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/*
* (C) 2018 by Computer System Laboratory, IIS, Academia Sinica, Taiwan.
* See COPYRIGHT in top-level directory.
*/
#ifndef __LLVM_HARD_PERFMON_H
#define __LLVM_HARD_PERFMON_H
#include <map>
#include <thread>
#include "pmu/pmu.h"
#include "utils.h"
class PerfmonData;
class BaseTracer;
enum HPMControl {
HPM_INIT = 0,
HPM_FINALIZE,
HPM_START,
HPM_STOP,
};
/*
* Hardware Performance Monitor (HPM)
*/
class HardwarePerfmon {
std::thread MonThread; /* Monitor thread */
int MonThreadID; /* Monitor thread id */
bool MonThreadStop; /* Monitor thread is stopped or not */
hqemu::Mutex Lock;
/* Start monitor thread. */
void StartMonThread();
/* Monitor thread routine. */
void MonitorFunc();
public:
HardwarePerfmon();
~HardwarePerfmon();
/* Set up HPM with the monitor thread id */
void Init(int monitor_thread_tid);
/* Register a thread to be monitored. */
void RegisterThread(BaseTracer *Tracer);
/* Unreigster a thread from being monitored. */
void UnregisterThread(BaseTracer *Tracer);
/* Notify that the execution enters/leaves the code cache. */
void NotifyCacheEnter(BaseTracer *Tracer);
void NotifyCacheLeave(BaseTracer *Tracer);
/* Stop the monitor. */
void Pause();
/* Restart the monitor. */
void Resume();
};
class PerfmonData {
public:
PerfmonData(int tid);
~PerfmonData();
int TID;
pmu::Handle ICountHndl;
pmu::Handle BranchHndl;
pmu::Handle MemLoadHndl;
pmu::Handle MemStoreHndl;
pmu::Handle CoverSetHndl;
uint64_t LastNumBranches, LastNumLoads, LastNumStores;
void MonitorBasic(HPMControl Ctl);
void MonitorCoverSet(HPMControl Ctl);
};
extern HardwarePerfmon *HP;
#endif /* __LLVM_HARD_PERFMON_H */
/*
* vim: ts=8 sts=4 sw=4 expandtab
*/
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