[fio.git] / fio.h

#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;
	struct fio_file *file;
	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 fio_file *file;

	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_ioengine_flags {
	FIO_SYNCIO	= 1 << 0,
	FIO_CPUIO	= 1 << 1,
	FIO_MMAPIO	= 1 << 2,
};

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 *file_map;
	unsigned int num_maps;
};

/*
 * This describes a single thread/process executing a fio job.
 */
struct thread_data {
	char name[32];
	char *directory;
	char verror[80];
	pthread_t thread;
	int thread_number;
	int groupid;
	enum fio_filetype filetype;
	struct fio_file *files;
	unsigned int nr_files;
	unsigned int next_file;
	int error;
	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 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;
	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.
	 */
	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;

	/*
	 * 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_file_size;
	unsigned long long start_offset;
	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];
	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;

	/*
	 * 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, msg)					\
	do {								\
		int e = (err);						\
		(td)->error = e;					\
		snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg));	\
	} while (0)


#define td_verror(td, err)	__td_verror((td), (err), strerror((err)))
#define td_vmsg(td, err, msg)	__td_verror((td), (err), (msg))

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 int terse_output;
extern FILE *f_out;
extern FILE *f_err;
extern char *fio_inst_prefix;
extern int temp_stall_ts;

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, f, b)	((b) - ((f)->file_offset / (td)->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)

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(unsigned int);
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 *);

/*
 * File setup/shutdown
 */
extern void close_files(struct thread_data *);
extern int setup_files(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 *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)

struct ioengine_ops {
	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 (*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 (*sync)(struct thread_data *, struct fio_file *);
	void *data;
	void *dlhandle;
};

#define FIO_IOOPS_VERSION	2

extern struct ioengine_ops *load_ioengine(struct thread_data *, char *);
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 for_each_file(td, f, i)	\
	for ((i) = 0, (f) = &(td)->files[(i)]; (i) < (td)->nr_files; (i)++, (f) = &(td)->files[(i)])

#endif
Commit	Line	Data
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>
3c39a379 JA	9	#include <errno.h>
	10	#include <stdlib.h>
	11	#include <stdio.h>
6d6f031f	12	#include <unistd.h>
ebac4655 JA	13
	14	#include "list.h"
	15	#include "md5.h"
	16	#include "crc32.h"
	17	#include "arch.h"
	18	#include "os.h"
	19
	20	struct io_stat {
	21	unsigned long val;
	22	unsigned long val_sq;
	23	unsigned long max_val;
	24	unsigned long min_val;
	25	unsigned long samples;
	26	};
	27
	28	struct io_sample {
	29	unsigned long time;
	30	unsigned long val;
	31	unsigned int ddir;
	32	};
	33
	34	struct io_log {
	35	unsigned long nr_samples;
	36	unsigned long max_samples;
	37	struct io_sample *log;
	38	};
	39
	40	struct io_piece {
	41	struct list_head list;
53cdc686	42	struct fio_file *file;
ebac4655 JA	43	unsigned long long offset;
ebac4655 JA	44	unsigned int len;
aea47d44	45	int ddir;
ebac4655 JA	46	};
	47
	48	/*
	49	* The io unit
	50	*/
	51	struct io_u {
	52	union {
	53	#ifdef FIO_HAVE_LIBAIO
	54	struct iocb iocb;
	55	#endif
	56	#ifdef FIO_HAVE_POSIXAIO
	57	struct aiocb aiocb;
	58	#endif
	59	#ifdef FIO_HAVE_SGIO
	60	struct sg_io_hdr hdr;
	61	#endif
	62	};
	63	struct timeval start_time;
	64	struct timeval issue_time;
	65
	66	char *buf;
	67	unsigned int buflen;
	68	unsigned long long offset;
b1ff3403	69	unsigned int index;
ebac4655 JA	70
	71	unsigned int resid;
	72	unsigned int error;
	73
	74	unsigned char seen;
	75	unsigned char ddir;
	76
53cdc686 JA	77	struct fio_file *file;
53cdc686 JA	78
ebac4655 JA	79	struct list_head list;
	80	};
	81
	82	#define FIO_HDR_MAGIC 0xf00baaef
	83
	84	enum {
	85	VERIFY_NONE = 0,
	86	VERIFY_MD5,
	87	VERIFY_CRC32,
	88	};
	89
	90	struct verify_header {
	91	unsigned int fio_magic;
	92	unsigned int len;
	93	unsigned int verify_type;
	94	union {
	95	char md5_digest[MD5_HASH_WORDS * 4];
	96	unsigned long crc32;
	97	};
	98	};
	99
	100	struct group_run_stats {
9104f874 JA	101	unsigned long long max_run[2], min_run[2];
9104f874 JA	102	unsigned long long max_bw[2], min_bw[2];
e9b2a3fa	103	unsigned long long io_kb[2];
9104f874	104	unsigned long long agg[2];
ebac4655 JA	105	};
ebac4655 JA	106
e9c047a0 JA	107	enum fio_ddir {
	108	DDIR_READ = 0,
	109	DDIR_WRITE,
	110	};
	111
	112	/*
	113	* What type of allocation to use for io buffers
	114	*/
	115	enum fio_memtype {
	116	MEM_MALLOC = 0, /* ordinary malloc */
	117	MEM_SHM, /* use shared memory segments */
	118	MEM_MMAP, /* use anonynomous mmap */
	119	};
	120
	121	/*
	122	* The type of object we are working on
	123	*/
	124	enum fio_filetype {
	125	FIO_TYPE_FILE = 1,
	126	FIO_TYPE_BD,
	127	FIO_TYPE_CHAR,
	128	};
	129
2866c82d	130	enum fio_ioengine_flags {
e9c047a0	131	FIO_SYNCIO = 1 << 0,
2866c82d JA	132	FIO_CPUIO = 1 << 1,
2866c82d JA	133	FIO_MMAPIO = 1 << 2,
e9c047a0 JA	134	};
e9c047a0 JA	135
53cdc686 JA	136	struct fio_file {
	137	/*
	138	* A file may not be a file descriptor, let the io engine decide
	139	*/
	140	union {
	141	unsigned long file_data;
	142	int fd;
	143	};
	144	char *file_name;
	145	void *mmap;
	146	unsigned long long file_size;
	147	unsigned long long real_file_size;
	148	unsigned long long file_offset;
	149	unsigned long long last_pos;
	150
	151	unsigned long *file_map;
	152	unsigned int num_maps;
	153	};
	154
e9c047a0 JA	155	/*
	156	* This describes a single thread/process executing a fio job.
	157	*/
ebac4655	158	struct thread_data {
e9c047a0	159	char name[32];
ef899b63	160	char *directory;
ebac4655 JA	161	char verror[80];
	162	pthread_t thread;
	163	int thread_number;
	164	int groupid;
e9c047a0	165	enum fio_filetype filetype;
53cdc686 JA	166	struct fio_file *files;
	167	unsigned int nr_files;
	168	unsigned int next_file;
ebac4655	169	int error;
ebac4655 JA	170	pid_t pid;
	171	char *orig_buffer;
	172	size_t orig_buffer_size;
	173	volatile int terminate;
	174	volatile int runstate;
e9c047a0	175	enum fio_ddir ddir;
3d60d1ed	176	unsigned int iomix;
ebac4655	177	unsigned int ioprio;
e9c047a0 JA	178
	179	unsigned char sequential;
	180	unsigned char odirect;
	181	unsigned char create_file;
	182	unsigned char invalidate_cache;
	183	unsigned char create_serialize;
	184	unsigned char create_fsync;
	185	unsigned char end_fsync;
	186	unsigned char sync_io;
	187	unsigned char verify;
	188	unsigned char use_thread;
	189	unsigned char do_disk_util;
	190	unsigned char override_sync;
9ebc27e1	191	unsigned char rand_repeatable;
e9c047a0	192
ebac4655 JA	193	unsigned int bs;
	194	unsigned int min_bs;
	195	unsigned int max_bs;
ebac4655 JA	196	unsigned int thinktime;
	197	unsigned int fsync_blocks;
	198	unsigned int start_delay;
906c8d75	199	unsigned long timeout;
ebac4655	200	unsigned int overwrite;
ebac4655	201	unsigned int bw_avg_time;
ebac4655	202	unsigned int loops;
20dc95c4 JA	203	unsigned long long zone_size;
20dc95c4 JA	204	unsigned long long zone_skip;
e9c047a0	205	enum fio_memtype mem_type;
ebac4655 JA	206	unsigned int stonewall;
ebac4655 JA	207	unsigned int numjobs;
ebac4655 JA	208	unsigned int iodepth;
ebac4655 JA	209	os_cpu_mask_t cpumask;
aea47d44	210	unsigned int iolog;
843a7413 JA	211	unsigned int read_iolog;
843a7413 JA	212	unsigned int write_iolog;
a6ccc7be JA	213	unsigned int rwmixcycle;
a6ccc7be JA	214	unsigned int rwmixread;
b6f4d880	215	unsigned int nice;
aea47d44	216
ef899b63	217	char *iolog_file;
843a7413 JA	218	void *iolog_buf;
843a7413 JA	219	FILE *iolog_f;
ebac4655	220
da86774e	221	char *sysfs_root;
da86774e JA	222	char *ioscheduler;
da86774e JA	223
6dfd46b9 JA	224	os_random_state_t bsrange_state;
6dfd46b9 JA	225	os_random_state_t verify_state;
ebac4655 JA	226
	227	int shm_id;
	228
e9c047a0 JA	229	/*
	230	* IO engine hooks, contains everything needed to submit an io_u
	231	* to any of the available IO engines.
	232	*/
2866c82d	233	struct ioengine_ops *io_ops;
ebac4655	234
e9c047a0 JA	235	/*
	236	* Current IO depth and list of free and busy io_u's.
	237	*/
ebac4655 JA	238	unsigned int cur_depth;
	239	struct list_head io_u_freelist;
	240	struct list_head io_u_busylist;
	241
e9c047a0 JA	242	/*
	243	* Rate state
	244	*/
ebac4655 JA	245	unsigned int rate;
	246	unsigned int ratemin;
	247	unsigned int ratecycle;
	248	unsigned long rate_usec_cycle;
	249	long rate_pending_usleep;
	250	unsigned long rate_bytes;
	251	struct timeval lastrate;
	252
	253	unsigned long runtime[2]; /* msec */
	254	unsigned long long io_size;
53cdc686 JA	255	unsigned long long total_file_size;
53cdc686 JA	256	unsigned long long start_offset;
ebac4655 JA	257	unsigned long long total_io_size;
ebac4655 JA	258
9104f874 JA	259	unsigned long long io_blocks[2];
	260	unsigned long long io_bytes[2];
	261	unsigned long long zone_bytes;
	262	unsigned long long this_io_bytes[2];
bbfd6b00	263	volatile int mutex;
ebac4655	264
e9c047a0 JA	265	/*
	266	* State for random io, a bitmap of blocks done vs not done
	267	*/
6dfd46b9	268	os_random_state_t random_state;
ebac4655	269
b990b5c0 JA	270	/*
	271	* CPU "io" cycle burner
	272	*/
	273	unsigned int cpuload;
	274	unsigned int cpucycle;
	275
ebac4655 JA	276	/*
	277	* bandwidth and latency stats
	278	*/
	279	struct io_stat clat_stat[2]; /* completion latency */
	280	struct io_stat slat_stat[2]; /* submission latency */
	281	struct io_stat bw_stat[2]; /* bandwidth stats */
	282
9104f874	283	unsigned long long stat_io_bytes[2];
ebac4655 JA	284	struct timeval stat_sample_time[2];
	285
	286	struct io_log *slat_log;
	287	struct io_log *clat_log;
	288	struct io_log *bw_log;
	289
	290	struct timeval start; /* start of this loop */
	291	struct timeval epoch; /* time job was started */
	292
e9c047a0 JA	293	/*
	294	* fio system usage accounting
	295	*/
ebac4655 JA	296	struct rusage ru_start;
	297	struct rusage ru_end;
	298	unsigned long usr_time;
	299	unsigned long sys_time;
	300	unsigned long ctx;
	301
e9c047a0 JA	302	/*
	303	* read/write mixed workload state
	304	*/
6dfd46b9	305	os_random_state_t rwmix_state;
a6ccc7be	306	struct timeval rwmix_switch;
e9c047a0	307	enum fio_ddir rwmix_ddir;
a6ccc7be	308
4e0ba8af JA	309	/*
	310	* Pre-run and post-run shell
	311	*/
	312	char *exec_prerun;
	313	char *exec_postrun;
	314
e9c047a0 JA	315	/*
	316	* IO historic logs
	317	*/
ebac4655	318	struct list_head io_hist_list;
aea47d44	319	struct list_head io_log_list;
ebac4655 JA	320	};
ebac4655 JA	321
b990b5c0	322	#define __td_verror(td, err, msg) \
ebac4655 JA	323	do { \
	324	int e = (err); \
	325	(td)->error = e; \
b990b5c0	326	snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
ebac4655 JA	327	} while (0)
ebac4655 JA	328
b990b5c0 JA	329
	330	#define td_verror(td, err) __td_verror((td), (err), strerror((err)))
	331	#define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
	332
b1ff3403 JA	333	extern struct io_u __get_io_u(struct thread_data );
b1ff3403 JA	334	extern void put_io_u(struct thread_data , struct io_u );
ebac4655 JA	335
	336	extern int rate_quit;
	337	extern int write_lat_log;
	338	extern int write_bw_log;
	339	extern int exitall_on_terminate;
	340	extern int thread_number;
	341	extern int shm_id;
	342	extern int groupid;
c6ae0a5b	343	extern int terse_output;
eb8bbf48 JA	344	extern FILE *f_out;
eb8bbf48 JA	345	extern FILE *f_err;
c1d5725e	346	extern char *fio_inst_prefix;
53cdc686	347	extern int temp_stall_ts;
ebac4655 JA	348
	349	extern struct thread_data *threads;
	350
ebac4655 JA	351	#define td_read(td) ((td)->ddir == DDIR_READ)
ebac4655 JA	352	#define td_write(td) ((td)->ddir == DDIR_WRITE)
3d60d1ed	353	#define td_rw(td) ((td)->iomix != 0)
ebac4655 JA	354
ebac4655 JA	355	#define BLOCKS_PER_MAP (8 * sizeof(long))
53cdc686 JA	356	#define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->min_bs))
	357	#define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
	358	#define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
ebac4655 JA	359
	360	#define MAX_JOBS (1024)
	361
	362	struct disk_util_stat {
	363	unsigned ios[2];
	364	unsigned merges[2];
	365	unsigned long long sectors[2];
	366	unsigned ticks[2];
	367	unsigned io_ticks;
	368	unsigned time_in_queue;
	369	};
	370
	371	struct disk_util {
	372	struct list_head list;
	373
	374	char *name;
	375	char path[256];
	376	dev_t dev;
	377
	378	struct disk_util_stat dus;
	379	struct disk_util_stat last_dus;
	380
	381	unsigned long msec;
	382	struct timeval time;
	383	};
	384
	385	struct io_completion_data {
	386	int nr; /* input */
	387
	388	int error; /* output */
	389	unsigned long bytes_done[2]; /* output */
	390	};
	391
	392	#define DISK_UTIL_MSEC (250)
	393
6a0106a0 JA	394	#ifndef min
	395	#define min(a, b) ((a) < (b) ? (a) : (b))
	396	#endif
	397
6796209a JA	398	/*
	399	* Log exports
	400	*/
	401	extern int read_iolog_get(struct thread_data , struct io_u );
	402	extern void write_iolog_put(struct thread_data , struct io_u );
	403	extern int init_iolog(struct thread_data *td);
	404	extern void log_io_piece(struct thread_data , struct io_u );
	405	extern void prune_io_piece_log(struct thread_data *);
	406	extern void write_iolog_close(struct thread_data *);
	407
	408	/*
	409	* Logging
	410	*/
	411	extern void add_clat_sample(struct thread_data *, int, unsigned long);
	412	extern void add_slat_sample(struct thread_data *, int, unsigned long);
	413	extern void add_bw_sample(struct thread_data *, int);
	414	extern void show_run_stats(void);
	415	extern void init_disk_util(struct thread_data *);
	416	extern void update_rusage_stat(struct thread_data *);
	417	extern void update_io_ticks(void);
	418	extern void disk_util_timer_arm(void);
8914a9d8 JA	419	extern void setup_log(struct io_log **);
	420	extern void finish_log(struct thread_data , struct io_log , const char *);
	421	extern int setup_rate(struct thread_data *);
6796209a JA	422
	423	/*
	424	* Time functions
	425	*/
	426	extern unsigned long utime_since(struct timeval , struct timeval );
	427	extern unsigned long mtime_since(struct timeval , struct timeval );
	428	extern unsigned long mtime_since_now(struct timeval *);
	429	extern unsigned long time_since_now(struct timeval *);
b990b5c0	430	extern void __usec_sleep(unsigned int);
6796209a JA	431	extern void usec_sleep(struct thread_data *, unsigned long);
	432	extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
	433
8914a9d8 JA	434	/*
	435	* Init functions
	436	*/
	437	extern int parse_options(int, char **);
	438	extern int init_random_state(struct thread_data *);
	439
53cdc686 JA	440	/*
	441	* File setup/shutdown
	442	*/
	443	extern void close_files(struct thread_data *);
	444	extern int setup_files(struct thread_data *);
	445
bbfd6b00 JA	446	/*
	447	* This is a pretty crappy semaphore implementation, but with the use that fio
	448	* has (just signalling start/go conditions), it doesn't have to be better.
	449	* Naturally this would not work for any type of contended semaphore or
	450	* for real locking.
	451	*/
1056eaad	452	static inline void fio_sem_init(volatile int *sem, int val)
bbfd6b00 JA	453	{
	454	*sem = val;
	455	}
	456
1056eaad	457	static inline void fio_sem_down(volatile int *sem)
bbfd6b00 JA	458	{
	459	while (*sem == 0)
	460	usleep(10000);
	461
	462	(*sem)--;
	463	}
	464
1056eaad	465	static inline void fio_sem_up(volatile int *sem)
bbfd6b00 JA	466	{
	467	(*sem)++;
	468	}
	469
3b70d7e5 JA	470	/*
	471	* If logging output to a file, stderr should go to both stderr and f_err
	472	*/
	473	#define log_err(args...) do { \
	474	fprintf(f_err, ##args); \
	475	if (f_err != stderr) \
	476	fprintf(stderr, ##args); \
	477	} while (0)
	478
2866c82d JA	479	struct ioengine_ops {
	480	char name[16];
	481	int version;
	482	int flags;
ea2877a4	483	int (setup)(struct thread_data );
2866c82d JA	484	int (init)(struct thread_data );
	485	int (prep)(struct thread_data , struct io_u *);
	486	int (queue)(struct thread_data , struct io_u *);
	487	int (getevents)(struct thread_data , int, int, struct timespec *);
	488	struct io_u (event)(struct thread_data *, int);
	489	int (cancel)(struct thread_data , struct io_u *);
	490	void (cleanup)(struct thread_data );
53cdc686	491	int (sync)(struct thread_data , struct fio_file *);
2866c82d JA	492	void *data;
	493	void *dlhandle;
	494	};
	495
53cdc686	496	#define FIO_IOOPS_VERSION 2
2866c82d JA	497
	498	extern struct ioengine_ops load_ioengine(struct thread_data , char *);
	499	extern void close_ioengine(struct thread_data *);
	500
	501	/*
	502	* Mark unused variables passed to ops functions as unused, to silence gcc
	503	*/
	504	#define fio_unused __attribute((__unused__))
	505
53cdc686 JA	506	#define for_each_file(td, f, i) \
	507	for ((i) = 0, (f) = &(td)->files[(i)]; (i) < (td)->nr_files; (i)++, (f) = &(td)->files[(i)])
	508
ebac4655	509	#endif