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Merge pull request #27606 from stevvooe/no-pool-pointer

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pkg/pool: no need for double pointer for sync.Pool
This commit is contained in:
Aaron Lehmann 2016-10-20 17:03:41 -07:00 • committed by GitHub
commit 2e742b0221
1 changed files with 12 additions and 15 deletions
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27
pkg/pools/pools.go
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@ -19,30 +19,26 @@ import (
var ( var (
// BufioReader32KPool is a pool which returns bufio.Reader with a 32K buffer. // BufioReader32KPool is a pool which returns bufio.Reader with a 32K buffer.
BufioReader32KPool *BufioReaderPool BufioReader32KPool = newBufioReaderPoolWithSize(buffer32K)
// BufioWriter32KPool is a pool which returns bufio.Writer with a 32K buffer. // BufioWriter32KPool is a pool which returns bufio.Writer with a 32K buffer.
BufioWriter32KPool *BufioWriterPool BufioWriter32KPool = newBufioWriterPoolWithSize(buffer32K)
) )
const buffer32K = 32 * 1024 const buffer32K = 32 * 1024
// BufioReaderPool is a bufio reader that uses sync.Pool. // BufioReaderPool is a bufio reader that uses sync.Pool.
type BufioReaderPool struct { type BufioReaderPool struct {
pool *sync.Pool pool sync.Pool
}
func init() {
BufioReader32KPool = newBufioReaderPoolWithSize(buffer32K)
BufioWriter32KPool = newBufioWriterPoolWithSize(buffer32K)
} }
// newBufioReaderPoolWithSize is unexported because new pools should be // newBufioReaderPoolWithSize is unexported because new pools should be
// added here to be shared where required. // added here to be shared where required.
func newBufioReaderPoolWithSize(size int) *BufioReaderPool { func newBufioReaderPoolWithSize(size int) *BufioReaderPool {
pool := &sync.Pool{ return &BufioReaderPool{
New: func() interface{} { return bufio.NewReaderSize(nil, size) }, pool: sync.Pool{
New: func() interface{} { return bufio.NewReaderSize(nil, size) },
},
} }
return &BufioReaderPool{pool: pool}
} }
// Get returns a bufio.Reader which reads from r. The buffer size is that of the pool. // Get returns a bufio.Reader which reads from r. The buffer size is that of the pool.
@ -80,16 +76,17 @@ func (bufPool *BufioReaderPool) NewReadCloserWrapper(buf *bufio.Reader, r io.Rea
// BufioWriterPool is a bufio writer that uses sync.Pool. // BufioWriterPool is a bufio writer that uses sync.Pool.
type BufioWriterPool struct { type BufioWriterPool struct {
pool *sync.Pool pool sync.Pool
} }
// newBufioWriterPoolWithSize is unexported because new pools should be // newBufioWriterPoolWithSize is unexported because new pools should be
// added here to be shared where required. // added here to be shared where required.
func newBufioWriterPoolWithSize(size int) *BufioWriterPool { func newBufioWriterPoolWithSize(size int) *BufioWriterPool {
pool := &sync.Pool{ return &BufioWriterPool{
New: func() interface{} { return bufio.NewWriterSize(nil, size) }, pool: sync.Pool{
New: func() interface{} { return bufio.NewWriterSize(nil, size) },
},
} }
return &BufioWriterPool{pool: pool}
} }
// Get returns a bufio.Writer which writes to w. The buffer size is that of the pool. // Get returns a bufio.Writer which writes to w. The buffer size is that of the pool.