5 #include "compiler/compiler.h"
11 #include "lib/gauss.h"
14 * The type of object we are working on
17 FIO_TYPE_FILE = 1, /* plain file */
18 FIO_TYPE_BD, /* block device */
19 FIO_TYPE_CHAR, /* character device */
20 FIO_TYPE_PIPE, /* pipe */
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 */
42 * roundrobin available files, or choose one at random, or do each one
46 FIO_FSERVICE_RANDOM = 1,
52 * No pre-allocation when laying down files, or call posix_fallocate(), or
53 * call fallocate() with FALLOC_FL_KEEP_SIZE set.
55 enum fio_fallocate_mode {
56 FIO_FALLOCATE_NONE = 1,
57 FIO_FALLOCATE_POSIX = 2,
58 FIO_FALLOCATE_KEEP_SIZE = 3,
62 * Each thread_data structure has a number of files associated with it,
63 * this structure holds state information for a single file.
66 struct flist_head hash_list;
67 enum fio_filetype filetype;
77 * filename and possible memory mapping
79 unsigned int major, minor;
85 * size of the file, offset into file, and io size from that offset
87 uint64_t real_file_size;
92 * Track last end and last start of IO for a given data direction
94 uint64_t last_pos[DDIR_RWDIR_CNT];
95 uint64_t last_start[DDIR_RWDIR_CNT];
101 * For use by the io engine
103 uint64_t engine_data;
106 * if io is protected by a semaphore, this is set
109 struct fio_mutex *lock;
110 struct fio_rwlock *rwlock;
114 * block map or LFSR for random io
117 struct axmap *io_axmap;
118 struct fio_lfsr lfsr;
122 * Used for zipf random distribution
125 struct zipf_state zipf;
126 struct gauss_state gauss;
130 enum fio_file_flags flags;
132 struct disk_util *du;
135 #define FILE_ENG_DATA(f) ((void *) (uintptr_t) (f)->engine_data)
136 #define FILE_SET_ENG_DATA(f, data) \
137 ((f)->engine_data = (uintptr_t) (data))
140 struct flist_head list;
144 #define FILE_FLAG_FNS(name) \
145 static inline void fio_file_set_##name(struct fio_file *f) \
147 (f)->flags = (enum fio_file_flags) ((f)->flags | FIO_FILE_##name); \
149 static inline void fio_file_clear_##name(struct fio_file *f) \
151 (f)->flags = (enum fio_file_flags) ((f)->flags & ~FIO_FILE_##name); \
153 static inline int fio_file_##name(struct fio_file *f) \
155 return ((f)->flags & FIO_FILE_##name) != 0; \
159 FILE_FLAG_FNS(closing);
160 FILE_FLAG_FNS(extend);
162 FILE_FLAG_FNS(size_known);
163 FILE_FLAG_FNS(hashed);
164 FILE_FLAG_FNS(partial_mmap);
165 FILE_FLAG_FNS(axmap);
170 * File setup/shutdown
173 extern void close_files(struct thread_data *);
174 extern void close_and_free_files(struct thread_data *);
175 extern uint64_t get_start_offset(struct thread_data *, struct fio_file *);
176 extern int __must_check setup_files(struct thread_data *);
177 extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *);
178 extern int __must_check generic_open_file(struct thread_data *, struct fio_file *);
179 extern int __must_check generic_close_file(struct thread_data *, struct fio_file *);
180 extern int __must_check generic_get_file_size(struct thread_data *, struct fio_file *);
181 extern int __must_check file_lookup_open(struct fio_file *f, int flags);
182 extern int __must_check pre_read_files(struct thread_data *);
183 extern int add_file(struct thread_data *, const char *, int, int);
184 extern int add_file_exclusive(struct thread_data *, const char *);
185 extern void get_file(struct fio_file *);
186 extern int __must_check put_file(struct thread_data *, struct fio_file *);
187 extern void put_file_log(struct thread_data *, struct fio_file *);
188 extern void lock_file(struct thread_data *, struct fio_file *, enum fio_ddir);
189 extern void unlock_file(struct thread_data *, struct fio_file *);
190 extern void unlock_file_all(struct thread_data *, struct fio_file *);
191 extern int add_dir_files(struct thread_data *, const char *);
192 extern int init_random_map(struct thread_data *);
193 extern void dup_files(struct thread_data *, struct thread_data *);
194 extern int get_fileno(struct thread_data *, const char *);
195 extern void free_release_files(struct thread_data *);
196 extern void filesetup_mem_free(void);
197 void fio_file_reset(struct thread_data *, struct fio_file *);
198 int fio_files_done(struct thread_data *);