blob: cc68603499759b369f25b1038e30a07036074874 [file] [log] [blame]
#ifndef FIO_H
#define FIO_H
#include <sched.h>
#include <limits.h>
#include <pthread.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include "list.h"
#include "md5.h"
#include "crc32.h"
#include "arch.h"
#include "os.h"
struct io_stat {
unsigned long val;
unsigned long val_sq;
unsigned long max_val;
unsigned long min_val;
unsigned long samples;
};
struct io_sample {
unsigned long time;
unsigned long val;
unsigned int ddir;
};
struct io_log {
unsigned long nr_samples;
unsigned long max_samples;
struct io_sample *log;
};
struct io_piece {
struct list_head list;
unsigned long long offset;
unsigned int len;
int ddir;
};
/*
* The io unit
*/
struct io_u {
union {
#ifdef FIO_HAVE_LIBAIO
struct iocb iocb;
#endif
#ifdef FIO_HAVE_POSIXAIO
struct aiocb aiocb;
#endif
#ifdef FIO_HAVE_SGIO
struct sg_io_hdr hdr;
#endif
};
struct timeval start_time;
struct timeval issue_time;
char *buf;
unsigned int buflen;
unsigned long long offset;
unsigned int index;
unsigned int resid;
unsigned int error;
unsigned char seen;
unsigned char ddir;
struct list_head list;
};
#define FIO_HDR_MAGIC 0xf00baaef
enum {
VERIFY_NONE = 0,
VERIFY_MD5,
VERIFY_CRC32,
};
struct verify_header {
unsigned int fio_magic;
unsigned int len;
unsigned int verify_type;
union {
char md5_digest[MD5_HASH_WORDS * 4];
unsigned long crc32;
};
};
struct group_run_stats {
unsigned long long max_run[2], min_run[2];
unsigned long long max_bw[2], min_bw[2];
unsigned long long io_kb[2];
unsigned long long agg[2];
};
enum fio_ddir {
DDIR_READ = 0,
DDIR_WRITE,
};
/*
* What type of allocation to use for io buffers
*/
enum fio_memtype {
MEM_MALLOC = 0, /* ordinary malloc */
MEM_SHM, /* use shared memory segments */
MEM_MMAP, /* use anonynomous mmap */
};
/*
* The type of object we are working on
*/
enum fio_filetype {
FIO_TYPE_FILE = 1,
FIO_TYPE_BD,
FIO_TYPE_CHAR,
};
enum fio_iotype {
FIO_SYNCIO = 1 << 0,
FIO_MMAPIO = 1 << 1 | FIO_SYNCIO,
FIO_LIBAIO = 1 << 2,
FIO_POSIXAIO = 1 << 3,
FIO_SGIO = 1 << 4,
FIO_SPLICEIO = 1 << 5 | FIO_SYNCIO,
};
/*
* This describes a single thread/process executing a fio job.
*/
struct thread_data {
char name[32];
char *file_name;
char *directory;
char verror[80];
pthread_t thread;
int thread_number;
int groupid;
enum fio_filetype filetype;
int error;
int fd;
void *mmap;
pid_t pid;
char *orig_buffer;
size_t orig_buffer_size;
volatile int terminate;
volatile int runstate;
enum fio_ddir ddir;
unsigned int iomix;
unsigned int ioprio;
unsigned char sequential;
unsigned char odirect;
unsigned char create_file;
unsigned char invalidate_cache;
unsigned char create_serialize;
unsigned char create_fsync;
unsigned char end_fsync;
unsigned char sync_io;
unsigned char verify;
unsigned char use_thread;
unsigned char do_disk_util;
unsigned char override_sync;
unsigned char rand_repeatable;
unsigned int bs;
unsigned int min_bs;
unsigned int max_bs;
unsigned int thinktime;
unsigned int fsync_blocks;
unsigned int start_delay;
unsigned int timeout;
enum fio_iotype io_engine;
unsigned int overwrite;
unsigned int bw_avg_time;
unsigned int loops;
unsigned long long file_size;
unsigned long long real_file_size;
unsigned long long file_offset;
unsigned long long zone_size;
unsigned long long zone_skip;
enum fio_memtype mem_type;
unsigned int stonewall;
unsigned int numjobs;
unsigned int iodepth;
os_cpu_mask_t cpumask;
unsigned int iolog;
unsigned int read_iolog;
unsigned int write_iolog;
unsigned int rwmixcycle;
unsigned int rwmixread;
unsigned int nice;
char *iolog_file;
void *iolog_buf;
FILE *iolog_f;
char *sysfs_root;
char *ioscheduler;
os_random_state_t bsrange_state;
os_random_state_t verify_state;
int shm_id;
/*
* IO engine hooks, contains everything needed to submit an io_u
* to any of the available IO engines.
*/
void *io_data;
char io_engine_name[16];
int (*io_prep)(struct thread_data *, struct io_u *);
int (*io_queue)(struct thread_data *, struct io_u *);
int (*io_getevents)(struct thread_data *, int, int, struct timespec *);
struct io_u *(*io_event)(struct thread_data *, int);
int (*io_cancel)(struct thread_data *, struct io_u *);
void (*io_cleanup)(struct thread_data *);
int (*io_sync)(struct thread_data *);
/*
* Current IO depth and list of free and busy io_u's.
*/
unsigned int cur_depth;
struct list_head io_u_freelist;
struct list_head io_u_busylist;
/*
* Rate state
*/
unsigned int rate;
unsigned int ratemin;
unsigned int ratecycle;
unsigned long rate_usec_cycle;
long rate_pending_usleep;
unsigned long rate_bytes;
struct timeval lastrate;
unsigned long runtime[2]; /* msec */
unsigned long long io_size;
unsigned long long total_io_size;
unsigned long long io_blocks[2];
unsigned long long io_bytes[2];
unsigned long long zone_bytes;
unsigned long long this_io_bytes[2];
unsigned long long last_pos;
volatile int mutex;
/*
* State for random io, a bitmap of blocks done vs not done
*/
os_random_state_t random_state;
unsigned long *file_map;
unsigned int num_maps;
/*
* bandwidth and latency stats
*/
struct io_stat clat_stat[2]; /* completion latency */
struct io_stat slat_stat[2]; /* submission latency */
struct io_stat bw_stat[2]; /* bandwidth stats */
unsigned long long stat_io_bytes[2];
struct timeval stat_sample_time[2];
struct io_log *slat_log;
struct io_log *clat_log;
struct io_log *bw_log;
struct timeval start; /* start of this loop */
struct timeval epoch; /* time job was started */
/*
* fio system usage accounting
*/
struct rusage ru_start;
struct rusage ru_end;
unsigned long usr_time;
unsigned long sys_time;
unsigned long ctx;
/*
* read/write mixed workload state
*/
os_random_state_t rwmix_state;
struct timeval rwmix_switch;
enum fio_ddir rwmix_ddir;
/*
* Pre-run and post-run shell
*/
char *exec_prerun;
char *exec_postrun;
/*
* IO historic logs
*/
struct list_head io_hist_list;
struct list_head io_log_list;
};
#define td_verror(td, err) \
do { \
int e = (err); \
(td)->error = e; \
snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, strerror(e)); \
} while (0)
extern struct io_u *__get_io_u(struct thread_data *);
extern void put_io_u(struct thread_data *, struct io_u *);
extern int rate_quit;
extern int write_lat_log;
extern int write_bw_log;
extern int exitall_on_terminate;
extern int thread_number;
extern int shm_id;
extern int groupid;
extern FILE *f_out;
extern FILE *f_err;
extern struct thread_data *threads;
#define td_read(td) ((td)->ddir == DDIR_READ)
#define td_write(td) ((td)->ddir == DDIR_WRITE)
#define td_rw(td) ((td)->iomix != 0)
#define BLOCKS_PER_MAP (8 * sizeof(long))
#define TO_MAP_BLOCK(td, b) ((b) - ((td)->file_offset / (td)->min_bs))
#define RAND_MAP_IDX(td, b) (TO_MAP_BLOCK(td, b) / BLOCKS_PER_MAP)
#define RAND_MAP_BIT(td, b) (TO_MAP_BLOCK(td, b) & (BLOCKS_PER_MAP - 1))
#define MAX_JOBS (1024)
struct disk_util_stat {
unsigned ios[2];
unsigned merges[2];
unsigned long long sectors[2];
unsigned ticks[2];
unsigned io_ticks;
unsigned time_in_queue;
};
struct disk_util {
struct list_head list;
char *name;
char path[256];
dev_t dev;
struct disk_util_stat dus;
struct disk_util_stat last_dus;
unsigned long msec;
struct timeval time;
};
struct io_completion_data {
int nr; /* input */
int error; /* output */
unsigned long bytes_done[2]; /* output */
};
#define DISK_UTIL_MSEC (250)
#ifndef min
#define min(a, b) ((a) < (b) ? (a) : (b))
#endif
/*
* Log exports
*/
extern int read_iolog_get(struct thread_data *, struct io_u *);
extern void write_iolog_put(struct thread_data *, struct io_u *);
extern int init_iolog(struct thread_data *td);
extern void log_io_piece(struct thread_data *, struct io_u *);
extern void prune_io_piece_log(struct thread_data *);
extern void write_iolog_close(struct thread_data *);
/*
* Logging
*/
extern void add_clat_sample(struct thread_data *, int, unsigned long);
extern void add_slat_sample(struct thread_data *, int, unsigned long);
extern void add_bw_sample(struct thread_data *, int);
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 disk_util_timer_arm(void);
extern void setup_log(struct io_log **);
extern void finish_log(struct thread_data *, struct io_log *, const char *);
extern int setup_rate(struct thread_data *);
/*
* Time functions
*/
extern unsigned long utime_since(struct timeval *, struct timeval *);
extern unsigned long mtime_since(struct timeval *, struct timeval *);
extern unsigned long mtime_since_now(struct timeval *);
extern unsigned long time_since_now(struct timeval *);
extern void usec_sleep(struct thread_data *, unsigned long);
extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
/*
* Init functions
*/
extern int parse_options(int, char **);
extern int init_random_state(struct thread_data *);
/*
* This is a pretty crappy semaphore implementation, but with the use that fio
* has (just signalling start/go conditions), it doesn't have to be better.
* Naturally this would not work for any type of contended semaphore or
* for real locking.
*/
static inline void fio_sem_init(volatile int volatile *sem, int val)
{
*sem = val;
}
static inline void fio_sem_down(volatile int volatile *sem)
{
while (*sem == 0)
usleep(10000);
(*sem)--;
}
static inline void fio_sem_up(volatile int volatile *sem)
{
(*sem)++;
}
/*
* If logging output to a file, stderr should go to both stderr and f_err
*/
#define log_err(args...) do { \
fprintf(f_err, ##args); \
if (f_err != stderr) \
fprintf(stderr, ##args); \
} while (0)
#endif