Eanna O Cathain | 2f0ddb6 | 2022-03-03 15:58:10 +0000 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2022 Arm Ltd and Contributors. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #pragma once |
| 7 | #include <chrono> |
| 8 | #include <iostream> |
| 9 | #include <string> |
| 10 | |
| 11 | using namespace std::chrono; |
| 12 | |
| 13 | namespace common |
| 14 | { |
| 15 | /** |
| 16 | * @brief Used for meausuring performance of specific actions in the code. |
| 17 | * Profiling should be enabled with a parameter passed to the constructor and |
| 18 | * it's disabled by default. |
| 19 | * In order to measure timing, wrap the desired code section with |
| 20 | * ProfilingStart() and ProfilingStopAndPrintUs(title) |
| 21 | */ |
| 22 | class Profiling { |
| 23 | private: |
| 24 | |
| 25 | struct group_thousands : std::numpunct<char> |
| 26 | { |
| 27 | std::string do_grouping() const override { return "\3"; } |
| 28 | }; |
| 29 | |
| 30 | bool mProfilingEnabled{}; |
| 31 | steady_clock::time_point mStart{}; |
| 32 | steady_clock::time_point mStop{}; |
| 33 | public: |
| 34 | Profiling() : mProfilingEnabled(false) {}; |
| 35 | |
| 36 | /** |
| 37 | * @brief Initializes the profiling object. |
| 38 | * |
| 39 | * * @param[in] isEnabled - Enables the profiling computation and prints. |
| 40 | */ |
| 41 | explicit Profiling(bool isEnabled) : mProfilingEnabled(isEnabled) {}; |
| 42 | |
| 43 | /** |
| 44 | * @brief Starts the profiling measurement. |
| 45 | * |
| 46 | */ |
| 47 | |
| 48 | void ProfilingStart() |
| 49 | { |
| 50 | if (mProfilingEnabled) |
| 51 | { |
| 52 | mStart = steady_clock::now(); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * @brief Stops the profiling measurement, without printing the results. |
| 58 | * |
| 59 | */ |
| 60 | auto ProfilingStop() |
| 61 | { |
| 62 | if (mProfilingEnabled) |
| 63 | { |
| 64 | mStop = steady_clock::now(); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * @brief Get the measurement result in micro-seconds. |
| 70 | * |
| 71 | */ |
| 72 | auto ProfilingGetUs() |
| 73 | { |
| 74 | return mProfilingEnabled ? duration_cast<microseconds>(mStop - mStart).count() : 0; |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * @brief Stop the profiling measurement and print the result in micro-seconds. |
| 79 | * |
| 80 | */ |
| 81 | void ProfilingStopAndPrintUs(const std::string &title) |
| 82 | { |
| 83 | ProfilingStop(); |
| 84 | if (mProfilingEnabled) { |
| 85 | std::cout.imbue(std::locale(std::cout.getloc(), new group_thousands)); |
| 86 | std::cout << "Profiling: " << title << ": " << ProfilingGetUs() << " uSeconds" << std::endl; |
| 87 | } |
| 88 | } |
| 89 | }; |
| 90 | }// namespace common |