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// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_ARM64_INSTRUMENT_ARM64_H_
#define V8_ARM64_INSTRUMENT_ARM64_H_
#include "src/globals.h"
#include "src/utils.h"
#include "src/arm64/constants-arm64.h"
#include "src/arm64/decoder-arm64.h"
namespace v8 {
namespace internal {
const int kCounterNameMaxLength = 256;
const uint64_t kDefaultInstrumentationSamplingPeriod = 1 << 22;
enum InstrumentState {
InstrumentStateDisable = 0,
InstrumentStateEnable = 1
enum CounterType {
Gauge = 0, // Gauge counters reset themselves after reading.
Cumulative = 1 // Cumulative counters keep their value after reading.
class Counter {
explicit Counter(const char* name, CounterType type = Gauge);
void Increment();
void Enable();
void Disable();
bool IsEnabled();
uint64_t count();
const char* name();
CounterType type();
char name_[kCounterNameMaxLength];
uint64_t count_;
bool enabled_;
CounterType type_;
class Instrument: public DecoderVisitor {
explicit Instrument(const char* datafile = NULL,
uint64_t sample_period = kDefaultInstrumentationSamplingPeriod);
// Declare all Visitor functions.
#define DECLARE(A) void Visit##A(Instruction* instr);
#undef DECLARE
void Update();
void Enable();
void Disable();
void DumpCounters();
void DumpCounterNames();
void DumpEventMarker(unsigned marker);
void HandleInstrumentationEvent(unsigned event);
Counter* GetCounter(const char* name);
void InstrumentLoadStore(Instruction* instr);
void InstrumentLoadStorePair(Instruction* instr);
std::list<Counter*> counters_;
FILE *output_stream_;
uint64_t sample_period_;
} } // namespace v8::internal
#endif // V8_ARM64_INSTRUMENT_ARM64_H_