1 files changed, 126 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/clock_settime.c b/REORG.TODO/sysdeps/unix/clock_settime.c
new file mode 100644
index 0000000000..e744cae6a9
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/clock_settime.c
@@ -0,0 +1,126 @@
+/* Copyright (C) 1999-2017 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 <errno.h>
+#include <time.h>
+#include <sys/time.h>
+#include <ldsodefs.h>
+
+
+#if HP_TIMING_AVAIL && !defined HANDLED_CPUTIME
+/* Clock frequency of the processor.  We make it a 64-bit variable
+   because some jokers are already playing with processors with more
+   than 4GHz.  */
+static hp_timing_t freq;
+
+
+/* This function is defined in the thread library.  */
+extern void __pthread_clock_settime (clockid_t clock_id, hp_timing_t offset)
+     __attribute__ ((__weak__));
+
+
+static int
+hp_timing_settime (clockid_t clock_id, const struct timespec *tp)
+{
+  hp_timing_t tsc;
+  hp_timing_t usertime;
+
+  /* First thing is to get the current time.  */
+  HP_TIMING_NOW (tsc);
+
+  if (__glibc_unlikely (freq == 0))
+    {
+      /* This can only happen if we haven't initialized the `freq'
+	 variable yet.  Do this now. We don't have to protect this
+	 code against multiple execution since all of them should lead
+	 to the same result.  */
+      freq = __get_clockfreq ();
+      if (__glibc_unlikely (freq == 0))
+	/* Something went wrong.  */
+	return -1;
+    }
+
+  /* Convert the user-provided time into CPU ticks.  */
+  usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull;
+
+  /* Determine the offset and use it as the new base value.  */
+  if (clock_id == CLOCK_PROCESS_CPUTIME_ID
+      || __pthread_clock_settime == NULL)
+    GL(dl_cpuclock_offset) = tsc - usertime;
+  else
+    __pthread_clock_settime (clock_id, tsc - usertime);
+
+  return 0;
+}
+#endif
+
+
+/* Set CLOCK to value TP.  */
+int
+__clock_settime (clockid_t clock_id, const struct timespec *tp)
+{
+  int retval;
+
+  /* Make sure the time cvalue is OK.  */
+  if (tp->tv_nsec < 0 || tp->tv_nsec >= 1000000000)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  switch (clock_id)
+    {
+#define HANDLE_REALTIME \
+      do {								      \
+	struct timeval tv;						      \
+	TIMESPEC_TO_TIMEVAL (&tv, tp);					      \
+									      \
+	retval = settimeofday (&tv, NULL);				      \
+      } while (0)
+
+#ifdef SYSDEP_SETTIME
+      SYSDEP_SETTIME;
+#endif
+
+#ifndef HANDLED_REALTIME
+    case CLOCK_REALTIME:
+      HANDLE_REALTIME;
+      break;
+#endif
+
+    default:
+#ifdef SYSDEP_SETTIME_CPU
+      SYSDEP_SETTIME_CPU;
+#endif
+#ifndef HANDLED_CPUTIME
+# if HP_TIMING_AVAIL
+      if (CPUCLOCK_WHICH (clock_id) == CLOCK_PROCESS_CPUTIME_ID
+	  || CPUCLOCK_WHICH (clock_id) == CLOCK_THREAD_CPUTIME_ID)
+	retval = hp_timing_settime (clock_id, tp);
+      else
+# endif
+	{
+	  __set_errno (EINVAL);
+	  retval = -1;
+	}
+#endif
+      break;
+    }
+
+  return retval;
+}
+weak_alias (__clock_settime, clock_settime)