4 #define FIO_IOOPS_VERSION 12
8 IO_U_F_FLIGHT = 1 << 1,
9 IO_U_F_FREE_DEF = 1 << 2,
10 IO_U_F_IN_CUR_DEPTH = 1 << 3,
11 IO_U_F_BUSY_OK = 1 << 4,
12 IO_U_F_TRIMMED = 1 << 5,
13 IO_U_F_BARRIER = 1 << 6,
21 #ifdef FIO_HAVE_LIBAIO
24 #ifdef FIO_HAVE_POSIXAIO
33 #ifdef FIO_HAVE_SOLARISAIO
36 #ifdef FIO_HAVE_BINJECT
37 struct b_user_cmd buc;
41 struct timeval start_time;
42 struct timeval issue_time;
45 * Allocated/set buffer and length
49 unsigned long long offset;
52 * Initial seed for generating the buffer contents
54 unsigned long rand_seed;
57 * IO engine state, may be different from above when we get
58 * partial transfers / residual data counts
61 unsigned long xfer_buflen;
64 * Parameter related to pre-filled buffers and
65 * their size to handle variable block sizes.
67 unsigned long buf_filled_len;
75 * io engine private data
85 struct fio_file *file;
87 struct flist_head list;
90 * Callback for io completion
92 int (*end_io)(struct thread_data *, struct io_u *);
96 * io_ops->queue() return values
99 FIO_Q_COMPLETED = 0, /* completed sync */
100 FIO_Q_QUEUED = 1, /* queued, will complete async */
101 FIO_Q_BUSY = 2, /* no more room, call ->commit() */
104 struct ioengine_ops {
105 struct flist_head list;
109 int (*setup)(struct thread_data *);
110 int (*init)(struct thread_data *);
111 int (*prep)(struct thread_data *, struct io_u *);
112 int (*queue)(struct thread_data *, struct io_u *);
113 int (*commit)(struct thread_data *);
114 int (*getevents)(struct thread_data *, unsigned int, unsigned int, struct timespec *);
115 struct io_u *(*event)(struct thread_data *, int);
116 int (*cancel)(struct thread_data *, struct io_u *);
117 void (*cleanup)(struct thread_data *);
118 int (*open_file)(struct thread_data *, struct fio_file *);
119 int (*close_file)(struct thread_data *, struct fio_file *);
120 int (*get_file_size)(struct thread_data *, struct fio_file *);
125 enum fio_ioengine_flags {
126 FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
127 FIO_RAWIO = 1 << 1, /* some sort of direct/raw io */
128 FIO_DISKLESSIO = 1 << 2, /* no disk involved */
129 FIO_NOEXTEND = 1 << 3, /* engine can't extend file */
130 FIO_NODISKUTIL = 1 << 4, /* diskutil can't handle filename */
131 FIO_UNIDIR = 1 << 5, /* engine is uni-directional */
132 FIO_NOIO = 1 << 6, /* thread does only pseudo IO */
133 FIO_SIGTERM = 1 << 7, /* needs SIGTERM to exit */
134 FIO_PIPEIO = 1 << 8, /* input/output no seekable */
135 FIO_BARRIER = 1 << 9, /* engine supports barriers */
136 FIO_MEMALIGN = 1 << 10, /* engine wants aligned memory */
140 * io engine entry points
142 extern int __must_check td_io_init(struct thread_data *);
143 extern int __must_check td_io_prep(struct thread_data *, struct io_u *);
144 extern int __must_check td_io_queue(struct thread_data *, struct io_u *);
145 extern int __must_check td_io_sync(struct thread_data *, struct fio_file *);
146 extern int __must_check td_io_getevents(struct thread_data *, unsigned int, unsigned int, struct timespec *);
147 extern int __must_check td_io_commit(struct thread_data *);
148 extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *);
149 extern int td_io_close_file(struct thread_data *, struct fio_file *);
150 extern int __must_check td_io_get_file_size(struct thread_data *, struct fio_file *);
152 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
153 extern void register_ioengine(struct ioengine_ops *);
154 extern void unregister_ioengine(struct ioengine_ops *);
155 extern void close_ioengine(struct thread_data *);
160 #define queue_full(td) flist_empty(&(td)->io_u_freelist)
161 extern struct io_u *__get_io_u(struct thread_data *);
162 extern struct io_u *get_io_u(struct thread_data *);
163 extern void put_io_u(struct thread_data *, struct io_u *);
164 extern void clear_io_u(struct thread_data *, struct io_u *);
165 extern void requeue_io_u(struct thread_data *, struct io_u **);
166 extern int __must_check io_u_sync_complete(struct thread_data *, struct io_u *, unsigned long *);
167 extern int __must_check io_u_queued_complete(struct thread_data *, int, unsigned long *);
168 extern void io_u_queued(struct thread_data *, struct io_u *);
169 extern void io_u_log_error(struct thread_data *, struct io_u *);
170 extern void io_u_mark_depth(struct thread_data *, unsigned int);
171 extern void io_u_fill_buffer(struct thread_data *td, struct io_u *, unsigned int);
172 void io_u_mark_complete(struct thread_data *, unsigned int);
173 void io_u_mark_submit(struct thread_data *, unsigned int);
175 int do_io_u_sync(struct thread_data *, struct io_u *);
176 int do_io_u_trim(struct thread_data *, struct io_u *);
179 static inline void dprint_io_u(struct io_u *io_u, const char *p)
181 struct fio_file *f = io_u->file;
183 dprint(FD_IO, "%s: io_u %p: off=%llu/len=%lu/ddir=%d", p, io_u,
184 (unsigned long long) io_u->offset,
185 io_u->buflen, io_u->ddir);
186 if (fio_debug & (1 << FD_IO)) {
188 log_info("/%s", f->file_name);
194 #define dprint_io_u(io_u, p)