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/*
* 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
*/
#ifndef __CPU_THREAD_STATE_HH__
#define __CPU_THREAD_STATE_HH__
#include "arch/types.hh"
#include "config/the_isa.hh"
#include "cpu/base.hh"
#include "cpu/profile.hh"
#include "cpu/thread_context.hh"
#include "mem/mem_object.hh"
#include "sim/process.hh"
class EndQuiesceEvent;
class FunctionProfile;
class ProfileNode;
namespace TheISA {
namespace Kernel {
class Statistics;
}
}
class Checkpoint;
/**
* Struct for holding general thread state that is needed across CPU
* models. This includes things such as pointers to the process,
* memory, quiesce events, and certain stats. This can be expanded
* to hold more thread-specific stats within it.
*/
struct ThreadState : public Serializable {
typedef ThreadContext::Status Status;
ThreadState(BaseCPU *cpu, ThreadID _tid, Process *_process);
virtual ~ThreadState();
void serialize(CheckpointOut &cp) const override;
void unserialize(CheckpointIn &cp) override;
int cpuId() const { return baseCpu->cpuId(); }
uint32_t socketId() const { return baseCpu->socketId(); }
ContextID contextId() const { return _contextId; }
void setContextId(ContextID id) { _contextId = id; }
void setThreadId(ThreadID id) { _threadId = id; }
ThreadID threadId() const { return _threadId; }
Tick readLastActivate() const { return lastActivate; }
Tick readLastSuspend() const { return lastSuspend; }
/**
* Initialise the physical and virtual port proxies and tie them to
* the data port of the CPU.
*
* @param tc ThreadContext for the virtual-to-physical translation
*/
void initMemProxies(ThreadContext *tc);
void dumpFuncProfile();
EndQuiesceEvent *getQuiesceEvent() { return quiesceEvent; }
void profileClear();
void profileSample();
TheISA::Kernel::Statistics *getKernelStats() { return kernelStats; }
PortProxy &getPhysProxy();
FSTranslatingPortProxy &getVirtProxy();
Process *getProcessPtr() { return process; }
SETranslatingPortProxy &getMemProxy();
/** Reads the number of instructions functionally executed and
* committed.
*/
Counter readFuncExeInst() { return funcExeInst; }
/** Sets the total number of instructions functionally executed
* and committed.
*/
void setFuncExeInst(Counter new_val) { funcExeInst = new_val; }
/** Returns the status of this thread. */
Status status() const { return _status; }
/** Sets the status of this thread. */
void setStatus(Status new_status) { _status = new_status; }
public:
/** Number of instructions committed. */
Counter numInst;
/** Stat for number instructions committed. */
Stats::Scalar numInsts;
/** Number of ops (including micro ops) committed. */
Counter numOp;
/** Stat for number ops (including micro ops) committed. */
Stats::Scalar numOps;
/** Stat for number of memory references. */
Stats::Scalar numMemRefs;
/** Number of simulated loads, used for tracking events based on
* the number of loads committed.
*/
Counter numLoad;
/** The number of simulated loads committed prior to this run. */
Counter startNumLoad;
protected:
ThreadContext::Status _status;
// Pointer to the base CPU.
BaseCPU *baseCpu;
// system wide HW context id
ContextID _contextId;
// Index of hardware thread context on the CPU that this represents.
ThreadID _threadId;
public:
/** Last time activate was called on this thread. */
Tick lastActivate;
/** Last time suspend was called on this thread. */
Tick lastSuspend;
public:
FunctionProfile *profile;
ProfileNode *profileNode;
Addr profilePC;
EndQuiesceEvent *quiesceEvent;
TheISA::Kernel::Statistics *kernelStats;
protected:
Process *process;
/** A port proxy outgoing only for functional accesses to physical
* addresses.*/
PortProxy *physProxy;
/** A translating port proxy, outgoing only, for functional
* accesse to virtual addresses. */
FSTranslatingPortProxy *virtProxy;
SETranslatingPortProxy *proxy;
public:
/*
* number of executed instructions, for matching with syscall trace
* points in EIO files.
*/
Counter funcExeInst;
//
// Count failed store conditionals so we can warn of apparent
// application deadlock situations.
unsigned storeCondFailures;
};
#endif // __CPU_THREAD_STATE_HH__
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