actors/actor.cpp

   1 /* Quarn OS
   2  *
   3  * Actor
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include "actor.h"
  24 #include "manes/error.h"
  25 #include "manes/manec.h"
  26
  27 #include "arch/low/memory.h"
  28 #include "arch/low/taskswitch.h"
  29
  30 using namespace actors;
  31
  32 actor::actor() : tss_selector(0) {}
  33
  34 void actor::set(delegate<void> _start) {
  35         assert("actor: unknown entry point", _start.null());
  36
  37         start = _start;
  38
  39         tss_selector = arch::create_tss(_start, arch::create_vm());
  40 }
  41
  42 void actor::execute() {
  43         assert("actor: unknown entry point", start.null());
  44
  45         arch::jump_tss(tss_selector);
  46 }
  47
  48 void actor::register_type() {
  49         manes::manec::get()->register_type<actor>("actor", "none");
  50 }
  51
  52 unsigned int actor::get_tss() {
  53         return tss_selector;
  54 }
  55