sim_object.hh revision 5491
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 <iostream> 40#include <list> 41#include <map> 42#include <string> 43#include <vector> 44 45#include "params/SimObject.hh" 46#include "sim/serialize.hh" 47#include "sim/startup.hh" 48 49class BaseCPU; 50class Event; 51 52/* 53 * Abstract superclass for simulation objects. Represents things that 54 * correspond to physical components and can be specified via the 55 * config file (CPUs, caches, etc.). 56 */ 57class SimObject : public Serializable, protected StartupCallback 58{ 59 public: 60 enum State { 61 Running, 62 Draining, 63 Drained 64 }; 65 66 private: 67 State state; 68 69 protected: 70 void changeState(State new_state) { state = new_state; } 71 72 public: 73 State getState() { return state; } 74 75 private: 76 typedef std::vector<SimObject *> SimObjectList; 77 78 // list of all instantiated simulation objects 79 static SimObjectList simObjectList; 80 81 protected: 82 const SimObjectParams *_params; 83 84 public: 85 typedef SimObjectParams Params; 86 const Params *params() const { return _params; } 87 SimObject(const Params *_params); 88 virtual ~SimObject() {} 89 90 protected: 91 // static: support for old-style constructors (call manually) 92 static Params *makeParams(const std::string &name); 93 94 public: 95 96 virtual const std::string name() const { return params()->name; } 97 98 // initialization pass of all objects. 99 // Gets invoked after construction, before unserialize. 100 virtual void init(); 101 static void initAll(); 102 103 // register statistics for this object 104 virtual void regStats(); 105 virtual void regFormulas(); 106 virtual void resetStats(); 107 108 // static: call reg_stats on all SimObjects 109 static void regAllStats(); 110 111 // static: call resetStats on all SimObjects 112 static void resetAllStats(); 113 114 // static: call nameOut() & serialize() on all SimObjects 115 static void serializeAll(std::ostream &); 116 static void unserializeAll(Checkpoint *cp); 117 118 // Methods to drain objects in order to take checkpoints 119 // Or switch from timing -> atomic memory model 120 // Drain returns 0 if the simobject can drain immediately or 121 // the number of times the drain_event's process function will be called 122 // before the object will be done draining. Normally this should be 1 123 virtual unsigned int drain(Event *drain_event); 124 virtual void resume(); 125 virtual void setMemoryMode(State new_mode); 126 virtual void switchOut(); 127 virtual void takeOverFrom(BaseCPU *cpu); 128 129#ifdef DEBUG 130 public: 131 bool doDebugBreak; 132 static void debugObjectBreak(const std::string &objs); 133#endif 134 135 /** 136 * Find the SimObject with the given name and return a pointer to 137 * it. Primarily used for interactive debugging. Argument is 138 * char* rather than std::string to make it callable from gdb. 139 */ 140 static SimObject *find(const char *name); 141 142 public: 143 void recordEvent(const std::string &stat); 144}; 145 146#endif // __SIM_OBJECT_HH__ 147