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;
 	};
 
 }

kernel/include/kernel/Memory/MemoryRegion.h

@@ -37,6 +37,8 @@ namespace Kernel
 		size_t size() const { return m_size; }
 		vaddr_t vaddr() const { return m_vaddr; }
 
+		size_t virtual_page_count() const { return BAN::Math::div_round_up<size_t>(m_size, PAGE_SIZE); }
+
 		// Returns error if no memory was available
 		// Returns true if page was succesfully allocated
 		// Returns false if page was already allocated

kernel/include/kernel/Thread.h

@@ -83,6 +83,8 @@ namespace Kernel
 
 		bool is_userspace() const { return m_is_userspace; }
 
+		size_t virtual_page_count() const { return m_stack->size() / PAGE_SIZE; }
+
 #if __enable_sse
 		void save_sse() { asm volatile("fxsave %0" :: "m"(m_sse_storage)); }
 		void load_sse() { asm volatile("fxrstor %0" :: "m"(m_sse_storage)); }