4 #define FIO_IOOPS_VERSION 10
8 IO_U_F_FLIGHT = 1 << 1,
9 IO_U_F_FREE_DEF = 1 << 2,
10 IO_U_F_IN_CUR_DEPTH = 1 << 3,
18 #ifdef FIO_HAVE_LIBAIO
21 #ifdef FIO_HAVE_POSIXAIO
30 #ifdef FIO_HAVE_SOLARISAIO
35 struct timeval start_time;
36 struct timeval issue_time;
39 * Allocated/set buffer and length
43 unsigned long long offset;
46 * IO engine state, may be different from above when we get
47 * partial transfers / residual data counts
50 unsigned long xfer_buflen;
58 * io engine private data
68 struct fio_file *file;
70 struct flist_head list;
73 * Callback for io completion
75 int (*end_io)(struct thread_data *, struct io_u *);
79 * io_ops->queue() return values
82 FIO_Q_COMPLETED = 0, /* completed sync */
83 FIO_Q_QUEUED = 1, /* queued, will complete async */
84 FIO_Q_BUSY = 2, /* no more room, call ->commit() */
88 struct flist_head list;
92 int (*setup)(struct thread_data *);
93 int (*init)(struct thread_data *);
94 int (*prep)(struct thread_data *, struct io_u *);
95 int (*queue)(struct thread_data *, struct io_u *);
96 int (*commit)(struct thread_data *);
97 int (*getevents)(struct thread_data *, unsigned int, unsigned int, struct timespec *);
98 struct io_u *(*event)(struct thread_data *, int);
99 int (*cancel)(struct thread_data *, struct io_u *);
100 void (*cleanup)(struct thread_data *);
101 int (*open_file)(struct thread_data *, struct fio_file *);
102 int (*close_file)(struct thread_data *, struct fio_file *);
103 int (*get_file_size)(struct thread_data *, struct fio_file *);
108 enum fio_ioengine_flags {
109 FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
110 FIO_RAWIO = 1 << 1, /* some sort of direct/raw io */
111 FIO_DISKLESSIO = 1 << 2, /* no disk involved */
112 FIO_NOEXTEND = 1 << 3, /* engine can't extend file */
113 FIO_NODISKUTIL = 1 << 4, /* diskutil can't handle filename */
114 FIO_UNIDIR = 1 << 5, /* engine is uni-directional */
115 FIO_NOIO = 1 << 6, /* thread does only pseudo IO */
116 FIO_SIGQUIT = 1 << 7, /* needs SIGQUIT to exit */
117 FIO_PIPEIO = 1 << 8, /* input/output no seekable */
121 * io engine entry points
123 extern int __must_check td_io_init(struct thread_data *);
124 extern int __must_check td_io_prep(struct thread_data *, struct io_u *);
125 extern int __must_check td_io_queue(struct thread_data *, struct io_u *);
126 extern int __must_check td_io_sync(struct thread_data *, struct fio_file *);
127 extern int __must_check td_io_getevents(struct thread_data *, unsigned int, unsigned int, struct timespec *);
128 extern int __must_check td_io_commit(struct thread_data *);
129 extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *);
130 extern int td_io_close_file(struct thread_data *, struct fio_file *);
131 extern int __must_check td_io_get_file_size(struct thread_data *, struct fio_file *);
133 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
134 extern void register_ioengine(struct ioengine_ops *);
135 extern void unregister_ioengine(struct ioengine_ops *);
136 extern void close_ioengine(struct thread_data *);
141 #define queue_full(td) flist_empty(&(td)->io_u_freelist)
142 extern struct io_u *__get_io_u(struct thread_data *);
143 extern struct io_u *get_io_u(struct thread_data *);
144 extern void put_io_u(struct thread_data *, struct io_u *);
145 extern void clear_io_u(struct thread_data *, struct io_u *);
146 extern void requeue_io_u(struct thread_data *, struct io_u **);
147 extern int __must_check io_u_sync_complete(struct thread_data *, struct io_u *, unsigned long *);
148 extern int __must_check io_u_queued_complete(struct thread_data *, int, unsigned long *);
149 extern void io_u_queued(struct thread_data *, struct io_u *);
150 extern void io_u_log_error(struct thread_data *, struct io_u *);
151 extern void io_u_mark_depth(struct thread_data *, unsigned int);
152 extern void io_u_fill_buffer(struct thread_data *td, struct io_u *, unsigned int);
153 void io_u_mark_complete(struct thread_data *, unsigned int);
154 void io_u_mark_submit(struct thread_data *, unsigned int);
157 static inline void dprint_io_u(struct io_u *io_u, const char *p)
159 struct fio_file *f = io_u->file;
161 dprint(FD_IO, "%s: io_u %p: off=%llu/len=%lu/ddir=%d", p, io_u,
162 (unsigned long long) io_u->offset,
163 io_u->buflen, io_u->ddir);
164 if (fio_debug & (1 << FD_IO)) {
166 log_info("/%s", f->file_name);
172 #define dprint_io_u(io_u, p)