diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | benchtests/Makefile | 2 | ||||
| -rw-r--r-- | benchtests/bench-strtok.c | 205 |
3 files changed, 211 insertions, 1 deletions
@@ -1,3 +1,8 @@ +2013-12-19 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> + + * benchtests/Makefile: Add bench-strtok. + * benchtests/bench-strtok.c: New file: strtok benchtest. + 2013-12-19 Allan McRae <allan@archlinux.org> * manual/install.texi: Suppress menu for plain text output. diff --git a/benchtests/Makefile b/benchtests/Makefile index eea384d..117228b 100644 --- a/benchtests/Makefile +++ b/benchtests/Makefile @@ -28,7 +28,7 @@ string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \ mempcpy memset rawmemchr stpcpy stpncpy strcasecmp strcasestr \ strcat strchr strchrnul strcmp strcpy strcspn strlen \ strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \ - strspn strstr strcpy_chk stpcpy_chk memrchr strsep + strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok string-bench-all := $(string-bench) stdlib-bench := strtod diff --git a/benchtests/bench-strtok.c b/benchtests/bench-strtok.c new file mode 100644 index 0000000..c76d0e3 --- /dev/null +++ b/benchtests/bench-strtok.c @@ -0,0 +1,205 @@ +/* Measure strtok 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 + <http://www.gnu.org/licenses/>. */ + +#define TEST_MAIN +#define TEST_NAME "strtok" +#include "bench-string.h" + +char * +simple_strtok (char *s1, char *s2) +{ + static char *saveptr; + char *token; + ssize_t i = 0, j = 0; + int found = 0; + size_t s2len = strlen (s2); + + if (s1 == NULL) + s1 = saveptr; + if (s1 == NULL || *s1 == '\0') + return NULL; + + while (!found) + { + if (s1[i] == '\0') + { + saveptr = NULL; + return NULL; + } + for (j = 0; j < s2len; j++) + { + if (s1[i] == s2[j]) + { + i++; + found = 0; + break; + } + found = 1; + } + } + token = s1 + i; + i++; + found = 0; + while (!found) + { + if (s1[i] == '\0') + { + saveptr = NULL; + return token; + } + for (j = 0; j < s2len; j++) + { + if (s1[i] == s2[j]) + { + found = 1; + break; + } + } + i++; + } + s1[i - 1] = '\0'; + saveptr = s1 + i; + return token; +} + +typedef char *(*proto_t) (const char *, const char *); + +IMPL (simple_strtok, 0) +IMPL (strtok, 1) + +static void +do_one_test (impl_t * impl, const char *s1, const char *s2) +{ + size_t i, iters = INNER_LOOP_ITERS; + timing_t start, stop, cur; + TIMING_NOW (start); + for (i = 0; i < iters; ++i) + { + CALL (impl, s1, s2); + CALL (impl, NULL, s2); + CALL (impl, NULL, s2); + } + 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 fail) +{ + char *s2 = (char *) (buf2 + align2); + static const char d[] = "1234567890abcdef"; +#define dl (sizeof (d) - 1) + char *ss2 = s2; + for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0) + { + size_t t = l > dl ? dl : l; + ss2 = mempcpy (ss2, d, t); + } + s2[len2] = '\0'; + + printf ("Length %4zd/%zd, alignment %2zd/%2zd, %s:", + len1, len2, align1, align2, fail ? "fail" : "found"); + + FOR_EACH_IMPL (impl, 0) + { + char *s1 = (char *) (buf1 + align1); + if (fail) + { + char *ss1 = s1; + for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0) + { + size_t t = l > dl ? dl : l; + memcpy (ss1, d, t); + ++ss1[len2 > 7 ? 7 : len2 - 1]; + ss1 += t; + } + } + else + { + memset (s1, '0', len1); + memcpy (s1 + (len1 - len2) - 2, s2, len2); + if ((len1 / len2) > 4) + memcpy (s1 + (len1 - len2) - (3 * len2), s2, len2); + } + s1[len1] = '\0'; + do_one_test (impl, s1, s2); + } + putchar ('\n'); +} + +static int +test_main (void) +{ + test_init (); + + printf ("%23s", ""); + FOR_EACH_IMPL (impl, 0) + printf ("\t%s", impl->name); + putchar ('\n'); + + for (size_t klen = 2; klen < 32; ++klen) + for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen) + { + do_test (0, 0, hlen, klen, 0); + do_test (0, 0, hlen, klen, 1); + do_test (0, 3, hlen, klen, 0); + do_test (0, 3, hlen, klen, 1); + do_test (0, 9, hlen, klen, 0); + do_test (0, 9, hlen, klen, 1); + do_test (0, 15, hlen, klen, 0); + do_test (0, 15, hlen, klen, 1); + + do_test (3, 0, hlen, klen, 0); + do_test (3, 0, hlen, klen, 1); + do_test (3, 3, hlen, klen, 0); + do_test (3, 3, hlen, klen, 1); + do_test (3, 9, hlen, klen, 0); + do_test (3, 9, hlen, klen, 1); + do_test (3, 15, hlen, klen, 0); + do_test (3, 15, hlen, klen, 1); + + do_test (9, 0, hlen, klen, 0); + do_test (9, 0, hlen, klen, 1); + do_test (9, 3, hlen, klen, 0); + do_test (9, 3, hlen, klen, 1); + do_test (9, 9, hlen, klen, 0); + do_test (9, 9, hlen, klen, 1); + do_test (9, 15, hlen, klen, 0); + do_test (9, 15, hlen, klen, 1); + + do_test (15, 0, hlen, klen, 0); + do_test (15, 0, hlen, klen, 1); + do_test (15, 3, hlen, klen, 0); + do_test (15, 3, hlen, klen, 1); + do_test (15, 9, hlen, klen, 0); + do_test (15, 9, hlen, klen, 1); + do_test (15, 15, hlen, klen, 0); + do_test (15, 15, hlen, klen, 1); + } + do_test (0, 0, page_size - 1, 16, 0); + do_test (0, 0, page_size - 1, 16, 1); + + return ret; +} + +#include "../test-skeleton.c" |