Sockets/Semaphore.h

   1 /**
   2  **     \file Semaphore.h
   3  **     \date  2007-04-13
   4  **     \author grymse@alhem.net
   5 **/
   6 /*
   7 Copyright (C) 2007  Anders Hedstrom
   8
   9 This program is free software; you can redistribute it and/or
  10 modify it under the terms of the GNU General Public License
  11 as published by the Free Software Foundation; either version 2
  12 of the License, or (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program; if not, write to the Free Software
  21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22 */
  23 #ifndef _SOCKETS_Semaphore_H
  24 #define _SOCKETS_Semaphore_H
  25
  26 #include "sockets-config.h"
  27 #include <pthread.h>
  28 #ifdef MACOSX
  29 #include <sys/semaphore.h>
  30 #else
  31 #include <semaphore.h>
  32 #endif
  33
  34
  35 #ifdef SOCKETS_NAMESPACE
  36 namespace SOCKETS_NAMESPACE {
  37 #endif
  38
  39
  40 /** pthread semaphore wrapper.
  41         \ingroup threading */
  42 class Semaphore
  43 {
  44 public:
  45         Semaphore();
  46         Semaphore(unsigned int start_val);
  47         ~Semaphore();
  48
  49         int Post();
  50         int Wait();
  51         int TryWait();
  52         int GetValue(int&);
  53
  54 private:
  55         Semaphore(const Semaphore& ) {} // copy constructor
  56         Semaphore& operator=(const Semaphore& ) { return *this; } // assignment operator
  57         sem_t m_sem;
  58 };
  59
  60
  61
  62
  63 #ifdef SOCKETS_NAMESPACE
  64 } // namespace SOCKETS_NAMESPACE {
  65 #endif
  66 #endif // _SOCKETS_Semaphore_H
  67