blob: e74836f7bc881720f7b7bef984c879ea5179c726 [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 <getopt.h>
#include <inttypes.h>
#include <assert.h>
#include "compiler/compiler.h"
#include "flist.h"
#include "fifo.h"
#include "rbtree.h"
#include "arch/arch.h"
#include "os/os.h"
#include "mutex.h"
#include "log.h"
#include "debug.h"
#ifdef FIO_HAVE_GUASI
#include <guasi.h>
#endif
#ifdef FIO_HAVE_SOLARISAIO
#include <sys/asynch.h>
#endif
enum fio_ddir {
DDIR_READ = 0,
DDIR_WRITE,
DDIR_SYNC,
DDIR_INVAL = -1,
};
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,
};
enum file_lock_mode {
FILE_LOCK_NONE,
FILE_LOCK_EXCLUSIVE,
FILE_LOCK_READWRITE,
};
/*
* 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 {
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;
};
};
enum {
IO_U_F_FREE = 1 << 0,
IO_U_F_FLIGHT = 1 << 1,
};
struct thread_data;
/*
* 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_GUASI
guasi_req_t greq;
#endif
#ifdef FIO_HAVE_SOLARISAIO
aio_result_t resultp;
#endif
};
struct timeval start_time;
struct timeval issue_time;
/*
* Allocated/set buffer and length
*/
void *buf;
unsigned long buflen;
unsigned long long offset;
unsigned long long endpos;
/*
* 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;
void *engine_data;
};
unsigned int flags;
struct fio_file *file;
struct flist_head list;
/*
* Callback for io completion
*/
int (*end_io)(struct thread_data *, 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_CRC64, /* crc64 sum data blocks */
VERIFY_CRC32, /* crc32 sum data blocks */
VERIFY_CRC32C, /* crc32c sum data blocks */
VERIFY_CRC32C_INTEL, /* crc32c sum data blocks with hw */
VERIFY_CRC16, /* crc16 sum data blocks */
VERIFY_CRC7, /* crc7 sum data blocks */
VERIFY_SHA256, /* sha256 sum data blocks */
VERIFY_SHA512, /* sha512 sum data blocks */
VERIFY_META, /* block_num, timestamp etc. */
VERIFY_NULL, /* pretend to verify */
};
/*
* A header structure associated with each checksummed data block. It is
* followed by a checksum specific header that contains the verification
* data.
*/
struct verify_header {
unsigned int fio_magic;
unsigned int len;
unsigned int verify_type;
};
struct vhdr_md5 {
uint32_t md5_digest[16];
};
struct vhdr_sha512 {
uint8_t sha512[128];
};
struct vhdr_sha256 {
uint8_t sha256[128];
};
struct vhdr_crc64 {
uint64_t crc64;
};
struct vhdr_crc32 {
uint32_t crc32;
};
struct vhdr_crc16 {
uint16_t crc16;
};
struct vhdr_crc7 {
uint8_t crc7;
};
struct vhdr_meta {
uint64_t offset;
unsigned char thread;
unsigned short numberio;
unsigned long time_sec;
unsigned long time_usec;
};
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 */
FIO_TYPE_PIPE, /* pipe */
};
enum fio_ioengine_flags {
FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
FIO_RAWIO = 1 << 1, /* some sort of direct/raw io */
FIO_DISKLESSIO = 1 << 2, /* no disk involved */
FIO_NOEXTEND = 1 << 3, /* engine can't extend file */
FIO_NODISKUTIL = 1 << 4, /* diskutil can't handle filename */
FIO_UNIDIR = 1 << 5, /* engine is uni-directional */
FIO_NOIO = 1 << 6, /* thread does only pseudo IO */
FIO_SIGQUIT = 1 << 7, /* needs SIGQUIT to exit */
};
enum fio_file_flags {
FIO_FILE_OPEN = 1 << 0, /* file is open */
FIO_FILE_CLOSING = 1 << 1, /* file being closed */
FIO_FILE_EXTEND = 1 << 2, /* needs extend */
FIO_FILE_DONE = 1 << 3, /* io completed to this file */
FIO_SIZE_KNOWN = 1 << 4, /* size has been set */
FIO_FILE_HASHED = 1 << 5, /* file is on hash */
};
/*
* Each thread_data structure has a number of files associated with it,
* this structure holds state information for a single file.
*/
struct fio_file {
struct flist_head hash_list;
enum fio_filetype filetype;
/*
* A file may not be a file descriptor, let the io engine decide
*/
union {
unsigned long file_data;
int fd;
};
/*
* filename and possible memory mapping
*/
char *file_name;
void *mmap;
unsigned int major, minor;
/*
* size of the file, offset into file, and io size from that offset
*/
unsigned long long real_file_size;
unsigned long long file_offset;
unsigned long long io_size;
unsigned long long last_pos;
/*
* if io is protected by a semaphore, this is set
*/
struct fio_mutex *lock;
void *lock_owner;
unsigned int lock_batch;
enum fio_ddir lock_ddir;
/*
* block map for random io
*/
unsigned int *file_map;
unsigned int num_maps;
unsigned int last_free_lookup;
int references;
enum fio_file_flags flags;
};
/*
* How many depth levels to log
*/
#define FIO_IO_U_MAP_NR 8
#define FIO_IO_U_LAT_U_NR 10
#define FIO_IO_U_LAT_M_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;
unsigned long minf, majf;
/*
* IO depth and latency stats
*/
unsigned int io_u_map[FIO_IO_U_MAP_NR];
unsigned int io_u_submit[FIO_IO_U_MAP_NR];
unsigned int io_u_complete[FIO_IO_U_MAP_NR];
unsigned int io_u_lat_u[FIO_IO_U_LAT_U_NR];
unsigned int io_u_lat_m[FIO_IO_U_LAT_M_NR];
unsigned long total_io_u[2];
unsigned long short_io_u[2];
unsigned long total_submit;
unsigned long total_complete;
unsigned long long io_bytes[2];
unsigned long runtime[2];
unsigned long total_run_time;
};
struct bssplit {
unsigned int bs;
unsigned char perc;
};
struct thread_options {
int pad;
char *description;
char *name;
char *directory;
char *filename;
char *opendir;
char *ioengine;
enum td_ddir td_ddir;
unsigned int ddir_nr;
unsigned int iodepth;
unsigned int iodepth_low;
unsigned int iodepth_batch;
unsigned int iodepth_batch_complete;
unsigned long long size;
unsigned int fill_device;
unsigned long long file_size_low;
unsigned long long file_size_high;
unsigned long long start_offset;
unsigned int bs[2];
unsigned int min_bs[2];
unsigned int max_bs[2];
struct bssplit *bssplit;
unsigned int bssplit_nr;
unsigned int nr_files;
unsigned int open_files;
enum file_lock_mode file_lock_mode;
unsigned int lockfile_batch;
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 do_verify;
unsigned int verifysort;
unsigned int verify_interval;
unsigned int verify_offset;
unsigned int verify_pattern;
unsigned int verify_pattern_bytes;
unsigned int verify_fatal;
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 softrandommap;
unsigned int bs_unaligned;
unsigned int fsync_on_close;
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 long timeout;
unsigned long long ramp_time;
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;
unsigned int stonewall;
unsigned int new_group;
unsigned int numjobs;
os_cpu_mask_t cpumask;
unsigned int cpumask_set;
unsigned int iolog;
unsigned int rwmixcycle;
unsigned int rwmix[2];
unsigned int nice;
unsigned int file_service_type;
unsigned int group_reporting;
unsigned int fadvise_hint;
unsigned int zero_buffers;
unsigned int refill_buffers;
unsigned int time_based;
unsigned int disable_clat;
unsigned int disable_slat;
unsigned int disable_bw;
unsigned int gtod_reduce;
unsigned int gtod_cpu;
unsigned int gtod_offload;
char *read_iolog_file;
char *write_iolog_file;
char *bw_log_file;
char *lat_log_file;
/*
* Pre-run and post-run shell
*/
char *exec_prerun;
char *exec_postrun;
unsigned int rate;
unsigned int ratemin;
unsigned int ratecycle;
unsigned int rate_iops;
unsigned int rate_iops_min;
char *ioscheduler;
/*
* CPU "io" cycle burner
*/
unsigned int cpuload;
unsigned int cpucycle;
};
#define FIO_VERROR_SIZE 128
/*
* This describes a single thread/process executing a fio job.
*/
struct thread_data {
struct thread_options o;
char verror[FIO_VERROR_SIZE];
pthread_t thread;
int thread_number;
int groupid;
struct thread_stat ts;
struct fio_file **files;
unsigned int files_index;
unsigned int nr_open_files;
unsigned int nr_done_files;
unsigned int nr_normal_files;
union {
unsigned int next_file;
os_random_state_t next_file_state;
};
int error;
int done;
pid_t pid;
char *orig_buffer;
size_t orig_buffer_size;
volatile int terminate;
volatile int runstate;
unsigned int ioprio;
unsigned int ioprio_set;
unsigned int last_was_sync;
char *mmapfile;
int mmapfd;
void *iolog_buf;
FILE *iolog_f;
char *sysfs_root;
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;
unsigned int io_u_queued;
struct flist_head io_u_freelist;
struct flist_head io_u_busylist;
struct flist_head io_u_requeues;
/*
* Rate state
*/
unsigned long rate_usec_cycle;
long rate_pending_usleep;
unsigned long rate_bytes;
unsigned long rate_blocks;
struct timeval lastrate;
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 io_skip_bytes;
unsigned long long this_io_bytes[2];
unsigned long long zone_bytes;
struct fio_mutex *mutex;
/*
* State for random io, a bitmap of blocks done vs not done
*/
os_random_state_t random_state;
struct timeval start; /* start of this loop */
struct timeval epoch; /* time job was started */
struct timeval rw_end[2];
struct timeval last_issue;
struct timeval tv_cache;
unsigned int tv_cache_nr;
unsigned int tv_cache_mask;
unsigned int rw_end_set[2];
unsigned int ramp_time_over;
/*
* read/write mixed workload state
*/
os_random_state_t rwmix_state;
unsigned long rwmix_issues;
enum fio_ddir rwmix_ddir;
unsigned int ddir_nr;
/*
* IO history logs for verification. We use a tree for sorting,
* if we are overwriting. Otherwise just use a fifo.
*/
struct rb_root io_hist_tree;
struct flist_head io_hist_list;
/*
* For IO replaying
*/
struct flist_head io_log_list;
/*
* for fileservice, how often to switch to a new file
*/
unsigned int file_service_nr;
unsigned int file_service_left;
struct fio_file *file_service_file;
/*
* For generating file sizes
*/
os_random_state_t file_size_state;
};
/*
* roundrobin available files, or choose one at random.
*/
enum {
FIO_FSERVICE_RANDOM = 1,
FIO_FSERVICE_RR = 2,
};
/*
* when should interactive ETA output be generated
*/
enum {
FIO_ETA_AUTO,
FIO_ETA_ALWAYS,
FIO_ETA_NEVER,
};
#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 nr_process, nr_thread;
extern int shm_id;
extern int groupid;
extern int terse_output;
extern int temp_stall_ts;
extern unsigned long long mlock_size;
extern unsigned long page_mask, page_size;
extern int read_only;
extern int eta_print;
extern unsigned long done_secs;
extern char *job_section;
extern int fio_gtod_offload;
extern int fio_gtod_cpu;
extern struct thread_data *threads;
#define td_read(td) ((td)->o.td_ddir & TD_DDIR_READ)
#define td_write(td) ((td)->o.td_ddir & TD_DDIR_WRITE)
#define td_rw(td) (((td)->o.td_ddir & TD_DDIR_RW) == TD_DDIR_RW)
#define td_random(td) ((td)->o.td_ddir & TD_DDIR_RAND)
#define file_randommap(td, f) (!(td)->o.norandommap && (f)->file_map)
static inline void fio_ro_check(struct thread_data *td, struct io_u *io_u)
{
assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
}
#define BLOCKS_PER_MAP (8 * sizeof(int))
#define TO_MAP_BLOCK(f, b) (b)
#define RAND_MAP_IDX(f, b) (TO_MAP_BLOCK(f, b) / BLOCKS_PER_MAP)
#define RAND_MAP_BIT(f, b) (TO_MAP_BLOCK(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->o.odirect)
return 0;
if (td_write(td) || td_rw(td) || td->o.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 flist_head list;
/* If this disk is a slave, hook it into the master's
* list using this head.
*/
struct flist_head slavelist;
char *name;
char *sysfs_root;
char path[256];
int major, minor;
struct disk_util_stat dus;
struct disk_util_stat last_dus;
/* For software raids, this entry maintains pointers to the
* entries for the slave devices. The disk_util entries for
* the slaves devices should primarily be maintained through
* the disk_list list, i.e. for memory allocation and
* de-allocation, etc. Whereas this list should be used only
* for aggregating a software RAID's disk util figures.
*/
struct flist_head slaves;
unsigned long msec;
struct timeval time;
};
#define DISK_UTIL_MSEC (250)
/*
* 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_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 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);
/*
* Time functions
*/
extern unsigned long long utime_since(struct timeval *, struct timeval *);
extern unsigned long 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_spin(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 fio_gtod_init(void);
extern void fio_gtod_update(void);
extern void set_genesis_time(void);
extern int ramp_time_over(struct thread_data *);
extern int in_ramp_time(struct thread_data *);
/*
* Init/option functions
*/
extern int __must_check parse_options(int, char **);
extern int fio_options_parse(struct thread_data *, char **, int);
extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
extern void fio_fill_default_options(struct thread_data *);
extern int fio_show_option_help(const char *);
extern void fio_options_dup_and_init(struct option *);
extern void options_mem_dupe(struct thread_data *);
extern void options_mem_free(struct thread_data *);
#define FIO_GETOPT_JOB 0x89988998
#define FIO_NR_OPTIONS 128
/*
* File setup/shutdown
*/
extern void close_files(struct thread_data *);
extern void close_and_free_files(struct thread_data *);
extern int __must_check setup_files(struct thread_data *);
extern int __must_check open_files(struct thread_data *);
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 int __must_check generic_close_file(struct thread_data *, struct fio_file *);
extern int add_file(struct thread_data *, const char *);
extern void get_file(struct fio_file *);
extern int __must_check put_file(struct thread_data *, struct fio_file *);
extern void lock_file(struct thread_data *, struct fio_file *, enum fio_ddir);
extern void unlock_file(struct thread_data *, struct fio_file *);
extern void unlock_file_all(struct thread_data *, struct fio_file *);
extern int add_dir_files(struct thread_data *, const char *);
extern int init_random_map(struct thread_data *);
extern void dup_files(struct thread_data *, struct thread_data *);
extern int get_fileno(struct thread_data *, const char *);
extern void free_release_files(struct thread_data *);
/*
* ETA/status stuff
*/
extern void print_thread_status(void);
extern void print_status_init(int);
/*
* disk util stuff
*/
#ifdef FIO_HAVE_DISK_UTIL
extern void show_disk_util(void);
extern void init_disk_util(struct thread_data *);
extern void update_io_ticks(void);
#else
#define show_disk_util()
#define init_disk_util(td)
#define update_io_ticks()
#endif
/*
* 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_RAMP,
TD_RUNNING,
TD_VERIFYING,
TD_FSYNCING,
TD_EXITED,
TD_REAPED,
};
extern void td_set_runstate(struct thread_data *, int);
/*
* 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 thread_data *, 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) flist_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_mark_depth(struct thread_data *, unsigned int);
extern void io_u_fill_buffer(struct thread_data *td, struct io_u *, unsigned int);
void io_u_mark_complete(struct thread_data *, unsigned int);
void io_u_mark_submit(struct thread_data *, unsigned int);
/*
* Reset stats after ramp time completes
*/
extern void reset_all_stats(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 *, unsigned int, unsigned 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 int td_io_close_file(struct thread_data *, struct fio_file *);
/*
* blktrace support
*/
#ifdef FIO_HAVE_BLKTRACE
extern int is_blktrace(const char *);
extern int load_blktrace(struct thread_data *, const char *);
#endif
struct ioengine_ops {
struct flist_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 *, unsigned int, unsigned 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 *);
int (*close_file)(struct thread_data *, struct fio_file *);
void *data;
void *dlhandle;
};
#define FIO_IOOPS_VERSION 9
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) \
if ((td)->files_index) \
for ((i) = 0, (f) = (td)->files[0]; \
(i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
(i)++)
#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)
static inline void fio_file_reset(struct fio_file *f)
{
f->last_free_lookup = 0;
f->last_pos = f->file_offset;
}
static inline void clear_error(struct thread_data *td)
{
td->error = 0;
td->verror[0] = '\0';
}
#ifdef FIO_INC_DEBUG
static inline void dprint_io_u(struct io_u *io_u, const char *p)
{
struct fio_file *f = io_u->file;
dprint(FD_IO, "%s: io_u %p: off=%llu/len=%lu/ddir=%d", p, io_u,
(unsigned long long) io_u->offset,
io_u->buflen, io_u->ddir);
if (fio_debug & (1 << FD_IO)) {
if (f)
log_info("/%s", f->file_name);
log_info("\n");
}
}
#else
#define dprint_io_u(io_u, p)
#endif
static inline int fio_fill_issue_time(struct thread_data *td)
{
if (td->o.read_iolog_file ||
!td->o.disable_clat || !td->o.disable_slat || !td->o.disable_bw)
return 1;
return 0;
}
#endif