ladybird/Kernel/FileSystem/Custody.h
Andreas Kling 318068fe1b Kernel: Turns global Custody and Inode tables into InlineLinkedLists
Yet more of this same thing. Each one of these patches has a small but
noticeable impact on the steady-state kmalloc numbers. :^)
2019-08-08 11:11:22 +02:00

53 lines
1.4 KiB
C++

#pragma once
#include <AK/AKString.h>
#include <AK/Badge.h>
#include <AK/InlineLinkedList.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
class Inode;
class VFS;
// FIXME: Custody needs some locking.
class Custody : public RefCounted<Custody>
, public InlineLinkedListNode<Custody> {
public:
static Custody* get_if_cached(Custody* parent, const String& name);
static NonnullRefPtr<Custody> get_or_create(Custody* parent, const String& name, Inode&);
static NonnullRefPtr<Custody> create(Custody* parent, const String& name, Inode& inode)
{
return adopt(*new Custody(parent, name, inode));
}
~Custody();
Custody* parent() { return m_parent.ptr(); }
const Custody* parent() const { return m_parent.ptr(); }
Inode& inode() { return *m_inode; }
const Inode& inode() const { return *m_inode; }
const String& name() const { return m_name; }
String absolute_path() const;
bool is_deleted() const { return m_deleted; }
bool is_mounted_on() const { return m_mounted_on; }
void did_delete(Badge<VFS>);
void did_mount_on(Badge<VFS>);
void did_rename(Badge<VFS>, const String& name);
// For InlineLinkedListNode.
Custody* m_next { nullptr };
Custody* m_prev { nullptr };
private:
Custody(Custody* parent, const String& name, Inode&);
RefPtr<Custody> m_parent;
String m_name;
NonnullRefPtr<Inode> m_inode;
bool m_deleted { false };
bool m_mounted_on { false };
};