1 files changed, 58 insertions, 0 deletions
diff --git a/gdbsupport/run-time-clock.c b/gdbsupport/run-time-clock.c
new file mode 100644
index 00000000000..24dc19c5813
--- /dev/null
+++ b/gdbsupport/run-time-clock.c
@@ -0,0 +1,58 @@
+/* User/system CPU time clocks that follow the std::chrono interface.
+   Copyright (C) 2016-2020 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
+}