actors/director.cpp

   1 /* Quarn OS
   2  *
   3  * Director
   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 "director.h"
  24 #include "arch/low/taskswitch.h"
  25 #include "arch/low/memory.h"
  26 #include "manes/manec.h"
  27
  28 using namespace actors;
  29
  30 bool director::initialize() {
  31         delegate<void> del_start;
  32         arch::create_tss(del_start, arch::create_vm());
  33         return true;
  34 }
  35
  36 bool director::type_added(manes::cds::component_name) {
  37         return true;
  38 }
  39
  40 void director::execution_flow() {
  41         current = execution_list.pop();
  42         current->execute();
  43
  44         debug("director: nothing to execute, system is halted");
  45         while(1) asm("cli\nhlt");
  46 }
  47
  48 void director::start(p<actor> process) {
  49         execution_list.push(process);
  50 }
  51
  52 void director::launch(p<actor> process) {
  53         start(process);
  54
  55         execution_flow();
  56 }
  57
  58 p<actor> director::get_current() const {
  59         return current;
  60 }
  61
  62 void director::register_type() {
  63         manes::manec::get()->register_type<director>("director", "manec");
  64 }
  65