import { Allocator, Compiled } from './allocator.ts';
import { MemoryView } from '../helpers/memoryview.ts';
export declare class DISK extends Compiled {
    static _tried_io_uring_init: boolean;
    size?: number;
    count: number;
    mem: Uint8Array;
    constructor(device: string);
    get filename(): string;
    _might_open: (size: number) => void;
    _might_close: () => void;
    _iouring_setup: () => void;
}
export declare class DiskBuffer {
    device: DISK;
    size: number;
    offset: number;
    constructor(device: DISK, size: number, offset?: number);
    toString: () => string;
    _buf: () => MemoryView;
}
export declare class DiskAllocator extends Allocator<DiskBuffer> {
    dev: DISK;
    constructor(dev: DISK);
    _alloc: (size: number, options: any) => DiskBuffer;
    _free: (opaque: any, options: any) => void;
    write: (buf: MemoryView, offset: number) => void;
    _copyin: (dest: DiskBuffer, src: MemoryView) => void;
    _copyout: (dest: MemoryView, src: DiskBuffer) => void;
    _as_buffer: (src: DiskBuffer) => MemoryView<"B">;
    _offset: (buf: DiskBuffer, size: number, offset: number) => DiskBuffer;
    _copyout_sharded: (src: DiskBuffer, size: number, _get_free_buf: () => void, seg_len: number) => [number, number, number, number][];
}