src/cpu/thread_state.cc

   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 "base/output.hh"
  32 #include "cpu/profile.hh"
  33 #include "cpu/thread_state.hh"
  34 #include "sim/serialize.hh"
  35
  36 #if FULL_SYSTEM
  37 #include "cpu/quiesce_event.hh"
  38 #include "kern/kernel_stats.hh"
  39 #endif
  40
  41 #if FULL_SYSTEM
  42 ThreadState::ThreadState(int _cpuId, int _tid)
  43     : cpuId(_cpuId), tid(_tid), lastActivate(0), lastSuspend(0),
  44       profile(NULL), profileNode(NULL), profilePC(0), quiesceEvent(NULL),
  45       microPC(0), nextMicroPC(1), funcExeInst(0), storeCondFailures(0)
  46 #else
  47 ThreadState::ThreadState(int _cpuId, int _tid, Process *_process,
  48                          short _asid, MemObject *mem)
  49     : cpuId(_cpuId), tid(_tid), lastActivate(0), lastSuspend(0),
  50       process(_process), asid(_asid),
  51       microPC(0), nextMicroPC(1), funcExeInst(0), storeCondFailures(0)
  52 #endif
  53 {
  54     numInst = 0;
  55     numLoad = 0;
  56 }
  57
  58 void
  59 ThreadState::serialize(std::ostream &os)
  60 {
  61     SERIALIZE_ENUM(_status);
  62     // thread_num and cpu_id are deterministic from the config
  63     SERIALIZE_SCALAR(funcExeInst);
  64     SERIALIZE_SCALAR(inst);
  65
  66 #if FULL_SYSTEM
  67     Tick quiesceEndTick = 0;
  68     if (quiesceEvent->scheduled())
  69         quiesceEndTick = quiesceEvent->when();
  70     SERIALIZE_SCALAR(quiesceEndTick);
  71     if (kernelStats)
  72         kernelStats->serialize(os);
  73 #endif
  74 }
  75
  76 void
  77 ThreadState::unserialize(Checkpoint *cp, const std::string &section)
  78 {
  79
  80     UNSERIALIZE_ENUM(_status);
  81     // thread_num and cpu_id are deterministic from the config
  82     UNSERIALIZE_SCALAR(funcExeInst);
  83     UNSERIALIZE_SCALAR(inst);
  84
  85 #if FULL_SYSTEM
  86     Tick quiesceEndTick;
  87     UNSERIALIZE_SCALAR(quiesceEndTick);
  88     if (quiesceEndTick)
  89         quiesceEvent->schedule(quiesceEndTick);
  90     if (kernelStats)
  91         kernelStats->unserialize(cp, section);
  92 #endif
  93 }
  94
  95 #if FULL_SYSTEM
  96
  97 void
  98 ThreadState::profileClear()
  99 {
 100     if (profile)
 101         profile->clear();
 102 }
 103
 104 void
 105 ThreadState::profileSample()
 106 {
 107     if (profile)
 108         profile->sample(profileNode, profilePC);
 109 }
 110
 111 #endif