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Merge branch 'arm-detect-pmull' of https://github.com/sitsofe/fio
[fio.git] / file.h
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CommitLineData
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/* Forward declarations */
14struct zoned_block_device_info;
15
16/*
17 * The type of object we are working on
18 */
19enum fio_filetype {
20 FIO_TYPE_FILE = 1, /* plain file */
21 FIO_TYPE_BLOCK, /* block device */
22 FIO_TYPE_CHAR, /* character device */
23 FIO_TYPE_PIPE, /* pipe */
24};
25
26enum fio_file_flags {
27 FIO_FILE_open = 1 << 0, /* file is open */
28 FIO_FILE_closing = 1 << 1, /* file being closed */
29 FIO_FILE_extend = 1 << 2, /* needs extend */
30 FIO_FILE_done = 1 << 3, /* io completed to this file */
31 FIO_FILE_size_known = 1 << 4, /* size has been set */
32 FIO_FILE_hashed = 1 << 5, /* file is on hash */
33 FIO_FILE_partial_mmap = 1 << 6, /* can't do full mmap */
34 FIO_FILE_axmap = 1 << 7, /* uses axmap */
35 FIO_FILE_lfsr = 1 << 8, /* lfsr is used */
36 FIO_FILE_smalloc = 1 << 9, /* smalloc file/file_name */
37};
38
39enum file_lock_mode {
40 FILE_LOCK_NONE,
41 FILE_LOCK_EXCLUSIVE,
42 FILE_LOCK_READWRITE,
43};
44
45/*
46 * How fio chooses what file to service next. Choice of uniformly random, or
47 * some skewed random variants, or just sequentially go through them or
48 * roundrobing.
49 */
50enum {
51 FIO_FSERVICE_RANDOM = 1,
52 FIO_FSERVICE_RR = 2,
53 FIO_FSERVICE_SEQ = 3,
54 __FIO_FSERVICE_NONUNIFORM = 0x100,
55 FIO_FSERVICE_ZIPF = __FIO_FSERVICE_NONUNIFORM | 4,
56 FIO_FSERVICE_PARETO = __FIO_FSERVICE_NONUNIFORM | 5,
57 FIO_FSERVICE_GAUSS = __FIO_FSERVICE_NONUNIFORM | 6,
58
59 FIO_FSERVICE_SHIFT = 10,
60};
61
62/*
63 * No pre-allocation when laying down files, or call posix_fallocate(), or
64 * call fallocate() with FALLOC_FL_KEEP_SIZE set.
65 */
66enum fio_fallocate_mode {
67 FIO_FALLOCATE_NONE = 1,
68 FIO_FALLOCATE_POSIX = 2,
69 FIO_FALLOCATE_KEEP_SIZE = 3,
70 FIO_FALLOCATE_NATIVE = 4,
71 FIO_FALLOCATE_TRUNCATE = 5,
72};
73
74/*
75 * Each thread_data structure has a number of files associated with it,
76 * this structure holds state information for a single file.
77 */
78struct fio_file {
79 struct flist_head hash_list;
80 enum fio_filetype filetype;
81
82 int fd;
83 int shadow_fd;
84#ifdef WIN32
85 HANDLE hFile;
86 HANDLE ioCP;
87#endif
88
89 /*
90 * filename and possible memory mapping
91 */
92 unsigned int major, minor;
93 int fileno;
94 char *file_name;
95
96 /*
97 * size of the file, offset into file, and io size from that offset
98 * (be aware io_size is different from thread_options::io_size)
99 */
100 uint64_t real_file_size;
101 uint64_t file_offset;
102 uint64_t io_size;
103
104 /*
105 * Zoned block device information. See also zonemode=zbd.
106 */
107 struct zoned_block_device_info *zbd_info;
108 /* zonemode=zbd working area */
109 uint32_t min_zone; /* inclusive */
110 uint32_t max_zone; /* exclusive */
111
112 /*
113 * Track last end and last start of IO for a given data direction
114 */
115 uint64_t last_pos[DDIR_RWDIR_CNT];
116 uint64_t last_start[DDIR_RWDIR_CNT];
117
118 uint64_t first_write;
119 uint64_t last_write;
120
121 /*
122 * Tracks the last iodepth number of completed writes, if data
123 * verification is enabled
124 */
125 uint64_t *last_write_comp;
126 unsigned int last_write_idx;
127
128 /*
129 * For use by the io engine for offset or private data storage
130 */
131 union {
132 uint64_t engine_pos;
133 void *engine_data;
134 };
135
136 /*
137 * if io is protected by a semaphore, this is set
138 */
139 union {
140 struct fio_sem *lock;
141 struct fio_rwlock *rwlock;
142 };
143
144 /*
145 * block map or LFSR for random io
146 */
147 union {
148 struct axmap *io_axmap;
149 struct fio_lfsr lfsr;
150 };
151
152 /*
153 * Used for zipf random distribution
154 */
155 union {
156 struct zipf_state zipf;
157 struct gauss_state gauss;
158 };
159
160 int references;
161 enum fio_file_flags flags;
162
163 struct disk_util *du;
164};
165
166#define FILE_ENG_DATA(f) ((f)->engine_data)
167#define FILE_SET_ENG_DATA(f, data) ((f)->engine_data = (data))
168
169#define FILE_FLAG_FNS(name) \
170static inline void fio_file_set_##name(struct fio_file *f) \
171{ \
172 (f)->flags = (enum fio_file_flags) ((f)->flags | FIO_FILE_##name); \
173} \
174static inline void fio_file_clear_##name(struct fio_file *f) \
175{ \
176 (f)->flags = (enum fio_file_flags) ((f)->flags & ~FIO_FILE_##name); \
177} \
178static inline int fio_file_##name(struct fio_file *f) \
179{ \
180 return ((f)->flags & FIO_FILE_##name) != 0; \
181}
182
183FILE_FLAG_FNS(open);
184FILE_FLAG_FNS(closing);
185FILE_FLAG_FNS(extend);
186FILE_FLAG_FNS(done);
187FILE_FLAG_FNS(size_known);
188FILE_FLAG_FNS(hashed);
189FILE_FLAG_FNS(partial_mmap);
190FILE_FLAG_FNS(axmap);
191FILE_FLAG_FNS(lfsr);
192FILE_FLAG_FNS(smalloc);
193#undef FILE_FLAG_FNS
194
195/*
196 * File setup/shutdown
197 */
198struct thread_data;
199extern void close_files(struct thread_data *);
200extern void close_and_free_files(struct thread_data *);
201extern uint64_t get_start_offset(struct thread_data *, struct fio_file *);
202extern int __must_check setup_files(struct thread_data *);
203extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *);
204#ifdef __cplusplus
205extern "C" {
206#endif
207extern int __must_check generic_open_file(struct thread_data *, struct fio_file *);
208extern int __must_check generic_close_file(struct thread_data *, struct fio_file *);
209extern int __must_check generic_get_file_size(struct thread_data *, struct fio_file *);
210extern int __must_check generic_prepopulate_file(struct thread_data *, struct fio_file *);
211#ifdef __cplusplus
212}
213#endif
214extern int __must_check file_lookup_open(struct fio_file *f, int flags);
215extern bool __must_check pre_read_files(struct thread_data *);
216extern unsigned long long get_rand_file_size(struct thread_data *td);
217extern int add_file(struct thread_data *, const char *, int, int);
218extern int add_file_exclusive(struct thread_data *, const char *);
219extern void get_file(struct fio_file *);
220extern int __must_check put_file(struct thread_data *, struct fio_file *);
221extern void put_file_log(struct thread_data *, struct fio_file *);
222extern void lock_file(struct thread_data *, struct fio_file *, enum fio_ddir);
223extern void unlock_file(struct thread_data *, struct fio_file *);
224extern void unlock_file_all(struct thread_data *, struct fio_file *);
225extern int add_dir_files(struct thread_data *, const char *);
226extern bool init_random_map(struct thread_data *);
227extern void dup_files(struct thread_data *, struct thread_data *);
228extern int get_fileno(struct thread_data *, const char *);
229extern void free_release_files(struct thread_data *);
230extern void filesetup_mem_free(void);
231extern void fio_file_reset(struct thread_data *, struct fio_file *);
232extern bool fio_files_done(struct thread_data *);
233extern bool exists_and_not_regfile(const char *);
234extern int fio_set_directio(struct thread_data *, struct fio_file *);
235extern void fio_file_free(struct fio_file *);
236
237#endif
fio - Flexible IO Tester