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author | Moritz Pflanzer <moritz.pflanzer@arm.com> | 2017-08-30 12:47:06 +0100 |
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committer | Anthony Barbier <anthony.barbier@arm.com> | 2018-11-02 16:35:24 +0000 |
commit | 09e4f98e31a9bb77bebeccd59c70f0715ab2c292 (patch) | |
tree | dcf5992df5961042a221cb426372eeb21a2d8023 /tests/framework/instruments/PMU.h | |
parent | 906443f38fe2c168f4a0b2db5cd9852865fc4922 (diff) | |
download | ComputeLibrary-09e4f98e31a9bb77bebeccd59c70f0715ab2c292.tar.gz |
COMPMID-482: Refactor PMU counters
Change-Id: I9b254ce693363ecbbd7c188d211c85471134a91e
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/84328
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Diffstat (limited to 'tests/framework/instruments/PMU.h')
-rw-r--r-- | tests/framework/instruments/PMU.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/tests/framework/instruments/PMU.h b/tests/framework/instruments/PMU.h new file mode 100644 index 0000000000..571edb984d --- /dev/null +++ b/tests/framework/instruments/PMU.h @@ -0,0 +1,96 @@ +/* + * 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_PMU +#define ARM_COMPUTE_TEST_PMU + +#include "arm_compute/core/Error.h" + +#include <cstdint> +#include <linux/perf_event.h> +#include <stdexcept> +#include <unistd.h> + +namespace arm_compute +{ +namespace test +{ +namespace framework +{ +/** Class provides access to CPU hardware counters. */ +class PMU +{ +public: + /** Default constructor. */ + PMU(); + + /** Create PMU with specified counter. + * + * This constructor automatically calls @ref open with the default + * configuration. + * + * @param[in] config Counter identifier. + */ + explicit PMU(uint64_t config); + + /** Default destructor. */ + ~PMU(); + + /** Get the counter value. + * + * @return Counter value casted to the specified type. */ + template <typename T> + T get_value() const; + + /** Open the specified counter based on the default configuration. */ + void open(uint64_t config); + + /** Open the specified configuration. */ + void open(const perf_event_attr &perf_config); + + /** Close the currently open counter. */ + void close(); + + /** Reset counter. */ + void reset(); + +private: + perf_event_attr _perf_config; + long _fd{ -1 }; +}; + +template <typename T> +T PMU::get_value() const +{ + T value{}; + const ssize_t result = read(_fd, &value, sizeof(T)); + + ARM_COMPUTE_ERROR_ON_MSG(result == -1, "Can't get PMU counter value: %d", errno); + ARM_COMPUTE_UNUSED(result); + + return value; +} +} // namespace framework +} // namespace test +} // namespace arm_compute +#endif /* ARM_COMPUTE_TEST_PMU */ |