eibd/libserver/threads.h

   1 /*
   2     EIBD eib bus access and management daemon
   3     Copyright (C) 2005-2009 Martin Koegler <mkoegler@auto.tuwien.ac.at>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 */
  19
  20 #ifndef THREADS_H
  21 #define THREADS_H
  22
  23 #include <pthsem.h>
  24
  25 /** interface for a class started by a thread */
  26 class Runable
  27 {
  28 public:
  29 };
  30
  31 /** pointer to an thread entry point in Runable
  32  * the thread should exit, if stopcond can be deceremented
  33  */
  34 typedef void (Runable::*THREADENTRY) (pth_sem_t * stopcond);
  35
  36 /** implements a Thread */
  37 class Thread
  38 {
  39   /** delete at stop */
  40   bool autodel;
  41   /** C entry point for the threads */
  42   static void *ThreadWrapper (void *arg);
  43   /** thread id */
  44   pth_t tid;
  45   /** object to run */
  46   Runable *obj;
  47   /** entry point */
  48   THREADENTRY entry;
  49   /** stop condition */
  50   pth_sem_t should_stop;
  51   /** priority */
  52   int prio;
  53
  54 protected:
  55   /** main function of the thread
  56    * @param stop if stop can be decemented, the routine should exit
  57    */
  58     virtual void Run (pth_sem_t * stop);
  59 public:
  60     /** create a thread
  61      * if o and t are not present, Run is runned, which has to be replaced
  62      * @param o Object to run
  63      * @param t Entry point
  64      */
  65     Thread (int Priority = PTH_PRIO_STD, Runable * o = 0, THREADENTRY t = 0);
  66     virtual ~ Thread ();
  67
  68     /** starts the thread*/
  69   void Start ();
  70   /** stops the thread, if it is running */
  71   void Stop ();
  72   /** stops the thread and delete it asynchronous */
  73   void StopDelete ();
  74 };
  75
  76
  77 #endif