1 files changed, 39 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/clock.c b/REORG.TODO/sysdeps/unix/sysv/linux/clock.c
new file mode 100644
index 0000000000..a0056e4da7
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/clock.c
@@ -0,0 +1,39 @@
+/* Return the time used by the program so far (user time + system time).
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/times.h>
+#include <time.h>
+#include <unistd.h>
+
+clock_t
+clock (void)
+{
+  struct timespec ts;
+
+  _Static_assert (CLOCKS_PER_SEC == 1000000,
+		  "CLOCKS_PER_SEC should be 1000000");
+
+  /* clock_gettime shouldn't fail here since CLOCK_PROCESS_CPUTIME_ID is
+     supported since 2.6.12.  Check the return value anyway in case the kernel
+     barfs on us for some reason.  */
+  if (__glibc_unlikely (__clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &ts) != 0))
+    return (clock_t) -1;
+
+  return (ts.tv_sec * CLOCKS_PER_SEC
+	  + ts.tv_nsec / (1000000000 / CLOCKS_PER_SEC));
+}