Copy over string performance tests into benchtests

Copy over already existing string performance tests into benchtests.
Bits not related to performance measurements have been omitted.

1 files changed, 182 insertions, 0 deletions

diff --git a/benchtests/bench-strpbrk.c b/benchtests/bench-strpbrk.c
new file mode 100644
index 0000000000..0163de89bc
--- /dev/null
+++ b/benchtests/bench-strpbrk.c
@@ -0,0 +1,182 @@
+/* Measure strpbrk functions.
+   Copyright (C) 2013 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/>.  */
+
+#ifndef STRPBRK_RESULT
+# define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)
+# define RES_TYPE char *
+# define TEST_MAIN
+# define TEST_NAME "strpbrk"
+# include "bench-string.h"
+
+typedef char *(*proto_t) (const char *, const char *);
+char *simple_strpbrk (const char *, const char *);
+char *stupid_strpbrk (const char *, const char *);
+
+IMPL (stupid_strpbrk, 0)
+IMPL (simple_strpbrk, 0)
+IMPL (strpbrk, 1)
+
+char *
+simple_strpbrk (const char *s, const char *rej)
+{
+  const char *r;
+  char c;
+
+  while ((c = *s++) != '\0')
+    for (r = rej; *r != '\0'; ++r)
+      if (*r == c)
+	return (char *) s - 1;
+  return NULL;
+}
+
+char *
+stupid_strpbrk (const char *s, const char *rej)
+{
+  size_t ns = strlen (s), nrej = strlen (rej);
+  size_t i, j;
+
+  for (i = 0; i < ns; ++i)
+    for (j = 0; j < nrej; ++j)
+      if (s[i] == rej[j])
+	return (char *) s + i;
+  return NULL;
+}
+#endif
+
+static void
+do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
+{
+  RES_TYPE res = CALL (impl, s, rej);
+  if (res != exp_res)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     (void *) res, (void *) exp_res);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, rej);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t pos, size_t len)
+{
+  size_t i;
+  int c;
+  RES_TYPE result;
+  char *rej, *s;
+
+  align &= 7;
+  if (align + pos + 10 >= page_size || len > 240)
+    return;
+
+  rej = (char *) (buf2 + (random () & 255));
+  s = (char *) (buf1 + align);
+
+  for (i = 0; i < len; ++i)
+    {
+      rej[i] = random () & 255;
+      if (!rej[i])
+	rej[i] = random () & 255;
+      if (!rej[i])
+	rej[i] = 1 + (random () & 127);
+    }
+  rej[len] = '\0';
+  for (c = 1; c <= 255; ++c)
+    if (strchr (rej, c) == NULL)
+      break;
+
+  for (i = 0; i < pos; ++i)
+    {
+      s[i] = random () & 255;
+      if (strchr (rej, s[i]))
+	{
+	  s[i] = random () & 255;
+	  if (strchr (rej, s[i]))
+	    s[i] = c;
+	}
+    }
+  s[pos] = rej[random () % (len + 1)];
+  if (s[pos])
+    {
+      for (i = pos + 1; i < pos + 10; ++i)
+	s[i] = random () & 255;
+      s[i] = '\0';
+    }
+  result = STRPBRK_RESULT (s, pos);
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd, rej len %2zd:", pos, align, len);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s, rej, result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%32s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, 512, i);
+      do_test (i, 512, i);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 4);
+      do_test (i, 16 << i, 4);
+    }
+
+  for (i = 1; i < 8; ++i)
+    do_test (i, 64, 10);
+
+  for (i = 0; i < 64; ++i)
+    do_test (0, i, 6);
+
+  return ret;
+}
+
+#include "../test-skeleton.c"