1 files changed, 0 insertions, 226 deletions
diff --git a/vppinfra/vppinfra/time.c b/vppinfra/vppinfra/time.c
deleted file mode 100644
index 2bdb9da4b39..00000000000
--- a/vppinfra/vppinfra/time.c
+++ /dev/null
@@ -1,226 +0,0 @@
-/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*
-  Copyright (c) 2005 Eliot Dresselhaus
-
-  Permission is hereby granted, free of charge, to any person obtaining
-  a copy of this software and associated documentation files (the
-  "Software"), to deal in the Software without restriction, including
-  without limitation the rights to use, copy, modify, merge, publish,
-  distribute, sublicense, and/or sell copies of the Software, and to
-  permit persons to whom the Software is furnished to do so, subject to
-  the following conditions:
-
-  The above copyright notice and this permission notice shall be
-  included in all copies or substantial portions of the Software.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#include <vppinfra/os.h>
-#include <vppinfra/time.h>
-#include <vppinfra/format.h>
-#include <vppinfra/cpu.h>
-
-#ifdef CLIB_UNIX
-
-#include <math.h>
-#include <sys/time.h>
-#include <fcntl.h>
-
-/* Not very accurate way of determining cpu clock frequency
-   for unix.  Better to use /proc/cpuinfo on linux. */
-static f64
-estimate_clock_frequency (f64 sample_time)
-{
-  /* Round to nearest 100KHz. */
-  const f64 round_to_units = 100e5;
-
-  f64 time_now, time_start, time_limit, freq;
-  u64 ifreq, t[2];
-
-  time_start = time_now = unix_time_now ();
-  time_limit = time_now + sample_time;
-  t[0] = clib_cpu_time_now ();
-  while (time_now < time_limit)
-    time_now = unix_time_now ();
-  t[1] = clib_cpu_time_now ();
-
-  freq = (t[1] - t[0]) / (time_now - time_start);
-  ifreq = flt_round_nearest (freq / round_to_units);
-  freq = ifreq * round_to_units;
-
-  return freq;
-}
-
-/* Fetch cpu frequency via parseing /proc/cpuinfo.
-   Only works for Linux. */
-static f64
-clock_frequency_from_proc_filesystem (void)
-{
-  f64 cpu_freq = 1e9;		/* better than 40... */
-  f64 ppc_timebase = 0;		/* warnings be gone */
-  int fd;
-  unformat_input_t input;
-
-/* $$$$ aarch64 kernel doesn't report "cpu MHz" */
-#if defined(__aarch64__)
-  return 0.0;
-#endif
-
-  cpu_freq = 0;
-  fd = open ("/proc/cpuinfo", 0);
-  if (fd < 0)
-    return cpu_freq;
-
-  unformat_init_unix_file (&input, fd);
-
-  ppc_timebase = 0;
-  while (unformat_check_input (&input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (&input, "cpu MHz : %f", &cpu_freq))
-	cpu_freq *= 1e6;
-      else if (unformat (&input, "timebase : %f", &ppc_timebase))
-	;
-      else
-	unformat_skip_line (&input);
-    }
-
-  unformat_free (&input);
-
-  close (fd);
-
-  /* Override CPU frequency with time base for PPC. */
-  if (ppc_timebase != 0)
-    cpu_freq = ppc_timebase;
-
-  return cpu_freq;
-}
-
-/* Fetch cpu frequency via reading /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
-   Only works for Linux. */
-static f64
-clock_frequency_from_sys_filesystem (void)
-{
-  f64 cpu_freq;
-  int fd;
-  unformat_input_t input;
-
-  /* Time stamp always runs at max frequency. */
-  cpu_freq = 0;
-  fd = open ("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq", 0);
-  if (fd < 0)
-    goto done;
-
-  unformat_init_unix_file (&input, fd);
-  unformat (&input, "%f", &cpu_freq);
-  cpu_freq *= 1e3;		/* measured in kHz */
-  unformat_free (&input);
-  close (fd);
-done:
-  return cpu_freq;
-}
-
-f64
-os_cpu_clock_frequency (void)
-{
-  f64 cpu_freq;
-
-  if (clib_cpu_supports_invariant_tsc ())
-    return estimate_clock_frequency (1e-3);
-
-  /* First try /sys version. */
-  cpu_freq = clock_frequency_from_sys_filesystem ();
-  if (cpu_freq != 0)
-    return cpu_freq;
-
-  /* Next try /proc version. */
-  cpu_freq = clock_frequency_from_proc_filesystem ();
-  if (cpu_freq != 0)
-    return cpu_freq;
-
-  /* If /proc/cpuinfo fails (e.g. not running on Linux) fall back to
-     gettimeofday based estimated clock frequency. */
-  return estimate_clock_frequency (1e-3);
-}
-
-#endif /* CLIB_UNIX */
-
-/* Initialize time. */
-void
-clib_time_init (clib_time_t * c)
-{
-  memset (c, 0, sizeof (c[0]));
-  c->clocks_per_second = os_cpu_clock_frequency ();
-  c->seconds_per_clock = 1 / c->clocks_per_second;
-  c->log2_clocks_per_second = min_log2_u64 ((u64) c->clocks_per_second);
-
-  /* Initially verify frequency every sec */
-  c->log2_clocks_per_frequency_verify = c->log2_clocks_per_second;
-
-  c->last_verify_reference_time = unix_time_now ();
-  c->last_cpu_time = clib_cpu_time_now ();
-  c->init_cpu_time = c->last_verify_cpu_time = c->last_cpu_time;
-}
-
-void
-clib_time_verify_frequency (clib_time_t * c)
-{
-  f64 now_reference = unix_time_now ();
-  f64 dtr = now_reference - c->last_verify_reference_time;
-  f64 dtr_max;
-  u64 dtc = c->last_cpu_time - c->last_verify_cpu_time;
-  f64 round_units = 100e5;
-
-  c->last_verify_cpu_time = c->last_cpu_time;
-  c->last_verify_reference_time = now_reference;
-
-  /*
-   * Is the reported reference interval non-positive,
-   * or off by a factor of two - or 8 seconds - whichever is larger?
-   * Someone reset the clock behind our back.
-   */
-  dtr_max = (f64) (2ULL << c->log2_clocks_per_frequency_verify) /
-    (f64) (1ULL << c->log2_clocks_per_second);
-  dtr_max = dtr_max > 8.0 ? dtr_max : 8.0;
-
-  if (dtr <= 0.0 || dtr > dtr_max)
-    {
-      c->log2_clocks_per_frequency_verify = c->log2_clocks_per_second;
-      return;
-    }
-
-  c->clocks_per_second =
-    flt_round_nearest ((f64) dtc / (dtr * round_units)) * round_units;
-  c->seconds_per_clock = 1 / c->clocks_per_second;
-
-  /* Double time between verifies; max at 64 secs ~ 1 minute. */
-  if (c->log2_clocks_per_frequency_verify < c->log2_clocks_per_second + 6)
-    c->log2_clocks_per_frequency_verify += 1;
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */