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Diffstat (limited to 'REORG.TODO/benchtests/bench-strspn.c')
| -rw-r--r-- | REORG.TODO/benchtests/bench-strspn.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/REORG.TODO/benchtests/bench-strspn.c b/REORG.TODO/benchtests/bench-strspn.c new file mode 100644 index 0000000000..81bc170bfe --- /dev/null +++ b/REORG.TODO/benchtests/bench-strspn.c @@ -0,0 +1,192 @@ +/* Measure strspn 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 "strspn" +#else +# define TEST_NAME "wcsspn" +#endif /* WIDE */ +#include "bench-string.h" + +#ifndef WIDE +# define STRSPN strspn +# define CHAR char +# define SIMPLE_STRSPN simple_strspn +# define STUPID_STRSPN stupid_strspn +# define STRLEN strlen +# define STRCHR strchr +# define BIG_CHAR CHAR_MAX +# define SMALL_CHAR 127 +#else +# include <wchar.h> +# define STRSPN wcsspn +# define CHAR wchar_t +# define SIMPLE_STRSPN simple_wcsspn +# define STUPID_STRSPN stupid_wcsspn +# define STRLEN wcslen +# define STRCHR wcschr +# define BIG_CHAR WCHAR_MAX +# define SMALL_CHAR 1273 +#endif /* WIDE */ + +typedef size_t (*proto_t) (const CHAR *, const CHAR *); +size_t SIMPLE_STRSPN (const CHAR *, const CHAR *); +size_t STUPID_STRSPN (const CHAR *, const CHAR *); + +IMPL (STUPID_STRSPN, 0) +IMPL (SIMPLE_STRSPN, 0) +IMPL (STRSPN, 1) + +size_t +SIMPLE_STRSPN (const CHAR *s, const CHAR *acc) +{ + const CHAR *r, *str = s; + CHAR c; + + while ((c = *s++) != '\0') + { + for (r = acc; *r != '\0'; ++r) + if (*r == c) + break; + if (*r == '\0') + return s - str - 1; + } + return s - str - 1; +} + +size_t +STUPID_STRSPN (const CHAR *s, const CHAR *acc) +{ + size_t ns = STRLEN (s), nacc = STRLEN (acc); + size_t i, j; + + for (i = 0; i < ns; ++i) + { + for (j = 0; j < nacc; ++j) + if (s[i] == acc[j]) + break; + if (j == nacc) + return i; + } + return i; +} + +static void +do_one_test (impl_t *impl, const CHAR *s, const CHAR *acc, size_t exp_res) +{ + size_t res = CALL (impl, s, acc), i, iters = INNER_LOOP_ITERS; + timing_t start, stop, cur; + + if (res != exp_res) + { + error (0, 0, "Wrong result in function %s %p %p", impl->name, + (void *) res, (void *) exp_res); + ret = 1; + return; + } + + TIMING_NOW (start); + for (i = 0; i < iters; ++i) + { + CALL (impl, s, acc); + } + TIMING_NOW (stop); + + TIMING_DIFF (cur, start, stop); + + TIMING_PRINT_MEAN ((double) cur, (double) iters); +} + +static void +do_test (size_t align, size_t pos, size_t len) +{ + size_t i; + CHAR *acc, *s; + + align &= 7; + if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240 || ! len) + return; + + acc = (CHAR *) (buf2) + (random () & 255); + s = (CHAR *) (buf1) + align; + + for (i = 0; i < len; ++i) + { + acc[i] = random () & BIG_CHAR; + if (!acc[i]) + acc[i] = random () & BIG_CHAR; + if (!acc[i]) + acc[i] = 1 + (random () & SMALL_CHAR); + } + acc[len] = '\0'; + + for (i = 0; i < pos; ++i) + s[i] = acc[random () % len]; + s[pos] = random () & BIG_CHAR; + if (STRCHR (acc, s[pos])) + s[pos] = '\0'; + else + { + for (i = pos + 1; i < pos + 10; ++i) + s[i] = random () & BIG_CHAR; + s[i] = '\0'; + } + + printf ("Length %4zd, alignment %2zd, acc len %2zd:", pos, align, len); + + FOR_EACH_IMPL (impl, 0) + do_one_test (impl, s, acc, pos); + + 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 <support/test-driver.c> |