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Move Region and Subregion out of Process and make them free classes.

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This commit is contained in:
Andreas Kling 2018-11-01 13:21:02 +01:00
parent 3e532ac7b6
commit fce81d376c
4 changed files with 45 additions and 44 deletions
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38
Kernel/MemoryManager.h
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@ -2,13 +2,15 @@
#include "types.h"
#include "i386.h"
#include <AK/ByteBuffer.h>
#include <AK/Retainable.h>
#include <AK/RetainPtr.h>
#include <AK/Vector.h>
#include <AK/HashTable.h>
#include "Process.h"
#include <AK/String.h>
class Process;
extern Process* current;
enum class PageFaultResponse {
ShouldCrash,
@ -30,6 +32,26 @@ private:
Vector<PhysicalAddress> m_pages;
};
struct Region : public Retainable<Region> {
Region(LinearAddress, size_t, RetainPtr<Zone>&&, String&&);
~Region();
LinearAddress linearAddress;
size_t size { 0 };
RetainPtr<Zone> zone;
String name;
};
struct Subregion {
Subregion(Region&, dword offset, size_t, LinearAddress, String&& name);
~Subregion();
RetainPtr<Region> region;
dword offset;
size_t size { 0 };
LinearAddress linearAddress;
String name;
};
#define MM MemoryManager::the()
class MemoryManager {
@ -46,19 +68,19 @@ public:
RetainPtr<Zone> createZone(size_t);
bool mapSubregion(Process&, Process::Subregion&);
bool unmapSubregion(Process&, Process::Subregion&);
bool mapSubregion(Process&, Subregion&);
bool unmapSubregion(Process&, Subregion&);
bool mapRegion(Process&, Process::Region&);
bool unmapRegion(Process&, Process::Region&);
bool mapRegion(Process&, Region&);
bool unmapRegion(Process&, Region&);
void registerZone(Zone&);
void unregisterZone(Zone&);
void populate_page_directory(Process&);
byte* create_kernel_alias_for_region(Process::Region&);
void remove_kernel_alias_for_region(Process::Region&, byte*);
byte* create_kernel_alias_for_region(Region&);
void remove_kernel_alias_for_region(Region&, byte*);
void enter_kernel_paging_scope();
void enter_process_paging_scope(Process&);
@ -71,7 +93,7 @@ private:
~MemoryManager();
LinearAddress allocate_linear_address_range(size_t);
void map_region_at_address(dword* page_directory, Process::Region&, LinearAddress, bool user_accessible);
void map_region_at_address(dword* page_directory, Region&, LinearAddress, bool user_accessible);
void unmap_range(dword* page_directory, LinearAddress, size_t);
void initializePaging();