1 /* 2 * Copyright (c) 2017-2018 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 #ifndef ARM_COMPUTE_TEST_PMU_COUNTER 25 #define ARM_COMPUTE_TEST_PMU_COUNTER 26 27 #include "Instrument.h" 28 #include "PMU.h" 29 30 namespace arm_compute 31 { 32 namespace test 33 { 34 namespace framework 35 { 36 /** Implementation of an instrument to count CPU cycles. */ 37 class PMUCounter : public Instrument 38 { 39 public: 40 /** Construct a PMU counter. 41 * 42 * @param[in] scale_factor Measurement scale factor. 43 */ PMUCounter(ScaleFactor scale_factor)44 PMUCounter(ScaleFactor scale_factor) 45 { 46 switch(scale_factor) 47 { 48 case ScaleFactor::NONE: 49 _scale_factor = 1; 50 _unit = ""; 51 break; 52 case ScaleFactor::SCALE_1K: 53 _scale_factor = 1000; 54 _unit = "K "; 55 break; 56 case ScaleFactor::SCALE_1M: 57 _scale_factor = 1000000; 58 _unit = "M "; 59 break; 60 default: 61 ARM_COMPUTE_ERROR("Invalid scale"); 62 } 63 }; 64 65 std::string id() const override; 66 void start() override; 67 void stop() override; 68 MeasurementsMap measurements() const override; 69 70 private: 71 PMU _pmu_cycles{ PERF_COUNT_HW_CPU_CYCLES }; 72 PMU _pmu_instructions{ PERF_COUNT_HW_INSTRUCTIONS }; 73 long long _cycles{ 0 }; 74 long long _instructions{ 0 }; 75 int _scale_factor{}; 76 }; 77 } // namespace framework 78 } // namespace test 79 } // namespace arm_compute 80 #endif /* ARM_COMPUTE_TEST_PMU_COUNTER */ 81