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[fio.git] / iolog.h
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1#ifndef FIO_IOLOG_H
2#define FIO_IOLOG_H
3
c7c6cb4c 4#include "lib/ieee754.h"
802ad4a8 5
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6/*
7 * Use for maintaining statistics
8 */
9struct io_stat {
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10 uint64_t max_val;
11 uint64_t min_val;
12 uint64_t samples;
5995a6a4 13
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14 fio_fp64_t mean;
15 fio_fp64_t S;
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16};
17
18/*
19 * A single data sample
20 */
21struct io_sample {
22 unsigned long time;
23 unsigned long val;
24 enum fio_ddir ddir;
25 unsigned int bs;
26};
27
28/*
29 * Dynamically growing data sample log
30 */
31struct io_log {
32 unsigned long nr_samples;
33 unsigned long max_samples;
34 struct io_sample *log;
35};
36
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37enum {
38 IP_F_ONRB = 1,
39 IP_F_ONLIST = 2,
40 IP_F_TRIMMED = 4,
41};
42
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43/*
44 * When logging io actions, this matches a single sent io_u
45 */
46struct io_piece {
47 union {
48 struct rb_node rb_node;
49 struct flist_head list;
50 };
0d29de83 51 struct flist_head trim_list;
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52 union {
53 int fileno;
54 struct fio_file *file;
55 };
56 unsigned long long offset;
57 unsigned long len;
a917a8b3 58 unsigned int flags;
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59 enum fio_ddir ddir;
60 union {
61 unsigned long delay;
62 unsigned int file_action;
63 };
64};
65
66/*
67 * Log exports
68 */
69enum file_log_act {
70 FIO_LOG_ADD_FILE,
71 FIO_LOG_OPEN_FILE,
72 FIO_LOG_CLOSE_FILE,
73 FIO_LOG_UNLINK_FILE,
74};
75
76extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
77extern void log_io_u(struct thread_data *, struct io_u *);
78extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
79extern int __must_check init_iolog(struct thread_data *td);
80extern void log_io_piece(struct thread_data *, struct io_u *);
81extern void queue_io_piece(struct thread_data *, struct io_piece *);
82extern void prune_io_piece_log(struct thread_data *);
83extern void write_iolog_close(struct thread_data *);
84
85/*
86 * Logging
87 */
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88extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long,
89 unsigned int);
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90extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long,
91 unsigned int);
92extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long,
93 unsigned int);
94extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int,
95 struct timeval *);
c8eeb9df 96extern void add_iops_sample(struct thread_data *, enum fio_ddir, struct timeval *);
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97extern void init_disk_util(struct thread_data *);
98extern void update_rusage_stat(struct thread_data *);
99extern void update_io_ticks(void);
100extern void setup_log(struct io_log **);
101extern void finish_log(struct thread_data *, struct io_log *, const char *);
102extern void finish_log_named(struct thread_data *, struct io_log *, const char *, const char *);
103extern void __finish_log(struct io_log *, const char *);
104extern struct io_log *agg_io_log[2];
105extern int write_bw_log;
106extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int);
107
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108static inline void init_ipo(struct io_piece *ipo)
109{
110 memset(ipo, 0, sizeof(*ipo));
111 INIT_FLIST_HEAD(&ipo->trim_list);
112}
113
5995a6a4 114#endif