/* Test and measure STRCHR functions. Copyright (C) 1999-2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Written by Jakub Jelinek <jakub@redhat.com>, 1999. Added wcschr support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011 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 # ifdef USE_FOR_STRCHRNUL # define TEST_NAME "strchrnul" # else # define TEST_NAME "strchr" # endif #else # define TEST_NAME "wcschr" #endif #include "test-string.h" #ifndef WIDE # ifdef USE_FOR_STRCHRNUL # define STRCHR strchrnul # define stupid_STRCHR stupid_STRCHRNUL # define simple_STRCHR simple_STRCHRNUL # else # define STRCHR strchr # endif # define STRLEN strlen # define CHAR char # define BIG_CHAR CHAR_MAX # define MIDDLE_CHAR 127 # define SMALL_CHAR 23 # define UCHAR unsigned char #else # include <wchar.h> # define STRCHR wcschr # define STRLEN wcslen # define CHAR wchar_t # define BIG_CHAR WCHAR_MAX # define MIDDLE_CHAR 1121 # define SMALL_CHAR 851 # define UCHAR wchar_t #endif #ifdef USE_FOR_STRCHRNUL # define NULLRET(endptr) endptr #else # define NULLRET(endptr) NULL #endif typedef CHAR *(*proto_t) (const CHAR *, int); CHAR * simple_STRCHR (const CHAR *s, int c) { for (; *s != (CHAR) c; ++s) if (*s == '\0') return NULLRET ((CHAR *) s); return (CHAR *) s; } CHAR * stupid_STRCHR (const CHAR *s, int c) { size_t n = STRLEN (s) + 1; while (n--) if (*s++ == (CHAR) c) return (CHAR *) s - 1; return NULLRET ((CHAR *) s - 1); } IMPL (stupid_STRCHR, 0) IMPL (simple_STRCHR, 0) IMPL (STRCHR, 1) static int check_result (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res) { CHAR *res = CALL (impl, s, c); if (res != exp_res) { error (0, 0, "Wrong result in function %s %#x %p %p", impl->name, c, res, exp_res); ret = 1; return -1; } return 0; } static void do_one_test (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res) { if (check_result (impl, s, c, exp_res) < 0) 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, c); 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, int seek_char, int max_char) /* For wcschr: 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 &= 15; if ((align + len) * sizeof (CHAR) >= page_size) return; for (i = 0; i < len; ++i) { buf[align + i] = 32 + 23 * i % max_char; if (buf[align + i] == seek_char) buf[align + i] = seek_char + 1; else if (buf[align + i] == 0) buf[align + i] = 1; } buf[align + len] = 0; if (pos < len) { buf[align + pos] = seek_char; result = buf + align + pos; } else if (seek_char == 0) result = buf + align + len; else result = NULLRET (buf + align + len); if (HP_TIMING_AVAIL) printf ("Length %4zd, alignment in bytes %2zd:", pos, align * sizeof (CHAR)); FOR_EACH_IMPL (impl, 0) do_one_test (impl, buf + align, seek_char, result); if (HP_TIMING_AVAIL) putchar ('\n'); } static void do_random_tests (void) { size_t i, j, n, align, pos, len; int seek_char; CHAR *result; UCHAR *p = (UCHAR *) (buf1 + page_size - 512 * sizeof (CHAR)); for (n = 0; n < ITERATIONS; n++) { /* For wcschr: align here means align not in bytes, but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)). */ align = random () & 15; pos = random () & 511; seek_char = random () & 255; if (pos + align >= 511) pos = 510 - align - (random () & 7); /* len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ len = random () & 511; if ((pos == len && seek_char) || (pos > len && (random () & 1))) len = pos + 1 + (random () & 7); if (len + align >= 512) len = 511 - align - (random () & 7); if (pos == len && seek_char) len = pos + 1; j = (pos > len ? pos : len) + align + 64; if (j > 512) j = 512; for (i = 0; i < j; i++) { if (i == pos + align) p[i] = seek_char; else if (i == len + align) p[i] = 0; else { p[i] = random () & 255; if (i < pos + align && p[i] == seek_char) p[i] = seek_char + 13; if (i < len + align && !p[i]) { p[i] = seek_char - 13; if (!p[i]) p[i] = 140; } } } if (pos <= len) result = (CHAR *) (p + pos + align); else if (seek_char == 0) result = (CHAR *) (p + len + align); else result = NULLRET ((CHAR *) (p + len + align)); FOR_EACH_IMPL (impl, 1) if (CALL (impl, (CHAR *) (p + align), seek_char) != result) { error (0, 0, "Iteration %zd - wrong result in function \ %s (align in bytes: %zd, seek_char: %d, len: %zd, pos: %zd) %p != %p, p %p", n, impl->name, align * sizeof (CHAR), seek_char, len, pos, CALL (impl, (CHAR *) (p + align), seek_char), result, p); ret = 1; } } } static void check1 (void) { char s[] __attribute__((aligned(16))) = "\xff"; char c = '\xfe'; char *exp_result = stupid_STRCHR (s, c); FOR_EACH_IMPL (impl, 0) check_result (impl, s, c, exp_result); } int test_main (void) { size_t i; test_init (); check1 (); 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, SMALL_CHAR, MIDDLE_CHAR); do_test (i, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR); } for (i = 1; i < 8; ++i) { do_test (i, 64, 256, SMALL_CHAR, MIDDLE_CHAR); do_test (i, 64, 256, SMALL_CHAR, BIG_CHAR); } for (i = 0; i < 32; ++i) { do_test (0, i, i + 1, SMALL_CHAR, MIDDLE_CHAR); do_test (0, i, i + 1, SMALL_CHAR, BIG_CHAR); } for (i = 1; i < 8; ++i) { do_test (0, 16 << i, 2048, 0, MIDDLE_CHAR); do_test (i, 16 << i, 2048, 0, MIDDLE_CHAR); } for (i = 1; i < 8; ++i) { do_test (i, 64, 256, 0, MIDDLE_CHAR); do_test (i, 64, 256, 0, BIG_CHAR); } for (i = 0; i < 32; ++i) { do_test (0, i, i + 1, 0, MIDDLE_CHAR); do_test (0, i, i + 1, 0, BIG_CHAR); } do_random_tests (); return ret; } #include "../test-skeleton.c"