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Process now maps regions immediately when they are allocated.

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This avoids having to do a separate MM.mapRegionsForTask() pass.

Also, more Task => Process renaming that I apparently hadn't saved yet.
This commit is contained in:
Andreas Kling 2018-11-01 13:15:46 +01:00
parent 4e60551aec
commit 3e532ac7b6
14 changed files with 327 additions and 387 deletions
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35
Kernel/MemoryManager.h
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@ -6,9 +6,9 @@
#include <AK/RetainPtr.h>
#include <AK/Vector.h>
#include <AK/HashTable.h>
#include "Task.h"
#include "Process.h"
class Task;
class Process;
enum class PageFaultResponse {
ShouldCrash,
@ -46,33 +46,32 @@ public:
RetainPtr<Zone> createZone(size_t);
bool mapSubregion(Task&, Task::Subregion&);
bool unmapSubregion(Task&, Task::Subregion&);
bool mapSubregion(Process&, Process::Subregion&);
bool unmapSubregion(Process&, Process::Subregion&);
bool mapRegion(Task&, Task::Region&);
bool unmapRegion(Task&, Task::Region&);
bool mapRegionsForTask(Task&);
bool mapRegion(Process&, Process::Region&);
bool unmapRegion(Process&, Process::Region&);
void registerZone(Zone&);
void unregisterZone(Zone&);
void populate_page_directory(Task&);
void populate_page_directory(Process&);
byte* create_kernel_alias_for_region(Task::Region&);
void remove_kernel_alias_for_region(Task::Region&, byte*);
byte* create_kernel_alias_for_region(Process::Region&);
void remove_kernel_alias_for_region(Process::Region&, byte*);
void enter_kernel_paging_scope();
void enter_task_paging_scope(Task&);
void enter_process_paging_scope(Process&);
bool validate_user_read(const Task&, LinearAddress) const;
bool validate_user_write(const Task&, LinearAddress) const;
bool validate_user_read(const Process&, LinearAddress) const;
bool validate_user_write(const Process&, LinearAddress) const;
private:
MemoryManager();
~MemoryManager();
LinearAddress allocate_linear_address_range(size_t);
void map_region_at_address(dword* page_directory, Task::Region&, LinearAddress);
void map_region_at_address(dword* page_directory, Process::Region&, LinearAddress, bool user_accessible);
void unmap_range(dword* page_directory, LinearAddress, size_t);
void initializePaging();
@ -179,10 +178,10 @@ private:
struct KernelPagingScope {
KernelPagingScope() { MM.enter_kernel_paging_scope(); }
~KernelPagingScope() { MM.enter_task_paging_scope(*current); }
~KernelPagingScope() { MM.enter_process_paging_scope(*current); }
};
struct OtherTaskPagingScope {
OtherTaskPagingScope(Task& task) { MM.enter_task_paging_scope(task); }
~OtherTaskPagingScope() { MM.enter_task_paging_scope(*current); }
struct OtherProcessPagingScope {
OtherProcessPagingScope(Process& process) { MM.enter_process_paging_scope(process); }
~OtherProcessPagingScope() { MM.enter_process_paging_scope(*current); }
};