| 1 | #ifndef FIO_FILE_H |
| 2 | #define FIO_FILE_H |
| 3 | |
| 4 | #include "io_ddir.h" |
| 5 | |
| 6 | /* |
| 7 | * The type of object we are working on |
| 8 | */ |
| 9 | enum fio_filetype { |
| 10 | FIO_TYPE_FILE = 1, /* plain file */ |
| 11 | FIO_TYPE_BD, /* block device */ |
| 12 | FIO_TYPE_CHAR, /* character device */ |
| 13 | FIO_TYPE_PIPE, /* pipe */ |
| 14 | }; |
| 15 | |
| 16 | enum fio_file_flags { |
| 17 | FIO_FILE_open = 1 << 0, /* file is open */ |
| 18 | FIO_FILE_closing = 1 << 1, /* file being closed */ |
| 19 | FIO_FILE_extend = 1 << 2, /* needs extend */ |
| 20 | FIO_FILE_done = 1 << 3, /* io completed to this file */ |
| 21 | FIO_FILE_size_known = 1 << 4, /* size has been set */ |
| 22 | FIO_FILE_hashed = 1 << 5, /* file is on hash */ |
| 23 | }; |
| 24 | |
| 25 | enum file_lock_mode { |
| 26 | FILE_LOCK_NONE, |
| 27 | FILE_LOCK_EXCLUSIVE, |
| 28 | FILE_LOCK_READWRITE, |
| 29 | }; |
| 30 | |
| 31 | /* |
| 32 | * roundrobin available files, or choose one at random, or do each one |
| 33 | * serially. |
| 34 | */ |
| 35 | enum { |
| 36 | FIO_FSERVICE_RANDOM = 1, |
| 37 | FIO_FSERVICE_RR = 2, |
| 38 | FIO_FSERVICE_SEQ = 3, |
| 39 | }; |
| 40 | |
| 41 | /* |
| 42 | * Each thread_data structure has a number of files associated with it, |
| 43 | * this structure holds state information for a single file. |
| 44 | */ |
| 45 | struct fio_file { |
| 46 | struct flist_head hash_list; |
| 47 | enum fio_filetype filetype; |
| 48 | |
| 49 | /* |
| 50 | * A file may not be a file descriptor, let the io engine decide |
| 51 | */ |
| 52 | union { |
| 53 | unsigned long file_data; |
| 54 | int fd; |
| 55 | }; |
| 56 | |
| 57 | /* |
| 58 | * filename and possible memory mapping |
| 59 | */ |
| 60 | char *file_name; |
| 61 | unsigned int major, minor; |
| 62 | |
| 63 | void *mmap_ptr; |
| 64 | size_t mmap_sz; |
| 65 | off_t mmap_off; |
| 66 | |
| 67 | /* |
| 68 | * size of the file, offset into file, and io size from that offset |
| 69 | */ |
| 70 | unsigned long long real_file_size; |
| 71 | unsigned long long file_offset; |
| 72 | unsigned long long io_size; |
| 73 | |
| 74 | unsigned long long last_pos; |
| 75 | |
| 76 | /* |
| 77 | * if io is protected by a semaphore, this is set |
| 78 | */ |
| 79 | struct fio_mutex *lock; |
| 80 | void *lock_owner; |
| 81 | unsigned int lock_batch; |
| 82 | enum fio_ddir lock_ddir; |
| 83 | |
| 84 | /* |
| 85 | * block map for random io |
| 86 | */ |
| 87 | unsigned int *file_map; |
| 88 | unsigned int num_maps; |
| 89 | unsigned int last_free_lookup; |
| 90 | |
| 91 | int references; |
| 92 | enum fio_file_flags flags; |
| 93 | |
| 94 | struct disk_util *du; |
| 95 | }; |
| 96 | |
| 97 | #define FILE_FLAG_FNS(name) \ |
| 98 | static inline void fio_file_set_##name(struct fio_file *f) \ |
| 99 | { \ |
| 100 | (f)->flags |= FIO_FILE_##name; \ |
| 101 | } \ |
| 102 | static inline void fio_file_clear_##name(struct fio_file *f) \ |
| 103 | { \ |
| 104 | (f)->flags &= ~FIO_FILE_##name; \ |
| 105 | } \ |
| 106 | static inline int fio_file_##name(struct fio_file *f) \ |
| 107 | { \ |
| 108 | return ((f)->flags & FIO_FILE_##name) != 0; \ |
| 109 | } |
| 110 | |
| 111 | FILE_FLAG_FNS(open); |
| 112 | FILE_FLAG_FNS(closing); |
| 113 | FILE_FLAG_FNS(extend); |
| 114 | FILE_FLAG_FNS(done); |
| 115 | FILE_FLAG_FNS(size_known); |
| 116 | FILE_FLAG_FNS(hashed); |
| 117 | #undef FILE_FLAG_FNS |
| 118 | |
| 119 | /* |
| 120 | * File setup/shutdown |
| 121 | */ |
| 122 | struct thread_data; |
| 123 | extern void close_files(struct thread_data *); |
| 124 | extern void close_and_free_files(struct thread_data *); |
| 125 | extern int __must_check setup_files(struct thread_data *); |
| 126 | extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *); |
| 127 | extern int __must_check generic_open_file(struct thread_data *, struct fio_file *); |
| 128 | extern int __must_check generic_close_file(struct thread_data *, struct fio_file *); |
| 129 | extern int __must_check generic_get_file_size(struct thread_data *, struct fio_file *); |
| 130 | extern int __must_check pre_read_files(struct thread_data *); |
| 131 | extern int add_file(struct thread_data *, const char *); |
| 132 | extern void get_file(struct fio_file *); |
| 133 | extern int __must_check put_file(struct thread_data *, struct fio_file *); |
| 134 | extern void lock_file(struct thread_data *, struct fio_file *, enum fio_ddir); |
| 135 | extern void unlock_file(struct thread_data *, struct fio_file *); |
| 136 | extern void unlock_file_all(struct thread_data *, struct fio_file *); |
| 137 | extern int add_dir_files(struct thread_data *, const char *); |
| 138 | extern int init_random_map(struct thread_data *); |
| 139 | extern void dup_files(struct thread_data *, struct thread_data *); |
| 140 | extern int get_fileno(struct thread_data *, const char *); |
| 141 | extern void free_release_files(struct thread_data *); |
| 142 | |
| 143 | static inline void fio_file_reset(struct fio_file *f) |
| 144 | { |
| 145 | f->last_free_lookup = 0; |
| 146 | f->last_pos = f->file_offset; |
| 147 | if (f->file_map) |
| 148 | memset(f->file_map, 0, f->num_maps * sizeof(int)); |
| 149 | } |
| 150 | |
| 151 | #endif |