sim_events.cc revision 5606
12SN/A/* 21762SN/A * Copyright (c) 2002-2005 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Nathan Binkert 292SN/A */ 302SN/A 312SN/A#include <string> 322SN/A 33601SN/A#include "base/callback.hh" 34601SN/A#include "base/hostinfo.hh" 35601SN/A#include "sim/eventq.hh" 3656SN/A#include "sim/sim_events.hh" 3756SN/A#include "sim/sim_exit.hh" 381127SN/A#include "sim/startup.hh" 39695SN/A#include "sim/stats.hh" 402SN/A 412SN/Ausing namespace std; 422SN/A 435606Snate@binkert.orgSimLoopExitEvent::SimLoopExitEvent(const std::string &_cause, int c, Tick r) 445606Snate@binkert.org : Event(Sim_Exit_Pri), cause(_cause), code(c), repeat(r) 455606Snate@binkert.org{ 465606Snate@binkert.org setFlags(IsExitEvent); 475606Snate@binkert.org} 485606Snate@binkert.org 495606Snate@binkert.org 502SN/A// 512SN/A// handle termination event 522SN/A// 532SN/Avoid 542667Sstever@eecs.umich.eduSimLoopExitEvent::process() 552SN/A{ 562667Sstever@eecs.umich.edu // if this got scheduled on a different queue (e.g. the committed 572667Sstever@eecs.umich.edu // instruction queue) then make a corresponding event on the main 582667Sstever@eecs.umich.edu // queue. 595606Snate@binkert.org if (!getFlags(IsMainQueue)) { 602667Sstever@eecs.umich.edu exitSimLoop(cause, code); 612SN/A delete this; 622SN/A } 632667Sstever@eecs.umich.edu 642667Sstever@eecs.umich.edu // otherwise do nothing... the IsExitEvent flag takes care of 652667Sstever@eecs.umich.edu // exiting the simulation loop and returning this object to Python 663144Shsul@eecs.umich.edu 673144Shsul@eecs.umich.edu // but if you are doing this on intervals, don't forget to make another 683144Shsul@eecs.umich.edu if (repeat) { 695606Snate@binkert.org assert(getFlags(IsMainQueue)); 705606Snate@binkert.org mainEventQueue.schedule(this, curTick + repeat); 713144Shsul@eecs.umich.edu } 722SN/A} 732SN/A 742SN/A 752SN/Aconst char * 765336Shines@cs.fsu.eduSimLoopExitEvent::description() const 772SN/A{ 782667Sstever@eecs.umich.edu return "simulation loop exit"; 792667Sstever@eecs.umich.edu} 802667Sstever@eecs.umich.edu 812667Sstever@eecs.umich.eduvoid 822667Sstever@eecs.umich.eduexitSimLoop(const std::string &message, int exit_code) 832667Sstever@eecs.umich.edu{ 845606Snate@binkert.org Event *event = new SimLoopExitEvent(message, exit_code); 855606Snate@binkert.org mainEventQueue.schedule(event, curTick); 862SN/A} 872SN/A 885606Snate@binkert.orgCountedDrainEvent::CountedDrainEvent() 895606Snate@binkert.org : SimLoopExitEvent("Finished drain", 0), count(0) 905606Snate@binkert.org{ } 915606Snate@binkert.org 922797Sktlim@umich.eduvoid 932839Sktlim@umich.eduCountedDrainEvent::process() 942797Sktlim@umich.edu{ 955606Snate@binkert.org if (--count == 0) 965606Snate@binkert.org exitSimLoop(cause, code); 972797Sktlim@umich.edu} 982797Sktlim@umich.edu 992SN/A// 1002SN/A// constructor: automatically schedules at specified time 1012SN/A// 1025606Snate@binkert.orgCountedExitEvent::CountedExitEvent(const std::string &_cause, int &counter) 1035606Snate@binkert.org : Event(Sim_Exit_Pri), cause(_cause), downCounter(counter) 1042SN/A{ 1052SN/A // catch stupid mistakes 1062SN/A assert(downCounter > 0); 1072SN/A} 1082SN/A 1092SN/A 1102SN/A// 1112SN/A// handle termination event 1122SN/A// 1132SN/Avoid 1142SN/ACountedExitEvent::process() 1152SN/A{ 1162SN/A if (--downCounter == 0) { 1172667Sstever@eecs.umich.edu exitSimLoop(cause, 0); 1182SN/A } 1192SN/A} 1202SN/A 1212SN/A 1222SN/Aconst char * 1235336Shines@cs.fsu.eduCountedExitEvent::description() const 1242SN/A{ 1252SN/A return "counted exit"; 1262SN/A} 1272SN/A 1285606Snate@binkert.orgCheckSwapEvent::CheckSwapEvent(int ival) 1295606Snate@binkert.org : interval(ival) 1305606Snate@binkert.org{ 1315606Snate@binkert.org mainEventQueue.schedule(this, curTick + interval); 1325606Snate@binkert.org} 1332SN/A 1342SN/Avoid 1352SN/ACheckSwapEvent::process() 1362SN/A{ 1372SN/A /* Check the amount of free swap space */ 1382SN/A long swap; 1392SN/A 1402SN/A /* returns free swap in KBytes */ 14152SN/A swap = procInfo("/proc/meminfo", "SwapFree:"); 1422SN/A 1432SN/A if (swap < 1000) 1442SN/A ccprintf(cerr, "\a\a\aWarning! Swap space is low (%d)\n", swap); 1452SN/A 1462SN/A if (swap < 100) { 1472SN/A cerr << "\a\aAborting Simulation! Inadequate swap space!\n\n"; 1482667Sstever@eecs.umich.edu exitSimLoop("Lack of swap space"); 1492SN/A } 1502SN/A 1515606Snate@binkert.org assert(getFlags(IsMainQueue)); 1525606Snate@binkert.org mainEventQueue.schedule(this, curTick + interval); 1532SN/A} 1542SN/A 1552SN/Aconst char * 1565336Shines@cs.fsu.eduCheckSwapEvent::description() const 1572SN/A{ 1582SN/A return "check swap"; 1592SN/A} 160