diff options
Diffstat (limited to 'benchtests/bench-strncmp.c')
| -rw-r--r-- | benchtests/bench-strncmp.c | 110 |
1 files changed, 81 insertions, 29 deletions
diff --git a/benchtests/bench-strncmp.c b/benchtests/bench-strncmp.c index b7a01fde64..6673a53521 100644 --- a/benchtests/bench-strncmp.c +++ b/benchtests/bench-strncmp.c @@ -150,43 +150,43 @@ do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len, size_t if (n == 0) return; - align1 &= 63; + align1 &= getpagesize () - 1; if (align1 + (n + 1) * CHARBYTES >= page_size) return; - align2 &= 7; + align2 &= getpagesize () - 1; if (align2 + (n + 1) * CHARBYTES >= page_size) return; json_element_object_begin (json_ctx); - json_attr_uint (json_ctx, "strlen", (double) len); - json_attr_uint (json_ctx, "len", (double) n); - json_attr_uint (json_ctx, "align1", (double) align1); - json_attr_uint (json_ctx, "align2", (double) align2); + json_attr_uint (json_ctx, "strlen", (double)len); + json_attr_uint (json_ctx, "len", (double)n); + json_attr_uint (json_ctx, "align1", (double)align1); + json_attr_uint (json_ctx, "align2", (double)align2); json_array_begin (json_ctx, "timings"); FOR_EACH_IMPL (impl, 0) - { - alloc_bufs (); - s1 = (CHAR *) (buf1 + align1); - s2 = (CHAR *) (buf2 + align2); - - for (i = 0; i < n; i++) - s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char; - - s1[n] = 24 + exp_result; - s2[n] = 23; - s1[len] = 0; - s2[len] = 0; - if (exp_result < 0) - s2[len] = 32; - else if (exp_result > 0) - s1[len] = 64; - if (len >= n) - s2[n - 1] -= exp_result; + { + alloc_bufs (); + s1 = (CHAR *)(buf1 + align1); + s2 = (CHAR *)(buf2 + align2); + + for (i = 0; i < n; i++) + s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char; + + s1[n] = 24 + exp_result; + s2[n] = 23; + s1[len] = 0; + s2[len] = 0; + if (exp_result < 0) + s2[len] = 32; + else if (exp_result > 0) + s1[len] = 64; + if (len >= n) + s2[n - 1] -= exp_result; - do_one_test (json_ctx, impl, s1, s2, n, exp_result); - } + do_one_test (json_ctx, impl, s1, s2, n, exp_result); + } json_array_end (json_ctx); json_element_object_end (json_ctx); @@ -319,7 +319,8 @@ int test_main (void) { json_ctx_t json_ctx; - size_t i; + size_t i, j, len; + size_t pg_sz = getpagesize (); test_init (); @@ -334,12 +335,12 @@ test_main (void) json_array_begin (&json_ctx, "ifuncs"); FOR_EACH_IMPL (impl, 0) - json_element_string (&json_ctx, impl->name); + json_element_string (&json_ctx, impl->name); json_array_end (&json_ctx); json_array_begin (&json_ctx, "results"); - for (i =0; i < 16; ++i) + for (i = 0; i < 16; ++i) { do_test (&json_ctx, 0, 0, 8, i, 127, 0); do_test (&json_ctx, 0, 0, 8, i, 127, -1); @@ -361,6 +362,57 @@ test_main (void) do_test (&json_ctx, i, 3 * i, 8, i, 255, -1); } + for (len = 0; len <= 128; len += 64) + { + for (i = 1; i <= 8192;) + { + /* No page crosses. */ + do_test (&json_ctx, 0, 0, i, i + len, 127, 0); + do_test (&json_ctx, i * CHARBYTES, 0, i, i + len, 127, 0); + do_test (&json_ctx, 0, i * CHARBYTES, i, i + len, 127, 0); + + /* False page crosses. */ + do_test (&json_ctx, pg_sz / 2, pg_sz / 2 - CHARBYTES, i, i + len, + 127, 0); + do_test (&json_ctx, pg_sz / 2 - CHARBYTES, pg_sz / 2, i, i + len, + 127, 0); + + do_test (&json_ctx, pg_sz - (i * CHARBYTES), 0, i, i + len, 127, + 0); + do_test (&json_ctx, 0, pg_sz - (i * CHARBYTES), i, i + len, 127, + 0); + + /* Real page cross. */ + for (j = 16; j < 128; j += 16) + { + do_test (&json_ctx, pg_sz - j, 0, i, i + len, 127, 0); + do_test (&json_ctx, 0, pg_sz - j, i, i + len, 127, 0); + + do_test (&json_ctx, pg_sz - j, pg_sz - j / 2, i, i + len, + 127, 0); + do_test (&json_ctx, pg_sz - j / 2, pg_sz - j, i, i + len, + 127, 0); + } + + if (i < 32) + { + ++i; + } + else if (i < 160) + { + i += 8; + } + else if (i < 256) + { + i += 32; + } + else + { + i *= 2; + } + } + } + for (i = 1; i < 8; ++i) { do_test (&json_ctx, 0, 0, 8 << i, 16 << i, 127, 0); |