/* Measure STRCHR 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 #ifdef WIDE # define TEST_NAME "wcsrchr" #else # define TEST_NAME "strrchr" #endif #include "bench-string.h" #ifdef WIDE # include <wchar.h> # define SIMPLE_STRRCHR simple_wcsrchr # define STRRCHR wcsrchr # define CHAR wchar_t # define UCHAR wchar_t # define BIG_CHAR WCHAR_MAX # define SMALL_CHAR 1273 #else # define SIMPLE_STRRCHR simple_strrchr # define STRRCHR strrchr # define CHAR char # define UCHAR unsigned char # define BIG_CHAR CHAR_MAX # define SMALL_CHAR 127 #endif typedef CHAR *(*proto_t) (const CHAR *, int); CHAR *SIMPLE_STRRCHR (const CHAR *, int); IMPL (SIMPLE_STRRCHR, 0) IMPL (STRRCHR, 1) CHAR * SIMPLE_STRRCHR (const CHAR *s, int c) { const CHAR *ret = NULL; for (; *s != '\0'; ++s) if (*s == (CHAR) c) ret = s; return (CHAR *) (c == '\0' ? s : ret); } static void do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res) { CHAR *res = CALL (impl, s, c); size_t 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, res, exp_res); ret = 1; return; } TIMING_NOW (start); for (i = 0; i < iters; ++i) { CALL (impl, s, c); } 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, int seek_char, int max_char) /* For wcsrchr: align here means align not in bytes, but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ { size_t i; CHAR *result; CHAR *buf = (CHAR *) buf1; align &= 7; if ((align + len) * sizeof (CHAR) >= page_size) return; for (i = 0; i < len; ++i) { buf[align + i] = (random () * random ()) & max_char; if (!buf[align + i]) buf[align + i] = (random () * random ()) & max_char; if (!buf[align + i]) buf[align + i] = 1; if ((i > pos || pos >= len) && buf[align + i] == seek_char) buf[align + i] = seek_char + 10 + (random () & 15); } buf[align + len] = 0; if (pos < len) { buf[align + pos] = seek_char; result = (CHAR *) (buf + align + pos); } else if (seek_char == 0) result = (CHAR *) (buf + align + len); else result = NULL; printf ("Length %4zd, alignment in bytes %2zd:", len, align * sizeof (CHAR)); FOR_EACH_IMPL (impl, 0) do_one_test (impl, (CHAR *) (buf + align), seek_char, result); 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, 16 << i, 2048, 23, SMALL_CHAR); do_test (i, 16 << i, 2048, 23, SMALL_CHAR); } for (i = 1; i < 8; ++i) { do_test (i, 64, 256, 23, SMALL_CHAR); do_test (i, 64, 256, 23, BIG_CHAR); } for (i = 0; i < 32; ++i) { do_test (0, i, i + 1, 23, SMALL_CHAR); do_test (0, i, i + 1, 23, BIG_CHAR); } for (i = 1; i < 8; ++i) { do_test (0, 16 << i, 2048, 0, SMALL_CHAR); do_test (i, 16 << i, 2048, 0, SMALL_CHAR); } for (i = 1; i < 8; ++i) { do_test (i, 64, 256, 0, SMALL_CHAR); do_test (i, 64, 256, 0, BIG_CHAR); } for (i = 0; i < 32; ++i) { do_test (0, i, i + 1, 0, SMALL_CHAR); do_test (0, i, i + 1, 0, BIG_CHAR); } return ret; } #include <support/test-driver.c>