thread_state.hh revision 6331
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#include "cpu/base.hh" 38 39#if !FULL_SYSTEM 40#include "mem/mem_object.hh" 41#include "sim/process.hh" 42#endif 43 44#if FULL_SYSTEM 45class EndQuiesceEvent; 46class FunctionProfile; 47class ProfileNode; 48namespace TheISA { 49 namespace Kernel { 50 class Statistics; 51 }; 52}; 53#endif 54 55class Checkpoint; 56class Port; 57class TranslatingPort; 58 59/** 60 * Struct for holding general thread state that is needed across CPU 61 * models. This includes things such as pointers to the process, 62 * memory, quiesce events, and certain stats. This can be expanded 63 * to hold more thread-specific stats within it. 64 */ 65struct ThreadState { 66 typedef ThreadContext::Status Status; 67 68#if FULL_SYSTEM 69 ThreadState(BaseCPU *cpu, ThreadID _tid); 70#else 71 ThreadState(BaseCPU *cpu, ThreadID _tid, Process *_process); 72#endif 73 74 ~ThreadState(); 75 76 void serialize(std::ostream &os); 77 78 void unserialize(Checkpoint *cp, const std::string §ion); 79 80 int cpuId() { return baseCpu->cpuId(); } 81 82 int contextId() { return _contextId; } 83 84 void setContextId(int id) { _contextId = id; } 85 86 void setThreadId(ThreadID id) { _threadId = id; } 87 88 ThreadID threadId() { return _threadId; } 89 90 Tick readLastActivate() { return lastActivate; } 91 92 Tick readLastSuspend() { return lastSuspend; } 93 94#if FULL_SYSTEM 95 void connectMemPorts(ThreadContext *tc); 96 97 void connectPhysPort(); 98 99 void connectVirtPort(ThreadContext *tc); 100 101 void dumpFuncProfile(); 102 103 EndQuiesceEvent *getQuiesceEvent() { return quiesceEvent; } 104 105 void profileClear(); 106 107 void profileSample(); 108 109 TheISA::Kernel::Statistics *getKernelStats() { return kernelStats; } 110 111 FunctionalPort *getPhysPort() { return physPort; } 112 113 void setPhysPort(FunctionalPort *port) { physPort = port; } 114 115 VirtualPort *getVirtPort() { return virtPort; } 116#else 117 Process *getProcessPtr() { return process; } 118 119 TranslatingPort *getMemPort(); 120 121 void setMemPort(TranslatingPort *_port) { port = _port; } 122#endif 123 124 /** Sets the current instruction being committed. */ 125 void setInst(TheISA::MachInst _inst) { inst = _inst; } 126 127 /** Returns the current instruction being committed. */ 128 TheISA::MachInst getInst() { return inst; } 129 130 /** Reads the number of instructions functionally executed and 131 * committed. 132 */ 133 Counter readFuncExeInst() { return funcExeInst; } 134 135 /** Sets the total number of instructions functionally executed 136 * and committed. 137 */ 138 void setFuncExeInst(Counter new_val) { funcExeInst = new_val; } 139 140 /** Returns the status of this thread. */ 141 Status status() const { return _status; } 142 143 /** Sets the status of this thread. */ 144 void setStatus(Status new_status) { _status = new_status; } 145 146 public: 147 /** Connects port to the functional port of the memory object 148 * below the CPU. */ 149 void connectToMemFunc(Port *port); 150 151 /** Number of instructions committed. */ 152 Counter numInst; 153 /** Stat for number instructions committed. */ 154 Stats::Scalar numInsts; 155 /** Stat for number of memory references. */ 156 Stats::Scalar numMemRefs; 157 158 /** Number of simulated loads, used for tracking events based on 159 * the number of loads committed. 160 */ 161 Counter numLoad; 162 163 /** The number of simulated loads committed prior to this run. */ 164 Counter startNumLoad; 165 166 protected: 167 ThreadContext::Status _status; 168 169 // Pointer to the base CPU. 170 BaseCPU *baseCpu; 171 172 // system wide HW context id 173 int _contextId; 174 175 // Index of hardware thread context on the CPU that this represents. 176 ThreadID _threadId; 177 178 public: 179 /** Last time activate was called on this thread. */ 180 Tick lastActivate; 181 182 /** Last time suspend was called on this thread. */ 183 Tick lastSuspend; 184 185#if FULL_SYSTEM 186 public: 187 FunctionProfile *profile; 188 ProfileNode *profileNode; 189 Addr profilePC; 190 EndQuiesceEvent *quiesceEvent; 191 192 TheISA::Kernel::Statistics *kernelStats; 193 protected: 194 /** A functional port outgoing only for functional accesses to physical 195 * addresses.*/ 196 FunctionalPort *physPort; 197 198 /** A functional port, outgoing only, for functional accesse to virtual 199 * addresses. */ 200 VirtualPort *virtPort; 201#else 202 TranslatingPort *port; 203 204 Process *process; 205#endif 206 207 /** Current instruction the thread is committing. Only set and 208 * used for DTB faults currently. 209 */ 210 TheISA::MachInst inst; 211 212 public: 213 /** 214 * Temporary storage to pass the source address from copy_load to 215 * copy_store. 216 * @todo Remove this temporary when we have a better way to do it. 217 */ 218 Addr copySrcAddr; 219 /** 220 * Temp storage for the physical source address of a copy. 221 * @todo Remove this temporary when we have a better way to do it. 222 */ 223 Addr copySrcPhysAddr; 224 225 /* 226 * number of executed instructions, for matching with syscall trace 227 * points in EIO files. 228 */ 229 Counter funcExeInst; 230 231 // 232 // Count failed store conditionals so we can warn of apparent 233 // application deadlock situations. 234 unsigned storeCondFailures; 235}; 236 237#endif // __CPU_THREAD_STATE_HH__ 238