mirror of
https://github.com/kasmtech/KasmVNC.git
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155 lines
3.7 KiB
C++
155 lines
3.7 KiB
C++
/* Copyright 2015 Pierre Ossman for Cendio AB
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#ifdef WIN32
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#include <windows.h>
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#else
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#include <pthread.h>
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#endif
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#include <rdr/Exception.h>
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#include <os/Mutex.h>
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using namespace os;
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Mutex::Mutex()
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{
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#ifdef WIN32
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systemMutex = new CRITICAL_SECTION;
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InitializeCriticalSection((CRITICAL_SECTION*)systemMutex);
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#else
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int ret;
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systemMutex = new pthread_mutex_t;
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ret = pthread_mutex_init((pthread_mutex_t*)systemMutex, NULL);
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if (ret != 0)
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throw rdr::SystemException("Failed to create mutex", ret);
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#endif
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}
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Mutex::~Mutex()
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{
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#ifdef WIN32
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DeleteCriticalSection((CRITICAL_SECTION*)systemMutex);
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delete (CRITICAL_SECTION*)systemMutex;
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#else
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pthread_mutex_destroy((pthread_mutex_t*)systemMutex);
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delete (pthread_mutex_t*)systemMutex;
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#endif
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}
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void Mutex::lock()
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{
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#ifdef WIN32
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EnterCriticalSection((CRITICAL_SECTION*)systemMutex);
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#else
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int ret;
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ret = pthread_mutex_lock((pthread_mutex_t*)systemMutex);
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if (ret != 0)
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throw rdr::SystemException("Failed to lock mutex", ret);
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#endif
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}
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void Mutex::unlock()
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{
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#ifdef WIN32
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LeaveCriticalSection((CRITICAL_SECTION*)systemMutex);
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#else
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int ret;
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ret = pthread_mutex_unlock((pthread_mutex_t*)systemMutex);
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if (ret != 0)
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throw rdr::SystemException("Failed to unlock mutex", ret);
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#endif
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}
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Condition::Condition(Mutex* mutex)
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{
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this->mutex = mutex;
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#ifdef WIN32
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systemCondition = new CONDITION_VARIABLE;
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InitializeConditionVariable((CONDITION_VARIABLE*)systemCondition);
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#else
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int ret;
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systemCondition = new pthread_cond_t;
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ret = pthread_cond_init((pthread_cond_t*)systemCondition, NULL);
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if (ret != 0)
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throw rdr::SystemException("Failed to create condition variable", ret);
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#endif
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}
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Condition::~Condition()
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{
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#ifdef WIN32
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delete (CONDITION_VARIABLE*)systemCondition;
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#else
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pthread_cond_destroy((pthread_cond_t*)systemCondition);
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delete (pthread_cond_t*)systemCondition;
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#endif
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}
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void Condition::wait()
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{
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#ifdef WIN32
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BOOL ret;
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ret = SleepConditionVariableCS((CONDITION_VARIABLE*)systemCondition,
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(CRITICAL_SECTION*)mutex->systemMutex,
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INFINITE);
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if (!ret)
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throw rdr::SystemException("Failed to wait on condition variable", GetLastError());
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#else
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int ret;
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ret = pthread_cond_wait((pthread_cond_t*)systemCondition,
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(pthread_mutex_t*)mutex->systemMutex);
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if (ret != 0)
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throw rdr::SystemException("Failed to wait on condition variable", ret);
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#endif
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}
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void Condition::signal()
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{
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#ifdef WIN32
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WakeConditionVariable((CONDITION_VARIABLE*)systemCondition);
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#else
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int ret;
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ret = pthread_cond_signal((pthread_cond_t*)systemCondition);
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if (ret != 0)
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throw rdr::SystemException("Failed to signal condition variable", ret);
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#endif
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}
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void Condition::broadcast()
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{
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#ifdef WIN32
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WakeAllConditionVariable((CONDITION_VARIABLE*)systemCondition);
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#else
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int ret;
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ret = pthread_cond_broadcast((pthread_cond_t*)systemCondition);
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if (ret != 0)
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throw rdr::SystemException("Failed to broadcast condition variable", ret);
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#endif
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}
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