Method cleanup_function

kernel/kernel/Process.cpp:392–427

	void Process::cleanup_function(Thread* thread)
	{
		{
			SpinLockGuard _(s_process_lock);
			for (size_t i = 0; i < s_processes.size(); i++)
			{
				if (s_processes[i] != this)
					continue;
				s_processes.remove(i);
				break;
			}
			for (auto it = s_alarm_processes.begin(); it != s_alarm_processes.end();)
			{
				if (*it == this)
					it = s_alarm_processes.remove(it);
				else
					it++;
			}
		}

		m_exited_threads.clear();

		ProcFileSystem::get().on_process_delete(*this);

		m_process_lock.lock();
		m_memory_region_lock.wr_lock();

		m_open_file_descriptors.close_all();

		m_root_file = {};
		m_working_directory = {};

		// NOTE: We must unmap ranges while the page table is still alive
		m_mapped_regions.clear();

		// After we give our page table to the thread, we cannot get rescheduled
		Processor::set_interrupt_state(InterruptState::Disabled);
		thread->give_keep_alive_page_table(BAN::move(m_page_table));
	}

	bool Process::on_thread_exit(Thread& thread)