fio.h - platform/external/fio - Gitiles

 #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 "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"
 #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 "lib/getopt.h"

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

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

 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];
 	unsigned int kb_base;
 };

 /*
  * 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 */
 };

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

 /*
  * How many depth levels to log
  */
 #define FIO_IO_U_MAP_NR	7
 #define FIO_IO_U_LAT_U_NR 10
 #define FIO_IO_U_LAT_M_NR 12

 #define MAX_PATTERN_SIZE 512

 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 *lat_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 lat_stat[2];		/* total 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[3];
 	unsigned long short_io_u[3];
 	unsigned long total_submit;
 	unsigned long total_complete;

 	unsigned long long io_bytes[2];
 	unsigned long runtime[2];
 	unsigned long total_run_time;

 	/*
 	 * IO Error related stats
 	 */
 	unsigned continue_on_error;
 	unsigned long total_err_count;
 	int first_error;

 	unsigned int kb_base;
 };

 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 rw_seq;
 	unsigned int kb_base;
 	unsigned int ddir_seq_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 ba[2];
 	unsigned int min_bs[2];
 	unsigned int max_bs[2];
 	struct bssplit *bssplit[2];
 	unsigned int bssplit_nr[2];

 	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 create_on_open;
 	unsigned int end_fsync;
 	unsigned int pre_read;
 	unsigned int sync_io;
 	unsigned int verify;
 	unsigned int do_verify;
 	unsigned int verifysort;
 	unsigned int verify_interval;
 	unsigned int verify_offset;
 	char verify_pattern[MAX_PATTERN_SIZE];
 	unsigned int verify_pattern_bytes;
 	unsigned int verify_fatal;
 	unsigned int verify_async;
 	unsigned long long verify_backlog;
 	unsigned int verify_batch;
 	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 fdatasync_blocks;
 	unsigned long 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 mem_align;

 	unsigned int stonewall;
 	unsigned int new_group;
 	unsigned int numjobs;
 	os_cpu_mask_t cpumask;
 	unsigned int cpumask_set;
 	os_cpu_mask_t verify_cpumask;
 	unsigned int verify_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 fallocate;
 	unsigned int zero_buffers;
 	unsigned int refill_buffers;
 	unsigned int time_based;
 	unsigned int disable_lat;
 	unsigned int disable_clat;
 	unsigned int disable_slat;
 	unsigned int disable_bw;
 	unsigned int gtod_reduce;
 	unsigned int gtod_cpu;
 	unsigned int gtod_offload;
 	enum fio_cs clocksource;
 	unsigned int no_stall;
 	unsigned int trim_percentage;
 	unsigned int trim_batch;
 	unsigned int trim_zero;
 	unsigned long long trim_backlog;

 	char *read_iolog_file;
 	char *write_iolog_file;
 	char *bw_log_file;
 	char *lat_log_file;
 	char *replay_redirect;

 	/*
 	 * Pre-run and post-run shell
 	 */
 	char *exec_prerun;
 	char *exec_postrun;

 	unsigned int rate[2];
 	unsigned int ratemin[2];
 	unsigned int ratecycle;
 	unsigned int rate_iops[2];
 	unsigned int rate_iops_min[2];

 	char *ioscheduler;

 	/*
 	 * CPU "io" cycle burner
 	 */
 	unsigned int cpuload;
 	unsigned int cpucycle;

 	/*
 	 * I/O Error handling
 	 */
 	unsigned int continue_on_error;

 	/*
 	 * Benchmark profile type
 	 */
 	char *profile;

 	/*
 	 * blkio cgroup support
 	 */
 	char *cgroup;
 	unsigned int cgroup_weight;
 	unsigned int cgroup_nodelete;

 	unsigned int uid;
 	unsigned int gid;

 	unsigned int sync_file_range;
 };

 #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_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;
 	};
 	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;
 	enum fio_ddir last_ddir;

 	char *mmapfile;
 	int mmapfd;

 	void *iolog_buf;
 	FILE *iolog_f;

 	char *sysfs_root;

 	unsigned long rand_seeds[7];

 	os_random_state_t bsrange_state;
 	os_random_state_t verify_state;
 	os_random_state_t trim_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;

 	/*
 	 * 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;
 	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 rate_nsec_cycle[2];
 	long rate_pending_usleep[2];
 	unsigned long rate_bytes[2];
 	unsigned long rate_blocks[2];
 	struct timeval lastrate[2];

 	unsigned long long total_io_size;
 	unsigned long long fill_device_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 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
 	 */
 	os_random_state_t 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
 	 */
 	os_random_state_t file_size_state;

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

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

 /*
  * 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))

 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 enum fio_cs fio_clock_source;

 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 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)

 #define td_non_fatal_error(e)	((e) == EIO || (e) == EILSEQ)

 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 parse_options(int, char **);
 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 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 *);
 extern void td_fill_rand_seeds(struct thread_data *);
 extern void add_job_opts(const char **);
 extern char *num2str(unsigned long, int, int, int);

 #define FIO_GETOPT_JOB		0x89988998
 #define FIO_NR_OPTIONS		(FIO_MAX_OPTS + 128)

 /*
  * ETA/status stuff
  */
 extern void print_thread_status(void);
 extern void print_status_init(int);

 /*
  * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
  * will never back again. It may cycle between running/verififying/fsyncing.
  * Once the thread reaches TD_EXITED, it is just waiting for the core to
  * reap it.
  */
 enum {
 	TD_NOT_CREATED = 0,
 	TD_CREATED,
 	TD_INITIALIZED,
 	TD_RAMP,
 	TD_RUNNING,
 	TD_PRE_READING,
 	TD_VERIFYING,
 	TD_FSYNCING,
 	TD_EXITED,
 	TD_REAPED,
 };

 extern void td_set_runstate(struct thread_data *, int);

 /*
  * 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 *);

 /*
  * 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)->runstate = 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[0])
 		ret |= __should_check_rate(td, 0);
 	if (bytes_done[1])
 		ret |= __should_check_rate(td, 1);

 	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);
 }

 #endif
	#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 "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"
	#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 "lib/getopt.h"

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

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

	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];
	unsigned int kb_base;
	};

	/*
	* 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 */
	};

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

	/*
	* How many depth levels to log
	*/
	#define FIO_IO_U_MAP_NR 7
	#define FIO_IO_U_LAT_U_NR 10
	#define FIO_IO_U_LAT_M_NR 12

	#define MAX_PATTERN_SIZE 512

	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 *lat_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 lat_stat[2]; /* total 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[3];
	unsigned long short_io_u[3];
	unsigned long total_submit;
	unsigned long total_complete;

	unsigned long long io_bytes[2];
	unsigned long runtime[2];
	unsigned long total_run_time;

	/*
	* IO Error related stats
	*/
	unsigned continue_on_error;
	unsigned long total_err_count;
	int first_error;

	unsigned int kb_base;
	};

	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 rw_seq;
	unsigned int kb_base;
	unsigned int ddir_seq_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 ba[2];
	unsigned int min_bs[2];
	unsigned int max_bs[2];
	struct bssplit *bssplit[2];
	unsigned int bssplit_nr[2];

	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 create_on_open;
	unsigned int end_fsync;
	unsigned int pre_read;
	unsigned int sync_io;
	unsigned int verify;
	unsigned int do_verify;
	unsigned int verifysort;
	unsigned int verify_interval;
	unsigned int verify_offset;
	char verify_pattern[MAX_PATTERN_SIZE];
	unsigned int verify_pattern_bytes;
	unsigned int verify_fatal;
	unsigned int verify_async;
	unsigned long long verify_backlog;
	unsigned int verify_batch;
	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 fdatasync_blocks;
	unsigned long 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 mem_align;

	unsigned int stonewall;
	unsigned int new_group;
	unsigned int numjobs;
	os_cpu_mask_t cpumask;
	unsigned int cpumask_set;
	os_cpu_mask_t verify_cpumask;
	unsigned int verify_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 fallocate;
	unsigned int zero_buffers;
	unsigned int refill_buffers;
	unsigned int time_based;
	unsigned int disable_lat;
	unsigned int disable_clat;
	unsigned int disable_slat;
	unsigned int disable_bw;
	unsigned int gtod_reduce;
	unsigned int gtod_cpu;
	unsigned int gtod_offload;
	enum fio_cs clocksource;
	unsigned int no_stall;
	unsigned int trim_percentage;
	unsigned int trim_batch;
	unsigned int trim_zero;
	unsigned long long trim_backlog;

	char *read_iolog_file;
	char *write_iolog_file;
	char *bw_log_file;
	char *lat_log_file;
	char *replay_redirect;

	/*
	* Pre-run and post-run shell
	*/
	char *exec_prerun;
	char *exec_postrun;

	unsigned int rate[2];
	unsigned int ratemin[2];
	unsigned int ratecycle;
	unsigned int rate_iops[2];
	unsigned int rate_iops_min[2];

	char *ioscheduler;

	/*
	* CPU "io" cycle burner
	*/
	unsigned int cpuload;
	unsigned int cpucycle;

	/*
	* I/O Error handling
	*/
	unsigned int continue_on_error;

	/*
	* Benchmark profile type
	*/
	char *profile;

	/*
	* blkio cgroup support
	*/
	char *cgroup;
	unsigned int cgroup_weight;
	unsigned int cgroup_nodelete;

	unsigned int uid;
	unsigned int gid;

	unsigned int sync_file_range;
	};

	#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_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;
	};
	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;
	enum fio_ddir last_ddir;

	char *mmapfile;
	int mmapfd;

	void *iolog_buf;
	FILE *iolog_f;

	char *sysfs_root;

	unsigned long rand_seeds[7];

	os_random_state_t bsrange_state;
	os_random_state_t verify_state;
	os_random_state_t trim_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;

	/*
	* 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;
	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 rate_nsec_cycle[2];
	long rate_pending_usleep[2];
	unsigned long rate_bytes[2];
	unsigned long rate_blocks[2];
	struct timeval lastrate[2];

	unsigned long long total_io_size;
	unsigned long long fill_device_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 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
	*/
	os_random_state_t 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
	*/
	os_random_state_t file_size_state;

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

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

	/*
	* 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))

	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 enum fio_cs fio_clock_source;

	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 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)

	#define td_non_fatal_error(e) ((e) == EIO \|\| (e) == EILSEQ)

	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 parse_options(int, char **);
	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 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 *);
	extern void td_fill_rand_seeds(struct thread_data *);
	extern void add_job_opts(const char **);
	extern char *num2str(unsigned long, int, int, int);

	#define FIO_GETOPT_JOB 0x89988998
	#define FIO_NR_OPTIONS (FIO_MAX_OPTS + 128)

	/*
	* ETA/status stuff
	*/
	extern void print_thread_status(void);
	extern void print_status_init(int);

	/*
	* Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
	* will never back again. It may cycle between running/verififying/fsyncing.
	* Once the thread reaches TD_EXITED, it is just waiting for the core to
	* reap it.
	*/
	enum {
	TD_NOT_CREATED = 0,
	TD_CREATED,
	TD_INITIALIZED,
	TD_RAMP,
	TD_RUNNING,
	TD_PRE_READING,
	TD_VERIFYING,
	TD_FSYNCING,
	TD_EXITED,
	TD_REAPED,
	};

	extern void td_set_runstate(struct thread_data *, int);

	/*
	* 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 *);

	/*
	* 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)->runstate = 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[0])
	ret \|= __should_check_rate(td, 0);
	if (bytes_done[1])
	ret \|= __should_check_rate(td, 1);

	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);
	}

	#endif