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#ifndef FIO_IOLOG_H
#define FIO_IOLOG_H
/*
* Use for maintaining statistics
*/
struct io_stat {
unsigned long max_val;
unsigned long min_val;
unsigned long samples;
double mean;
double S;
};
/*
* A single data sample
*/
struct io_sample {
unsigned long time;
unsigned long val;
enum fio_ddir ddir;
unsigned int bs;
};
/*
* Dynamically growing data sample log
*/
struct io_log {
unsigned long nr_samples;
unsigned long max_samples;
struct io_sample *log;
};
/*
* When logging io actions, this matches a single sent io_u
*/
struct io_piece {
union {
struct rb_node rb_node;
struct flist_head list;
};
union {
int fileno;
struct fio_file *file;
};
unsigned long long offset;
unsigned long len;
enum fio_ddir ddir;
union {
unsigned long delay;
unsigned int file_action;
};
};
/*
* Log exports
*/
enum file_log_act {
FIO_LOG_ADD_FILE,
FIO_LOG_OPEN_FILE,
FIO_LOG_CLOSE_FILE,
FIO_LOG_UNLINK_FILE,
};
extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
extern void log_io_u(struct thread_data *, struct io_u *);
extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
extern int __must_check init_iolog(struct thread_data *td);
extern void log_io_piece(struct thread_data *, struct io_u *);
extern void queue_io_piece(struct thread_data *, struct io_piece *);
extern void prune_io_piece_log(struct thread_data *);
extern void write_iolog_close(struct thread_data *);
/*
* Logging
*/
extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long,
unsigned int);
extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long,
unsigned int);
extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long,
unsigned int);
extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int,
struct timeval *);
extern void show_run_stats(void);
extern void init_disk_util(struct thread_data *);
extern void update_rusage_stat(struct thread_data *);
extern void update_io_ticks(void);
extern void setup_log(struct io_log **);
extern void finish_log(struct thread_data *, struct io_log *, const char *);
extern void finish_log_named(struct thread_data *, struct io_log *, const char *, const char *);
extern void __finish_log(struct io_log *, const char *);
extern struct io_log *agg_io_log[2];
extern int write_bw_log;
extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int);
#endif
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