thread_state.cc

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/*
 * Copyright (c) 2006 The Regents of The University of Michigan
 * All rights reserved.
 *
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 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
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 * neither the name of the copyright holders nor the names of its
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 * this software without specific prior written permission.
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#include "cpu/thread_state.hh"
 
#include "base/output.hh"
#include "cpu/base.hh"
#include "mem/port.hh"
#include "mem/port_proxy.hh"
#include "mem/se_translating_port_proxy.hh"
#include "mem/translating_port_proxy.hh"
#include "sim/full_system.hh"
#include "sim/serialize.hh"
#include "sim/system.hh"
 
namespace gem5
{
 
ThreadState::ThreadState(BaseCPU *cpu, ThreadID _tid, Process *_process)
    : numInst(0), numOp(0), threadStats(cpu, _tid),
      numLoad(0), startNumLoad(0),
      _status(ThreadContext::Halted), baseCpu(cpu),
      _contextId(0), _threadId(_tid), lastActivate(0), lastSuspend(0),
      process(_process), virtProxy(NULL), storeCondFailures(0)
{
}
 
ThreadState::~ThreadState()
{
    if (virtProxy != NULL)
        delete virtProxy;
}
 
void
ThreadState::serialize(CheckpointOut &cp) const
{
    SERIALIZE_ENUM(_status);
}
 
void
ThreadState::unserialize(CheckpointIn &cp)
{
    UNSERIALIZE_ENUM(_status);
}
 
void
ThreadState::initMemProxies(ThreadContext *tc)
{
    // The port proxies only refer to the data port on the CPU side
    // and can safely be done at init() time even if the CPU is not
    // connected, i.e. when restoring from a checkpoint and later
    // switching the CPU in.
    assert(virtProxy == NULL);
    if (FullSystem) {
        virtProxy = new TranslatingPortProxy(tc);
    } else {
        virtProxy = new SETranslatingPortProxy(
                tc, SETranslatingPortProxy::NextPage);
    }
}
 
PortProxy &
ThreadState::getVirtProxy()
{
    assert(virtProxy != NULL);
    return *virtProxy;
}
 
ThreadState::ThreadStateStats::ThreadStateStats(BaseCPU *cpu,
                                                const ThreadID& tid)
      : statistics::Group(cpu, csprintf("thread_%i", tid).c_str()),
      ADD_STAT(numInsts, statistics::units::Count::get(),
               "Number of Instructions committed"),
      ADD_STAT(numOps, statistics::units::Count::get(),
        "Number of Ops committed"),
      ADD_STAT(numMemRefs, statistics::units::Count::get(),
               "Number of Memory References")
{
 
}
 
} // namespace gem5