9e3c8de30b
This patch is adding a clearer design intent to all objects that would not be complete without a port proxy by making the proxies members rathen than dynamically allocated. In essence, if NULL would not be a valid value for the proxy, then we avoid using a pointer to make this clear. The same approach is used for the methods using these proxies, such as loadSections, that now use references rather than pointers to better reflect the fact that NULL would not be an acceptable value (in fact the code would break and that is how this patch started out). Overall the concept of "using a reference to express unconditional composition where a NULL pointer is never valid" could be done on a much broader scale throughout the code base, but for now it is only done in the locations affected by the proxies.
139 lines
4.5 KiB
C++
139 lines
4.5 KiB
C++
/*
|
|
* Copyright (c) 2006 The Regents of The University of Michigan
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* Authors: Kevin Lim
|
|
*/
|
|
|
|
#include "arch/kernel_stats.hh"
|
|
#include "base/output.hh"
|
|
#include "cpu/base.hh"
|
|
#include "cpu/profile.hh"
|
|
#include "cpu/quiesce_event.hh"
|
|
#include "cpu/thread_state.hh"
|
|
#include "mem/fs_translating_port_proxy.hh"
|
|
#include "mem/port.hh"
|
|
#include "mem/port_proxy.hh"
|
|
#include "mem/se_translating_port_proxy.hh"
|
|
#include "sim/full_system.hh"
|
|
#include "sim/serialize.hh"
|
|
#include "sim/system.hh"
|
|
|
|
ThreadState::ThreadState(BaseCPU *cpu, ThreadID _tid, Process *_process)
|
|
: numInst(0), numOp(0), numLoad(0), _status(ThreadContext::Halted),
|
|
baseCpu(cpu), _threadId(_tid), lastActivate(0), lastSuspend(0),
|
|
profile(NULL), profileNode(NULL), profilePC(0), quiesceEvent(NULL),
|
|
kernelStats(NULL), process(_process), physProxy(NULL), virtProxy(NULL),
|
|
proxy(NULL), funcExeInst(0), storeCondFailures(0)
|
|
{
|
|
}
|
|
|
|
ThreadState::~ThreadState()
|
|
{
|
|
if (physProxy != NULL)
|
|
delete physProxy;
|
|
if (virtProxy != NULL)
|
|
delete virtProxy;
|
|
if (proxy != NULL)
|
|
delete proxy;
|
|
}
|
|
|
|
void
|
|
ThreadState::serialize(std::ostream &os)
|
|
{
|
|
SERIALIZE_ENUM(_status);
|
|
// thread_num and cpu_id are deterministic from the config
|
|
SERIALIZE_SCALAR(funcExeInst);
|
|
|
|
if (!FullSystem)
|
|
return;
|
|
|
|
Tick quiesceEndTick = 0;
|
|
if (quiesceEvent->scheduled())
|
|
quiesceEndTick = quiesceEvent->when();
|
|
SERIALIZE_SCALAR(quiesceEndTick);
|
|
if (kernelStats)
|
|
kernelStats->serialize(os);
|
|
}
|
|
|
|
void
|
|
ThreadState::unserialize(Checkpoint *cp, const std::string §ion)
|
|
{
|
|
|
|
UNSERIALIZE_ENUM(_status);
|
|
// thread_num and cpu_id are deterministic from the config
|
|
UNSERIALIZE_SCALAR(funcExeInst);
|
|
|
|
if (!FullSystem)
|
|
return;
|
|
|
|
Tick quiesceEndTick;
|
|
UNSERIALIZE_SCALAR(quiesceEndTick);
|
|
if (quiesceEndTick)
|
|
baseCpu->schedule(quiesceEvent, quiesceEndTick);
|
|
if (kernelStats)
|
|
kernelStats->unserialize(cp, section);
|
|
}
|
|
|
|
void
|
|
ThreadState::initMemProxies(ThreadContext *tc)
|
|
{
|
|
// Note that this only refers to the port on the CPU side and can
|
|
// safely be done at init() time even if the CPU is not connected
|
|
// (i.e. due to restoring from a checkpoint and later switching
|
|
// in.
|
|
if (physProxy == NULL)
|
|
// this cannot be done in the constructor as the thread state
|
|
// itself is created in the base cpu constructor and the
|
|
// getPort is a virtual function at the moment
|
|
physProxy = new PortProxy(baseCpu->getDataPort());
|
|
if (virtProxy == NULL)
|
|
virtProxy = new FSTranslatingPortProxy(tc);
|
|
}
|
|
|
|
void
|
|
ThreadState::profileClear()
|
|
{
|
|
if (profile)
|
|
profile->clear();
|
|
}
|
|
|
|
void
|
|
ThreadState::profileSample()
|
|
{
|
|
if (profile)
|
|
profile->sample(profileNode, profilePC);
|
|
}
|
|
|
|
SETranslatingPortProxy &
|
|
ThreadState::getMemProxy()
|
|
{
|
|
if (proxy == NULL)
|
|
proxy = new SETranslatingPortProxy(baseCpu->getDataPort(),
|
|
process,
|
|
SETranslatingPortProxy::NextPage);
|
|
return *proxy;
|
|
}
|