1 files changed, 153 insertions, 0 deletions
diff --git a/REORG.TODO/benchtests/bench-strnlen.c b/REORG.TODO/benchtests/bench-strnlen.c
new file mode 100644
index 0000000000..592e3013f8
--- /dev/null
+++ b/REORG.TODO/benchtests/bench-strnlen.c
@@ -0,0 +1,153 @@
+/* Measure strlen functions.
+   Copyright (C) 2013-2017 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/>.  */
+
+#define TEST_MAIN
+#ifndef WIDE
+# define TEST_NAME "strnlen"
+#else
+# define TEST_NAME "wcsnlen"
+#endif /* WIDE */
+#include "bench-string.h"
+
+#ifndef WIDE
+# define STRNLEN strnlen
+# define CHAR char
+# define BIG_CHAR CHAR_MAX
+# define MIDDLE_CHAR 127
+# define SIMPLE_STRNLEN simple_strnlen
+#else
+# include <wchar.h>
+# define STRNLEN wcsnlen
+# define CHAR wchar_t
+# define BIG_CHAR WCHAR_MAX
+# define MIDDLE_CHAR 1121
+# define SIMPLE_STRNLEN simple_wcsnlen
+#endif /* WIDE */
+
+typedef size_t (*proto_t) (const CHAR *, size_t);
+size_t SIMPLE_STRNLEN (const CHAR *, size_t);
+
+IMPL (SIMPLE_STRNLEN, 0)
+IMPL (STRNLEN, 1)
+
+size_t
+SIMPLE_STRNLEN (const CHAR *s, size_t maxlen)
+{
+  size_t i;
+
+  for (i = 0; i < maxlen && s[i]; ++i);
+  return i;
+}
+
+static void
+do_one_test (impl_t *impl, const CHAR *s, size_t maxlen, size_t exp_len)
+{
+  size_t len = CALL (impl, s, maxlen), i, iters = INNER_LOOP_ITERS;
+  timing_t start, stop, cur;
+
+  if (len != exp_len)
+    {
+      error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
+	     len, exp_len);
+      ret = 1;
+      return;
+    }
+
+  TIMING_NOW (start);
+  for (i = 0; i < iters; ++i)
+    {
+      CALL (impl, s, maxlen);
+    }
+  TIMING_NOW (stop);
+
+  TIMING_DIFF (cur, start, stop);
+
+  TIMING_PRINT_MEAN ((double) cur, (double) iters);
+}
+
+static void
+do_test (size_t align, size_t len, size_t maxlen, int max_char)
+{
+  size_t i;
+
+  align &= 63;
+  if ((align + len) * sizeof (CHAR) >= page_size)
+    return;
+
+  CHAR *buf = (CHAR *) (buf1);
+
+  for (i = 0; i < len; ++i)
+    buf[align + i] = 1 + 7 * i % max_char;
+  buf[align + len] = 0;
+
+  printf ("Length %4zd, alignment %2zd:", len, align);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (CHAR *) (buf + align), maxlen, MIN (len, maxlen));
+
+  putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%20s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, i, i - 1, MIDDLE_CHAR);
+      do_test (0, i, i, MIDDLE_CHAR);
+      do_test (0, i, i + 1, MIDDLE_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, i, i - 1, MIDDLE_CHAR);
+      do_test (i, i, i, MIDDLE_CHAR);
+      do_test (i, i, i + 1, MIDDLE_CHAR);
+    }
+
+  for (i = 2; i <= 10; ++i)
+    {
+      do_test (0, 1 << i, 5000, MIDDLE_CHAR);
+      do_test (1, 1 << i, 5000, MIDDLE_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    do_test (0, i, 5000, BIG_CHAR);
+
+  for (i = 1; i < 8; ++i)
+    do_test (i, i, 5000, BIG_CHAR);
+
+  for (i = 2; i <= 10; ++i)
+    {
+      do_test (0, 1 << i, 5000, BIG_CHAR);
+      do_test (1, 1 << i, 5000, BIG_CHAR);
+    }
+
+  return ret;
+}
+
+#include <support/test-driver.c>