util/xpool: package pool

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Василий Толстов 2024-04-14 00:16:55 +03:00
parent c320d8e518
commit 1bcf71c189
2 changed files with 52 additions and 0 deletions

25
util/xpool/pool.go Normal file
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package pool
import "sync"
type Pool[T any] struct {
p *sync.Pool
}
func NewPool[T any](fn func() T) Pool[T] {
return Pool[T]{
p: &sync.Pool{
New: func() interface{} {
return fn()
},
},
}
}
func (p Pool[T]) Get() T {
return p.p.Get().(T)
}
func (p Pool[T]) Put(t T) {
p.p.Put(t)
}

27
util/xpool/pool_test.go Normal file
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package pool
import (
"bytes"
"strings"
"testing"
)
func TestBytes(t *testing.T) {
p := NewPool(func() *bytes.Buffer { return bytes.NewBuffer(nil) })
b := p.Get()
b.Write([]byte(`test`))
if b.String() != "test" {
t.Fatal("pool not works")
}
p.Put(b)
}
func TestStrings(t *testing.T) {
p := NewPool(func() *strings.Builder { return &strings.Builder{} })
b := p.Get()
b.Write([]byte(`test`))
if b.String() != "test" {
t.Fatal("pool not works")
}
p.Put(b)
}