mirror of https://github.com/v2ray/v2ray-core
53 lines
1016 B
Go
53 lines
1016 B
Go
package buf
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import (
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"sync"
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)
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// Pool provides functionality to generate and recycle buffers on demand.
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type Pool interface {
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// Allocate either returns a unused buffer from the pool, or generates a new one from system.
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Allocate() *Buffer
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// Free recycles the given buffer.
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Free(*Buffer)
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}
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// SyncPool is a buffer pool based on sync.Pool
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type SyncPool struct {
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allocator *sync.Pool
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}
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// NewSyncPool creates a SyncPool with given buffer size.
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func NewSyncPool(bufferSize uint32) *SyncPool {
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pool := &SyncPool{
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allocator: &sync.Pool{
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New: func() interface{} { return make([]byte, bufferSize) },
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},
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}
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return pool
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}
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// Allocate implements Pool.Allocate().
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func (p *SyncPool) Allocate() *Buffer {
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return &Buffer{
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v: p.allocator.Get().([]byte),
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pool: p,
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}
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}
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// Free implements Pool.Free().
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func (p *SyncPool) Free(buffer *Buffer) {
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if buffer.v != nil {
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p.allocator.Put(buffer.v)
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}
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}
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const (
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// Size of a regular buffer.
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Size = 2 * 1024
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)
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var (
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mediumPool Pool = NewSyncPool(Size)
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)
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