diff options
Diffstat (limited to 'third_party/git/t/helper/test-path-utils.c')
| -rw-r--r-- | third_party/git/t/helper/test-path-utils.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/third_party/git/t/helper/test-path-utils.c b/third_party/git/t/helper/test-path-utils.c index 409034cf4eef..5d543ad21f89 100644 --- a/third_party/git/t/helper/test-path-utils.c +++ b/third_party/git/t/helper/test-path-utils.c @@ -185,99 +185,6 @@ static int cmp_by_st_size(const void *a, const void *b) return x > y ? -1 : (x < y ? +1 : 0); } -/* - * A very simple, reproducible pseudo-random generator. Copied from - * `test-genrandom.c`. - */ -static uint64_t my_random_value = 1234; - -static uint64_t my_random(void) -{ - my_random_value = my_random_value * 1103515245 + 12345; - return my_random_value; -} - -/* - * A fast approximation of the square root, without requiring math.h. - * - * It uses Newton's method to approximate the solution of 0 = x^2 - value. - */ -static double my_sqrt(double value) -{ - const double epsilon = 1e-6; - double x = value; - - if (value == 0) - return 0; - - for (;;) { - double delta = (value / x - x) / 2; - if (delta < epsilon && delta > -epsilon) - return x + delta; - x += delta; - } -} - -static int protect_ntfs_hfs_benchmark(int argc, const char **argv) -{ - size_t i, j, nr, min_len = 3, max_len = 20; - char **names; - int repetitions = 15, file_mode = 0100644; - uint64_t begin, end; - double m[3][2], v[3][2]; - uint64_t cumul; - double cumul2; - - if (argc > 1 && !strcmp(argv[1], "--with-symlink-mode")) { - file_mode = 0120000; - argc--; - argv++; - } - - nr = argc > 1 ? strtoul(argv[1], NULL, 0) : 1000000; - ALLOC_ARRAY(names, nr); - - if (argc > 2) { - min_len = strtoul(argv[2], NULL, 0); - if (argc > 3) - max_len = strtoul(argv[3], NULL, 0); - if (min_len > max_len) - die("min_len > max_len"); - } - - for (i = 0; i < nr; i++) { - size_t len = min_len + (my_random() % (max_len + 1 - min_len)); - - names[i] = xmallocz(len); - while (len > 0) - names[i][--len] = (char)(' ' + (my_random() % ('\x7f' - ' '))); - } - - for (protect_ntfs = 0; protect_ntfs < 2; protect_ntfs++) - for (protect_hfs = 0; protect_hfs < 2; protect_hfs++) { - cumul = 0; - cumul2 = 0; - for (i = 0; i < repetitions; i++) { - begin = getnanotime(); - for (j = 0; j < nr; j++) - verify_path(names[j], file_mode); - end = getnanotime(); - printf("protect_ntfs = %d, protect_hfs = %d: %lfms\n", protect_ntfs, protect_hfs, (end-begin) / (double)1e6); - cumul += end - begin; - cumul2 += (end - begin) * (end - begin); - } - m[protect_ntfs][protect_hfs] = cumul / (double)repetitions; - v[protect_ntfs][protect_hfs] = my_sqrt(cumul2 / (double)repetitions - m[protect_ntfs][protect_hfs] * m[protect_ntfs][protect_hfs]); - printf("mean: %lfms, stddev: %lfms\n", m[protect_ntfs][protect_hfs] / (double)1e6, v[protect_ntfs][protect_hfs] / (double)1e6); - } - - for (protect_ntfs = 0; protect_ntfs < 2; protect_ntfs++) - for (protect_hfs = 0; protect_hfs < 2; protect_hfs++) - printf("ntfs=%d/hfs=%d: %lf%% slower\n", protect_ntfs, protect_hfs, (m[protect_ntfs][protect_hfs] - m[0][0]) * 100 / m[0][0]); - - return 0; -} - int cmd__path_utils(int argc, const char **argv) { if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) { @@ -448,26 +355,6 @@ int cmd__path_utils(int argc, const char **argv) return !!res; } - if (argc > 1 && !strcmp(argv[1], "protect_ntfs_hfs")) - return !!protect_ntfs_hfs_benchmark(argc - 1, argv + 1); - - if (argc > 1 && !strcmp(argv[1], "is_valid_path")) { - int res = 0, expect = 1, i; - - for (i = 2; i < argc; i++) - if (!strcmp("--not", argv[i])) - expect = 0; - else if (expect != is_valid_path(argv[i])) - res = error("'%s' is%s a valid path", - argv[i], expect ? " not" : ""); - else - fprintf(stderr, - "'%s' is%s a valid path\n", - argv[i], expect ? "" : " not"); - - return !!res; - } - fprintf(stderr, "%s: unknown function name: %s\n", argv[0], argv[1] ? argv[1] : "(there was none)"); return 1; |