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- /* User/system CPU time clocks that follow the std::chrono interface.
- Copyright (C) 2016-2022 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/>. */
- #include "common-defs.h"
- #include "run-time-clock.h"
- #if defined HAVE_SYS_RESOURCE_H
- #include <sys/resource.h>
- #endif
- using namespace std::chrono;
- run_time_clock::time_point
- run_time_clock::now () noexcept
- {
- return time_point (microseconds (get_run_time ()));
- }
- #ifdef HAVE_GETRUSAGE
- static std::chrono::microseconds
- timeval_to_microseconds (struct timeval *tv)
- {
- return (seconds (tv->tv_sec) + microseconds (tv->tv_usec));
- }
- #endif
- void
- run_time_clock::now (user_cpu_time_clock::time_point &user,
- system_cpu_time_clock::time_point &system) noexcept
- {
- #ifdef HAVE_GETRUSAGE
- struct rusage rusage;
- getrusage (RUSAGE_SELF, &rusage);
- microseconds utime = timeval_to_microseconds (&rusage.ru_utime);
- microseconds stime = timeval_to_microseconds (&rusage.ru_stime);
- user = user_cpu_time_clock::time_point (utime);
- system = system_cpu_time_clock::time_point (stime);
- #else
- user = user_cpu_time_clock::time_point (microseconds (get_run_time ()));
- system = system_cpu_time_clock::time_point (microseconds::zero ());
- #endif
- }
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