thread_state.cc revision 10537:47fe87b0cf97
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#include "arch/kernel_stats.hh" 32#include "base/output.hh" 33#include "cpu/base.hh" 34#include "cpu/profile.hh" 35#include "cpu/quiesce_event.hh" 36#include "cpu/thread_state.hh" 37#include "mem/fs_translating_port_proxy.hh" 38#include "mem/port.hh" 39#include "mem/port_proxy.hh" 40#include "mem/se_translating_port_proxy.hh" 41#include "sim/full_system.hh" 42#include "sim/serialize.hh" 43#include "sim/system.hh" 44 45ThreadState::ThreadState(BaseCPU *cpu, ThreadID _tid, Process *_process) 46 : numInst(0), numOp(0), numLoad(0), startNumLoad(0), 47 _status(ThreadContext::Halted), baseCpu(cpu), 48 _contextId(0), _threadId(_tid), lastActivate(0), lastSuspend(0), 49 profile(NULL), profileNode(NULL), profilePC(0), quiesceEvent(NULL), 50 kernelStats(NULL), process(_process), physProxy(NULL), virtProxy(NULL), 51 proxy(NULL), funcExeInst(0), storeCondFailures(0) 52{ 53} 54 55ThreadState::~ThreadState() 56{ 57 if (physProxy != NULL) 58 delete physProxy; 59 if (virtProxy != NULL) 60 delete virtProxy; 61 if (proxy != NULL) 62 delete proxy; 63} 64 65void 66ThreadState::serialize(std::ostream &os) 67{ 68 SERIALIZE_ENUM(_status); 69 // thread_num and cpu_id are deterministic from the config 70 SERIALIZE_SCALAR(funcExeInst); 71 72 if (!FullSystem) 73 return; 74 75 Tick quiesceEndTick = 0; 76 if (quiesceEvent->scheduled()) 77 quiesceEndTick = quiesceEvent->when(); 78 SERIALIZE_SCALAR(quiesceEndTick); 79 if (kernelStats) 80 kernelStats->serialize(os); 81} 82 83void 84ThreadState::unserialize(Checkpoint *cp, const std::string §ion) 85{ 86 87 UNSERIALIZE_ENUM(_status); 88 // thread_num and cpu_id are deterministic from the config 89 UNSERIALIZE_SCALAR(funcExeInst); 90 91 if (!FullSystem) 92 return; 93 94 Tick quiesceEndTick; 95 UNSERIALIZE_SCALAR(quiesceEndTick); 96 if (quiesceEndTick) 97 baseCpu->schedule(quiesceEvent, quiesceEndTick); 98 if (kernelStats) 99 kernelStats->unserialize(cp, section); 100} 101 102void 103ThreadState::initMemProxies(ThreadContext *tc) 104{ 105 // The port proxies only refer to the data port on the CPU side 106 // and can safely be done at init() time even if the CPU is not 107 // connected, i.e. when restoring from a checkpoint and later 108 // switching the CPU in. 109 if (FullSystem) { 110 assert(physProxy == NULL); 111 // This cannot be done in the constructor as the thread state 112 // itself is created in the base cpu constructor and the 113 // getDataPort is a virtual function 114 physProxy = new PortProxy(baseCpu->getDataPort(), 115 baseCpu->cacheLineSize()); 116 117 assert(virtProxy == NULL); 118 virtProxy = new FSTranslatingPortProxy(tc); 119 } else { 120 assert(proxy == NULL); 121 proxy = new SETranslatingPortProxy(baseCpu->getDataPort(), 122 process, 123 SETranslatingPortProxy::NextPage); 124 } 125} 126 127PortProxy & 128ThreadState::getPhysProxy() 129{ 130 assert(FullSystem); 131 assert(physProxy != NULL); 132 return *physProxy; 133} 134 135FSTranslatingPortProxy & 136ThreadState::getVirtProxy() 137{ 138 assert(FullSystem); 139 assert(virtProxy != NULL); 140 return *virtProxy; 141} 142 143SETranslatingPortProxy & 144ThreadState::getMemProxy() 145{ 146 assert(!FullSystem); 147 assert(proxy != NULL); 148 return *proxy; 149} 150 151void 152ThreadState::profileClear() 153{ 154 if (profile) 155 profile->clear(); 156} 157 158void 159ThreadState::profileSample() 160{ 161 if (profile) 162 profile->sample(profileNode, profilePC); 163} 164