tests/benchmark/PMUCounter.h

/*
 * Copyright (c) 2017 ARM Limited.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#ifndef __ARM_COMPUTE_TEST_BENCHMARK_PMU_COUNTER_H__
#define __ARM_COMPUTE_TEST_BENCHMARK_PMU_COUNTER_H__

#include "Instrument.h"

namespace arm_compute
{
namespace test
{
namespace benchmark
{
/** Implementation of an instrument to count CPU cycles. */
class CycleCounter : public Instrument
{
public:
    /** Initialise the cycle counter. */
    CycleCounter();

    std::string                               id() const override;
    void                                      start() override;
    void                                      stop() override;
    std::unique_ptr<Instrument::IMeasurement> get_measurement() const override;

private:
    long      _fd{ -1 };
    long long _cycles{ 0 };
};

/** Implementation of an instrument to count executed CPU instructions. */
class InstructionCounter : public Instrument
{
public:
    /** Initialise the instruction counter. */
    InstructionCounter();

    std::string                               id() const override;
    void                                      start() override;
    void                                      stop() override;
    std::unique_ptr<Instrument::IMeasurement> get_measurement() const override;

private:
    long      _fd{ -1 };
    long long _instructions{ 0 };
};
} // namespace benchmark
} // namespace test
} // namespace arm_compute
#endif