| 1 | /* |
| 2 | * fio - the flexible io tester |
| 3 | * |
| 4 | * Copyright (C) 2005 Jens Axboe <axboe@suse.de> |
| 5 | * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk> |
| 6 | * |
| 7 | * The license below covers all files distributed with fio unless otherwise |
| 8 | * noted in the file itself. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | */ |
| 24 | #include <unistd.h> |
| 25 | #include <fcntl.h> |
| 26 | #include <string.h> |
| 27 | #include <limits.h> |
| 28 | #include <signal.h> |
| 29 | #include <time.h> |
| 30 | #include <locale.h> |
| 31 | #include <assert.h> |
| 32 | #include <time.h> |
| 33 | #include <sys/stat.h> |
| 34 | #include <sys/wait.h> |
| 35 | #include <sys/ipc.h> |
| 36 | #include <sys/shm.h> |
| 37 | #include <sys/mman.h> |
| 38 | |
| 39 | #include "fio.h" |
| 40 | #include "hash.h" |
| 41 | #include "smalloc.h" |
| 42 | #include "verify.h" |
| 43 | #include "trim.h" |
| 44 | #include "diskutil.h" |
| 45 | #include "cgroup.h" |
| 46 | #include "profile.h" |
| 47 | #include "lib/rand.h" |
| 48 | #include "memalign.h" |
| 49 | #include "server.h" |
| 50 | |
| 51 | unsigned long page_mask; |
| 52 | unsigned long page_size; |
| 53 | |
| 54 | int groupid = 0; |
| 55 | unsigned int thread_number = 0; |
| 56 | unsigned int nr_process = 0; |
| 57 | unsigned int nr_thread = 0; |
| 58 | int shm_id = 0; |
| 59 | int temp_stall_ts; |
| 60 | unsigned long done_secs = 0; |
| 61 | |
| 62 | /* |
| 63 | * Just expose an empty list, if the OS does not support disk util stats |
| 64 | */ |
| 65 | #ifndef FIO_HAVE_DISK_UTIL |
| 66 | FLIST_HEAD(disk_list); |
| 67 | #endif |
| 68 | |
| 69 | unsigned long arch_flags = 0; |
| 70 | |
| 71 | static int endian_check(void) |
| 72 | { |
| 73 | union { |
| 74 | uint8_t c[8]; |
| 75 | uint64_t v; |
| 76 | } u; |
| 77 | int le = 0, be = 0; |
| 78 | |
| 79 | u.v = 0x12; |
| 80 | if (u.c[7] == 0x12) |
| 81 | be = 1; |
| 82 | else if (u.c[0] == 0x12) |
| 83 | le = 1; |
| 84 | |
| 85 | #if defined(FIO_LITTLE_ENDIAN) |
| 86 | if (be) |
| 87 | return 1; |
| 88 | #elif defined(FIO_BIG_ENDIAN) |
| 89 | if (le) |
| 90 | return 1; |
| 91 | #else |
| 92 | return 1; |
| 93 | #endif |
| 94 | |
| 95 | if (!le && !be) |
| 96 | return 1; |
| 97 | |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | int main(int argc, char *argv[], char *envp[]) |
| 102 | { |
| 103 | long ps; |
| 104 | |
| 105 | if (endian_check()) { |
| 106 | log_err("fio: endianness settings appear wrong.\n"); |
| 107 | log_err("fio: please report this to fio@vger.kernel.org\n"); |
| 108 | return 1; |
| 109 | } |
| 110 | |
| 111 | arch_init(envp); |
| 112 | |
| 113 | sinit(); |
| 114 | |
| 115 | /* |
| 116 | * We need locale for number printing, if it isn't set then just |
| 117 | * go with the US format. |
| 118 | */ |
| 119 | if (!getenv("LC_NUMERIC")) |
| 120 | setlocale(LC_NUMERIC, "en_US"); |
| 121 | |
| 122 | ps = sysconf(_SC_PAGESIZE); |
| 123 | if (ps < 0) { |
| 124 | log_err("Failed to get page size\n"); |
| 125 | return 1; |
| 126 | } |
| 127 | |
| 128 | page_size = ps; |
| 129 | page_mask = ps - 1; |
| 130 | |
| 131 | fio_keywords_init(); |
| 132 | |
| 133 | if (parse_options(argc, argv)) |
| 134 | return 1; |
| 135 | |
| 136 | if (nr_clients) |
| 137 | return fio_handle_clients(); |
| 138 | else |
| 139 | return fio_backend(); |
| 140 | } |