[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>

struct thread_data;

#include "compiler/compiler.h"
#include "thread_options.h"
#include "flist.h"
#include "fifo.h"
#include "lib/rbtree.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 "client.h"
#include "server.h"
#include "stat.h"
#include "flow.h"

#ifdef FIO_HAVE_GUASI
#include <guasi.h>
#endif

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

#ifdef FIO_HAVE_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;

	struct rusage ru_start;
	struct rusage ru_end;

	struct fio_file **files;
	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
	 */
	unsigned long long 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];

	unsigned long long total_io_size;
	unsigned long long fill_device_size;

	unsigned long io_issues[DDIR_RWDIR_CNT];
	unsigned long long io_blocks[DDIR_RWDIR_CNT];
	unsigned long long this_io_blocks[DDIR_RWDIR_CNT];
	unsigned long long io_bytes[DDIR_RWDIR_CNT];
	unsigned long long io_skip_bytes;
	unsigned long long this_io_bytes[DDIR_RWDIR_CNT];
	unsigned long long 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;

	/*
	 * 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 {								\
		if ((td)->error)					\
			break;						\
		int e = (err);						\
		(td)->error = e;					\
		if (!(td)->first_error)					\
			snprintf(td->verror, sizeof(td->verror) - 1, "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 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 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN];

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 enum error_type_bit td_error_type(enum fio_ddir ddir, int err)
{
	if (err == EILSEQ)
		return ERROR_TYPE_VERIFY_BIT;
	if (ddir == DDIR_READ)
		return ERROR_TYPE_READ_BIT;
	return ERROR_TYPE_WRITE_BIT;
}

static int __NON_FATAL_ERR[] = {EIO, EILSEQ};
static inline int td_non_fatal_error(struct thread_data *td,
				     enum error_type_bit etype, int err)
{
	int i;
	if (!td->o.ignore_error[etype]) {
		td->o.ignore_error[etype] = __NON_FATAL_ERR;
		td->o.ignore_error_nr[etype] = sizeof(__NON_FATAL_ERR)
			/ sizeof(int);
	}

	if (!(td->o.continue_on_error & (1 << etype)))
		return 0;
	for (i = 0; i < td->o.ignore_error_nr[etype]; i++)
		if (td->o.ignore_error[etype][i] == err)
			return 1;
	return 0;
}

static inline void update_error_count(struct thread_data *td, int err)
{
	td->total_err_count++;
	if (td->total_err_count == 1)
		td->first_error = err;
}

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;
}

/*
 * 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);
extern int ioengine_load(struct thread_data *);

extern unsigned long page_mask;
extern unsigned long 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

/*
 * 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_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,
				    unsigned long *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 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	struct thread_data;
	18
	19	#include "compiler/compiler.h"
	20	#include "thread_options.h"
	21	#include "flist.h"
	22	#include "fifo.h"
	23	#include "lib/rbtree.h"
	24	#include "arch/arch.h"
	25	#include "os/os.h"
	26	#include "mutex.h"
	27	#include "log.h"
	28	#include "debug.h"
	29	#include "file.h"
	30	#include "io_ddir.h"
	31	#include "ioengine.h"
	32	#include "iolog.h"
	33	#include "helpers.h"
	34	#include "options.h"
	35	#include "profile.h"
	36	#include "time.h"
	37	#include "gettime.h"
	38	#include "lib/getopt.h"
	39	#include "lib/rand.h"
	40	#include "client.h"
	41	#include "server.h"
	42	#include "stat.h"
	43	#include "flow.h"
	44
	45	#ifdef FIO_HAVE_GUASI
	46	#include <guasi.h>
	47	#endif
	48
	49	#ifdef FIO_HAVE_SOLARISAIO
	50	#include <sys/asynch.h>
	51	#endif
	52
	53	#ifdef FIO_HAVE_LIBNUMA
	54	#include <linux/mempolicy.h>
	55	#include <numa.h>
	56
	57	/*
	58	* "local" is pseudo-policy
	59	*/
	60	#define MPOL_LOCAL MPOL_MAX
	61	#endif
	62
	63	/*
	64	* offset generator types
	65	*/
	66	enum {
	67	RW_SEQ_SEQ = 0,
	68	RW_SEQ_IDENT,
	69	};
	70
	71
	72	enum {
	73	TD_F_VER_BACKLOG = 1,
	74	TD_F_TRIM_BACKLOG = 2,
	75	TD_F_READ_IOLOG = 4,
	76	TD_F_REFILL_BUFFERS = 8,
	77	TD_F_SCRAMBLE_BUFFERS = 16,
	78	TD_F_VER_NONE = 32,
	79	TD_F_PROFILE_OPS = 64,
	80	};
	81
	82	enum {
	83	FIO_RAND_BS_OFF = 0,
	84	FIO_RAND_VER_OFF,
	85	FIO_RAND_MIX_OFF,
	86	FIO_RAND_FILE_OFF,
	87	FIO_RAND_BLOCK_OFF,
	88	FIO_RAND_FILE_SIZE_OFF,
	89	FIO_RAND_TRIM_OFF,
	90	FIO_RAND_BUF_OFF,
	91	FIO_RAND_NR_OFFS,
	92	};
	93
	94	/*
	95	* This describes a single thread/process executing a fio job.
	96	*/
	97	struct thread_data {
	98	struct thread_options o;
	99	unsigned long flags;
	100	void *eo;
	101	char verror[FIO_VERROR_SIZE];
	102	pthread_t thread;
	103	unsigned int thread_number;
	104	unsigned int groupid;
	105	struct thread_stat ts;
	106
	107	int client_type;
	108
	109	struct io_log *slat_log;
	110	struct io_log *clat_log;
	111	struct io_log *lat_log;
	112	struct io_log *bw_log;
	113	struct io_log *iops_log;
	114
	115	uint64_t stat_io_bytes[DDIR_RWDIR_CNT];
	116	struct timeval bw_sample_time;
	117
	118	uint64_t stat_io_blocks[DDIR_RWDIR_CNT];
	119	struct timeval iops_sample_time;
	120
	121	struct rusage ru_start;
	122	struct rusage ru_end;
	123
	124	struct fio_file **files;
	125	unsigned int files_size;
	126	unsigned int files_index;
	127	unsigned int nr_open_files;
	128	unsigned int nr_done_files;
	129	unsigned int nr_normal_files;
	130	union {
	131	unsigned int next_file;
	132	os_random_state_t next_file_state;
	133	struct frand_state __next_file_state;
	134	};
	135	int error;
	136	int sig;
	137	int done;
	138	pid_t pid;
	139	char *orig_buffer;
	140	size_t orig_buffer_size;
	141	volatile int terminate;
	142	volatile int runstate;
	143	unsigned int last_was_sync;
	144	enum fio_ddir last_ddir;
	145
	146	int mmapfd;
	147
	148	void *iolog_buf;
	149	FILE *iolog_f;
	150
	151	char *sysfs_root;
	152
	153	unsigned long rand_seeds[FIO_RAND_NR_OFFS];
	154
	155	union {
	156	os_random_state_t bsrange_state;
	157	struct frand_state __bsrange_state;
	158	};
	159	union {
	160	os_random_state_t verify_state;
	161	struct frand_state __verify_state;
	162	};
	163	union {
	164	os_random_state_t trim_state;
	165	struct frand_state __trim_state;
	166	};
	167
	168	struct frand_state buf_state;
	169
	170	unsigned int verify_batch;
	171	unsigned int trim_batch;
	172
	173	int shm_id;
	174
	175	/*
	176	* IO engine hooks, contains everything needed to submit an io_u
	177	* to any of the available IO engines.
	178	*/
	179	struct ioengine_ops *io_ops;
	180
	181	/*
	182	* Queue depth of io_u's that fio MIGHT do
	183	*/
	184	unsigned int cur_depth;
	185
	186	/*
	187	* io_u's about to be committed
	188	*/
	189	unsigned int io_u_queued;
	190
	191	/*
	192	* io_u's submitted but not completed yet
	193	*/
	194	unsigned int io_u_in_flight;
	195
	196	/*
	197	* List of free and busy io_u's
	198	*/
	199	struct flist_head io_u_freelist;
	200	struct flist_head io_u_busylist;
	201	struct flist_head io_u_requeues;
	202	pthread_mutex_t io_u_lock;
	203	pthread_cond_t free_cond;
	204
	205	/*
	206	* async verify offload
	207	*/
	208	struct flist_head verify_list;
	209	pthread_t *verify_threads;
	210	unsigned int nr_verify_threads;
	211	pthread_cond_t verify_cond;
	212	int verify_thread_exit;
	213
	214	/*
	215	* Rate state
	216	*/
	217	unsigned long long rate_bps[DDIR_RWDIR_CNT];
	218	long rate_pending_usleep[DDIR_RWDIR_CNT];
	219	unsigned long rate_bytes[DDIR_RWDIR_CNT];
	220	unsigned long rate_blocks[DDIR_RWDIR_CNT];
	221	struct timeval lastrate[DDIR_RWDIR_CNT];
	222
	223	unsigned long long total_io_size;
	224	unsigned long long fill_device_size;
	225
	226	unsigned long io_issues[DDIR_RWDIR_CNT];
	227	unsigned long long io_blocks[DDIR_RWDIR_CNT];
	228	unsigned long long this_io_blocks[DDIR_RWDIR_CNT];
	229	unsigned long long io_bytes[DDIR_RWDIR_CNT];
	230	unsigned long long io_skip_bytes;
	231	unsigned long long this_io_bytes[DDIR_RWDIR_CNT];
	232	unsigned long long zone_bytes;
	233	struct fio_mutex *mutex;
	234
	235	/*
	236	* State for random io, a bitmap of blocks done vs not done
	237	*/
	238	union {
	239	os_random_state_t random_state;
	240	struct frand_state __random_state;
	241	};
	242
	243	struct timeval start; /* start of this loop */
	244	struct timeval epoch; /* time job was started */
	245	struct timeval last_issue;
	246	struct timeval tv_cache;
	247	unsigned int tv_cache_nr;
	248	unsigned int tv_cache_mask;
	249	unsigned int ramp_time_over;
	250
	251	/*
	252	* read/write mixed workload state
	253	*/
	254	union {
	255	os_random_state_t rwmix_state;
	256	struct frand_state __rwmix_state;
	257	};
	258	unsigned long rwmix_issues;
	259	enum fio_ddir rwmix_ddir;
	260	unsigned int ddir_seq_nr;
	261
	262	/*
	263	* IO history logs for verification. We use a tree for sorting,
	264	* if we are overwriting. Otherwise just use a fifo.
	265	*/
	266	struct rb_root io_hist_tree;
	267	struct flist_head io_hist_list;
	268	unsigned long io_hist_len;
	269
	270	/*
	271	* For IO replaying
	272	*/
	273	struct flist_head io_log_list;
	274
	275	/*
	276	* For tracking/handling discards
	277	*/
	278	struct flist_head trim_list;
	279	unsigned long trim_entries;
	280
	281	/*
	282	* for fileservice, how often to switch to a new file
	283	*/
	284	unsigned int file_service_nr;
	285	unsigned int file_service_left;
	286	struct fio_file *file_service_file;
	287
	288	unsigned int sync_file_range_nr;
	289
	290	/*
	291	* For generating file sizes
	292	*/
	293	union {
	294	os_random_state_t file_size_state;
	295	struct frand_state __file_size_state;
	296	};
	297
	298	/*
	299	* Error counts
	300	*/
	301	unsigned int total_err_count;
	302	int first_error;
	303
	304	struct fio_flow *flow;
	305
	306	/*
	307	* Can be overloaded by profiles
	308	*/
	309	struct prof_io_ops prof_io_ops;
	310	void *prof_data;
	311
	312	void *pinned_mem;
	313	};
	314
	315	/*
	316	* when should interactive ETA output be generated
	317	*/
	318	enum {
	319	FIO_ETA_AUTO,
	320	FIO_ETA_ALWAYS,
	321	FIO_ETA_NEVER,
	322	};
	323
	324	#define __td_verror(td, err, msg, func) \
	325	do { \
	326	if ((td)->error) \
	327	break; \
	328	int e = (err); \
	329	(td)->error = e; \
	330	if (!(td)->first_error) \
	331	snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
	332	} while (0)
	333
	334
	335	#define td_clear_error(td) \
	336	(td)->error = 0;
	337	#define td_verror(td, err, func) \
	338	__td_verror((td), (err), strerror((err)), (func))
	339	#define td_vmsg(td, err, msg, func) \
	340	__td_verror((td), (err), (msg), (func))
	341
	342	#define __fio_stringify_1(x) #x
	343	#define __fio_stringify(x) __fio_stringify_1(x)
	344
	345	extern int exitall_on_terminate;
	346	extern unsigned int thread_number;
	347	extern unsigned int stat_number;
	348	extern int shm_id;
	349	extern int groupid;
	350	extern int output_format;
	351	extern int temp_stall_ts;
	352	extern uintptr_t page_mask, page_size;
	353	extern int read_only;
	354	extern int eta_print;
	355	extern unsigned long done_secs;
	356	extern char *job_section;
	357	extern int fio_gtod_offload;
	358	extern int fio_gtod_cpu;
	359	extern enum fio_cs fio_clock_source;
	360	extern int fio_clock_source_set;
	361	extern int warnings_fatal;
	362	extern int terse_version;
	363	extern int is_backend;
	364	extern int nr_clients;
	365	extern int log_syslog;
	366	extern const char fio_version_string[];
	367	extern const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN];
	368
	369	extern struct thread_data *threads;
	370
	371	static inline void fio_ro_check(struct thread_data td, struct io_u io_u)
	372	{
	373	assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
	374	}
	375
	376	#define REAL_MAX_JOBS 2048
	377
	378	static inline enum error_type_bit td_error_type(enum fio_ddir ddir, int err)
	379	{
	380	if (err == EILSEQ)
	381	return ERROR_TYPE_VERIFY_BIT;
	382	if (ddir == DDIR_READ)
	383	return ERROR_TYPE_READ_BIT;
	384	return ERROR_TYPE_WRITE_BIT;
	385	}
	386
	387	static int __NON_FATAL_ERR[] = {EIO, EILSEQ};
	388	static inline int td_non_fatal_error(struct thread_data *td,
	389	enum error_type_bit etype, int err)
	390	{
	391	int i;
	392	if (!td->o.ignore_error[etype]) {
	393	td->o.ignore_error[etype] = __NON_FATAL_ERR;
	394	td->o.ignore_error_nr[etype] = sizeof(__NON_FATAL_ERR)
	395	/ sizeof(int);
	396	}
	397
	398	if (!(td->o.continue_on_error & (1 << etype)))
	399	return 0;
	400	for (i = 0; i < td->o.ignore_error_nr[etype]; i++)
	401	if (td->o.ignore_error[etype][i] == err)
	402	return 1;
	403	return 0;
	404	}
	405
	406	static inline void update_error_count(struct thread_data *td, int err)
	407	{
	408	td->total_err_count++;
	409	if (td->total_err_count == 1)
	410	td->first_error = err;
	411	}
	412
	413	static inline int should_fsync(struct thread_data *td)
	414	{
	415	if (td->last_was_sync)
	416	return 0;
	417	if (td->o.odirect)
	418	return 0;
	419	if (td_write(td) \|\| td_rw(td) \|\| td->o.override_sync)
	420	return 1;
	421
	422	return 0;
	423	}
	424
	425	/*
	426	* Init/option functions
	427	*/
	428	extern int __must_check fio_init_options(void);
	429	extern int __must_check parse_options(int, char **);
	430	extern int parse_jobs_ini(char *, int, int, int);
	431	extern int parse_cmd_line(int, char **, int);
	432	extern int fio_backend(void);
	433	extern void reset_fio_state(void);
	434	extern void clear_io_state(struct thread_data *);
	435	extern int fio_options_parse(struct thread_data , char *, int);
	436	extern void fio_keywords_init(void);
	437	extern int fio_cmd_option_parse(struct thread_data , const char , char *);
	438	extern int fio_cmd_ioengine_option_parse(struct thread_data , const char , char *);
	439	extern void fio_fill_default_options(struct thread_data *);
	440	extern int fio_show_option_help(const char *);
	441	extern void fio_options_set_ioengine_opts(struct option long_options, struct thread_data td);
	442	extern void fio_options_dup_and_init(struct option *);
	443	extern void fio_options_mem_dupe(struct thread_data *);
	444	extern void options_mem_dupe(void data, struct fio_option options);
	445	extern void td_fill_rand_seeds(struct thread_data *);
	446	extern void add_job_opts(const char **, int);
	447	extern char *num2str(unsigned long, int, int, int);
	448	extern int ioengine_load(struct thread_data *);
	449
	450	extern unsigned long page_mask;
	451	extern unsigned long page_size;
	452	extern int initialize_fio(char *envp[]);
	453
	454	#define FIO_GETOPT_JOB 0x89000000
	455	#define FIO_GETOPT_IOENGINE 0x98000000
	456	#define FIO_NR_OPTIONS (FIO_MAX_OPTS + 128)
	457
	458	/*
	459	* ETA/status stuff
	460	*/
	461	extern void print_thread_status(void);
	462	extern void print_status_init(int);
	463	extern char *fio_uint_to_kmg(unsigned int val);
	464
	465	/*
	466	* Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
	467	* will never back again. It may cycle between running/verififying/fsyncing.
	468	* Once the thread reaches TD_EXITED, it is just waiting for the core to
	469	* reap it.
	470	*/
	471	enum {
	472	TD_NOT_CREATED = 0,
	473	TD_CREATED,
	474	TD_INITIALIZED,
	475	TD_RAMP,
	476	TD_SETTING_UP,
	477	TD_RUNNING,
	478	TD_PRE_READING,
	479	TD_VERIFYING,
	480	TD_FSYNCING,
	481	TD_EXITED,
	482	TD_REAPED,
	483	};
	484
	485	extern void td_set_runstate(struct thread_data *, int);
	486	#define TERMINATE_ALL (-1)
	487	extern void fio_terminate_threads(int);
	488
	489	/*
	490	* Memory helpers
	491	*/
	492	extern int __must_check fio_pin_memory(struct thread_data *);
	493	extern void fio_unpin_memory(struct thread_data *);
	494	extern int __must_check allocate_io_mem(struct thread_data *);
	495	extern void free_io_mem(struct thread_data *);
	496	extern void free_threads_shm(void);
	497
	498	/*
	499	* Reset stats after ramp time completes
	500	*/
	501	extern void reset_all_stats(struct thread_data *);
	502
	503	/*
	504	* blktrace support
	505	*/
	506	#ifdef FIO_HAVE_BLKTRACE
	507	extern int is_blktrace(const char *);
	508	extern int load_blktrace(struct thread_data , const char );
	509	#endif
	510
	511	/*
	512	* Mark unused variables passed to ops functions as unused, to silence gcc
	513	*/
	514	#define fio_unused __attribute((__unused__))
	515	#define fio_init __attribute__((constructor))
	516	#define fio_exit __attribute__((destructor))
	517
	518	#define for_each_td(td, i) \
	519	for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
	520	#define for_each_file(td, f, i) \
	521	if ((td)->files_index) \
	522	for ((i) = 0, (f) = (td)->files[0]; \
	523	(i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
	524	(i)++)
	525
	526	#define fio_assert(td, cond) do { \
	527	if (!(cond)) { \
	528	int *__foo = NULL; \
	529	fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
	530	td_set_runstate((td), TD_EXITED); \
	531	(td)->error = EFAULT; \
	532	*__foo = 0; \
	533	} \
	534	} while (0)
	535
	536	static inline int fio_fill_issue_time(struct thread_data *td)
	537	{
	538	if (td->o.read_iolog_file \|\|
	539	!td->o.disable_clat \|\| !td->o.disable_slat \|\| !td->o.disable_bw)
	540	return 1;
	541
	542	return 0;
	543	}
	544
	545	static inline int __should_check_rate(struct thread_data *td,
	546	enum fio_ddir ddir)
	547	{
	548	struct thread_options *o = &td->o;
	549
	550	/*
	551	* If some rate setting was given, we need to check it
	552	*/
	553	if (o->rate[ddir] \|\| o->ratemin[ddir] \|\| o->rate_iops[ddir] \|\|
	554	o->rate_iops_min[ddir])
	555	return 1;
	556
	557	return 0;
	558	}
	559
	560	static inline int should_check_rate(struct thread_data *td,
	561	unsigned long *bytes_done)
	562	{
	563	int ret = 0;
	564
	565	if (bytes_done[DDIR_READ])
	566	ret \|= __should_check_rate(td, DDIR_READ);
	567	if (bytes_done[DDIR_WRITE])
	568	ret \|= __should_check_rate(td, DDIR_WRITE);
	569	if (bytes_done[DDIR_TRIM])
	570	ret \|= __should_check_rate(td, DDIR_TRIM);
	571
	572	return ret;
	573	}
	574
	575	static inline int is_power_of_2(unsigned int val)
	576	{
	577	return (val != 0 && ((val & (val - 1)) == 0));
	578	}
	579
	580	/*
	581	* We currently only need to do locking if we have verifier threads
	582	* accessing our internal structures too
	583	*/
	584	static inline void td_io_u_lock(struct thread_data *td)
	585	{
	586	if (td->o.verify_async)
	587	pthread_mutex_lock(&td->io_u_lock);
	588	}
	589
	590	static inline void td_io_u_unlock(struct thread_data *td)
	591	{
	592	if (td->o.verify_async)
	593	pthread_mutex_unlock(&td->io_u_lock);
	594	}
	595
	596	static inline void td_io_u_free_notify(struct thread_data *td)
	597	{
	598	if (td->o.verify_async)
	599	pthread_cond_signal(&td->free_cond);
	600	}
	601
	602	extern const char *fio_get_arch_string(int);
	603	extern const char *fio_get_os_string(int);
	604
	605	#define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))
	606
	607	enum {
	608	FIO_OUTPUT_TERSE = 0,
	609	FIO_OUTPUT_JSON,
	610	FIO_OUTPUT_NORMAL,
	611	};
	612
	613	enum {
	614	FIO_RAND_DIST_RANDOM = 0,
	615	FIO_RAND_DIST_ZIPF,
	616	FIO_RAND_DIST_PARETO,
	617	};
	618
	619	enum {
	620	FIO_RAND_GEN_TAUSWORTHE = 0,
	621	FIO_RAND_GEN_LFSR,
	622	};
	623
	624	#endif