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d6aed795 JA |
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 */ | |
ed47cbf7 | 23 | FIO_FILE_partial_mmap = 1 << 6, /* can't do full mmap */ |
d6aed795 JA |
24 | }; |
25 | ||
26 | enum file_lock_mode { | |
27 | FILE_LOCK_NONE, | |
28 | FILE_LOCK_EXCLUSIVE, | |
29 | FILE_LOCK_READWRITE, | |
30 | }; | |
31 | ||
590aebda JA |
32 | /* |
33 | * roundrobin available files, or choose one at random, or do each one | |
34 | * serially. | |
35 | */ | |
36 | enum { | |
37 | FIO_FSERVICE_RANDOM = 1, | |
38 | FIO_FSERVICE_RR = 2, | |
39 | FIO_FSERVICE_SEQ = 3, | |
40 | }; | |
41 | ||
d6aed795 JA |
42 | /* |
43 | * Each thread_data structure has a number of files associated with it, | |
44 | * this structure holds state information for a single file. | |
45 | */ | |
46 | struct fio_file { | |
47 | struct flist_head hash_list; | |
48 | enum fio_filetype filetype; | |
49 | ||
50 | /* | |
51 | * A file may not be a file descriptor, let the io engine decide | |
52 | */ | |
53 | union { | |
54 | unsigned long file_data; | |
55 | int fd; | |
56 | }; | |
57 | ||
58 | /* | |
59 | * filename and possible memory mapping | |
60 | */ | |
61 | char *file_name; | |
62 | unsigned int major, minor; | |
63 | ||
64 | void *mmap_ptr; | |
65 | size_t mmap_sz; | |
66 | off_t mmap_off; | |
67 | ||
68 | /* | |
69 | * size of the file, offset into file, and io size from that offset | |
70 | */ | |
71 | unsigned long long real_file_size; | |
72 | unsigned long long file_offset; | |
73 | unsigned long long io_size; | |
74 | ||
75 | unsigned long long last_pos; | |
76 | ||
44f29692 JA |
77 | unsigned long long first_write; |
78 | unsigned long long last_write; | |
79 | ||
e943b878 JA |
80 | /* |
81 | * For use by the io engine | |
82 | */ | |
83 | unsigned long long file_pos; | |
84 | ||
d6aed795 JA |
85 | /* |
86 | * if io is protected by a semaphore, this is set | |
87 | */ | |
88 | struct fio_mutex *lock; | |
89 | void *lock_owner; | |
90 | unsigned int lock_batch; | |
91 | enum fio_ddir lock_ddir; | |
92 | ||
93 | /* | |
94 | * block map for random io | |
95 | */ | |
96 | unsigned int *file_map; | |
97 | unsigned int num_maps; | |
98 | unsigned int last_free_lookup; | |
99 | ||
100 | int references; | |
101 | enum fio_file_flags flags; | |
102 | ||
103 | struct disk_util *du; | |
104 | }; | |
105 | ||
106 | #define FILE_FLAG_FNS(name) \ | |
107 | static inline void fio_file_set_##name(struct fio_file *f) \ | |
108 | { \ | |
109 | (f)->flags |= FIO_FILE_##name; \ | |
110 | } \ | |
111 | static inline void fio_file_clear_##name(struct fio_file *f) \ | |
112 | { \ | |
113 | (f)->flags &= ~FIO_FILE_##name; \ | |
114 | } \ | |
115 | static inline int fio_file_##name(struct fio_file *f) \ | |
116 | { \ | |
117 | return ((f)->flags & FIO_FILE_##name) != 0; \ | |
118 | } | |
119 | ||
120 | FILE_FLAG_FNS(open); | |
121 | FILE_FLAG_FNS(closing); | |
122 | FILE_FLAG_FNS(extend); | |
123 | FILE_FLAG_FNS(done); | |
124 | FILE_FLAG_FNS(size_known); | |
125 | FILE_FLAG_FNS(hashed); | |
ed47cbf7 | 126 | FILE_FLAG_FNS(partial_mmap); |
d6aed795 JA |
127 | #undef FILE_FLAG_FNS |
128 | ||
4cd02b3f JA |
129 | /* |
130 | * File setup/shutdown | |
131 | */ | |
132 | struct thread_data; | |
133 | extern void close_files(struct thread_data *); | |
134 | extern void close_and_free_files(struct thread_data *); | |
135 | extern int __must_check setup_files(struct thread_data *); | |
136 | extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *); | |
137 | extern int __must_check generic_open_file(struct thread_data *, struct fio_file *); | |
138 | extern int __must_check generic_close_file(struct thread_data *, struct fio_file *); | |
139 | extern int __must_check generic_get_file_size(struct thread_data *, struct fio_file *); | |
140 | extern int __must_check pre_read_files(struct thread_data *); | |
141 | extern int add_file(struct thread_data *, const char *); | |
142 | extern void get_file(struct fio_file *); | |
143 | extern int __must_check put_file(struct thread_data *, struct fio_file *); | |
e8462bd8 | 144 | extern void put_file_log(struct thread_data *, struct fio_file *); |
4cd02b3f JA |
145 | extern void lock_file(struct thread_data *, struct fio_file *, enum fio_ddir); |
146 | extern void unlock_file(struct thread_data *, struct fio_file *); | |
147 | extern void unlock_file_all(struct thread_data *, struct fio_file *); | |
148 | extern int add_dir_files(struct thread_data *, const char *); | |
149 | extern int init_random_map(struct thread_data *); | |
150 | extern void dup_files(struct thread_data *, struct thread_data *); | |
151 | extern int get_fileno(struct thread_data *, const char *); | |
152 | extern void free_release_files(struct thread_data *); | |
153 | ||
c592b9fe JA |
154 | static inline void fio_file_reset(struct fio_file *f) |
155 | { | |
156 | f->last_free_lookup = 0; | |
157 | f->last_pos = f->file_offset; | |
e943b878 | 158 | f->file_pos = -1ULL; |
c592b9fe JA |
159 | if (f->file_map) |
160 | memset(f->file_map, 0, f->num_maps * sizeof(int)); | |
161 | } | |
162 | ||
d6aed795 | 163 | #endif |