src/lib/platform/threads.h

   1 #pragma once
   2 /*
   3  * This file is part of the libCEC(R) library.
   4  *
   5  * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited.  All rights reserved.
   6  * libCEC(R) is an original work, containing original code.
   7  *
   8  * libCEC(R) is a trademark of Pulse-Eight Limited.
   9  *
  10  * This program is dual-licensed; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  *
  24  *
  25  * Alternatively, you can license this library under a commercial license,
  26  * please contact Pulse-Eight Licensing for more information.
  27  *
  28  * For more information contact:
  29  * Pulse-Eight Licensing       <license@pulse-eight.com>
  30  *     http://www.pulse-eight.com/
  31  *     http://www.pulse-eight.net/
  32  */
  33
  34 #include "os-dependent.h"
  35
  36 namespace CEC
  37 {
  38   class CMutex;
  39
  40   class CCondition
  41   {
  42   public:
  43     CCondition(void);
  44     virtual ~CCondition(void);
  45
  46     void Signal(void);
  47     bool Wait(CMutex *mutex, int64_t iTimeout);
  48     static void Sleep(int iTimeout);
  49
  50   private:
  51     pthread_cond_t  m_cond;
  52   };
  53
  54   class CMutex
  55   {
  56   public:
  57     CMutex(void);
  58     virtual ~CMutex(void);
  59
  60     bool TryLock(void);
  61     bool Lock(void);
  62     void Unlock(void);
  63
  64     pthread_mutex_t m_mutex;
  65   };
  66
  67   class CLockObject
  68   {
  69   public:
  70     CLockObject(CMutex *mutex);
  71     ~CLockObject(void);
  72
  73     bool IsLocked(void) const { return m_bLocked; }
  74     void Leave(void);
  75     void Lock(void);
  76
  77   private:
  78     CMutex *m_mutex;
  79     bool    m_bLocked;
  80   };
  81
  82   class CThread
  83   {
  84   public:
  85     CThread(void);
  86     virtual ~CThread(void);
  87
  88     virtual bool IsRunning(void) const { return m_bRunning; }
  89     virtual bool CreateThread(void);
  90     virtual void StopThread(bool bWaitForExit = true);
  91
  92     static void *ThreadHandler(CThread *thread);
  93     virtual void *Process(void) = 0;
  94
  95   protected:
  96     pthread_t m_thread;
  97     bool      m_bRunning;
  98     bool      m_bStop;
  99   };
 100 };