95 lines
3.0 KiB
Go
95 lines
3.0 KiB
Go
// 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 set
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import (
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"github.com/pingcap/tidb/pkg/util/hack"
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"github.com/pingcap/tidb/pkg/util/memory"
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)
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// StringSetWithMemoryUsage is a string set with memory usage.
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type StringSetWithMemoryUsage struct {
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hack.MemAwareMap[string, struct{}]
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// For tracking large memory usage in time.
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// If tracker is non-nil, memDelta will track immediately and reset to 0. Otherwise, memDelta will return and lazy track.
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tracker *memory.Tracker
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}
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// NewStringSetWithMemoryUsage builds a string set.
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func NewStringSetWithMemoryUsage(ss ...string) (setWithMemoryUsage StringSetWithMemoryUsage, memDelta int64) {
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set := make(StringSet, len(ss))
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setWithMemoryUsage.Init(set)
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for _, s := range ss {
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setWithMemoryUsage.Insert(s)
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}
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return setWithMemoryUsage, int64(setWithMemoryUsage.Bytes)
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}
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// Insert inserts `val` into `s` and return memDelta.
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func (s *StringSetWithMemoryUsage) Insert(val string) int64 {
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delta := s.Set(val, struct{}{})
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if delta != 0 && s.tracker != nil {
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s.tracker.Consume(delta)
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delta = 0
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}
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return delta
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}
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// SetTracker sets memory tracker for StringSetWithMemoryUsage
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func (s *StringSetWithMemoryUsage) SetTracker(t *memory.Tracker) {
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s.tracker = t
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}
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// Float64SetWithMemoryUsage is a float64 set with memory usage.
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type Float64SetWithMemoryUsage struct {
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hack.MemAwareMap[float64, struct{}]
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}
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// NewFloat64SetWithMemoryUsage builds a float64 set.
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func NewFloat64SetWithMemoryUsage(ss ...float64) (setWithMemoryUsage Float64SetWithMemoryUsage, memDelta int64) {
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set := make(Float64Set, len(ss))
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setWithMemoryUsage.Init(set)
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for _, s := range ss {
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setWithMemoryUsage.Insert(s)
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}
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return setWithMemoryUsage, int64(setWithMemoryUsage.Bytes)
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}
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// Insert inserts `val` into `s` and return memDelta.
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func (s *Float64SetWithMemoryUsage) Insert(val float64) int64 {
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return s.Set(val, struct{}{})
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}
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// Int64SetWithMemoryUsage is a int set with memory usage.
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type Int64SetWithMemoryUsage struct {
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hack.MemAwareMap[int64, struct{}]
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}
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// NewInt64SetWithMemoryUsage builds an int64 set.
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func NewInt64SetWithMemoryUsage(ss ...int64) (setWithMemoryUsage Int64SetWithMemoryUsage, memDelta int64) {
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set := make(Int64Set, len(ss))
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setWithMemoryUsage.Init(set)
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for _, s := range ss {
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setWithMemoryUsage.Insert(s)
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}
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return setWithMemoryUsage, int64(setWithMemoryUsage.Bytes)
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}
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// Insert inserts `val` into `s` and return memDelta.
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func (s *Int64SetWithMemoryUsage) Insert(val int64) (memDelta int64) {
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return s.Set(val, struct{}{})
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}
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