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,
20 #ifdef FIO_HAVE_LIBAIO
23 #ifdef FIO_HAVE_POSIXAIO
32 #ifdef FIO_HAVE_SOLARISAIO
37 struct timeval start_time;
38 struct timeval issue_time;
41 * Allocated/set buffer and length
45 unsigned long long offset;
48 * IO engine state, may be different from above when we get
49 * partial transfers / residual data counts
52 unsigned long xfer_buflen;
55 * Parameter related to pre-filled buffers and
56 * their size to handle variable block sizes.
58 unsigned long buf_filled_len;
66 * io engine private data
76 struct fio_file *file;
78 struct flist_head list;
81 * Callback for io completion
83 int (*end_io)(struct thread_data *, struct io_u *);
87 * io_ops->queue() return values
90 FIO_Q_COMPLETED = 0, /* completed sync */
91 FIO_Q_QUEUED = 1, /* queued, will complete async */
92 FIO_Q_BUSY = 2, /* no more room, call ->commit() */
96 struct flist_head list;
100 int (*setup)(struct thread_data *);
101 int (*init)(struct thread_data *);
102 int (*prep)(struct thread_data *, struct io_u *);
103 int (*queue)(struct thread_data *, struct io_u *);
104 int (*commit)(struct thread_data *);
105 int (*getevents)(struct thread_data *, unsigned int, unsigned int, struct timespec *);
106 struct io_u *(*event)(struct thread_data *, int);
107 int (*cancel)(struct thread_data *, struct io_u *);
108 void (*cleanup)(struct thread_data *);
109 int (*open_file)(struct thread_data *, struct fio_file *);
110 int (*close_file)(struct thread_data *, struct fio_file *);
111 int (*get_file_size)(struct thread_data *, struct fio_file *);
116 enum fio_ioengine_flags {
117 FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
118 FIO_RAWIO = 1 << 1, /* some sort of direct/raw io */
119 FIO_DISKLESSIO = 1 << 2, /* no disk involved */
120 FIO_NOEXTEND = 1 << 3, /* engine can't extend file */
121 FIO_NODISKUTIL = 1 << 4, /* diskutil can't handle filename */
122 FIO_UNIDIR = 1 << 5, /* engine is uni-directional */
123 FIO_NOIO = 1 << 6, /* thread does only pseudo IO */
124 FIO_SIGQUIT = 1 << 7, /* needs SIGQUIT to exit */
125 FIO_PIPEIO = 1 << 8, /* input/output no seekable */
129 * io engine entry points
131 extern int __must_check td_io_init(struct thread_data *);
132 extern int __must_check td_io_prep(struct thread_data *, struct io_u *);
133 extern int __must_check td_io_queue(struct thread_data *, struct io_u *);
134 extern int __must_check td_io_sync(struct thread_data *, struct fio_file *);
135 extern int __must_check td_io_getevents(struct thread_data *, unsigned int, unsigned int, struct timespec *);
136 extern int __must_check td_io_commit(struct thread_data *);
137 extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *);
138 extern int td_io_close_file(struct thread_data *, struct fio_file *);
139 extern int __must_check td_io_get_file_size(struct thread_data *, struct fio_file *);
141 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
142 extern void register_ioengine(struct ioengine_ops *);
143 extern void unregister_ioengine(struct ioengine_ops *);
144 extern void close_ioengine(struct thread_data *);
149 #define queue_full(td) flist_empty(&(td)->io_u_freelist)
150 extern struct io_u *__get_io_u(struct thread_data *);
151 extern struct io_u *get_io_u(struct thread_data *);
152 extern void put_io_u(struct thread_data *, struct io_u *);
153 extern void clear_io_u(struct thread_data *, struct io_u *);
154 extern void requeue_io_u(struct thread_data *, struct io_u **);
155 extern int __must_check io_u_sync_complete(struct thread_data *, struct io_u *, unsigned long *);
156 extern int __must_check io_u_queued_complete(struct thread_data *, int, unsigned long *);
157 extern void io_u_queued(struct thread_data *, struct io_u *);
158 extern void io_u_log_error(struct thread_data *, struct io_u *);
159 extern void io_u_mark_depth(struct thread_data *, unsigned int);
160 extern void io_u_fill_buffer(struct thread_data *td, struct io_u *, unsigned int);
161 void io_u_mark_complete(struct thread_data *, unsigned int);
162 void io_u_mark_submit(struct thread_data *, unsigned int);
164 int do_io_u_sync(struct thread_data *, struct io_u *);
165 int do_io_u_trim(struct thread_data *, struct io_u *);
168 static inline void dprint_io_u(struct io_u *io_u, const char *p)
170 struct fio_file *f = io_u->file;
172 dprint(FD_IO, "%s: io_u %p: off=%llu/len=%lu/ddir=%d", p, io_u,
173 (unsigned long long) io_u->offset,
174 io_u->buflen, io_u->ddir);
175 if (fio_debug & (1 << FD_IO)) {
177 log_info("/%s", f->file_name);
183 #define dprint_io_u(io_u, p)