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Kernel: Split InodeVMObject into two subclasses

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We now have PrivateInodeVMObject and SharedInodeVMObject, corresponding
to MAP_PRIVATE and MAP_SHARED respectively.

Note that PrivateInodeVMObject is not used yet.
This commit is contained in:
Andreas Kling 2020-02-28 20:20:35 +01:00
parent 07a26aece3
commit 651417a085
9 changed files with 371 additions and 166 deletions
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29
Kernel/VM/SharedInodeVMObject.h
View file

@ -28,45 +28,24 @@
#include <AK/Bitmap.h>
#include <Kernel/UnixTypes.h>
#include <Kernel/VM/VMObject.h>
#include <Kernel/VM/InodeVMObject.h>
namespace Kernel {
class SharedInodeVMObject final : public VMObject {
class SharedInodeVMObject final : public InodeVMObject {
AK_MAKE_NONMOVABLE(SharedInodeVMObject);
public:
virtual ~SharedInodeVMObject() override;
static NonnullRefPtr<SharedInodeVMObject> create_with_inode(Inode&);
virtual NonnullRefPtr<VMObject> clone() override;
Inode& inode() { return *m_inode; }
const Inode& inode() const { return *m_inode; }
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 amount_dirty() const;
size_t amount_clean() const;
int release_all_clean_pages();
u32 writable_mappings() const;
u32 executable_mappings() const;
private:
explicit SharedInodeVMObject(Inode&, size_t);
explicit SharedInodeVMObject(const SharedInodeVMObject&);
SharedInodeVMObject& operator=(const SharedInodeVMObject&) = delete;
SharedInodeVMObject& operator=(SharedInodeVMObject&&) = delete;
SharedInodeVMObject(SharedInodeVMObject&&) = delete;
virtual bool is_inode() const override { return true; }
int release_all_clean_pages_impl();
NonnullRefPtr<Inode> m_inode;
Bitmap m_dirty_pages;
};
}