src/lib/util/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 "../libPlatform/os-dependent.h"
  35
  36 class CMutex;
  37
  38 class CCondition
  39 {
  40 public:
  41   CCondition(void);
  42   virtual ~CCondition(void);
  43
  44   void Signal(void);
  45   bool Wait(CMutex *mutex, int64_t iTimeout);
  46   static void Sleep(int iTimeout);
  47
  48 private:
  49   pthread_cond_t  m_cond;
  50 };
  51
  52 class CMutex
  53 {
  54 public:
  55   CMutex(void);
  56   virtual ~CMutex(void);
  57
  58   bool TryLock(void);
  59   bool Lock(void);
  60   void Unlock(void);
  61
  62   pthread_mutex_t m_mutex;
  63 };
  64
  65 class CLockObject
  66 {
  67 public:
  68   CLockObject(CMutex *mutex);
  69   ~CLockObject(void);
  70
  71   bool IsLocked(void) const { return m_bLocked; }
  72   void Leave(void);
  73   void Lock(void);
  74
  75 private:
  76   CMutex *m_mutex;
  77   bool    m_bLocked;
  78 };
  79
  80 class CThread
  81 {
  82 public:
  83   CThread(void);
  84   virtual ~CThread(void);
  85
  86   virtual bool IsRunning(void) const { return m_bRunning; }
  87   virtual bool CreateThread(void);
  88   virtual void StopThread(bool bWaitForExit = true);
  89
  90   static void *ThreadHandler(CThread *thread);
  91   virtual void *Process(void) = 0;
  92
  93 protected:
  94   pthread_t m_thread;
  95   bool      m_bRunning;
  96   bool      m_bStop;
  97 };