diff options
Diffstat (limited to 'io_u.h')
| -rw-r--r-- | io_u.h | 179 |
1 files changed, 179 insertions, 0 deletions
@@ -0,0 +1,179 @@ +#ifndef FIO_IO_U +#define FIO_IO_U + +#include "compiler/compiler.h" +#include "os/os.h" +#include "log.h" +#include "io_ddir.h" +#include "debug.h" +#include "file.h" +#include "workqueue.h" + +#ifdef CONFIG_LIBAIO +#include <libaio.h> +#endif +#ifdef CONFIG_GUASI +#include <guasi.h> +#endif + +enum { + IO_U_F_FREE = 1 << 0, + IO_U_F_FLIGHT = 1 << 1, + IO_U_F_NO_FILE_PUT = 1 << 2, + IO_U_F_IN_CUR_DEPTH = 1 << 3, + IO_U_F_BUSY_OK = 1 << 4, + IO_U_F_TRIMMED = 1 << 5, + IO_U_F_BARRIER = 1 << 6, + IO_U_F_VER_LIST = 1 << 7, +}; + +/* + * The io unit + */ +struct io_u { + struct timeval start_time; + struct timeval issue_time; + + struct fio_file *file; + unsigned int flags; + enum fio_ddir ddir; + + /* + * For replay workloads, we may want to account as a different + * IO type than what is being submitted. + */ + enum fio_ddir acct_ddir; + + /* + * Write generation + */ + unsigned short numberio; + + /* + * Allocated/set buffer and length + */ + unsigned long buflen; + unsigned long long offset; + void *buf; + + /* + * Initial seed for generating the buffer contents + */ + uint64_t rand_seed; + + /* + * IO engine state, may be different from above when we get + * partial transfers / residual data counts + */ + void *xfer_buf; + unsigned long xfer_buflen; + + /* + * Parameter related to pre-filled buffers and + * their size to handle variable block sizes. + */ + unsigned long buf_filled_len; + + struct io_piece *ipo; + + unsigned int resid; + unsigned int error; + + /* + * io engine private data + */ + union { + unsigned int index; + unsigned int seen; + void *engine_data; + }; + + union { + struct flist_head verify_list; + struct workqueue_work work; + }; + + /* + * Callback for io completion + */ + int (*end_io)(struct thread_data *, struct io_u **); + + union { +#ifdef CONFIG_LIBAIO + struct iocb iocb; +#endif +#ifdef CONFIG_POSIXAIO + os_aiocb_t aiocb; +#endif +#ifdef FIO_HAVE_SGIO + struct sg_io_hdr hdr; +#endif +#ifdef CONFIG_GUASI + guasi_req_t greq; +#endif +#ifdef CONFIG_SOLARISAIO + aio_result_t resultp; +#endif +#ifdef FIO_HAVE_BINJECT + struct b_user_cmd buc; +#endif +#ifdef CONFIG_RDMA + struct ibv_mr *mr; +#endif + void *mmap_data; + }; +}; + +/* + * io unit handling + */ +extern struct io_u *__get_io_u(struct thread_data *); +extern struct io_u *get_io_u(struct thread_data *); +extern void put_io_u(struct thread_data *, struct io_u *); +extern void clear_io_u(struct thread_data *, struct io_u *); +extern void requeue_io_u(struct thread_data *, struct io_u **); +extern int __must_check io_u_sync_complete(struct thread_data *, struct io_u *); +extern int __must_check io_u_queued_complete(struct thread_data *, int); +extern void io_u_queued(struct thread_data *, struct io_u *); +extern int io_u_quiesce(struct thread_data *); +extern void io_u_log_error(struct thread_data *, struct io_u *); +extern void io_u_mark_depth(struct thread_data *, unsigned int); +extern void fill_io_buffer(struct thread_data *, void *, unsigned int, unsigned int); +extern void io_u_fill_buffer(struct thread_data *td, struct io_u *, unsigned int, unsigned int); +void io_u_mark_complete(struct thread_data *, unsigned int); +void io_u_mark_submit(struct thread_data *, unsigned int); +bool queue_full(const struct thread_data *); + +int do_io_u_sync(const struct thread_data *, struct io_u *); +int do_io_u_trim(const struct thread_data *, struct io_u *); + +#ifdef FIO_INC_DEBUG +static inline void dprint_io_u(struct io_u *io_u, const char *p) +{ + struct fio_file *f = io_u->file; + + dprint(FD_IO, "%s: io_u %p: off=%llu/len=%lu/ddir=%d", p, io_u, + (unsigned long long) io_u->offset, + io_u->buflen, io_u->ddir); + if (f) + dprint(FD_IO, "/%s", f->file_name); + dprint(FD_IO, "\n"); +} +#else +#define dprint_io_u(io_u, p) +#endif + +static inline enum fio_ddir acct_ddir(struct io_u *io_u) +{ + if (io_u->acct_ddir != -1) + return io_u->acct_ddir; + + return io_u->ddir; +} + +#define io_u_clear(td, io_u, val) \ + td_flags_clear((td), &(io_u->flags), (val)) +#define io_u_set(td, io_u, val) \ + td_flags_set((td), &(io_u)->flags, (val)) + +#endif |