thread_state.hh revision 2689
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/isa_traits.hh" 35#include "cpu/thread_context.hh" 36 37#if !FULL_SYSTEM 38#include "mem/mem_object.hh" 39#include "mem/translating_port.hh" 40#include "sim/process.hh" 41#endif 42 43#if FULL_SYSTEM 44class EndQuiesceEvent; 45class FunctionProfile; 46class ProfileNode; 47namespace Kernel { 48 class Statistics; 49}; 50#endif 51 52/** 53 * Struct for holding general thread state that is needed across CPU 54 * models. This includes things such as pointers to the process, 55 * memory, quiesce events, and certain stats. This can be expanded 56 * to hold more thread-specific stats within it. 57 */ 58struct ThreadState { 59 typedef ThreadContext::Status Status; 60 61#if FULL_SYSTEM 62 ThreadState(int _cpuId, int _tid); 63#else 64 ThreadState(int _cpuId, int _tid, MemObject *mem, 65 Process *_process, short _asid); 66#endif 67 68 void setCpuId(int id) { cpuId = id; } 69 70 int readCpuId() { return cpuId; } 71 72 void setTid(int id) { tid = id; } 73 74 int readTid() { return tid; } 75 76 Tick readLastActivate() { return lastActivate; } 77 78 Tick readLastSuspend() { return lastSuspend; } 79 80#if FULL_SYSTEM 81 void dumpFuncProfile(); 82 83 EndQuiesceEvent *getQuiesceEvent() { return quiesceEvent; } 84 85 void profileClear(); 86 87 void profileSample(); 88 89 Kernel::Statistics *getKernelStats() { return kernelStats; } 90 91 void setPhysPort(FunctionalPort *port) { physPort = port; } 92 93 void setVirtPort(VirtualPort *port) { virtPort = port; } 94#else 95 Process *getProcessPtr() { return process; } 96 97 TranslatingPort *getMemPort() { return port; } 98 99 void setMemPort(TranslatingPort *_port) { port = _port; } 100 101 int getInstAsid() { return asid; } 102 int getDataAsid() { return asid; } 103#endif 104 105 /** Sets the current instruction being committed. */ 106 void setInst(TheISA::MachInst _inst) { inst = _inst; } 107 108 /** Returns the current instruction being committed. */ 109 TheISA::MachInst getInst() { return inst; } 110 111 /** Reads the number of instructions functionally executed and 112 * committed. 113 */ 114 Counter readFuncExeInst() { return funcExeInst; } 115 116 /** Sets the total number of instructions functionally executed 117 * and committed. 118 */ 119 void setFuncExeInst(Counter new_val) { funcExeInst = new_val; } 120 121 /** Returns the status of this thread. */ 122 Status status() const { return _status; } 123 124 /** Sets the status of this thread. */ 125 void setStatus(Status new_status) { _status = new_status; } 126 127 /** Number of instructions committed. */ 128 Counter numInst; 129 /** Stat for number instructions committed. */ 130 Stats::Scalar<> numInsts; 131 /** Stat for number of memory references. */ 132 Stats::Scalar<> numMemRefs; 133 134 /** Number of simulated loads, used for tracking events based on 135 * the number of loads committed. 136 */ 137 Counter numLoad; 138 139 /** The number of simulated loads committed prior to this run. */ 140 Counter startNumLoad; 141 142 protected: 143 ThreadContext::Status _status; 144 145 // ID of this context w.r.t. the System or Process object to which 146 // it belongs. For full-system mode, this is the system CPU ID. 147 int cpuId; 148 149 // Index of hardware thread context on the CPU that this represents. 150 int tid; 151 152 /** Last time activate was called on this thread. */ 153 Tick lastActivate; 154 155 /** Last time suspend was called on this thread. */ 156 Tick lastSuspend; 157 158#if FULL_SYSTEM 159 public: 160 FunctionProfile *profile; 161 ProfileNode *profileNode; 162 Addr profilePC; 163 EndQuiesceEvent *quiesceEvent; 164 165 Kernel::Statistics *kernelStats; 166 protected: 167 /** A functional port outgoing only for functional accesses to physical 168 * addresses.*/ 169 FunctionalPort *physPort; 170 171 /** A functional port, outgoing only, for functional accesse to virtual 172 * addresses. That doen't require execution context information */ 173 VirtualPort *virtPort; 174#else 175 TranslatingPort *port; 176 177 Process *process; 178 179 // Address space ID. Note that this is used for TIMING cache 180 // simulation only; all functional memory accesses should use 181 // one of the FunctionalMemory pointers above. 182 short asid; 183#endif 184 185 /** Current instruction the thread is committing. Only set and 186 * used for DTB faults currently. 187 */ 188 TheISA::MachInst inst; 189 190 /** 191 * Temporary storage to pass the source address from copy_load to 192 * copy_store. 193 * @todo Remove this temporary when we have a better way to do it. 194 */ 195 Addr copySrcAddr; 196 /** 197 * Temp storage for the physical source address of a copy. 198 * @todo Remove this temporary when we have a better way to do it. 199 */ 200 Addr copySrcPhysAddr; 201 202 public: 203 /* 204 * number of executed instructions, for matching with syscall trace 205 * points in EIO files. 206 */ 207 Counter funcExeInst; 208 209 // 210 // Count failed store conditionals so we can warn of apparent 211 // application deadlock situations. 212 unsigned storeCondFailures; 213}; 214 215#endif // __CPU_THREAD_STATE_HH__ 216