51 lines
1.2 KiB
Go
51 lines
1.2 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 manual
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import (
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"fmt"
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"go.uber.org/atomic"
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)
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// Allocator is a manual allocator for memory.
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type Allocator struct {
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RefCnt *atomic.Int64
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}
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// Alloc allocates a new byte slice with the given size.
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func (a Allocator) Alloc(n int) []byte {
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if a.RefCnt != nil {
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a.RefCnt.Add(1)
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}
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return New(n)
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}
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// Free frees the byte slice.
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func (a Allocator) Free(b []byte) {
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if a.RefCnt != nil {
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a.RefCnt.Add(-1)
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}
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Free(b)
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}
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// CheckRefCnt checks whether there is memory leak.
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func (a Allocator) CheckRefCnt() error {
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if a.RefCnt != nil && a.RefCnt.Load() != 0 {
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return fmt.Errorf("memory leak detected, refCnt: %d", a.RefCnt.Load())
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}
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return nil
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}
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