thread_state.hh revision 2330
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 29#ifndef __CPU_THREAD_STATE_HH__ 30#define __CPU_THREAD_STATE_HH__ 31 32#include "cpu/exec_context.hh" 33 34#if FULL_SYSTEM 35class EndQuiesceEvent; 36class FunctionProfile; 37class ProfileNode; 38namespace Kernel { 39 class Statistics; 40}; 41#else 42class FunctionalMemory; 43class Process; 44#endif 45 46/** 47 * Struct for holding general thread state that is needed across CPU 48 * models. This includes things such as pointers to the process, 49 * memory, quiesce events, and certain stats. This can be expanded 50 * to hold more thread-specific stats within it. 51 */ 52struct ThreadState { 53#if FULL_SYSTEM 54 ThreadState(int _cpuId, int _tid, FunctionalMemory *_mem) 55 : cpuId(_cpuId), tid(_tid), mem(_mem), lastActivate(0), lastSuspend(0), 56 profile(NULL), profileNode(NULL), profilePC(0), quiesceEvent(NULL) 57#else 58 ThreadState(int _cpuId, int _tid, FunctionalMemory *_mem, 59 Process *_process, short _asid) 60 : cpuId(_cpuId), tid(_tid), mem(_mem), process(_process), asid(_asid) 61#endif 62 { 63 funcExeInst = 0; 64 storeCondFailures = 0; 65 } 66 67 ExecContext::Status status; 68 69 int cpuId; 70 71 // Index of hardware thread context on the CPU that this represents. 72 int tid; 73 74 Counter numInst; 75 Stats::Scalar<> numInsts; 76 Stats::Scalar<> numMemRefs; 77 78 // number of simulated loads 79 Counter numLoad; 80 Counter startNumLoad; 81 82 FunctionalMemory *mem; // functional storage for process address space 83 84#if FULL_SYSTEM 85 Tick lastActivate; 86 Tick lastSuspend; 87 88 FunctionProfile *profile; 89 ProfileNode *profileNode; 90 Addr profilePC; 91 92 EndQuiesceEvent *quiesceEvent; 93 94 Kernel::Statistics *kernelStats; 95#else 96 Process *process; 97 98 // Address space ID. Note that this is used for TIMING cache 99 // simulation only; all functional memory accesses should use 100 // one of the FunctionalMemory pointers above. 101 short asid; 102 103#endif 104 105 /** 106 * Temporary storage to pass the source address from copy_load to 107 * copy_store. 108 * @todo Remove this temporary when we have a better way to do it. 109 */ 110 Addr copySrcAddr; 111 /** 112 * Temp storage for the physical source address of a copy. 113 * @todo Remove this temporary when we have a better way to do it. 114 */ 115 Addr copySrcPhysAddr; 116 117 /* 118 * number of executed instructions, for matching with syscall trace 119 * points in EIO files. 120 */ 121 Counter funcExeInst; 122 123 // 124 // Count failed store conditionals so we can warn of apparent 125 // application deadlock situations. 126 unsigned storeCondFailures; 127}; 128 129#endif // __CPU_THREAD_STATE_HH__ 130