00001 // this is for emacs file handling -*- mode: c++; indent-tabs-mode: nil -*- 00002 00003 // -- BEGIN LICENSE BLOCK ---------------------------------------------- 00004 // This file is part of FZIs ic_workspace. 00005 // 00006 // This program is free software licensed under the LGPL 00007 // (GNU LESSER GENERAL PUBLIC LICENSE Version 3). 00008 // You can find a copy of this license in LICENSE folder in the top 00009 // directory of the source code. 00010 // 00011 // © Copyright 2016 FZI Forschungszentrum Informatik, Karlsruhe, Germany 00012 // 00013 // -- END LICENSE BLOCK ------------------------------------------------ 00014 00015 //---------------------------------------------------------------------- 00021 //---------------------------------------------------------------------- 00022 #include "SemaphoreImplPosix.h" 00023 00024 #include <errno.h> 00025 00026 namespace icl_core { 00027 namespace logging { 00028 00029 SemaphoreImplPosix::SemaphoreImplPosix(size_t initial_value) 00030 : m_semaphore(0) 00031 { 00032 m_semaphore = new sem_t; 00033 sem_init(m_semaphore, 0, initial_value); 00034 } 00035 00036 SemaphoreImplPosix::~SemaphoreImplPosix() 00037 { 00038 if (m_semaphore) 00039 { 00040 sem_destroy(m_semaphore); 00041 delete m_semaphore; 00042 m_semaphore = 0; 00043 } 00044 } 00045 00046 void SemaphoreImplPosix::post() 00047 { 00048 sem_post(m_semaphore); 00049 } 00050 00051 bool SemaphoreImplPosix::wait() 00052 { 00053 int res = sem_wait(m_semaphore); 00054 return (res == 0); 00055 } 00056 00057 } 00058 }