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[PATCH] Add support for read/write mixed io
[fio.git] / fio.h
CommitLineData
ebac4655
JA		 1#ifndef FIO_H
2#define FIO_H
3
4#include <sched.h>
5#include <limits.h>
6#include <pthread.h>
7#include <sys/time.h>
8#include <sys/resource.h>
9#include <semaphore.h>
10
11#include "list.h"
12#include "md5.h"
13#include "crc32.h"
14#include "arch.h"
15#include "os.h"
16
17struct io_stat {
18 unsigned long val;
19 unsigned long val_sq;
20 unsigned long max_val;
21 unsigned long min_val;
22 unsigned long samples;
23};
24
25struct io_sample {
26 unsigned long time;
27 unsigned long val;
28 unsigned int ddir;
29};
30
31struct io_log {
32 unsigned long nr_samples;
33 unsigned long max_samples;
34 struct io_sample *log;
35};
36
37struct io_piece {
38 struct list_head list;
39 unsigned long long offset;
40 unsigned int len;
41};
42
43/*
44 * The io unit
45 */
46struct io_u {
47 union {
48#ifdef FIO_HAVE_LIBAIO
49 struct iocb iocb;
50#endif
51#ifdef FIO_HAVE_POSIXAIO
52 struct aiocb aiocb;
53#endif
54#ifdef FIO_HAVE_SGIO
55 struct sg_io_hdr hdr;
56#endif
57 };
58 struct timeval start_time;
59 struct timeval issue_time;
60
61 char *buf;
62 unsigned int buflen;
63 unsigned long long offset;
b1ff3403 64 unsigned int index;
ebac4655
JA		 65
66 unsigned int resid;
67 unsigned int error;
68
69 unsigned char seen;
70 unsigned char ddir;
71
72 struct list_head list;
73};
74
75#define FIO_HDR_MAGIC 0xf00baaef
76
77enum {
78 VERIFY_NONE = 0,
79 VERIFY_MD5,
80 VERIFY_CRC32,
81};
82
83struct verify_header {
84 unsigned int fio_magic;
85 unsigned int len;
86 unsigned int verify_type;
87 union {
88 char md5_digest[MD5_HASH_WORDS * 4];
89 unsigned long crc32;
90 };
91};
92
93struct group_run_stats {
9104f874
JA		 94 unsigned long long max_run[2], min_run[2];
95 unsigned long long max_bw[2], min_bw[2];
96 unsigned long long io_mb[2];
97 unsigned long long agg[2];
ebac4655
JA		 98};
99
100struct thread_data {
101 char file_name[256];
102 char directory[256];
103 char verror[80];
104 pthread_t thread;
105 int thread_number;
106 int groupid;
107 int filetype;
108 int error;
109 int fd;
110 void *mmap;
111 pid_t pid;
112 char *orig_buffer;
113 size_t orig_buffer_size;
114 volatile int terminate;
115 volatile int runstate;
116 volatile int old_runstate;
117 unsigned int ddir;
3d60d1ed 118 unsigned int iomix;
ebac4655
JA		 119 unsigned int ioprio;
120 unsigned int sequential;
121 unsigned int bs;
122 unsigned int min_bs;
123 unsigned int max_bs;
124 unsigned int odirect;
125 unsigned int thinktime;
126 unsigned int fsync_blocks;
127 unsigned int start_delay;
128 unsigned int timeout;
129 unsigned int io_engine;
130 unsigned int create_file;
131 unsigned int overwrite;
132 unsigned int invalidate_cache;
133 unsigned int bw_avg_time;
134 unsigned int create_serialize;
135 unsigned int create_fsync;
136 unsigned int loops;
137 unsigned long long file_size;
838a3cd3 138 unsigned long long real_file_size;
ebac4655 139 unsigned long long file_offset;
20dc95c4
JA		 140 unsigned long long zone_size;
141 unsigned long long zone_skip;
ebac4655
JA		 142 unsigned int sync_io;
143 unsigned int mem_type;
144 unsigned int verify;
145 unsigned int stonewall;
146 unsigned int numjobs;
147 unsigned int use_thread;
148 unsigned int iodepth;
149 os_cpu_mask_t cpumask;
eba09dd3 150 unsigned int jobnum;
ebac4655
JA		 151
152 struct drand48_data bsrange_state;
153 struct drand48_data verify_state;
154
155 int shm_id;
156
ebac4655
JA		 157 void *io_data;
158 char io_engine_name[16];
159 int (*io_prep)(struct thread_data *, struct io_u *);
160 int (*io_queue)(struct thread_data *, struct io_u *);
161 int (*io_getevents)(struct thread_data *, int, int, struct timespec *);
162 struct io_u *(*io_event)(struct thread_data *, int);
163 int (*io_cancel)(struct thread_data *, struct io_u *);
164 void (*io_cleanup)(struct thread_data *);
165 int (*io_sync)(struct thread_data *);
166
167 unsigned int cur_depth;
168 struct list_head io_u_freelist;
169 struct list_head io_u_busylist;
170
171 unsigned int rate;
172 unsigned int ratemin;
173 unsigned int ratecycle;
174 unsigned long rate_usec_cycle;
175 long rate_pending_usleep;
176 unsigned long rate_bytes;
177 struct timeval lastrate;
178
179 unsigned long runtime[2]; /* msec */
180 unsigned long long io_size;
181 unsigned long long total_io_size;
182
9104f874
JA		 183 unsigned long long io_blocks[2];
184 unsigned long long io_bytes[2];
185 unsigned long long zone_bytes;
186 unsigned long long this_io_bytes[2];
20dc95c4 187 unsigned long long last_pos;
ebac4655
JA		 188 sem_t mutex;
189
190 struct drand48_data random_state;
191 unsigned long *file_map;
192 unsigned int num_maps;
193
194 /*
195 * bandwidth and latency stats
196 */
197 struct io_stat clat_stat[2]; /* completion latency */
198 struct io_stat slat_stat[2]; /* submission latency */
199 struct io_stat bw_stat[2]; /* bandwidth stats */
200
9104f874 201 unsigned long long stat_io_bytes[2];
ebac4655
JA		 202 struct timeval stat_sample_time[2];
203
204 struct io_log *slat_log;
205 struct io_log *clat_log;
206 struct io_log *bw_log;
207
208 struct timeval start; /* start of this loop */
209 struct timeval epoch; /* time job was started */
210
211 struct rusage ru_start;
212 struct rusage ru_end;
213 unsigned long usr_time;
214 unsigned long sys_time;
215 unsigned long ctx;
216
217 unsigned int do_disk_util;
218 unsigned int override_sync;
219
220 struct list_head io_hist_list;
221};
222
223#define td_verror(td, err) \
224 do { \
225 int e = (err); \
226 (td)->error = e; \
227 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, strerror(e)); \
228 } while (0)
229
230extern int parse_jobs_ini(char *);
231extern int parse_options(int, char **);
232extern void finish_log(struct thread_data *, struct io_log *, const char *);
233extern int init_random_state(struct thread_data *);
b1ff3403
JA		 234extern struct io_u *__get_io_u(struct thread_data *);
235extern void put_io_u(struct thread_data *, struct io_u *);
ebac4655
JA		 236
237extern int rate_quit;
238extern int write_lat_log;
239extern int write_bw_log;
240extern int exitall_on_terminate;
241extern int thread_number;
242extern int shm_id;
243extern int groupid;
244
245extern struct thread_data *threads;
246
247enum {
248 DDIR_READ = 0,
249 DDIR_WRITE,
250};
251
252/*
253 * What type of allocation to use for io buffers
254 */
255enum {
256 MEM_MALLOC, /* ordinary malloc */
257 MEM_SHM, /* use shared memory segments */
258 MEM_MMAP, /* use anonynomous mmap */
259};
260
261/*
262 * The type of object we are working on
263 */
264enum {
265 FIO_TYPE_FILE = 1,
266 FIO_TYPE_BD,
0af7b542 267 FIO_TYPE_CHAR,
ebac4655
JA		 268};
269
270enum {
271 FIO_SYNCIO = 1 << 0,
272 FIO_MMAPIO = 1 << 1 | FIO_SYNCIO,
273 FIO_LIBAIO = 1 << 2,
274 FIO_POSIXAIO = 1 << 3,
275 FIO_SGIO = 1 << 4,
276};
277
278#define td_read(td) ((td)->ddir == DDIR_READ)
279#define td_write(td) ((td)->ddir == DDIR_WRITE)
3d60d1ed 280#define td_rw(td) ((td)->iomix != 0)
ebac4655
JA		 281
282#define BLOCKS_PER_MAP (8 * sizeof(long))
283#define TO_MAP_BLOCK(td, b) ((b) - ((td)->file_offset / (td)->min_bs))
284#define RAND_MAP_IDX(td, b) (TO_MAP_BLOCK(td, b) / BLOCKS_PER_MAP)
285#define RAND_MAP_BIT(td, b) (TO_MAP_BLOCK(td, b) & (BLOCKS_PER_MAP - 1))
286
287#define MAX_JOBS (1024)
288
289struct disk_util_stat {
290 unsigned ios[2];
291 unsigned merges[2];
292 unsigned long long sectors[2];
293 unsigned ticks[2];
294 unsigned io_ticks;
295 unsigned time_in_queue;
296};
297
298struct disk_util {
299 struct list_head list;
300
301 char *name;
302 char path[256];
303 dev_t dev;
304
305 struct disk_util_stat dus;
306 struct disk_util_stat last_dus;
307
308 unsigned long msec;
309 struct timeval time;
310};
311
312struct io_completion_data {
313 int nr; /* input */
314
315 int error; /* output */
316 unsigned long bytes_done[2]; /* output */
317};
318
319#define DISK_UTIL_MSEC (250)
320
6a0106a0
JA		 321#ifndef min
322#define min(a, b) ((a) < (b) ? (a) : (b))
323#endif
324
ebac4655 325#endif
fio - Flexible IO Tester