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