thread_state.hh revision 3126
1/* 2 * Copyright (c) 2006 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: Kevin Lim 29 */ 30 31#ifndef __CPU_THREAD_STATE_HH__ 32#define __CPU_THREAD_STATE_HH__ 33 34#include "arch/types.hh" 35#include "cpu/profile.hh" 36#include "cpu/thread_context.hh" 37 38#if !FULL_SYSTEM 39#include "mem/mem_object.hh" 40#include "mem/translating_port.hh" 41#include "sim/process.hh" 42#endif 43 44#if FULL_SYSTEM 45class EndQuiesceEvent; 46class FunctionProfile; 47class ProfileNode; 48namespace Kernel { 49 class Statistics; 50}; 51#endif 52 53class Checkpoint; 54 55/** 56 * Struct for holding general thread state that is needed across CPU 57 * models. This includes things such as pointers to the process, 58 * memory, quiesce events, and certain stats. This can be expanded 59 * to hold more thread-specific stats within it. 60 */ 61struct ThreadState { 62 typedef ThreadContext::Status Status; 63 64#if FULL_SYSTEM 65 ThreadState(int _cpuId, int _tid); 66#else 67 ThreadState(int _cpuId, int _tid, Process *_process, 68 short _asid, MemObject *mem); 69#endif 70 71 void serialize(std::ostream &os); 72 73 void unserialize(Checkpoint *cp, const std::string §ion); 74 75 void setCpuId(int id) { cpuId = id; } 76 77 int readCpuId() { return cpuId; } 78 79 void setTid(int id) { tid = id; } 80 81 int readTid() { return tid; } 82 83 Tick readLastActivate() { return lastActivate; } 84 85 Tick readLastSuspend() { return lastSuspend; } 86 87#if FULL_SYSTEM 88 void dumpFuncProfile(); 89 90 EndQuiesceEvent *getQuiesceEvent() { return quiesceEvent; } 91 92 void profileClear(); 93 94 void profileSample(); 95 96 Kernel::Statistics *getKernelStats() { return kernelStats; } 97 98 FunctionalPort *getPhysPort() { return physPort; } 99 100 void setPhysPort(FunctionalPort *port) { physPort = port; } 101 102 VirtualPort *getVirtPort(ThreadContext *tc = NULL) { return virtPort; } 103 104 void setVirtPort(VirtualPort *port) { virtPort = port; } 105#else 106 Process *getProcessPtr() { return process; } 107 108 TranslatingPort *getMemPort() { return port; } 109 110 void setMemPort(TranslatingPort *_port) { port = _port; } 111 112 int getInstAsid() { return asid; } 113 int getDataAsid() { return asid; } 114#endif 115 116 /** Sets the current instruction being committed. */ 117 void setInst(TheISA::MachInst _inst) { inst = _inst; } 118 119 /** Returns the current instruction being committed. */ 120 TheISA::MachInst getInst() { return inst; } 121 122 /** Reads the number of instructions functionally executed and 123 * committed. 124 */ 125 Counter readFuncExeInst() { return funcExeInst; } 126 127 /** Sets the total number of instructions functionally executed 128 * and committed. 129 */ 130 void setFuncExeInst(Counter new_val) { funcExeInst = new_val; } 131 132 /** Returns the status of this thread. */ 133 Status status() const { return _status; } 134 135 /** Sets the status of this thread. */ 136 void setStatus(Status new_status) { _status = new_status; } 137 138 /** Number of instructions committed. */ 139 Counter numInst; 140 /** Stat for number instructions committed. */ 141 Stats::Scalar<> numInsts; 142 /** Stat for number of memory references. */ 143 Stats::Scalar<> numMemRefs; 144 145 /** Number of simulated loads, used for tracking events based on 146 * the number of loads committed. 147 */ 148 Counter numLoad; 149 150 /** The number of simulated loads committed prior to this run. */ 151 Counter startNumLoad; 152 153 protected: 154 ThreadContext::Status _status; 155 156 // ID of this context w.r.t. the System or Process object to which 157 // it belongs. For full-system mode, this is the system CPU ID. 158 int cpuId; 159 160 // Index of hardware thread context on the CPU that this represents. 161 int tid; 162 163 public: 164 /** Last time activate was called on this thread. */ 165 Tick lastActivate; 166 167 /** Last time suspend was called on this thread. */ 168 Tick lastSuspend; 169 170#if FULL_SYSTEM 171 public: 172 FunctionProfile *profile; 173 ProfileNode *profileNode; 174 Addr profilePC; 175 EndQuiesceEvent *quiesceEvent; 176 177 Kernel::Statistics *kernelStats; 178 protected: 179 /** A functional port outgoing only for functional accesses to physical 180 * addresses.*/ 181 FunctionalPort *physPort; 182 183 /** A functional port, outgoing only, for functional accesse to virtual 184 * addresses. That doen't require execution context information */ 185 VirtualPort *virtPort; 186#else 187 TranslatingPort *port; 188 189 Process *process; 190 191 // Address space ID. Note that this is used for TIMING cache 192 // simulation only; all functional memory accesses should use 193 // one of the FunctionalMemory pointers above. 194 short asid; 195 196#endif 197 198 /** Current instruction the thread is committing. Only set and 199 * used for DTB faults currently. 200 */ 201 TheISA::MachInst inst; 202 203 public: 204 /** 205 * Temporary storage to pass the source address from copy_load to 206 * copy_store. 207 * @todo Remove this temporary when we have a better way to do it. 208 */ 209 Addr copySrcAddr; 210 /** 211 * Temp storage for the physical source address of a copy. 212 * @todo Remove this temporary when we have a better way to do it. 213 */ 214 Addr copySrcPhysAddr; 215 216 /* 217 * number of executed instructions, for matching with syscall trace 218 * points in EIO files. 219 */ 220 Counter funcExeInst; 221 222 // 223 // Count failed store conditionals so we can warn of apparent 224 // application deadlock situations. 225 unsigned storeCondFailures; 226}; 227 228#endif // __CPU_THREAD_STATE_HH__ 229