59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* User/system CPU time clocks that follow the std::chrono interface.
|
|
Copyright (C) 2016-2018 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
|
|
}
|