24.02.1
PMU.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2017-2019 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef ARM_COMPUTE_TEST_PMU
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#define ARM_COMPUTE_TEST_PMU
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#include "
arm_compute/core/Error.h
"
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#include <cstdint>
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#include <errno.h>
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#include <linux/perf_event.h>
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#include <stdexcept>
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#include <sys/syscall.h>
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#include <unistd.h>
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namespace
arm_compute
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{
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namespace
test
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{
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namespace
framework
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{
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/** Class provides access to CPU hardware counters. */
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class
PMU
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{
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public
:
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/** Default constructor. */
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PMU
();
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/** Create PMU with specified counter.
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*
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* This constructor automatically calls @ref open with the default
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* configuration.
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*
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* @param[in] config Counter identifier.
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*/
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explicit
PMU
(uint64_t config);
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/** Default destructor. */
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~PMU
();
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/** Get the counter value.
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*
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* @return Counter value casted to the specified type. */
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template
<
typename
T>
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T
get_value
()
const
;
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/** Open the specified counter based on the default configuration.
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*
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* @param[in] config The default configuration.
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*/
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void
open
(uint64_t config);
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/** Open the specified configuration.
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*
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* @param[in] perf_config The specified configuration.
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*/
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void
open
(
const
perf_event_attr &perf_config);
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/** Close the currently open counter. */
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void
close
();
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/** Reset counter. */
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void
reset
();
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private
:
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perf_event_attr _perf_config;
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long
_fd{ -1 };
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};
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template
<
typename
T>
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T
PMU::get_value
()
const
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{
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T value{};
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const
ssize_t result = read(_fd, &value,
sizeof
(T));
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if
(result == -1)
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{
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ARM_COMPUTE_ERROR_VAR
(
"Can't get PMU counter value: %d"
, errno);
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}
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return
value;
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}
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}
// namespace framework
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}
// namespace test
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}
// namespace arm_compute
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#endif
/* ARM_COMPUTE_TEST_PMU */
ARM_COMPUTE_ERROR_VAR
#define ARM_COMPUTE_ERROR_VAR(msg,...)
Print the given message then throw an std::runtime_error.
Definition:
Error.h:348
arm_compute::test::framework::PMU::reset
void reset()
Reset counter.
Definition:
PMU.cpp:92
Error.h
arm_compute::test::framework::PMU::close
void close()
Close the currently open counter.
Definition:
PMU.cpp:83
arm_compute::test::framework::PMU::PMU
PMU()
Default constructor.
Definition:
PMU.cpp:37
arm_compute
Copyright (c) 2017-2024 Arm Limited.
Definition:
introduction.dox:24
arm_compute::test::framework::PMU::~PMU
~PMU()
Default destructor.
Definition:
PMU.cpp:58
arm_compute::test::framework::PMU::open
void open(uint64_t config)
Open the specified counter based on the default configuration.
Definition:
PMU.cpp:63
arm_compute::test::framework::PMU::get_value
T get_value() const
Get the counter value.
Definition:
PMU.h:91
arm_compute::test::framework::PMU
Class provides access to CPU hardware counters.
Definition:
PMU.h:43
tests
framework
instruments
PMU.h
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