github.com/m3db/m3@v1.5.0/src/dbnode/client/fetch_batch_element_array_pool.go (about)

     1  // Copyright (c) 2019 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 client
    22  
    23  import (
    24  	"github.com/m3db/m3/src/dbnode/generated/thrift/rpc"
    25  	"github.com/m3db/m3/src/x/pool"
    26  )
    27  
    28  type fetchBatchRawV2RequestElementArrayPool interface {
    29  	// Init pool
    30  	Init()
    31  
    32  	// Get an array of WriteBatchV2RawRequestElement objects
    33  	Get() []*rpc.FetchBatchRawV2RequestElement
    34  
    35  	// Put an array of FetchBatchRawV2RequestElement objects
    36  	Put(w []*rpc.FetchBatchRawV2RequestElement)
    37  }
    38  
    39  type poolOfFetchBatchRawV2RequestElementArray struct {
    40  	pool     pool.ObjectPool
    41  	capacity int
    42  }
    43  
    44  func newFetchBatchRawV2RequestElementArrayPool(
    45  	opts pool.ObjectPoolOptions, capacity int) fetchBatchRawV2RequestElementArrayPool {
    46  
    47  	p := pool.NewObjectPool(opts)
    48  	return &poolOfFetchBatchRawV2RequestElementArray{p, capacity}
    49  }
    50  
    51  func (p *poolOfFetchBatchRawV2RequestElementArray) Init() {
    52  	p.pool.Init(func() interface{} {
    53  		return make([]*rpc.FetchBatchRawV2RequestElement, 0, p.capacity)
    54  	})
    55  }
    56  
    57  func (p *poolOfFetchBatchRawV2RequestElementArray) Get() []*rpc.FetchBatchRawV2RequestElement {
    58  	return p.pool.Get().([]*rpc.FetchBatchRawV2RequestElement)
    59  }
    60  
    61  func (p *poolOfFetchBatchRawV2RequestElementArray) Put(w []*rpc.FetchBatchRawV2RequestElement) {
    62  	for i := range w {
    63  		w[i] = nil
    64  	}
    65  	w = w[:0]
    66  	p.pool.Put(w)
    67  }