GoToSocial/internal/log/pool.go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package log

import (
	"sync"

	"codeberg.org/gruf/go-byteutil"
)

// bufPool provides a memory pool of log buffers.
var bufPool = sync.Pool{
	New: func() any {
		return &byteutil.Buffer{
			B: make([]byte, 0, 512),
		}
	},
}

// getBuf acquires a buffer from memory pool.
func getBuf() *byteutil.Buffer {
	buf, _ := bufPool.Get().(*byteutil.Buffer)
	return buf
}

// putBuf places (after resetting) buffer back in memory pool, dropping if capacity too large.
func putBuf(buf *byteutil.Buffer) {
	if buf.Cap() > int(^uint16(0)) {
		return // drop large buffer
	}
	buf.Reset()
	bufPool.Put(buf)
}