sim_object.hh revision 2901
1/* 2 * Copyright (c) 2001-2005 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: Steve Reinhardt 29 * Nathan Binkert 30 */ 31 32/* @file 33 * User Console Definitions 34 */ 35 36#ifndef __SIM_OBJECT_HH__ 37#define __SIM_OBJECT_HH__ 38 39#include <map> 40#include <list> 41#include <vector> 42#include <iostream> 43 44#include "sim/serialize.hh" 45#include "sim/startup.hh" 46 47class BaseCPU; 48class Event; 49 50/* 51 * Abstract superclass for simulation objects. Represents things that 52 * correspond to physical components and can be specified via the 53 * config file (CPUs, caches, etc.). 54 */ 55class SimObject : public Serializable, protected StartupCallback 56{ 57 public: 58 struct Params { 59 std::string name; 60 }; 61 62 enum State { 63 Running, 64 Draining, 65 Drained 66 }; 67 private: 68 State state; 69 70 protected: 71 Params *_params; 72 73 void changeState(State new_state) { state = new_state; } 74 75 public: 76 const Params *params() const { return _params; } 77 78 State getState() { return state; } 79 80 private: 81 typedef std::vector<SimObject *> SimObjectList; 82 83 // list of all instantiated simulation objects 84 static SimObjectList simObjectList; 85 86 public: 87 SimObject(Params *_params); 88 SimObject(const std::string &_name); 89 90 virtual ~SimObject() {} 91 92 virtual const std::string name() const { return params()->name; } 93 94 // initialization pass of all objects. 95 // Gets invoked after construction, before unserialize. 96 virtual void init(); 97 virtual void connect(); 98 static void initAll(); 99 static void connectAll(); 100 101 // register statistics for this object 102 virtual void regStats(); 103 virtual void regFormulas(); 104 virtual void resetStats(); 105 106 // static: call reg_stats on all SimObjects 107 static void regAllStats(); 108 109 // static: call resetStats on all SimObjects 110 static void resetAllStats(); 111 112 // static: call nameOut() & serialize() on all SimObjects 113 static void serializeAll(std::ostream &); 114 static void unserializeAll(Checkpoint *cp); 115 116 // Methods to drain objects in order to take checkpoints 117 // Or switch from timing -> atomic memory model 118 // Drain returns 0 if the simobject can drain immediately or 119 // the number of times the drain_event's process function will be called 120 // before the object will be done draining. Normally this should be 1 121 virtual unsigned int drain(Event *drain_event); 122 virtual void resume(); 123 virtual void setMemoryMode(State new_mode); 124 virtual void switchOut(); 125 virtual void takeOverFrom(BaseCPU *cpu); 126 127#ifdef DEBUG 128 public: 129 bool doDebugBreak; 130 static void debugObjectBreak(const std::string &objs); 131#endif 132 133 public: 134 bool doRecordEvent; 135 void recordEvent(const std::string &stat); 136}; 137 138#endif // __SIM_OBJECT_HH__ 139