sim_events.cc revision 9356
1/* 2 * Copyright (c) 2002-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 */ 30 31#include <string> 32 33#include "base/callback.hh" 34#include "base/hostinfo.hh" 35#include "sim/eventq_impl.hh" 36#include "sim/sim_events.hh" 37#include "sim/sim_exit.hh" 38#include "sim/stats.hh" 39 40using namespace std; 41 42SimLoopExitEvent::SimLoopExitEvent(const std::string &_cause, int c, Tick r) 43 : Event(Sim_Exit_Pri, IsExitEvent), cause(_cause), code(c), repeat(r) 44{ 45} 46 47 48// 49// handle termination event 50// 51void 52SimLoopExitEvent::process() 53{ 54 // if this got scheduled on a different queue (e.g. the committed 55 // instruction queue) then make a corresponding event on the main 56 // queue. 57 if (!isFlagSet(IsMainQueue)) { 58 exitSimLoop(cause, code); 59 setFlags(AutoDelete); 60 } 61 62 // otherwise do nothing... the IsExitEvent flag takes care of 63 // exiting the simulation loop and returning this object to Python 64 65 // but if you are doing this on intervals, don't forget to make another 66 if (repeat) { 67 assert(isFlagSet(IsMainQueue)); 68 mainEventQueue.schedule(this, curTick() + repeat); 69 } 70} 71 72 73const char * 74SimLoopExitEvent::description() const 75{ 76 return "simulation loop exit"; 77} 78 79void 80exitSimLoop(const std::string &message, int exit_code, Tick when, Tick repeat) 81{ 82 Event *event = new SimLoopExitEvent(message, exit_code, repeat); 83 mainEventQueue.schedule(event, when); 84} 85 86// 87// constructor: automatically schedules at specified time 88// 89CountedExitEvent::CountedExitEvent(const std::string &_cause, int &counter) 90 : Event(Sim_Exit_Pri), cause(_cause), downCounter(counter) 91{ 92 // catch stupid mistakes 93 assert(downCounter > 0); 94} 95 96 97// 98// handle termination event 99// 100void 101CountedExitEvent::process() 102{ 103 if (--downCounter == 0) { 104 exitSimLoop(cause, 0); 105 } 106} 107 108 109const char * 110CountedExitEvent::description() const 111{ 112 return "counted exit"; 113} 114