github.com/matrixorigin/matrixone@v1.2.0/pkg/common/reuse/sync_pool_based.go (about)

     1  // Copyright 2023 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 reuse
    16  
    17  import (
    18  	"runtime"
    19  	"sync"
    20  )
    21  
    22  type syncPoolBased[T ReusableObject] struct {
    23  	pool  sync.Pool
    24  	reset func(*T)
    25  	opts  *Options[T]
    26  	c     *checker[T]
    27  }
    28  
    29  func newSyncPoolBased[T ReusableObject](
    30  	new func() *T,
    31  	reset func(*T),
    32  	opts *Options[T]) Pool[T] {
    33  	opts.adjust()
    34  	c := newChecker[T](opts.enableChecker)
    35  	return &syncPoolBased[T]{
    36  		pool: sync.Pool{
    37  			New: func() any {
    38  				v := new()
    39  				c.created(v)
    40  				runtime.SetFinalizer(
    41  					v,
    42  					func(v *T) {
    43  						if opts.gcRecover != nil {
    44  							defer opts.gcRecover()
    45  						}
    46  						c.gc(v)
    47  						opts.release(v)
    48  					})
    49  				return v
    50  			},
    51  		},
    52  		reset: reset,
    53  		opts:  opts,
    54  		c:     c,
    55  	}
    56  }
    57  
    58  func (p *syncPoolBased[T]) Alloc() *T {
    59  	v := p.pool.Get().(*T)
    60  	p.c.got(v)
    61  	return v
    62  }
    63  
    64  func (p *syncPoolBased[T]) Free(v *T) {
    65  	p.c.free(v)
    66  	p.reset(v)
    67  	p.pool.Put(v)
    68  }