Sockets/Semaphore.cpp

   1 /**
   2  **     \file Semaphore.cpp
   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 #include "Semaphore.h"
  24
  25
  26 #ifdef SOCKETS_NAMESPACE
  27 namespace SOCKETS_NAMESPACE {
  28 #endif
  29
  30
  31 Semaphore::Semaphore()
  32 {
  33         sem_init(&m_sem, 0, 0);
  34 }
  35
  36
  37 Semaphore::Semaphore(unsigned int start_val)
  38 {
  39         sem_init(&m_sem, 0, start_val);
  40 }
  41
  42
  43 Semaphore::~Semaphore()
  44 {
  45         sem_destroy(&m_sem);
  46 }
  47
  48
  49 int Semaphore::Post()
  50 {
  51         return sem_post(&m_sem);
  52 }
  53
  54
  55 int Semaphore::Wait()
  56 {
  57         return sem_wait(&m_sem);
  58 }
  59
  60
  61 int Semaphore::TryWait()
  62 {
  63         return sem_trywait(&m_sem);
  64 }
  65
  66
  67 int Semaphore::GetValue(int& i)
  68 {
  69         return sem_getvalue(&m_sem, &i);
  70 }
  71
  72
  73 #ifdef SOCKETS_NAMESPACE
  74 } // namespace SOCKETS_NAMESPACE {
  75 #endif
  76