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#pragma once
#include <AK/AKString.h>
#include <AK/Badge.h>
#include <AK/RefPtr.h>
#include <AK/RefCounted.h>
#include <AK/Vector.h>
#include <AK/Weakable.h>
#include <Kernel/Lock.h>
#include <Kernel/UnixTypes.h>
#include <Kernel/VM/PhysicalAddress.h>
class Inode;
class PhysicalPage;
class VMObject : public RefCounted<VMObject>
, public Weakable<VMObject> {
friend class MemoryManager;
public:
static NonnullRefPtr<VMObject> create_file_backed(RefPtr<Inode>&&);
static NonnullRefPtr<VMObject> create_anonymous(size_t);
static NonnullRefPtr<VMObject> create_for_physical_range(PhysicalAddress, size_t);
NonnullRefPtr<VMObject> clone();
~VMObject();
bool is_anonymous() const { return !m_inode; }
Inode* inode() { return m_inode.ptr(); }
const Inode* inode() const { return m_inode.ptr(); }
size_t inode_offset() const { return m_inode_offset; }
const String& name() const { return m_name; }
void set_name(const String& name) { m_name = name; }
int page_count() const { return m_size / PAGE_SIZE; }
const Vector<RefPtr<PhysicalPage>>& physical_pages() const { return m_physical_pages; }
Vector<RefPtr<PhysicalPage>>& physical_pages() { return m_physical_pages; }
void inode_contents_changed(Badge<Inode>, off_t, ssize_t, const u8*);
void inode_size_changed(Badge<Inode>, size_t old_size, size_t new_size);
size_t size() const { return m_size; }
private:
VMObject(RefPtr<Inode>&&);
explicit VMObject(VMObject&);
explicit VMObject(size_t);
VMObject(PhysicalAddress, size_t);
template<typename Callback>
void for_each_region(Callback);
String m_name;
bool m_allow_cpu_caching { true };
off_t m_inode_offset { 0 };
size_t m_size { 0 };
RefPtr<Inode> m_inode;
Vector<RefPtr<PhysicalPage>> m_physical_pages;
Lock m_paging_lock { "VMObject" };
};
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