github.com/m3db/m3@v1.5.0/src/dbnode/x/xpool/pool.go (about)

     1  // Copyright (c) 2018 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package xpool
    22  
    23  import (
    24  	"github.com/m3db/m3/src/x/checked"
    25  	"github.com/m3db/m3/src/x/pool"
    26  )
    27  
    28  type checkedPool struct {
    29  	pool pool.ObjectPool
    30  	opts checked.BytesOptions
    31  }
    32  
    33  // NewCheckedBytesWrapperPool returns a new CheckedBytesWrapperPool with the
    34  // defined size.
    35  func NewCheckedBytesWrapperPool(popts pool.ObjectPoolOptions) CheckedBytesWrapperPool {
    36  	p := pool.NewObjectPool(popts)
    37  	opts := checked.NewBytesOptions().SetFinalizer(
    38  		checked.BytesFinalizerFn(func(b checked.Bytes) {
    39  			b.IncRef()
    40  			b.Reset(nil)
    41  			b.DecRef()
    42  			p.Put(b)
    43  		}))
    44  
    45  	return &checkedPool{
    46  		pool: p,
    47  		opts: opts,
    48  	}
    49  }
    50  
    51  func (p *checkedPool) Init() {
    52  	p.pool.Init(func() interface{} {
    53  		return checked.NewBytes(nil, p.opts)
    54  	})
    55  }
    56  
    57  func (p *checkedPool) Get(b []byte) checked.Bytes {
    58  	checkedBytes := p.pool.Get().(checked.Bytes)
    59  	checkedBytes.IncRef()
    60  	checkedBytes.Reset(b)
    61  	checkedBytes.DecRef()
    62  	return checkedBytes
    63  }