From 9702047480d9002522936c5e1e1ebe16f696880d Mon Sep 17 00:00:00 2001 From: Siddhesh Poyarekar Date: Tue, 4 Jun 2013 16:48:56 +0530 Subject: 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. --- benchtests/bench-strlen.c | 149 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) create mode 100644 benchtests/bench-strlen.c (limited to 'benchtests/bench-strlen.c') diff --git a/benchtests/bench-strlen.c b/benchtests/bench-strlen.c new file mode 100644 index 0000000..63b1e93 --- /dev/null +++ b/benchtests/bench-strlen.c @@ -0,0 +1,149 @@ +/* Measure STRLEN 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 + . */ + +#define TEST_MAIN +#ifndef WIDE +# define TEST_NAME "strlen" +#else +# define TEST_NAME "wcslen" +#endif +#include "bench-string.h" + +#ifndef WIDE +# define STRLEN strlen +# define CHAR char +# define MAX_CHAR CHAR_MAX +#else +# include +# define STRLEN wcslen +# define CHAR wchar_t +# define MAX_CHAR WCHAR_MAX +#endif + +typedef size_t (*proto_t) (const CHAR *); + +size_t +simple_STRLEN (const CHAR *s) +{ + const CHAR *p; + + for (p = s; *p; ++p); + return p - s; +} + +#ifndef WIDE +size_t +builtin_strlen (const CHAR *p) +{ + return __builtin_strlen (p); +} +IMPL (builtin_strlen, 0) +#endif + +IMPL (simple_STRLEN, 0) +IMPL (STRLEN, 1) + + +static void +do_one_test (impl_t *impl, const CHAR *s, size_t exp_len) +{ + size_t len = CALL (impl, s); + if (len != exp_len) + { + error (0, 0, "Wrong result in function %s %zd %zd", impl->name, + len, exp_len); + 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); + 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 len) +{ + size_t i; + + align &= 63; + if (align + sizeof(CHAR) * len >= page_size) + return; + + CHAR *buf = (CHAR *) (buf1); + + for (i = 0; i < len; ++i) + buf[align + i] = 1 + 11111 * i % MAX_CHAR; + buf[align + len] = 0; + + if (HP_TIMING_AVAIL) + printf ("Length %4zd, alignment %2zd:", len, align); + + FOR_EACH_IMPL (impl, 0) + do_one_test (impl, (CHAR *) (buf + align), len); + + if (HP_TIMING_AVAIL) + 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'); + + /* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/ + + for (i = 1; i < 8; ++i) + { + do_test (sizeof(CHAR) * i, i); + do_test (0, i); + } + + for (i = 2; i <= 12; ++i) + { + do_test (0, 1 << i); + do_test (sizeof(CHAR) * 7, 1 << i); + do_test (sizeof(CHAR) * i, 1 << i); + do_test (sizeof(CHAR) * i, (size_t)((1 << i) / 1.5)); + } + + return ret; +} + +#include "../test-skeleton.c" -- cgit v1.1