/* Measure strcat functions. Copyright (C) 2013-2014 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 #define TEST_NAME "strcat" #include "bench-string.h" typedef char *(*proto_t) (char *, const char *); char *simple_strcat (char *, const char *); IMPL (simple_strcat, 0) IMPL (strcat, 1) char * simple_strcat (char *dst, const char *src) { char *ret = dst; while (*dst++ != '\0'); --dst; while ((*dst++ = *src++) != '\0'); return ret; } static void do_one_test (impl_t *impl, char *dst, const char *src) { size_t k = strlen (dst), i, iters = INNER_LOOP_ITERS; timing_t start, stop, cur; if (CALL (impl, dst, src) != dst) { error (0, 0, "Wrong result in function %s %p %p", impl->name, CALL (impl, dst, src), dst); ret = 1; return; } if (strcmp (dst + k, src) != 0) { error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"", impl->name, dst, src); ret = 1; return; } TIMING_NOW (start); for (i = 0; i < iters; ++i) { dst[k] = '\0'; CALL (impl, dst, src); } TIMING_NOW (stop); TIMING_DIFF (cur, start, stop); TIMING_PRINT_MEAN ((double) cur, (double) iters); } static void do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char) { size_t i; char *s1, *s2; align1 &= 7; if (align1 + len1 >= page_size) return; align2 &= 7; if (align2 + len1 + len2 >= page_size) return; s1 = (char *) (buf1 + align1); s2 = (char *) (buf2 + align2); for (i = 0; i < len1; ++i) s1[i] = 32 + 23 * i % (max_char - 32); s1[len1] = '\0'; for (i = 0; i < len2; i++) s2[i] = 32 + 23 * i % (max_char - 32); printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len1, len2, align1, align2); FOR_EACH_IMPL (impl, 0) { s2[len2] = '\0'; do_one_test (impl, s2, s1); } putchar ('\n'); } int test_main (void) { size_t i; test_init (); printf ("%28s", ""); FOR_EACH_IMPL (impl, 0) printf ("\t%s", impl->name); putchar ('\n'); for (i = 0; i < 16; ++i) { do_test (0, 0, i, i, 127); do_test (0, 0, i, i, 255); do_test (0, i, i, i, 127); do_test (i, 0, i, i, 255); } for (i = 1; i < 8; ++i) { do_test (0, 0, 8 << i, 8 << i, 127); do_test (8 - i, 2 * i, 8 << i, 8 << i, 127); do_test (0, 0, 8 << i, 2 << i, 127); do_test (8 - i, 2 * i, 8 << i, 2 << i, 127); } for (i = 1; i < 8; ++i) { do_test (i, 2 * i, 8 << i, 1, 127); do_test (2 * i, i, 8 << i, 1, 255); do_test (i, i, 8 << i, 10, 127); do_test (i, i, 8 << i, 10, 255); } return ret; } #include "../test-skeleton.c"