github.com/matrixorigin/matrixone@v1.2.0/pkg/fileservice/memorycache/lrucache/pool.go (about)

     1  // Copyright 2022 Matrix Origin
     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  
    15  package lrucache
    16  
    17  import "sync"
    18  
    19  // pool is a generic wrapper around sync.Pool.
    20  type pool[K comparable, V BytesLike] struct {
    21  	pool sync.Pool
    22  }
    23  
    24  // newPool is a generic wrapper around sync.Pool's New method.
    25  func newPool[K comparable, V BytesLike](fn func() *lruItem[K, V]) *pool[K, V] {
    26  	return &pool[K, V]{
    27  		pool: sync.Pool{New: func() any { return fn() }},
    28  	}
    29  }
    30  
    31  // Get is a generic wrapper around sync.Pool's Get method.
    32  func (p *pool[K, V]) get() *lruItem[K, V] {
    33  	return p.pool.Get().(*lruItem[K, V])
    34  }
    35  
    36  // Get is a generic wrapper around sync.Pool's Put method.
    37  func (p *pool[K, V]) put(v *lruItem[K, V]) {
    38  	p.pool.Put(v)
    39  }