| /* User/system CPU time clocks that follow the std::chrono interface. |
| Copyright (C) 2016-2024 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef COMMON_RUN_TIME_CLOCK_H |
| #define COMMON_RUN_TIME_CLOCK_H |
| |
| #include <chrono> |
| |
| /* Count the total amount of time spent executing in user mode. */ |
| |
| struct user_cpu_time_clock |
| { |
| using duration = std::chrono::microseconds; |
| using rep = duration::rep; |
| using period = duration::period; |
| using time_point = std::chrono::time_point<user_cpu_time_clock>; |
| |
| static constexpr bool is_steady = true; |
| |
| /* Use run_time_clock::now instead. */ |
| static time_point now () noexcept = delete; |
| }; |
| |
| /* Count the total amount of time spent executing in kernel mode. */ |
| |
| struct system_cpu_time_clock |
| { |
| using duration = std::chrono::microseconds; |
| using rep = duration::rep; |
| using period = duration::period; |
| using time_point = std::chrono::time_point<system_cpu_time_clock>; |
| |
| static constexpr bool is_steady = true; |
| |
| /* Use run_time_clock::now instead. */ |
| static time_point now () noexcept = delete; |
| }; |
| |
| /* Count the total amount of time spent executing in userspace+kernel |
| mode. */ |
| |
| struct run_time_clock |
| { |
| using duration = std::chrono::microseconds; |
| using rep = duration::rep; |
| using period = duration::period; |
| using time_point = std::chrono::time_point<run_time_clock>; |
| |
| static constexpr bool is_steady = true; |
| |
| static time_point now () noexcept; |
| |
| /* Return the user/system time as separate time points, if |
| supported. If not supported, then the combined user+kernel time |
| is returned in USER and SYSTEM is set to zero. */ |
| static void now (user_cpu_time_clock::time_point &user, |
| system_cpu_time_clock::time_point &system) noexcept; |
| }; |
| |
| #endif /* COMMON_RUN_TIME_CLOCK_H */ |