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 #include "manes/access_control.h"
  27
  28 #include "arch/low/memory.h"
  29 #include "arch/low/taskswitch.h"
  30
  31 using namespace actors;
  32
  33 actor::actor() : tss_selector(0) {}
  34
  35 void actor::set(delegate<void> _start) {
  36         assert("actor: unknown entry point", _start.null());
  37
  38         start = _start;
  39
  40         delegate<void> del_start(start);
  41         tss_selector = arch::create_tss(del_start, arch::create_vm());
  42 }
  43
  44 void actor::execute() {
  45         assert("actor: unknown entry point", start.null());
  46
  47         arch::jump_tss(tss_selector);
  48 }
  49
  50 void actor::register_type() {
  51         manes::manec::get()->register_type<actor>("actor", "director", manes::type::actor);
  52 }
  53
  54 unsigned int actor::get_tss() {
  55         return tss_selector;
  56 }
  57
  58 void actor::locked(access_control *lock) {
  59         locks.add(lock);
  60 }
  61
  62 void actor::unlocked(access_control *lock) {
  63         for (int i = 0; i < locks.get_count(); i++) {
  64                 if (locks[i] == lock) {
  65                         locks.remove(i);
  66                 }
  67         }
  68 }