| 1 | #ifndef FIO_FILE_H |
| 2 | #define FIO_FILE_H |
| 3 | |
| 4 | #include <string.h> |
| 5 | #include "compiler/compiler.h" |
| 6 | #include "io_ddir.h" |
| 7 | #include "flist.h" |
| 8 | #include "lib/zipf.h" |
| 9 | #include "lib/axmap.h" |
| 10 | #include "lib/lfsr.h" |
| 11 | #include "lib/gauss.h" |
| 12 | |
| 13 | /* |
| 14 | * The type of object we are working on |
| 15 | */ |
| 16 | enum fio_filetype { |
| 17 | FIO_TYPE_FILE = 1, /* plain file */ |
| 18 | FIO_TYPE_BD, /* block device */ |
| 19 | FIO_TYPE_CHAR, /* character device */ |
| 20 | FIO_TYPE_PIPE, /* pipe */ |
| 21 | }; |
| 22 | |
| 23 | enum fio_file_flags { |
| 24 | FIO_FILE_open = 1 << 0, /* file is open */ |
| 25 | FIO_FILE_closing = 1 << 1, /* file being closed */ |
| 26 | FIO_FILE_extend = 1 << 2, /* needs extend */ |
| 27 | FIO_FILE_done = 1 << 3, /* io completed to this file */ |
| 28 | FIO_FILE_size_known = 1 << 4, /* size has been set */ |
| 29 | FIO_FILE_hashed = 1 << 5, /* file is on hash */ |
| 30 | FIO_FILE_partial_mmap = 1 << 6, /* can't do full mmap */ |
| 31 | FIO_FILE_axmap = 1 << 7, /* uses axmap */ |
| 32 | FIO_FILE_lfsr = 1 << 8, /* lfsr is used */ |
| 33 | }; |
| 34 | |
| 35 | enum file_lock_mode { |
| 36 | FILE_LOCK_NONE, |
| 37 | FILE_LOCK_EXCLUSIVE, |
| 38 | FILE_LOCK_READWRITE, |
| 39 | }; |
| 40 | |
| 41 | /* |
| 42 | * How fio chooses what file to service next. Choice of uniformly random, or |
| 43 | * some skewed random variants, or just sequentially go through them or |
| 44 | * roundrobing. |
| 45 | */ |
| 46 | enum { |
| 47 | FIO_FSERVICE_RANDOM = 1, |
| 48 | FIO_FSERVICE_RR = 2, |
| 49 | FIO_FSERVICE_SEQ = 3, |
| 50 | __FIO_FSERVICE_NONUNIFORM = 0x100, |
| 51 | FIO_FSERVICE_ZIPF = __FIO_FSERVICE_NONUNIFORM | 4, |
| 52 | FIO_FSERVICE_PARETO = __FIO_FSERVICE_NONUNIFORM | 5, |
| 53 | FIO_FSERVICE_GAUSS = __FIO_FSERVICE_NONUNIFORM | 6, |
| 54 | |
| 55 | FIO_FSERVICE_SHIFT = 10, |
| 56 | }; |
| 57 | |
| 58 | /* |
| 59 | * No pre-allocation when laying down files, or call posix_fallocate(), or |
| 60 | * call fallocate() with FALLOC_FL_KEEP_SIZE set. |
| 61 | */ |
| 62 | enum fio_fallocate_mode { |
| 63 | FIO_FALLOCATE_NONE = 1, |
| 64 | FIO_FALLOCATE_POSIX = 2, |
| 65 | FIO_FALLOCATE_KEEP_SIZE = 3, |
| 66 | }; |
| 67 | |
| 68 | /* |
| 69 | * Each thread_data structure has a number of files associated with it, |
| 70 | * this structure holds state information for a single file. |
| 71 | */ |
| 72 | struct fio_file { |
| 73 | struct flist_head hash_list; |
| 74 | enum fio_filetype filetype; |
| 75 | |
| 76 | int fd; |
| 77 | int shadow_fd; |
| 78 | #ifdef WIN32 |
| 79 | HANDLE hFile; |
| 80 | HANDLE ioCP; |
| 81 | #endif |
| 82 | |
| 83 | /* |
| 84 | * filename and possible memory mapping |
| 85 | */ |
| 86 | unsigned int major, minor; |
| 87 | int fileno; |
| 88 | int bs; |
| 89 | char *file_name; |
| 90 | |
| 91 | /* |
| 92 | * size of the file, offset into file, and io size from that offset |
| 93 | */ |
| 94 | uint64_t real_file_size; |
| 95 | uint64_t file_offset; |
| 96 | uint64_t io_size; |
| 97 | |
| 98 | /* |
| 99 | * Track last end and last start of IO for a given data direction |
| 100 | */ |
| 101 | uint64_t last_pos[DDIR_RWDIR_CNT]; |
| 102 | uint64_t last_start[DDIR_RWDIR_CNT]; |
| 103 | |
| 104 | uint64_t first_write; |
| 105 | uint64_t last_write; |
| 106 | |
| 107 | /* |
| 108 | * Tracks the last iodepth number of completed writes, if data |
| 109 | * verification is enabled |
| 110 | */ |
| 111 | uint64_t *last_write_comp; |
| 112 | unsigned int last_write_idx; |
| 113 | |
| 114 | /* |
| 115 | * For use by the io engine |
| 116 | */ |
| 117 | uint64_t engine_data; |
| 118 | |
| 119 | /* |
| 120 | * if io is protected by a semaphore, this is set |
| 121 | */ |
| 122 | union { |
| 123 | struct fio_mutex *lock; |
| 124 | struct fio_rwlock *rwlock; |
| 125 | }; |
| 126 | |
| 127 | /* |
| 128 | * block map or LFSR for random io |
| 129 | */ |
| 130 | union { |
| 131 | struct axmap *io_axmap; |
| 132 | struct fio_lfsr lfsr; |
| 133 | }; |
| 134 | |
| 135 | /* |
| 136 | * Used for zipf random distribution |
| 137 | */ |
| 138 | union { |
| 139 | struct zipf_state zipf; |
| 140 | struct gauss_state gauss; |
| 141 | }; |
| 142 | |
| 143 | int references; |
| 144 | enum fio_file_flags flags; |
| 145 | |
| 146 | struct disk_util *du; |
| 147 | }; |
| 148 | |
| 149 | #define FILE_ENG_DATA(f) ((void *) (uintptr_t) (f)->engine_data) |
| 150 | #define FILE_SET_ENG_DATA(f, data) \ |
| 151 | ((f)->engine_data = (uintptr_t) (data)) |
| 152 | |
| 153 | struct file_name { |
| 154 | struct flist_head list; |
| 155 | char *filename; |
| 156 | }; |
| 157 | |
| 158 | #define FILE_FLAG_FNS(name) \ |
| 159 | static inline void fio_file_set_##name(struct fio_file *f) \ |
| 160 | { \ |
| 161 | (f)->flags = (enum fio_file_flags) ((f)->flags | FIO_FILE_##name); \ |
| 162 | } \ |
| 163 | static inline void fio_file_clear_##name(struct fio_file *f) \ |
| 164 | { \ |
| 165 | (f)->flags = (enum fio_file_flags) ((f)->flags & ~FIO_FILE_##name); \ |
| 166 | } \ |
| 167 | static inline int fio_file_##name(struct fio_file *f) \ |
| 168 | { \ |
| 169 | return ((f)->flags & FIO_FILE_##name) != 0; \ |
| 170 | } |
| 171 | |
| 172 | FILE_FLAG_FNS(open); |
| 173 | FILE_FLAG_FNS(closing); |
| 174 | FILE_FLAG_FNS(extend); |
| 175 | FILE_FLAG_FNS(done); |
| 176 | FILE_FLAG_FNS(size_known); |
| 177 | FILE_FLAG_FNS(hashed); |
| 178 | FILE_FLAG_FNS(partial_mmap); |
| 179 | FILE_FLAG_FNS(axmap); |
| 180 | FILE_FLAG_FNS(lfsr); |
| 181 | #undef FILE_FLAG_FNS |
| 182 | |
| 183 | /* |
| 184 | * File setup/shutdown |
| 185 | */ |
| 186 | struct thread_data; |
| 187 | extern void close_files(struct thread_data *); |
| 188 | extern void close_and_free_files(struct thread_data *); |
| 189 | extern uint64_t get_start_offset(struct thread_data *, struct fio_file *); |
| 190 | extern int __must_check setup_files(struct thread_data *); |
| 191 | extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *); |
| 192 | extern int __must_check generic_open_file(struct thread_data *, struct fio_file *); |
| 193 | extern int __must_check generic_close_file(struct thread_data *, struct fio_file *); |
| 194 | extern int __must_check generic_get_file_size(struct thread_data *, struct fio_file *); |
| 195 | extern int __must_check file_lookup_open(struct fio_file *f, int flags); |
| 196 | extern int __must_check pre_read_files(struct thread_data *); |
| 197 | extern unsigned long long get_rand_file_size(struct thread_data *td); |
| 198 | extern int add_file(struct thread_data *, const char *, int, int); |
| 199 | extern int add_file_exclusive(struct thread_data *, const char *); |
| 200 | extern void get_file(struct fio_file *); |
| 201 | extern int __must_check put_file(struct thread_data *, struct fio_file *); |
| 202 | extern void put_file_log(struct thread_data *, struct fio_file *); |
| 203 | extern void lock_file(struct thread_data *, struct fio_file *, enum fio_ddir); |
| 204 | extern void unlock_file(struct thread_data *, struct fio_file *); |
| 205 | extern void unlock_file_all(struct thread_data *, struct fio_file *); |
| 206 | extern int add_dir_files(struct thread_data *, const char *); |
| 207 | extern int init_random_map(struct thread_data *); |
| 208 | extern void dup_files(struct thread_data *, struct thread_data *); |
| 209 | extern int get_fileno(struct thread_data *, const char *); |
| 210 | extern void free_release_files(struct thread_data *); |
| 211 | extern void filesetup_mem_free(void); |
| 212 | extern void fio_file_reset(struct thread_data *, struct fio_file *); |
| 213 | extern bool fio_files_done(struct thread_data *); |
| 214 | extern bool exists_and_not_regfile(const char *); |
| 215 | |
| 216 | #endif |