services/timer.cpp

   1 /* Quarn OS
   2  *
   3  * Timer
   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 "timer.h"
  24 #include "services/kernel_state.h"
  25 #include "manes/manec.h"
  26
  27 using namespace manes;
  28 using namespace services;
  29
  30 void timer::set_timer(int wait, delegate<void> _call) {
  31         assert("timer: incorrect wait argument", wait < 1);
  32         assert("timer: incorrect alarm delegate", _call.null());
  33
  34         ks = manec::state();
  35
  36         delegate<void> ptr_time_tick;
  37         ptr_time_tick.method(this,&timer::time_tick);
  38
  39         call = _call;
  40
  41         start = ks->get_time();
  42         end = start + wait;
  43         ks->add_time_tick_call(ptr_time_tick);
  44
  45 }
  46
  47 void timer::time_tick() {
  48         if (end != ks->get_time()) return;
  49
  50         delegate<void> ptr_time_tick;
  51         ptr_time_tick.method(this, &timer::time_tick);
  52         ks->del_time_tick_call(ptr_time_tick);
  53
  54         call();
  55 }
  56
  57 void timer::register_type() {
  58         manec::register_type<timer>("timer", "server", type::service);
  59 }