/* * Copyright (c) 2002 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /*! * @header DSMutexSemaphore * Implementation of the DSMutexSemaphore ( mutually exclusive lock ) class. */ #include <errno.h> #include <sys/time.h> // for struct timespec and gettimeofday() #include "DSMutexSemaphore.h" //-------------------------------------------------------------------------------------------------- // DSMutexSemaphore class implementation //-------------------------------------------------------------------------------------------------- DSMutexSemaphore::DSMutexSemaphore ( bool owned ) : DSSemaphore ( owned ? 0 : 1 ), mOwner ( owned ? ::pthread_self() : NULL ) { pthread_mutexattr_t mutexType; pthread_mutexattr_init( &mutexType ); pthread_mutexattr_settype( &mutexType, PTHREAD_MUTEX_RECURSIVE ); pthread_mutex_init( &mConditionLock, &mutexType ); pthread_mutexattr_destroy( &mutexType ); } DSMutexSemaphore::~DSMutexSemaphore ( void ) { } void DSMutexSemaphore::Signal ( void ) { pthread_mutex_unlock ( &mConditionLock ); } // Signal sInt32 DSMutexSemaphore::Wait ( sInt32 milliSecs ) { pthread_mutex_lock ( &mConditionLock ); return( semNoErr ); } // Wait