Kernel: All process' memory areas can report their virtual mem usage

LibELF/LibELF/LoadableELF.cpp

@@ -124,6 +124,8 @@ namespace LibELF
 				dprintln("Invalid program header");
 				return BAN::Error::from_errno(EINVAL);
 			}
+
+			m_virtual_page_count += BAN::Math::div_round_up<size_t>((pheader.p_vaddr % PAGE_SIZE) + pheader.p_memsz, PAGE_SIZE);
 		}
 
 		return {};

LibELF/include/LibELF/LoadableELF.h

@@ -33,6 +33,8 @@ namespace LibELF
 
 		BAN::ErrorOr<BAN::UniqPtr<LoadableELF>> clone(Kernel::PageTable&);
 
+		size_t virtual_page_count() const { return m_virtual_page_count; }
+
 	private:
 		LoadableELF(Kernel::PageTable&, BAN::RefPtr<Kernel::Inode>);
 		BAN::ErrorOr<void> initialize();
@@ -42,6 +44,7 @@ namespace LibELF
 		Kernel::PageTable&					m_page_table;
 		ElfNativeFileHeader					m_file_header;
 		BAN::Vector<ElfNativeProgramHeader>	m_program_headers;
+		size_t m_virtual_page_count = 0;
 	};
 
 }