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gettime: make utime_since_now and mtime_since_now consistent in how they record the...
[fio.git] / file.h
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d6aed795
JA		 1#ifndef FIO_FILE_H
2#define FIO_FILE_H
3
e2e58886 4#include <string.h>
ecc314ba 5#include "compiler/compiler.h"
d6aed795 6#include "io_ddir.h"
ecc314ba 7#include "flist.h"
9c6f6316 8#include "lib/zipf.h"
7ebd796f 9#include "lib/axmap.h"
8055e41d 10#include "lib/lfsr.h"
56d9fa4b 11#include "lib/gauss.h"
d6aed795
JA		 12
13/*
14 * The type of object we are working on
15 */
16enum fio_filetype {
17 FIO_TYPE_FILE = 1, /* plain file */
686fbd31 18 FIO_TYPE_BLOCK, /* block device */
d6aed795
JA		 19 FIO_TYPE_CHAR, /* character device */
20 FIO_TYPE_PIPE, /* pipe */
21};
22
23enum 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 */
ed47cbf7 30 FIO_FILE_partial_mmap = 1 << 6, /* can't do full mmap */
967d1b63
JA		 31 FIO_FILE_axmap = 1 << 7, /* uses axmap */
32 FIO_FILE_lfsr = 1 << 8, /* lfsr is used */
d6aed795
JA		 33};
34
35enum file_lock_mode {
36 FILE_LOCK_NONE,
37 FILE_LOCK_EXCLUSIVE,
38 FILE_LOCK_READWRITE,
39};
40
590aebda 41/*
8c07860d
JA		 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.
590aebda
JA		 45 */
46enum {
8c07860d
JA		 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,
590aebda
JA		 56};
57
a596f047
EG		 58/*
59 * No pre-allocation when laying down files, or call posix_fallocate(), or
60 * call fallocate() with FALLOC_FL_KEEP_SIZE set.
61 */
62enum fio_fallocate_mode {
63 FIO_FALLOCATE_NONE = 1,
64 FIO_FALLOCATE_POSIX = 2,
65 FIO_FALLOCATE_KEEP_SIZE = 3,
66};
67
d6aed795
JA		 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 */
72struct fio_file {
73 struct flist_head hash_list;
74 enum fio_filetype filetype;
75
0e238572 76 int fd;
e6c4d732 77 int shadow_fd;
93bcfd20 78#ifdef WIN32
03e20d68
BC		 79 HANDLE hFile;
80 HANDLE ioCP;
81#endif
d6aed795
JA		 82
83 /*
84 * filename and possible memory mapping
85 */
d6aed795 86 unsigned int major, minor;
89ac1d48 87 int fileno;
26e616d0 88 int bs;
d8f1f7d4 89 char *file_name;
d6aed795 90
d6aed795
JA		 91 /*
92 * size of the file, offset into file, and io size from that offset
79591fa9 93 * (be aware io_size is different from thread_options::io_size)
d6aed795 94 */
293b8c1f
JA		 95 uint64_t real_file_size;
96 uint64_t file_offset;
97 uint64_t io_size;
d6aed795 98
f1dfb668
JA		 99 /*
100 * Track last end and last start of IO for a given data direction
101 */
102 uint64_t last_pos[DDIR_RWDIR_CNT];
103 uint64_t last_start[DDIR_RWDIR_CNT];
d6aed795 104
293b8c1f
JA		 105 uint64_t first_write;
106 uint64_t last_write;
44f29692 107
94a6e1bb
JA		 108 /*
109 * Tracks the last iodepth number of completed writes, if data
110 * verification is enabled
111 */
112 uint64_t *last_write_comp;
113 unsigned int last_write_idx;
114
e943b878 115 /*
710bf9c5 116 * For use by the io engine for offset or private data storage
e943b878 117 */
710bf9c5
TK		 118 union {
119 uint64_t engine_pos;
120 void *engine_data;
121 };
e943b878 122
d6aed795
JA		 123 /*
124 * if io is protected by a semaphore, this is set
125 */
d7df1d13
JA		 126 union {
127 struct fio_mutex *lock;
128 struct fio_rwlock *rwlock;
129 };
d6aed795
JA		 130
131 /*
967d1b63 132 * block map or LFSR for random io
d6aed795 133 */
967d1b63
JA		 134 union {
135 struct axmap *io_axmap;
136 struct fio_lfsr lfsr;
137 };
8055e41d 138
9c6f6316
JA		 139 /*
140 * Used for zipf random distribution
141 */
56d9fa4b
JA		 142 union {
143 struct zipf_state zipf;
144 struct gauss_state gauss;
145 };
9c6f6316 146
d6aed795
JA		 147 int references;
148 enum fio_file_flags flags;
149
150 struct disk_util *du;
151};
152
710bf9c5
TK		 153#define FILE_ENG_DATA(f) ((f)->engine_data)
154#define FILE_SET_ENG_DATA(f, data) ((f)->engine_data = (data))
e19ccb55 155
d6aed795
JA		 156#define FILE_FLAG_FNS(name) \
157static inline void fio_file_set_##name(struct fio_file *f) \
158{ \
bea5c23d 159 (f)->flags = (enum fio_file_flags) ((f)->flags | FIO_FILE_##name); \
d6aed795
JA		 160} \
161static inline void fio_file_clear_##name(struct fio_file *f) \
162{ \
bea5c23d 163 (f)->flags = (enum fio_file_flags) ((f)->flags & ~FIO_FILE_##name); \
d6aed795
JA		 164} \
165static inline int fio_file_##name(struct fio_file *f) \
166{ \
167 return ((f)->flags & FIO_FILE_##name) != 0; \
168}
169
170FILE_FLAG_FNS(open);
171FILE_FLAG_FNS(closing);
172FILE_FLAG_FNS(extend);
173FILE_FLAG_FNS(done);
174FILE_FLAG_FNS(size_known);
175FILE_FLAG_FNS(hashed);
ed47cbf7 176FILE_FLAG_FNS(partial_mmap);
967d1b63
JA		 177FILE_FLAG_FNS(axmap);
178FILE_FLAG_FNS(lfsr);
d6aed795
JA		 179#undef FILE_FLAG_FNS
180
4cd02b3f
JA		 181/*
182 * File setup/shutdown
183 */
184struct thread_data;
185extern void close_files(struct thread_data *);
186extern void close_and_free_files(struct thread_data *);
bedc9dc2 187extern uint64_t get_start_offset(struct thread_data *, struct fio_file *);
4cd02b3f
JA		 188extern int __must_check setup_files(struct thread_data *);
189extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *);
190extern int __must_check generic_open_file(struct thread_data *, struct fio_file *);
191extern int __must_check generic_close_file(struct thread_data *, struct fio_file *);
192extern int __must_check generic_get_file_size(struct thread_data *, struct fio_file *);
1ccc6dc7 193extern int __must_check file_lookup_open(struct fio_file *f, int flags);
4cd02b3f 194extern int __must_check pre_read_files(struct thread_data *);
a3f001f5 195extern unsigned long long get_rand_file_size(struct thread_data *td);
5903e7b7 196extern int add_file(struct thread_data *, const char *, int, int);
49ffb4a2 197extern int add_file_exclusive(struct thread_data *, const char *);
4cd02b3f
JA		 198extern void get_file(struct fio_file *);
199extern int __must_check put_file(struct thread_data *, struct fio_file *);
e8462bd8 200extern void put_file_log(struct thread_data *, struct fio_file *);
4cd02b3f
JA		 201extern void lock_file(struct thread_data *, struct fio_file *, enum fio_ddir);
202extern void unlock_file(struct thread_data *, struct fio_file *);
203extern void unlock_file_all(struct thread_data *, struct fio_file *);
204extern int add_dir_files(struct thread_data *, const char *);
205extern int init_random_map(struct thread_data *);
206extern void dup_files(struct thread_data *, struct thread_data *);
207extern int get_fileno(struct thread_data *, const char *);
208extern void free_release_files(struct thread_data *);
bcbfeefa 209extern void filesetup_mem_free(void);
8aa89d70 210extern void fio_file_reset(struct thread_data *, struct fio_file *);
747b3105 211extern bool fio_files_done(struct thread_data *);
04d6530f 212extern bool exists_and_not_regfile(const char *);
c592b9fe 213
d6aed795 214#endif
fio - Flexible IO Tester