cpuevent.hh revision 2734
12651Ssaidi@eecs.umich.edu/* 22651Ssaidi@eecs.umich.edu * Copyright (c) 2006 The Regents of The University of Michigan 32651Ssaidi@eecs.umich.edu * All rights reserved. 42651Ssaidi@eecs.umich.edu * 52651Ssaidi@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 62651Ssaidi@eecs.umich.edu * modification, are permitted provided that the following conditions are 72651Ssaidi@eecs.umich.edu * met: redistributions of source code must retain the above copyright 82651Ssaidi@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 92651Ssaidi@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 102651Ssaidi@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 112651Ssaidi@eecs.umich.edu * documentation and/or other materials provided with the distribution; 122651Ssaidi@eecs.umich.edu * neither the name of the copyright holders nor the names of its 132651Ssaidi@eecs.umich.edu * contributors may be used to endorse or promote products derived from 142651Ssaidi@eecs.umich.edu * this software without specific prior written permission. 152651Ssaidi@eecs.umich.edu * 162651Ssaidi@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172651Ssaidi@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182651Ssaidi@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192651Ssaidi@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202651Ssaidi@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212651Ssaidi@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222651Ssaidi@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232651Ssaidi@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242651Ssaidi@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252651Ssaidi@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262651Ssaidi@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272651Ssaidi@eecs.umich.edu * 282651Ssaidi@eecs.umich.edu * Authors: Ali Saidi 292651Ssaidi@eecs.umich.edu */ 302651Ssaidi@eecs.umich.edu 312651Ssaidi@eecs.umich.edu#ifndef __CPU_CPUEVENT_HH__ 322651Ssaidi@eecs.umich.edu#define __CPU_CPUEVENT_HH__ 332651Ssaidi@eecs.umich.edu 342651Ssaidi@eecs.umich.edu#include <vector> 352651Ssaidi@eecs.umich.edu#include "sim/eventq.hh" 362651Ssaidi@eecs.umich.edu 372680Sktlim@umich.educlass ThreadContext; 382651Ssaidi@eecs.umich.edu 392734Sktlim@umich.edu/** This class creates a global list of events that need a pointer to a 402680Sktlim@umich.edu * thread context. When a switchover takes place the events can be migrated 412680Sktlim@umich.edu * to the new thread context, otherwise you could have a wake timer interrupt 422651Ssaidi@eecs.umich.edu * go off on a switched out cpu or other unfortunate events. This object MUST be 432651Ssaidi@eecs.umich.edu * dynamically allocated to avoid it being deleted after a cpu switch happens. 442651Ssaidi@eecs.umich.edu * */ 452651Ssaidi@eecs.umich.educlass CpuEvent : public Event 462651Ssaidi@eecs.umich.edu{ 472651Ssaidi@eecs.umich.edu private: 482651Ssaidi@eecs.umich.edu /** type of global list of cpu events. */ 492651Ssaidi@eecs.umich.edu typedef std::vector<CpuEvent *> CpuEventList; 502651Ssaidi@eecs.umich.edu 512651Ssaidi@eecs.umich.edu /** Static list of cpu events that is searched every time a cpu switch 522651Ssaidi@eecs.umich.edu * happens. */ 532651Ssaidi@eecs.umich.edu static CpuEventList cpuEventList; 542651Ssaidi@eecs.umich.edu 552680Sktlim@umich.edu /** The thread context that is switched to the new cpus. */ 562680Sktlim@umich.edu ThreadContext *tc; 572651Ssaidi@eecs.umich.edu 582651Ssaidi@eecs.umich.edu public: 592680Sktlim@umich.edu CpuEvent(EventQueue *q, ThreadContext *_tc, Priority p = Default_Pri) 602680Sktlim@umich.edu : Event(q, p), tc(_tc) 612651Ssaidi@eecs.umich.edu { cpuEventList.push_back(this); } 622651Ssaidi@eecs.umich.edu 632651Ssaidi@eecs.umich.edu /** delete the cpu event from the global list. */ 642651Ssaidi@eecs.umich.edu ~CpuEvent(); 652651Ssaidi@eecs.umich.edu 662680Sktlim@umich.edu /** Update all events switching old tc to new tc. 672680Sktlim@umich.edu * @param oldTc the old thread context we are switching from 682680Sktlim@umich.edu * @param newTc the new thread context we are switching to. 692651Ssaidi@eecs.umich.edu */ 702680Sktlim@umich.edu static void replaceThreadContext(ThreadContext *oldTc, 712680Sktlim@umich.edu ThreadContext *newTc); 722651Ssaidi@eecs.umich.edu}; 732651Ssaidi@eecs.umich.edu 742680Sktlim@umich.edutemplate <class T, void (T::* F)(ThreadContext *tc)> 752651Ssaidi@eecs.umich.educlass CpuEventWrapper : public CpuEvent 762651Ssaidi@eecs.umich.edu{ 772651Ssaidi@eecs.umich.edu private: 782651Ssaidi@eecs.umich.edu T *object; 792651Ssaidi@eecs.umich.edu 802651Ssaidi@eecs.umich.edu public: 812680Sktlim@umich.edu CpuEventWrapper(T *obj, ThreadContext *_tc, EventQueue *q = &mainEventQueue, 822651Ssaidi@eecs.umich.edu Priority p = Default_Pri) 832680Sktlim@umich.edu : CpuEvent(q, _tc, p), object(obj) 842651Ssaidi@eecs.umich.edu { } 852680Sktlim@umich.edu void process() { (object->*F)(tc); } 862651Ssaidi@eecs.umich.edu}; 872651Ssaidi@eecs.umich.edu 882651Ssaidi@eecs.umich.edu#endif // __CPU_CPUEVENT_HH__ 892651Ssaidi@eecs.umich.edu 90