blob: ceeb6e6f3551815fecdd8af022314b550790bf3b [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 <string.h>
#include "list.h"
#include "md5.h"
#include "crc32.h"
#include "arch.h"
#include "os.h"
#ifdef FIO_HAVE_SYSLET
#include "syslet.h"
#endif
enum fio_ddir {
DDIR_READ = 0,
DDIR_WRITE,
DDIR_SYNC,
};
enum td_ddir {
TD_DDIR_READ = 1 << 0,
TD_DDIR_WRITE = 1 << 1,
TD_DDIR_RAND = 1 << 2,
TD_DDIR_RW = TD_DDIR_READ | TD_DDIR_WRITE,
TD_DDIR_RANDREAD = TD_DDIR_READ | TD_DDIR_RAND,
TD_DDIR_RANDWRITE = TD_DDIR_WRITE | TD_DDIR_RAND,
TD_DDIR_RANDRW = TD_DDIR_RW | TD_DDIR_RAND,
};
/*
* 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;
};
/*
* 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 {
struct list_head list;
struct fio_file *file;
unsigned long long offset;
unsigned long len;
enum fio_ddir ddir;
};
#ifdef FIO_HAVE_SYSLET
struct syslet_req {
struct syslet_uatom atom; /* the atom to submit */
struct syslet_uatom *head; /* head of the sequence */
long ret; /* syscall return value */
};
#endif
enum {
IO_U_F_FREE = 1 << 0,
IO_U_F_FLIGHT = 1 << 1,
};
/*
* 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
#ifdef FIO_HAVE_SYSLET
struct syslet_req req;
#endif
};
struct timeval start_time;
struct timeval issue_time;
/*
* Allocated/set buffer and length
*/
void *buf;
unsigned long buflen;
unsigned long long offset;
/*
* IO engine state, may be different from above when we get
* partial transfers / residual data counts
*/
void *xfer_buf;
unsigned long xfer_buflen;
unsigned int resid;
unsigned int error;
enum fio_ddir ddir;
/*
* io engine private data
*/
union {
unsigned int index;
unsigned int seen;
};
unsigned int flags;
struct fio_file *file;
struct list_head list;
/*
* Callback for io completion
*/
int (*end_io)(struct io_u *);
};
/*
* io_ops->queue() return values
*/
enum {
FIO_Q_COMPLETED = 0, /* completed sync */
FIO_Q_QUEUED = 1, /* queued, will complete async */
FIO_Q_BUSY = 2, /* no more room, call ->commit() */
};
#define FIO_HDR_MAGIC 0xf00baaef
enum {
VERIFY_NONE = 0, /* no verification */
VERIFY_MD5, /* md5 sum data blocks */
VERIFY_CRC32, /* crc32 sum data blocks */
};
/*
* A header structure associated with each checksummed data block
*/
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];
};
/*
* What type of allocation to use for io buffers
*/
enum fio_memtype {
MEM_MALLOC = 0, /* ordinary malloc */
MEM_SHM, /* use shared memory segments */
MEM_SHMHUGE, /* use shared memory segments with huge pages */
MEM_MMAP, /* use anonynomous mmap */
MEM_MMAPHUGE, /* memory mapped huge file */
};
/*
* The type of object we are working on
*/
enum fio_filetype {
FIO_TYPE_FILE = 1, /* plain file */
FIO_TYPE_BD, /* block device */
FIO_TYPE_CHAR, /* character device */
};
enum fio_ioengine_flags {
FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
FIO_CPUIO = 1 << 1, /* cpu burner, doesn't do real io */
FIO_RAWIO = 1 << 2, /* some sort of direct/raw io */
FIO_DISKLESSIO = 1 << 3, /* no disk involved */
};
/*
* Each thread_data structure has a number of files associated with it,
* this structure holds state information for a single file.
*/
struct fio_file {
/*
* A file may not be a file descriptor, let the io engine decide
*/
union {
unsigned long file_data;
int fd;
};
char *file_name;
void *mmap;
unsigned long long file_size;
unsigned long long real_file_size;
unsigned long long file_offset;
unsigned long long last_pos;
unsigned long long last_completed_pos;
/*
* block map for random io
*/
unsigned long *file_map;
unsigned int num_maps;
unsigned int last_free_lookup;
unsigned int unlink;
unsigned int open;
};
/*
* How many depth levels to log
*/
#define FIO_IO_U_MAP_NR 8
#define FIO_IO_U_LAT_NR 12
struct thread_stat {
char *name;
char *verror;
int error;
int groupid;
pid_t pid;
char *description;
int members;
struct io_log *slat_log;
struct io_log *clat_log;
struct io_log *bw_log;
/*
* 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];
/*
* fio system usage accounting
*/
struct rusage ru_start;
struct rusage ru_end;
unsigned long usr_time;
unsigned long sys_time;
unsigned long ctx;
/*
* IO depth and latency stats
*/
unsigned int io_u_map[FIO_IO_U_MAP_NR];
unsigned int io_u_lat[FIO_IO_U_LAT_NR];
unsigned long total_io_u;
unsigned long long io_bytes[2];
unsigned long runtime[2];
unsigned long total_run_time;
};
/*
* This describes a single thread/process executing a fio job.
*/
struct thread_data {
int pad;
char *description;
char *name;
char *directory;
char *filename;
char verror[128];
pthread_t thread;
int thread_number;
int groupid;
struct thread_stat ts;
enum fio_filetype filetype;
struct fio_file *files;
unsigned int nr_files;
unsigned int nr_open_files;
unsigned int nr_uniq_files;
union {
unsigned int next_file;
os_random_state_t next_file_state;
};
int error;
pid_t pid;
char *orig_buffer;
size_t orig_buffer_size;
volatile int terminate;
volatile int runstate;
enum td_ddir td_ddir;
unsigned int ioprio;
unsigned int last_was_sync;
unsigned int odirect;
unsigned int invalidate_cache;
unsigned int create_serialize;
unsigned int create_fsync;
unsigned int end_fsync;
unsigned int sync_io;
unsigned int verify;
unsigned int use_thread;
unsigned int unlink;
unsigned int do_disk_util;
unsigned int override_sync;
unsigned int rand_repeatable;
unsigned int write_lat_log;
unsigned int write_bw_log;
unsigned int norandommap;
unsigned int bs_unaligned;
unsigned int bs[2];
unsigned int min_bs[2];
unsigned int max_bs[2];
unsigned int hugepage_size;
unsigned int rw_min_bs;
unsigned int thinktime;
unsigned int thinktime_spin;
unsigned int thinktime_blocks;
unsigned int fsync_blocks;
unsigned int start_delay;
unsigned long timeout;
unsigned int overwrite;
unsigned int bw_avg_time;
unsigned int loops;
unsigned long long zone_size;
unsigned long long zone_skip;
enum fio_memtype mem_type;
char *mmapfile;
int mmapfd;
unsigned int stonewall;
unsigned int numjobs;
unsigned int iodepth;
unsigned int iodepth_low;
unsigned int iodepth_batch;
os_cpu_mask_t cpumask;
unsigned int iolog;
unsigned int read_iolog;
unsigned int rwmixcycle;
unsigned int rwmixread;
unsigned int rwmixwrite;
unsigned int nice;
unsigned int file_service_type;
unsigned int group_reporting;
unsigned int open_files;
char *read_iolog_file;
char *write_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.
*/
struct ioengine_ops *io_ops;
/*
* 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;
struct list_head io_u_requeues;
unsigned int io_u_queued;
/*
* 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 long io_size;
unsigned long long total_file_size;
unsigned long long start_offset;
unsigned long long total_io_size;
unsigned long io_issues[2];
unsigned long long io_blocks[2];
unsigned long long io_bytes[2];
unsigned long long this_io_bytes[2];
unsigned long long zone_bytes;
volatile int mutex;
/*
* State for random io, a bitmap of blocks done vs not done
*/
os_random_state_t random_state;
/*
* CPU "io" cycle burner
*/
unsigned int cpuload;
unsigned int cpucycle;
struct timeval start; /* start of this loop */
struct timeval epoch; /* time job was started */
/*
* 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;
/*
* timeout handling
*/
struct timeval timeout_end;
struct itimerval timer;
};
/*
* roundrobin available files, or choose one at random.
*/
enum {
FIO_FSERVICE_RANDOM = 1,
FIO_FSERVICE_RR = 2,
};
/*
* 30 second per-io_u timeout, with 5 second intervals to avoid resetting
* the timer on each queue operation.
*/
#define IO_U_TIMEOUT_INC 5
#define IO_U_TIMEOUT 30
#define __td_verror(td, err, msg, func) \
do { \
if ((td)->error) \
break; \
int e = (err); \
(td)->error = e; \
snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
} while (0)
#define td_verror(td, err, func) \
__td_verror((td), (err), strerror((err)), (func))
#define td_vmsg(td, err, msg, func) \
__td_verror((td), (err), (msg), (func))
extern int exitall_on_terminate;
extern int thread_number;
extern int shm_id;
extern int groupid;
extern int terse_output;
extern FILE *f_out;
extern FILE *f_err;
extern int temp_stall_ts;
extern unsigned long long mlock_size;
extern struct thread_data *threads;
#define td_read(td) ((td)->td_ddir & TD_DDIR_READ)
#define td_write(td) ((td)->td_ddir & TD_DDIR_WRITE)
#define td_rw(td) (((td)->td_ddir & TD_DDIR_RW) == TD_DDIR_RW)
#define td_random(td) ((td)->td_ddir & TD_DDIR_RAND)
#define BLOCKS_PER_MAP (8 * sizeof(long))
#define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->rw_min_bs))
#define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
#define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
#define MAX_JOBS (1024)
static inline int should_fsync(struct thread_data *td)
{
if (td->last_was_sync)
return 0;
if (td->odirect)
return 0;
if (td_write(td) || td_rw(td) || td->override_sync)
return 1;
return 0;
}
/*
* Disk utils as read in /sys/block/<dev>/stat
*/
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;
};
/*
* Per-device disk util management
*/
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;
};
#define DISK_UTIL_MSEC (250)
#ifndef min
#define min(a, b) ((a) < (b) ? (a) : (b))
#endif
#ifndef max
#define max(a, b) ((a) > (b) ? (a) : (b))
#endif
/*
* Log exports
*/
extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
extern void write_iolog_put(struct thread_data *, struct io_u *);
extern int __must_check 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 *, enum fio_ddir, unsigned long);
extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long);
extern void add_bw_sample(struct thread_data *, enum fio_ddir, 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 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 void __finish_log(struct io_log *, const char *);
extern int setup_rate(struct thread_data *);
extern struct io_log *agg_io_log[2];
extern int write_bw_log;
extern void add_agg_sample(unsigned long, enum fio_ddir);
/*
* Time functions
*/
extern unsigned long utime_since(struct timeval *, struct timeval *);
extern unsigned long utime_since_now(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 unsigned long mtime_since_genesis(void);
extern void __usec_sleep(unsigned int);
extern void usec_sleep(struct thread_data *, unsigned long);
extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
extern void fill_start_time(struct timeval *);
extern void fio_gettime(struct timeval *, void *);
extern void set_genesis_time(void);
/*
* Init functions
*/
extern int __must_check parse_options(int, char **);
extern int __must_check init_random_state(struct thread_data *);
/*
* File setup/shutdown
*/
extern void close_files(struct thread_data *);
extern int __must_check setup_files(struct thread_data *);
extern int __must_check open_files(struct thread_data *);
extern int reopen_file(struct thread_data *, struct fio_file *);
extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *);
extern int __must_check generic_open_file(struct thread_data *, struct fio_file *);
extern void generic_close_file(struct thread_data *, struct fio_file *);
/*
* ETA/status stuff
*/
extern void print_thread_status(void);
extern void print_status_init(int);
/*
* Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
* will never back again. It may cycle between running/verififying/fsyncing.
* Once the thread reaches TD_EXITED, it is just waiting for the core to
* reap it.
*/
enum {
TD_NOT_CREATED = 0,
TD_CREATED,
TD_INITIALIZED,
TD_RUNNING,
TD_VERIFYING,
TD_FSYNCING,
TD_EXITED,
TD_REAPED,
};
/*
* Verify helpers
*/
extern void populate_verify_io_u(struct thread_data *, struct io_u *);
extern int __must_check get_next_verify(struct thread_data *td, struct io_u *);
extern int __must_check verify_io_u(struct io_u *);
/*
* Memory helpers
*/
extern int __must_check fio_pin_memory(void);
extern void fio_unpin_memory(void);
extern int __must_check allocate_io_mem(struct thread_data *);
extern void free_io_mem(struct thread_data *);
/*
* io unit handling
*/
#define queue_full(td) list_empty(&(td)->io_u_freelist)
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 requeue_io_u(struct thread_data *, struct io_u **);
extern long __must_check io_u_sync_complete(struct thread_data *, struct io_u *);
extern long __must_check io_u_queued_complete(struct thread_data *, int);
extern void io_u_queued(struct thread_data *, struct io_u *);
extern void io_u_log_error(struct thread_data *, struct io_u *);
extern void io_u_init_timeout(void);
extern void io_u_set_timeout(struct thread_data *);
/*
* io engine entry points
*/
extern int __must_check td_io_init(struct thread_data *);
extern int __must_check td_io_prep(struct thread_data *, struct io_u *);
extern int __must_check td_io_queue(struct thread_data *, struct io_u *);
extern int __must_check td_io_sync(struct thread_data *, struct fio_file *);
extern int __must_check td_io_getevents(struct thread_data *, int, int, struct timespec *);
extern int __must_check td_io_commit(struct thread_data *);
extern int __must_check td_io_open_file(struct thread_data *, struct fio_file *);
extern void td_io_close_file(struct thread_data *, struct fio_file *);
/*
* 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 *sem, int val)
{
*sem = val;
}
static inline void fio_sem_down(volatile int *sem)
{
while (*sem == 0)
usleep(10000);
(*sem)--;
}
static inline void fio_sem_up(volatile int *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)
FILE *get_f_out(void);
FILE *get_f_err(void);
struct ioengine_ops {
struct list_head list;
char name[16];
int version;
int flags;
int (*setup)(struct thread_data *);
int (*init)(struct thread_data *);
int (*prep)(struct thread_data *, struct io_u *);
int (*queue)(struct thread_data *, struct io_u *);
int (*commit)(struct thread_data *);
int (*getevents)(struct thread_data *, int, int, struct timespec *);
struct io_u *(*event)(struct thread_data *, int);
int (*cancel)(struct thread_data *, struct io_u *);
void (*cleanup)(struct thread_data *);
int (*open_file)(struct thread_data *, struct fio_file *);
void (*close_file)(struct thread_data *, struct fio_file *);
void *data;
void *dlhandle;
};
#define FIO_IOOPS_VERSION 6
extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
extern void register_ioengine(struct ioengine_ops *);
extern void unregister_ioengine(struct ioengine_ops *);
extern void close_ioengine(struct thread_data *);
/*
* Mark unused variables passed to ops functions as unused, to silence gcc
*/
#define fio_unused __attribute((__unused__))
#define fio_init __attribute__((constructor))
#define fio_exit __attribute__((destructor))
#define for_each_td(td, i) \
for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
#define for_each_file(td, f, i) \
for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->open_files; (i)++, (f)++)
#define fio_assert(td, cond) do { \
if (!(cond)) { \
int *__foo = NULL; \
fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
(td)->runstate = TD_EXITED; \
(td)->error = EFAULT; \
*__foo = 0; \
} \
} while (0)
#endif