90 lines
1.8 KiB
Go
90 lines
1.8 KiB
Go
package pools
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import (
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"bufio"
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"io"
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"sync"
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)
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// BufioReaderPool is a pooled allocator for bufio.Reader objects.
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type BufioReaderPool interface {
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// Get fetches a bufio.Reader from pool and resets to supplied reader
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Get(io.Reader) *bufio.Reader
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// Put places supplied bufio.Reader back in pool
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Put(*bufio.Reader)
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}
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// NewBufioReaderPool returns a newly instantiated bufio.Reader pool.
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func NewBufioReaderPool(size int) BufioReaderPool {
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return &bufioReaderPool{
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pool: sync.Pool{
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New: func() interface{} {
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return bufio.NewReaderSize(nil, size)
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},
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},
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size: size,
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}
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}
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// bufioReaderPool is our implementation of BufioReaderPool.
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type bufioReaderPool struct {
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pool sync.Pool
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size int
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}
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func (p *bufioReaderPool) Get(r io.Reader) *bufio.Reader {
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br := p.pool.Get().(*bufio.Reader)
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br.Reset(r)
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return br
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}
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func (p *bufioReaderPool) Put(br *bufio.Reader) {
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if br.Size() < p.size {
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return
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}
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br.Reset(nil)
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p.pool.Put(br)
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}
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// BufioWriterPool is a pooled allocator for bufio.Writer objects.
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type BufioWriterPool interface {
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// Get fetches a bufio.Writer from pool and resets to supplied writer
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Get(io.Writer) *bufio.Writer
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// Put places supplied bufio.Writer back in pool
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Put(*bufio.Writer)
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}
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// NewBufioWriterPool returns a newly instantiated bufio.Writer pool.
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func NewBufioWriterPool(size int) BufioWriterPool {
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return &bufioWriterPool{
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pool: sync.Pool{
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New: func() interface{} {
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return bufio.NewWriterSize(nil, size)
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},
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},
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size: size,
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}
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}
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// bufioWriterPool is our implementation of BufioWriterPool.
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type bufioWriterPool struct {
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pool sync.Pool
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size int
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}
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func (p *bufioWriterPool) Get(w io.Writer) *bufio.Writer {
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bw := p.pool.Get().(*bufio.Writer)
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bw.Reset(w)
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return bw
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}
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func (p *bufioWriterPool) Put(bw *bufio.Writer) {
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if bw.Size() < p.size {
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return
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}
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bw.Reset(nil)
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p.pool.Put(bw)
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}
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