00001 /* 00002 * MaceTime.cc : part of the Mace toolkit for building distributed systems 00003 * 00004 * Copyright (c) 2007, Charles Killian, Dejan Kostic, Ryan Braud, James W. Anderson, John Fisher-Ogden, Calvin Hubble, Duy Nguyen, Justin Burke, David Oppenheimer, Amin Vahdat, Adolfo Rodriguez, Sooraj Bhat 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions are met: 00009 * 00010 * * Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 * * Redistributions in binary form must reproduce the above copyright 00013 * notice, this list of conditions and the following disclaimer in 00014 * the documentation and/or other materials provided with the 00015 * distribution. 00016 * * Neither the names of Duke University nor The University of 00017 * California, San Diego, nor the names of the authors or contributors 00018 * may be used to endorse or promote products derived from 00019 * this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00022 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00023 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00024 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 00025 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00026 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 00027 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00028 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00029 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 00030 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 * 00032 * ----END-OF-LEGAL-STUFF---- */ 00033 #include "MaceTime.h" 00034 00035 bool mace::MaceTime::simulated = false; 00036 mace::MonotoneTimeImpl *mace::MonotoneTimeImpl::mt = NULL; 00037 mace::MonotoneTimeInit mace::MonotoneTimeInit::init; 00038 // uint64_t mace::MaceTime::timeofday = 1000000000; 00039 00040 00041 pthread_key_t mace::LogicalClock::ThreadSpecific::pkey; 00042 pthread_once_t mace::LogicalClock::ThreadSpecific::keyOnce = PTHREAD_ONCE_INIT; 00043 mace::LogicalClock* mace::LogicalClock::inst = NULL; 00044 00045 mace::LogicalClock::ThreadSpecific::ThreadSpecific() : pending(0) { 00046 } // ThreadSpecific 00047 00048 mace::LogicalClock::ThreadSpecific::~ThreadSpecific() { 00049 } // ~ThreadSpecific 00050 00051 mace::LogicalClock::ThreadSpecific* mace::LogicalClock::ThreadSpecific::init() { 00052 pthread_once(&keyOnce, mace::LogicalClock::ThreadSpecific::initKey); 00053 ThreadSpecific* t = (ThreadSpecific*)pthread_getspecific(pkey); 00054 if (t == 0) { 00055 t = new ThreadSpecific(); 00056 assert(pthread_setspecific(pkey, t) == 0); 00057 } 00058 00059 return t; 00060 } // init 00061 00062 void mace::LogicalClock::ThreadSpecific::initKey() { 00063 assert(pthread_key_create(&pkey, NULL) == 0); 00064 } // initKey 00065 00066 mace::LogicalClock::lclock_t mace::LogicalClock::ThreadSpecific::getPendingClock() { 00067 ThreadSpecific* t = (ThreadSpecific*)init(); 00068 return t->pending; 00069 } // getVtid 00070 00071 void mace::LogicalClock::ThreadSpecific::setPendingClock(lclock_t val) { 00072 ThreadSpecific* t = (ThreadSpecific*)init(); 00073 t->pending = std::max(t->pending, val); 00074 } // getVtid 00075