1/////////////////////////////////////////////////////////////////////////// 2// 3// Copyright (c) 2005, Industrial Light & Magic, a division of Lucas 4// Digital Ltd. LLC 5// 6// All rights reserved. 7// 8// Redistribution and use in source and binary forms, with or without 9// modification, are permitted provided that the following conditions are 10// met: 11// * Redistributions of source code must retain the above copyright 12// notice, this list of conditions and the following disclaimer. 13// * Redistributions in binary form must reproduce the above 14// copyright notice, this list of conditions and the following disclaimer 15// in the documentation and/or other materials provided with the 16// distribution. 17// * Neither the name of Industrial Light & Magic nor the names of 18// its contributors may be used to endorse or promote products derived 19// from this software without specific prior written permission. 20// 21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32// 33/////////////////////////////////////////////////////////////////////////// 34 35//----------------------------------------------------------------------------- 36// 37// class Mutex -- implementation for 38// platforms that support Posix threads 39// 40//----------------------------------------------------------------------------- 41 42#include "IlmBaseConfig.h" 43 44#if HAVE_PTHREAD 45 46#include "IlmThreadMutex.h" 47#include "Iex.h" 48#include <assert.h> 49 50namespace IlmThread { 51 52 53Mutex::Mutex () 54{ 55 if (int error = ::pthread_mutex_init (&_mutex, 0)) 56 Iex::throwErrnoExc ("Cannot initialize mutex (%T).", error); 57} 58 59 60Mutex::~Mutex () 61{ 62 int error = ::pthread_mutex_destroy (&_mutex); 63 assert (error == 0); 64} 65 66 67void 68Mutex::lock () const 69{ 70 if (int error = ::pthread_mutex_lock (&_mutex)) 71 Iex::throwErrnoExc ("Cannot lock mutex (%T).", error); 72} 73 74 75void 76Mutex::unlock () const 77{ 78 if (int error = ::pthread_mutex_unlock (&_mutex)) 79 Iex::throwErrnoExc ("Cannot unlock mutex (%T).", error); 80} 81 82 83} // namespace IlmThread 84 85#endif 86