C++ (Cpp) suspend_new_thread Beispiele

Beispiel #1

Datei: process_kern.c Projekt: GodFox/magx_kernel_xpixl

static void new_thread_handler(int sig)
{
	unsigned long disable;
	int (*fn)(void *);
	void *arg;

	fn = current->thread.request.u.thread.proc;
	arg = current->thread.request.u.thread.arg;

	UPT_SC(&current->thread.regs.regs) = (void *) (&sig + 1);
	disable = (1 << (SIGVTALRM - 1)) | (1 << (SIGALRM - 1)) |
		(1 << (SIGIO - 1)) | (1 << (SIGPROF - 1));
	SC_SIGMASK(UPT_SC(&current->thread.regs.regs)) &= ~disable;

	suspend_new_thread(current->thread.mode.tt.switch_pipe[0]);

	force_flush_all();
	if(current->thread.prev_sched != NULL)
		schedule_tail(current->thread.prev_sched);
	current->thread.prev_sched = NULL;

	init_new_thread_signals(1);
	enable_timer();
	free_page(current->thread.temp_stack);
	set_cmdline("(kernel thread)");

	change_sig(SIGUSR1, 1);
	change_sig(SIGVTALRM, 1);
	change_sig(SIGPROF, 1);
	local_irq_enable();
	if(!run_kernel_thread(fn, arg, &current->thread.exec_buf))
		do_exit(0);

	/* XXX No set_user_mode here because a newly execed process will
	 * immediately segfault on its non-existent IP, coming straight back
	 * to the signal handler, which will call set_user_mode on its way
	 * out.  This should probably change since it's confusing.
	 */
}

Beispiel #2

Datei: process_kern.c Projekt: 420GrayFox/dsl-n55u-bender

void finish_fork_handler(int sig)
{
 	UPT_SC(&current->thread.regs.regs) = (void *) (&sig + 1);
	suspend_new_thread(current->thread.mode.tt.switch_pipe[0]);

	force_flush_all();
	if(current->thread.prev_sched != NULL)
		schedule_tail(current->thread.prev_sched);
	current->thread.prev_sched = NULL;

	enable_timer();
	change_sig(SIGVTALRM, 1);
	local_irq_enable();
	if(current->mm != current->parent->mm)
		protect_memory(uml_reserved, high_physmem - uml_reserved, 1, 
			       1, 0, 1);
	task_protections((unsigned long) current_thread);

	free_page(current->thread.temp_stack);
	local_irq_disable();
	change_sig(SIGUSR1, 0);
	set_user_mode(current);
}