mirror of https://github.com/tikv/client-go.git
73 lines
2.4 KiB
Go
73 lines
2.4 KiB
Go
// Copyright 2021 TiKV Authors
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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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// NOTE: The code in this file is based on code from the
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// TiDB project, licensed under the Apache License v 2.0
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//
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// https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/kv/variables.go
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//
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// Copyright 2021 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 kv
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// Variables defines the variables used by KV storage.
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type Variables struct {
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// BackoffLockFast specifies the LockFast backoff base duration in milliseconds.
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BackoffLockFast int
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// BackOffWeight specifies the weight of the max back off time duration.
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BackOffWeight int
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// Pointer to SessionVars.Killed
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// Killed is a flag to indicate that this query is killed.
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// This is an enum value rather than a boolean. See sqlkiller.go
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// in TiDB for its definition.
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// When its value is 0, it's not killed
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// When its value is not 0, it's killed, the value indicates concrete reason.
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Killed *uint32
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}
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// NewVariables create a new Variables instance with default values.
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func NewVariables(killed *uint32) *Variables {
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return &Variables{
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BackoffLockFast: DefBackoffLockFast,
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BackOffWeight: DefBackOffWeight,
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Killed: killed,
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}
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}
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var ignoreKill uint32
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// DefaultVars is the default variables instance.
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var DefaultVars = NewVariables(&ignoreKill)
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// Default values
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const (
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DefBackoffLockFast = 10
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DefBackOffWeight = 2
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)
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