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// Copyright (C) 2022-2023 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package btrfsitem
// FreeSpaceBitmap is used in conjunction with FreeSpaceInfo for
// highly-fragmented blockgroups.
//
// Key:
//
// key.objectid = object ID of the FreeSpaceInfo (logical_addr)
// key.offset = offset of the FreeSpaceInfo (size)
type FreeSpaceBitmap struct { // complex FREE_SPACE_BITMAP=200
Bitmap []byte
}
func (o *FreeSpaceBitmap) Free() {
bytePool.Put(o.Bitmap)
*o = FreeSpaceBitmap{}
freeSpaceBitmapPool.Put(o)
}
func (o FreeSpaceBitmap) Clone() FreeSpaceBitmap {
o.Bitmap = cloneBytes(o.Bitmap)
return o
}
func (o *FreeSpaceBitmap) UnmarshalBinary(dat []byte) (int, error) {
o.Bitmap = cloneBytes(dat)
return len(dat), nil
}
func (o FreeSpaceBitmap) MarshalBinary() ([]byte, error) {
return append([]byte(nil), o.Bitmap...), nil
}
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