[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 <string.h>
#include <inttypes.h>
#include <assert.h>

#include "compiler/compiler.h"
#include "thread_options.h"
#include "flist.h"
#include "fifo.h"
#include "arch/arch.h"
#include "os/os.h"
#include "mutex.h"
#include "log.h"
#include "debug.h"
#include "file.h"
#include "io_ddir.h"
#include "ioengine.h"
#include "iolog.h"
#include "helpers.h"
#include "options.h"
#include "profile.h"
#include "time.h"
#include "gettime.h"
#include "lib/getopt.h"
#include "lib/rand.h"
#include "lib/rbtree.h"
#include "client.h"
#include "server.h"
#include "stat.h"
#include "flow.h"

#ifdef CONFIG_SOLARISAIO
#include <sys/asynch.h>
#endif

#ifdef CONFIG_LIBNUMA
#include <linux/mempolicy.h>
#include <numa.h>

/*
 * "local" is pseudo-policy
 */
#define MPOL_LOCAL MPOL_MAX
#endif

/*
 * offset generator types
 */
enum {
	RW_SEQ_SEQ	= 0,
	RW_SEQ_IDENT,
};

enum {
	TD_F_VER_BACKLOG	= 1,
	TD_F_TRIM_BACKLOG	= 2,
	TD_F_READ_IOLOG		= 4,
	TD_F_REFILL_BUFFERS	= 8,
	TD_F_SCRAMBLE_BUFFERS	= 16,
	TD_F_VER_NONE		= 32,
	TD_F_PROFILE_OPS	= 64,
};

enum {
	FIO_RAND_BS_OFF		= 0,
	FIO_RAND_VER_OFF,
	FIO_RAND_MIX_OFF,
	FIO_RAND_FILE_OFF,
	FIO_RAND_BLOCK_OFF,
	FIO_RAND_FILE_SIZE_OFF,
	FIO_RAND_TRIM_OFF,
	FIO_RAND_BUF_OFF,
	FIO_RAND_NR_OFFS,
};

/*
 * This describes a single thread/process executing a fio job.
 */
struct thread_data {
	struct thread_options o;
	unsigned long flags;
	void *eo;
	char verror[FIO_VERROR_SIZE];
	pthread_t thread;
	unsigned int thread_number;
	unsigned int groupid;
	struct thread_stat ts;

	int client_type;

	struct io_log *slat_log;
	struct io_log *clat_log;
	struct io_log *lat_log;
	struct io_log *bw_log;
	struct io_log *iops_log;

	uint64_t stat_io_bytes[DDIR_RWDIR_CNT];
	struct timeval bw_sample_time;

	uint64_t stat_io_blocks[DDIR_RWDIR_CNT];
	struct timeval iops_sample_time;

	volatile int update_rusage;
	struct fio_mutex *rusage_sem;
	struct rusage ru_start;
	struct rusage ru_end;

	struct fio_file **files;
	unsigned char *file_locks;
	unsigned int files_size;
	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;
		struct frand_state __next_file_state;
	};
	int error;
	int sig;
	int done;
	pid_t pid;
	char *orig_buffer;
	size_t orig_buffer_size;
	volatile int terminate;
	volatile int runstate;
	unsigned int last_was_sync;
	enum fio_ddir last_ddir;

	int mmapfd;

	void *iolog_buf;
	FILE *iolog_f;

	char *sysfs_root;

	unsigned long rand_seeds[FIO_RAND_NR_OFFS];

	union {
		os_random_state_t bsrange_state;
		struct frand_state __bsrange_state;
	};
	union {
		os_random_state_t verify_state;
		struct frand_state __verify_state;
	};
	union {
		os_random_state_t trim_state;
		struct frand_state __trim_state;
	};

	struct frand_state buf_state;

	unsigned int verify_batch;
	unsigned int trim_batch;

	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;

	/*
	 * Queue depth of io_u's that fio MIGHT do
	 */
	unsigned int cur_depth;

	/*
	 * io_u's about to be committed
	 */
	unsigned int io_u_queued;

	/*
	 * io_u's submitted but not completed yet
	 */
	unsigned int io_u_in_flight;

	/*
	 * List of free and busy io_u's
	 */
	struct flist_head io_u_freelist;
	struct flist_head io_u_busylist;
	struct flist_head io_u_requeues;
	pthread_mutex_t io_u_lock;
	pthread_cond_t free_cond;

	/*
	 * async verify offload
	 */
	struct flist_head verify_list;
	pthread_t *verify_threads;
	unsigned int nr_verify_threads;
	pthread_cond_t verify_cond;
	int verify_thread_exit;

	/*
	 * Rate state
	 */
	uint64_t rate_bps[DDIR_RWDIR_CNT];
	long rate_pending_usleep[DDIR_RWDIR_CNT];
	unsigned long rate_bytes[DDIR_RWDIR_CNT];
	unsigned long rate_blocks[DDIR_RWDIR_CNT];
	struct timeval lastrate[DDIR_RWDIR_CNT];

	uint64_t total_io_size;
	uint64_t fill_device_size;

	unsigned long io_issues[DDIR_RWDIR_CNT];
	uint64_t io_blocks[DDIR_RWDIR_CNT];
	uint64_t this_io_blocks[DDIR_RWDIR_CNT];
	uint64_t io_bytes[DDIR_RWDIR_CNT];
	uint64_t io_skip_bytes;
	uint64_t this_io_bytes[DDIR_RWDIR_CNT];
	uint64_t zone_bytes;
	struct fio_mutex *mutex;

	/*
	 * State for random io, a bitmap of blocks done vs not done
	 */
	union {
		os_random_state_t random_state;
		struct frand_state __random_state;
	};

	struct timeval start;	/* start of this loop */
	struct timeval epoch;	/* time job was started */
	struct timeval last_issue;
	struct timeval tv_cache;
	unsigned int tv_cache_nr;
	unsigned int tv_cache_mask;
	unsigned int ramp_time_over;

	/*
	 * read/write mixed workload state
	 */
	union {
		os_random_state_t rwmix_state;
		struct frand_state __rwmix_state;
	};
	unsigned long rwmix_issues;
	enum fio_ddir rwmix_ddir;
	unsigned int ddir_seq_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;
	unsigned long io_hist_len;

	/*
	 * For IO replaying
	 */
	struct flist_head io_log_list;

	/*
	 * For tracking/handling discards
	 */
	struct flist_head trim_list;
	unsigned long trim_entries;

	struct flist_head next_rand_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;

	unsigned int sync_file_range_nr;

	/*
	 * For generating file sizes
	 */
	union {
		os_random_state_t file_size_state;
		struct frand_state __file_size_state;
	};

	/*
	 * Error counts
	 */
	unsigned int total_err_count;
	int first_error;

	struct fio_flow *flow;

	/*
	 * Can be overloaded by profiles
	 */
	struct prof_io_ops prof_io_ops;
	void *prof_data;

	void *pinned_mem;
};

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


#define td_clear_error(td)		\
	(td)->error = 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))

#define __fio_stringify_1(x)	#x
#define __fio_stringify(x)	__fio_stringify_1(x)

extern int exitall_on_terminate;
extern unsigned int thread_number;
extern unsigned int stat_number;
extern int shm_id;
extern int groupid;
extern int output_format;
extern int temp_stall_ts;
extern uintptr_t page_mask, page_size;
extern int read_only;
extern int eta_print;
extern int eta_new_line;
extern unsigned long done_secs;
extern char *job_section;
extern int fio_gtod_offload;
extern int fio_gtod_cpu;
extern enum fio_cs fio_clock_source;
extern int fio_clock_source_set;
extern int warnings_fatal;
extern int terse_version;
extern int is_backend;
extern int nr_clients;
extern int log_syslog;
extern const char fio_version_string[];

extern struct thread_data *threads;

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 REAL_MAX_JOBS		2048

static inline int should_fsync(struct thread_data *td)
{
	if (td->last_was_sync)
		return 0;
	if (td_write(td) || td_rw(td) || td->o.override_sync)
		return 1;

	return 0;
}

/*
 * Init/option functions
 */
extern int __must_check fio_init_options(void);
extern int __must_check parse_options(int, char **);
extern int parse_jobs_ini(char *, int, int, int);
extern int parse_cmd_line(int, char **, int);
extern int fio_backend(void);
extern void reset_fio_state(void);
extern void clear_io_state(struct thread_data *);
extern int fio_options_parse(struct thread_data *, char **, int);
extern void fio_keywords_init(void);
extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
extern int fio_cmd_ioengine_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_set_ioengine_opts(struct option *long_options, struct thread_data *td);
extern void fio_options_dup_and_init(struct option *);
extern void fio_options_mem_dupe(struct thread_data *);
extern void options_mem_dupe(void *data, struct fio_option *options);
extern void td_fill_rand_seeds(struct thread_data *);
extern void add_job_opts(const char **, int);
extern char *num2str(unsigned long, int, int, int, int);
extern int ioengine_load(struct thread_data *);

extern uintptr_t page_mask;
extern uintptr_t page_size;
extern int initialize_fio(char *envp[]);

#define FIO_GETOPT_JOB		0x89000000
#define FIO_GETOPT_IOENGINE	0x98000000
#define FIO_NR_OPTIONS		(FIO_MAX_OPTS + 128)

/*
 * ETA/status stuff
 */
extern void print_thread_status(void);
extern void print_status_init(int);
extern char *fio_uint_to_kmg(unsigned int val);

/*
 * 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_SETTING_UP,
	TD_RUNNING,
	TD_PRE_READING,
	TD_VERIFYING,
	TD_FSYNCING,
	TD_EXITED,
	TD_REAPED,
};

extern void td_set_runstate(struct thread_data *, int);
#define TERMINATE_ALL		(-1)
extern void fio_terminate_threads(int);

/*
 * Memory helpers
 */
extern int __must_check fio_pin_memory(struct thread_data *);
extern void fio_unpin_memory(struct thread_data *);
extern int __must_check allocate_io_mem(struct thread_data *);
extern void free_io_mem(struct thread_data *);
extern void free_threads_shm(void);

/*
 * Reset stats after ramp time completes
 */
extern void reset_all_stats(struct thread_data *);

/*
 * blktrace support
 */
#ifdef FIO_HAVE_BLKTRACE
extern int is_blktrace(const char *);
extern int load_blktrace(struct thread_data *, const char *);
#endif

#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_set_runstate((td), TD_EXITED);	\
		(td)->error = EFAULT;		\
		*__foo = 0;			\
	}	\
} while (0)

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;
}

static inline int __should_check_rate(struct thread_data *td,
				      enum fio_ddir ddir)
{
	struct thread_options *o = &td->o;

	/*
	 * If some rate setting was given, we need to check it
	 */
	if (o->rate[ddir] || o->ratemin[ddir] || o->rate_iops[ddir] ||
	    o->rate_iops_min[ddir])
		return 1;

	return 0;
}

static inline int should_check_rate(struct thread_data *td,
				    uint64_t *bytes_done)
{
	int ret = 0;

	if (bytes_done[DDIR_READ])
		ret |= __should_check_rate(td, DDIR_READ);
	if (bytes_done[DDIR_WRITE])
		ret |= __should_check_rate(td, DDIR_WRITE);
	if (bytes_done[DDIR_TRIM])
		ret |= __should_check_rate(td, DDIR_TRIM);

	return ret;
}

static inline unsigned int td_max_bs(struct thread_data *td)
{
	unsigned int max_bs;

	max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
	return max(td->o.max_bs[DDIR_TRIM], max_bs);
}

static inline int is_power_of_2(unsigned int val)
{
	return (val != 0 && ((val & (val - 1)) == 0));
}

/*
 * We currently only need to do locking if we have verifier threads
 * accessing our internal structures too
 */
static inline void td_io_u_lock(struct thread_data *td)
{
	if (td->o.verify_async)
		pthread_mutex_lock(&td->io_u_lock);
}

static inline void td_io_u_unlock(struct thread_data *td)
{
	if (td->o.verify_async)
		pthread_mutex_unlock(&td->io_u_lock);
}

static inline void td_io_u_free_notify(struct thread_data *td)
{
	if (td->o.verify_async)
		pthread_cond_signal(&td->free_cond);
}

extern const char *fio_get_arch_string(int);
extern const char *fio_get_os_string(int);

#define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))

enum {
	FIO_OUTPUT_TERSE	= 0,
	FIO_OUTPUT_JSON,
	FIO_OUTPUT_NORMAL,
};

enum {
	FIO_RAND_DIST_RANDOM	= 0,
	FIO_RAND_DIST_ZIPF,
	FIO_RAND_DIST_PARETO,
};

enum {
	FIO_RAND_GEN_TAUSWORTHE = 0,
	FIO_RAND_GEN_LFSR,
};

#endif
Commit	Line	Data
	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 <errno.h>
	10	#include <stdlib.h>
	11	#include <stdio.h>
	12	#include <unistd.h>
	13	#include <string.h>
	14	#include <inttypes.h>
	15	#include <assert.h>
	16
	17	#include "compiler/compiler.h"
	18	#include "thread_options.h"
	19	#include "flist.h"
	20	#include "fifo.h"
	21	#include "arch/arch.h"
	22	#include "os/os.h"
	23	#include "mutex.h"
	24	#include "log.h"
	25	#include "debug.h"
	26	#include "file.h"
	27	#include "io_ddir.h"
	28	#include "ioengine.h"
	29	#include "iolog.h"
	30	#include "helpers.h"
	31	#include "options.h"
	32	#include "profile.h"
	33	#include "time.h"
	34	#include "gettime.h"
	35	#include "lib/getopt.h"
	36	#include "lib/rand.h"
	37	#include "lib/rbtree.h"
	38	#include "client.h"
	39	#include "server.h"
	40	#include "stat.h"
	41	#include "flow.h"
	42
	43	#ifdef CONFIG_SOLARISAIO
	44	#include <sys/asynch.h>
	45	#endif
	46
	47	#ifdef CONFIG_LIBNUMA
	48	#include <linux/mempolicy.h>
	49	#include <numa.h>
	50
	51	/*
	52	* "local" is pseudo-policy
	53	*/
	54	#define MPOL_LOCAL MPOL_MAX
	55	#endif
	56
	57	/*
	58	* offset generator types
	59	*/
	60	enum {
	61	RW_SEQ_SEQ = 0,
	62	RW_SEQ_IDENT,
	63	};
	64
	65	enum {
	66	TD_F_VER_BACKLOG = 1,
	67	TD_F_TRIM_BACKLOG = 2,
	68	TD_F_READ_IOLOG = 4,
	69	TD_F_REFILL_BUFFERS = 8,
	70	TD_F_SCRAMBLE_BUFFERS = 16,
	71	TD_F_VER_NONE = 32,
	72	TD_F_PROFILE_OPS = 64,
	73	};
	74
	75	enum {
	76	FIO_RAND_BS_OFF = 0,
	77	FIO_RAND_VER_OFF,
	78	FIO_RAND_MIX_OFF,
	79	FIO_RAND_FILE_OFF,
	80	FIO_RAND_BLOCK_OFF,
	81	FIO_RAND_FILE_SIZE_OFF,
	82	FIO_RAND_TRIM_OFF,
	83	FIO_RAND_BUF_OFF,
	84	FIO_RAND_NR_OFFS,
	85	};
	86
	87	/*
	88	* This describes a single thread/process executing a fio job.
	89	*/
	90	struct thread_data {
	91	struct thread_options o;
	92	unsigned long flags;
	93	void *eo;
	94	char verror[FIO_VERROR_SIZE];
	95	pthread_t thread;
	96	unsigned int thread_number;
	97	unsigned int groupid;
	98	struct thread_stat ts;
	99
	100	int client_type;
	101
	102	struct io_log *slat_log;
	103	struct io_log *clat_log;
	104	struct io_log *lat_log;
	105	struct io_log *bw_log;
	106	struct io_log *iops_log;
	107
	108	uint64_t stat_io_bytes[DDIR_RWDIR_CNT];
	109	struct timeval bw_sample_time;
	110
	111	uint64_t stat_io_blocks[DDIR_RWDIR_CNT];
	112	struct timeval iops_sample_time;
	113
	114	volatile int update_rusage;
	115	struct fio_mutex *rusage_sem;
	116	struct rusage ru_start;
	117	struct rusage ru_end;
	118
	119	struct fio_file **files;
	120	unsigned char *file_locks;
	121	unsigned int files_size;
	122	unsigned int files_index;
	123	unsigned int nr_open_files;
	124	unsigned int nr_done_files;
	125	unsigned int nr_normal_files;
	126	union {
	127	unsigned int next_file;
	128	os_random_state_t next_file_state;
	129	struct frand_state __next_file_state;
	130	};
	131	int error;
	132	int sig;
	133	int done;
	134	pid_t pid;
	135	char *orig_buffer;
	136	size_t orig_buffer_size;
	137	volatile int terminate;
	138	volatile int runstate;
	139	unsigned int last_was_sync;
	140	enum fio_ddir last_ddir;
	141
	142	int mmapfd;
	143
	144	void *iolog_buf;
	145	FILE *iolog_f;
	146
	147	char *sysfs_root;
	148
	149	unsigned long rand_seeds[FIO_RAND_NR_OFFS];
	150
	151	union {
	152	os_random_state_t bsrange_state;
	153	struct frand_state __bsrange_state;
	154	};
	155	union {
	156	os_random_state_t verify_state;
	157	struct frand_state __verify_state;
	158	};
	159	union {
	160	os_random_state_t trim_state;
	161	struct frand_state __trim_state;
	162	};
	163
	164	struct frand_state buf_state;
	165
	166	unsigned int verify_batch;
	167	unsigned int trim_batch;
	168
	169	int shm_id;
	170
	171	/*
	172	* IO engine hooks, contains everything needed to submit an io_u
	173	* to any of the available IO engines.
	174	*/
	175	struct ioengine_ops *io_ops;
	176
	177	/*
	178	* Queue depth of io_u's that fio MIGHT do
	179	*/
	180	unsigned int cur_depth;
	181
	182	/*
	183	* io_u's about to be committed
	184	*/
	185	unsigned int io_u_queued;
	186
	187	/*
	188	* io_u's submitted but not completed yet
	189	*/
	190	unsigned int io_u_in_flight;
	191
	192	/*
	193	* List of free and busy io_u's
	194	*/
	195	struct flist_head io_u_freelist;
	196	struct flist_head io_u_busylist;
	197	struct flist_head io_u_requeues;
	198	pthread_mutex_t io_u_lock;
	199	pthread_cond_t free_cond;
	200
	201	/*
	202	* async verify offload
	203	*/
	204	struct flist_head verify_list;
	205	pthread_t *verify_threads;
	206	unsigned int nr_verify_threads;
	207	pthread_cond_t verify_cond;
	208	int verify_thread_exit;
	209
	210	/*
	211	* Rate state
	212	*/
	213	uint64_t rate_bps[DDIR_RWDIR_CNT];
	214	long rate_pending_usleep[DDIR_RWDIR_CNT];
	215	unsigned long rate_bytes[DDIR_RWDIR_CNT];
	216	unsigned long rate_blocks[DDIR_RWDIR_CNT];
	217	struct timeval lastrate[DDIR_RWDIR_CNT];
	218
	219	uint64_t total_io_size;
	220	uint64_t fill_device_size;
	221
	222	unsigned long io_issues[DDIR_RWDIR_CNT];
	223	uint64_t io_blocks[DDIR_RWDIR_CNT];
	224	uint64_t this_io_blocks[DDIR_RWDIR_CNT];
	225	uint64_t io_bytes[DDIR_RWDIR_CNT];
	226	uint64_t io_skip_bytes;
	227	uint64_t this_io_bytes[DDIR_RWDIR_CNT];
	228	uint64_t zone_bytes;
	229	struct fio_mutex *mutex;
	230
	231	/*
	232	* State for random io, a bitmap of blocks done vs not done
	233	*/
	234	union {
	235	os_random_state_t random_state;
	236	struct frand_state __random_state;
	237	};
	238
	239	struct timeval start; /* start of this loop */
	240	struct timeval epoch; /* time job was started */
	241	struct timeval last_issue;
	242	struct timeval tv_cache;
	243	unsigned int tv_cache_nr;
	244	unsigned int tv_cache_mask;
	245	unsigned int ramp_time_over;
	246
	247	/*
	248	* read/write mixed workload state
	249	*/
	250	union {
	251	os_random_state_t rwmix_state;
	252	struct frand_state __rwmix_state;
	253	};
	254	unsigned long rwmix_issues;
	255	enum fio_ddir rwmix_ddir;
	256	unsigned int ddir_seq_nr;
	257
	258	/*
	259	* IO history logs for verification. We use a tree for sorting,
	260	* if we are overwriting. Otherwise just use a fifo.
	261	*/
	262	struct rb_root io_hist_tree;
	263	struct flist_head io_hist_list;
	264	unsigned long io_hist_len;
	265
	266	/*
	267	* For IO replaying
	268	*/
	269	struct flist_head io_log_list;
	270
	271	/*
	272	* For tracking/handling discards
	273	*/
	274	struct flist_head trim_list;
	275	unsigned long trim_entries;
	276
	277	struct flist_head next_rand_list;
	278
	279	/*
	280	* for fileservice, how often to switch to a new file
	281	*/
	282	unsigned int file_service_nr;
	283	unsigned int file_service_left;
	284	struct fio_file *file_service_file;
	285
	286	unsigned int sync_file_range_nr;
	287
	288	/*
	289	* For generating file sizes
	290	*/
	291	union {
	292	os_random_state_t file_size_state;
	293	struct frand_state __file_size_state;
	294	};
	295
	296	/*
	297	* Error counts
	298	*/
	299	unsigned int total_err_count;
	300	int first_error;
	301
	302	struct fio_flow *flow;
	303
	304	/*
	305	* Can be overloaded by profiles
	306	*/
	307	struct prof_io_ops prof_io_ops;
	308	void *prof_data;
	309
	310	void *pinned_mem;
	311	};
	312
	313	/*
	314	* when should interactive ETA output be generated
	315	*/
	316	enum {
	317	FIO_ETA_AUTO,
	318	FIO_ETA_ALWAYS,
	319	FIO_ETA_NEVER,
	320	};
	321
	322	#define __td_verror(td, err, msg, func) \
	323	do { \
	324	int e = (err); \
	325	if ((td)->error) \
	326	break; \
	327	(td)->error = e; \
	328	if (!(td)->first_error) \
	329	snprintf(td->verror, sizeof(td->verror), "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
	330	} while (0)
	331
	332
	333	#define td_clear_error(td) \
	334	(td)->error = 0;
	335	#define td_verror(td, err, func) \
	336	__td_verror((td), (err), strerror((err)), (func))
	337	#define td_vmsg(td, err, msg, func) \
	338	__td_verror((td), (err), (msg), (func))
	339
	340	#define __fio_stringify_1(x) #x
	341	#define __fio_stringify(x) __fio_stringify_1(x)
	342
	343	extern int exitall_on_terminate;
	344	extern unsigned int thread_number;
	345	extern unsigned int stat_number;
	346	extern int shm_id;
	347	extern int groupid;
	348	extern int output_format;
	349	extern int temp_stall_ts;
	350	extern uintptr_t page_mask, page_size;
	351	extern int read_only;
	352	extern int eta_print;
	353	extern int eta_new_line;
	354	extern unsigned long done_secs;
	355	extern char *job_section;
	356	extern int fio_gtod_offload;
	357	extern int fio_gtod_cpu;
	358	extern enum fio_cs fio_clock_source;
	359	extern int fio_clock_source_set;
	360	extern int warnings_fatal;
	361	extern int terse_version;
	362	extern int is_backend;
	363	extern int nr_clients;
	364	extern int log_syslog;
	365	extern const char fio_version_string[];
	366
	367	extern struct thread_data *threads;
	368
	369	static inline void fio_ro_check(struct thread_data td, struct io_u io_u)
	370	{
	371	assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
	372	}
	373
	374	#define REAL_MAX_JOBS 2048
	375
	376	static inline int should_fsync(struct thread_data *td)
	377	{
	378	if (td->last_was_sync)
	379	return 0;
	380	if (td_write(td) \|\| td_rw(td) \|\| td->o.override_sync)
	381	return 1;
	382
	383	return 0;
	384	}
	385
	386	/*
	387	* Init/option functions
	388	*/
	389	extern int __must_check fio_init_options(void);
	390	extern int __must_check parse_options(int, char **);
	391	extern int parse_jobs_ini(char *, int, int, int);
	392	extern int parse_cmd_line(int, char **, int);
	393	extern int fio_backend(void);
	394	extern void reset_fio_state(void);
	395	extern void clear_io_state(struct thread_data *);
	396	extern int fio_options_parse(struct thread_data , char *, int);
	397	extern void fio_keywords_init(void);
	398	extern int fio_cmd_option_parse(struct thread_data , const char , char *);
	399	extern int fio_cmd_ioengine_option_parse(struct thread_data , const char , char *);
	400	extern void fio_fill_default_options(struct thread_data *);
	401	extern int fio_show_option_help(const char *);
	402	extern void fio_options_set_ioengine_opts(struct option long_options, struct thread_data td);
	403	extern void fio_options_dup_and_init(struct option *);
	404	extern void fio_options_mem_dupe(struct thread_data *);
	405	extern void options_mem_dupe(void data, struct fio_option options);
	406	extern void td_fill_rand_seeds(struct thread_data *);
	407	extern void add_job_opts(const char **, int);
	408	extern char *num2str(unsigned long, int, int, int, int);
	409	extern int ioengine_load(struct thread_data *);
	410
	411	extern uintptr_t page_mask;
	412	extern uintptr_t page_size;
	413	extern int initialize_fio(char *envp[]);
	414
	415	#define FIO_GETOPT_JOB 0x89000000
	416	#define FIO_GETOPT_IOENGINE 0x98000000
	417	#define FIO_NR_OPTIONS (FIO_MAX_OPTS + 128)
	418
	419	/*
	420	* ETA/status stuff
	421	*/
	422	extern void print_thread_status(void);
	423	extern void print_status_init(int);
	424	extern char *fio_uint_to_kmg(unsigned int val);
	425
	426	/*
	427	* Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
	428	* will never back again. It may cycle between running/verififying/fsyncing.
	429	* Once the thread reaches TD_EXITED, it is just waiting for the core to
	430	* reap it.
	431	*/
	432	enum {
	433	TD_NOT_CREATED = 0,
	434	TD_CREATED,
	435	TD_INITIALIZED,
	436	TD_RAMP,
	437	TD_SETTING_UP,
	438	TD_RUNNING,
	439	TD_PRE_READING,
	440	TD_VERIFYING,
	441	TD_FSYNCING,
	442	TD_EXITED,
	443	TD_REAPED,
	444	};
	445
	446	extern void td_set_runstate(struct thread_data *, int);
	447	#define TERMINATE_ALL (-1)
	448	extern void fio_terminate_threads(int);
	449
	450	/*
	451	* Memory helpers
	452	*/
	453	extern int __must_check fio_pin_memory(struct thread_data *);
	454	extern void fio_unpin_memory(struct thread_data *);
	455	extern int __must_check allocate_io_mem(struct thread_data *);
	456	extern void free_io_mem(struct thread_data *);
	457	extern void free_threads_shm(void);
	458
	459	/*
	460	* Reset stats after ramp time completes
	461	*/
	462	extern void reset_all_stats(struct thread_data *);
	463
	464	/*
	465	* blktrace support
	466	*/
	467	#ifdef FIO_HAVE_BLKTRACE
	468	extern int is_blktrace(const char *);
	469	extern int load_blktrace(struct thread_data , const char );
	470	#endif
	471
	472	#define for_each_td(td, i) \
	473	for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
	474	#define for_each_file(td, f, i) \
	475	if ((td)->files_index) \
	476	for ((i) = 0, (f) = (td)->files[0]; \
	477	(i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
	478	(i)++)
	479
	480	#define fio_assert(td, cond) do { \
	481	if (!(cond)) { \
	482	int *__foo = NULL; \
	483	fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
	484	td_set_runstate((td), TD_EXITED); \
	485	(td)->error = EFAULT; \
	486	*__foo = 0; \
	487	} \
	488	} while (0)
	489
	490	static inline int fio_fill_issue_time(struct thread_data *td)
	491	{
	492	if (td->o.read_iolog_file \|\|
	493	!td->o.disable_clat \|\| !td->o.disable_slat \|\| !td->o.disable_bw)
	494	return 1;
	495
	496	return 0;
	497	}
	498
	499	static inline int __should_check_rate(struct thread_data *td,
	500	enum fio_ddir ddir)
	501	{
	502	struct thread_options *o = &td->o;
	503
	504	/*
	505	* If some rate setting was given, we need to check it
	506	*/
	507	if (o->rate[ddir] \|\| o->ratemin[ddir] \|\| o->rate_iops[ddir] \|\|
	508	o->rate_iops_min[ddir])
	509	return 1;
	510
	511	return 0;
	512	}
	513
	514	static inline int should_check_rate(struct thread_data *td,
	515	uint64_t *bytes_done)
	516	{
	517	int ret = 0;
	518
	519	if (bytes_done[DDIR_READ])
	520	ret \|= __should_check_rate(td, DDIR_READ);
	521	if (bytes_done[DDIR_WRITE])
	522	ret \|= __should_check_rate(td, DDIR_WRITE);
	523	if (bytes_done[DDIR_TRIM])
	524	ret \|= __should_check_rate(td, DDIR_TRIM);
	525
	526	return ret;
	527	}
	528
	529	static inline unsigned int td_max_bs(struct thread_data *td)
	530	{
	531	unsigned int max_bs;
	532
	533	max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
	534	return max(td->o.max_bs[DDIR_TRIM], max_bs);
	535	}
	536
	537	static inline int is_power_of_2(unsigned int val)
	538	{
	539	return (val != 0 && ((val & (val - 1)) == 0));
	540	}
	541
	542	/*
	543	* We currently only need to do locking if we have verifier threads
	544	* accessing our internal structures too
	545	*/
	546	static inline void td_io_u_lock(struct thread_data *td)
	547	{
	548	if (td->o.verify_async)
	549	pthread_mutex_lock(&td->io_u_lock);
	550	}
	551
	552	static inline void td_io_u_unlock(struct thread_data *td)
	553	{
	554	if (td->o.verify_async)
	555	pthread_mutex_unlock(&td->io_u_lock);
	556	}
	557
	558	static inline void td_io_u_free_notify(struct thread_data *td)
	559	{
	560	if (td->o.verify_async)
	561	pthread_cond_signal(&td->free_cond);
	562	}
	563
	564	extern const char *fio_get_arch_string(int);
	565	extern const char *fio_get_os_string(int);
	566
	567	#define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))
	568
	569	enum {
	570	FIO_OUTPUT_TERSE = 0,
	571	FIO_OUTPUT_JSON,
	572	FIO_OUTPUT_NORMAL,
	573	};
	574
	575	enum {
	576	FIO_RAND_DIST_RANDOM = 0,
	577	FIO_RAND_DIST_ZIPF,
	578	FIO_RAND_DIST_PARETO,
	579	};
	580
	581	enum {
	582	FIO_RAND_GEN_TAUSWORTHE = 0,
	583	FIO_RAND_GEN_LFSR,
	584	};
	585
	586	#endif