h.mu.Unlock()
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return h.queryTablesLockedStatuses(tableIDs...)
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}
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// queryTablesLockedStatuses query whether table is locked in handle without Handle.Mutex
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// Note: This function query locked tables from store, so please try to batch the query.
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func (h *Handle) queryTablesLockedStatuses(tableIDs ...int64) (map[int64]bool, error) {
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tableLocked, err := h.queryLockedTablesWithoutLock()
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if err != nil {
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return nil, err
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}
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return lockstats.GetTablesLockedStatuses(tableLocked, tableIDs...), nil
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}
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// queryLockedTablesWithoutLock query locked tables from store without Handle.Mutex.
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func (h *Handle) queryLockedTablesWithoutLock() (map[int64]struct{}, error) {
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ctx := kv.WithInternalSourceType(context.Background(), kv.InternalTxnStats)
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exec := h.mu.ctx.(sqlexec.SQLExecutor)
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return lockstats.QueryLockedTables(ctx, exec)
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}
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// GetTableLockedAndClearForTest for unit test only
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func (h *Handle) GetTableLockedAndClearForTest() (map[int64]struct{}, error) {
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h.mu.Lock()
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defer h.mu.Unlock()
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return h.queryLockedTablesWithoutLock()
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}
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