[fio.git] / file.h

#ifndef FIO_FILE_H
#define FIO_FILE_H

#include <string.h>
#include "compiler/compiler.h"
#include "io_ddir.h"
#include "flist.h"
#include "lib/zipf.h"
#include "lib/axmap.h"
#include "lib/lfsr.h"
#include "lib/gauss.h"

/* Forward declarations */
struct zoned_block_device_info;

/*
 * The type of object we are working on
 */
enum fio_filetype {
	FIO_TYPE_FILE = 1,		/* plain file */
	FIO_TYPE_BLOCK,			/* block device */
	FIO_TYPE_CHAR,			/* character device */
	FIO_TYPE_PIPE,			/* pipe */
};

enum fio_file_flags {
	FIO_FILE_open		= 1 << 0,	/* file is open */
	FIO_FILE_closing	= 1 << 1,	/* file being closed */
	FIO_FILE_extend		= 1 << 2,	/* needs extend */
	FIO_FILE_done		= 1 << 3,	/* io completed to this file */
	FIO_FILE_size_known	= 1 << 4,	/* size has been set */
	FIO_FILE_hashed		= 1 << 5,	/* file is on hash */
	FIO_FILE_partial_mmap	= 1 << 6,	/* can't do full mmap */
	FIO_FILE_axmap		= 1 << 7,	/* uses axmap */
	FIO_FILE_lfsr		= 1 << 8,	/* lfsr is used */
};

enum file_lock_mode {
	FILE_LOCK_NONE,
	FILE_LOCK_EXCLUSIVE,
	FILE_LOCK_READWRITE,
};

/*
 * How fio chooses what file to service next. Choice of uniformly random, or
 * some skewed random variants, or just sequentially go through them or
 * roundrobing.
 */
enum {
	FIO_FSERVICE_RANDOM		= 1,
	FIO_FSERVICE_RR			= 2,
	FIO_FSERVICE_SEQ		= 3,
	__FIO_FSERVICE_NONUNIFORM	= 0x100,
	FIO_FSERVICE_ZIPF		= __FIO_FSERVICE_NONUNIFORM | 4,
	FIO_FSERVICE_PARETO		= __FIO_FSERVICE_NONUNIFORM | 5,
	FIO_FSERVICE_GAUSS		= __FIO_FSERVICE_NONUNIFORM | 6,

	FIO_FSERVICE_SHIFT		= 10,
};

/*
 * No pre-allocation when laying down files, or call posix_fallocate(), or
 * call fallocate() with FALLOC_FL_KEEP_SIZE set.
 */
enum fio_fallocate_mode {
	FIO_FALLOCATE_NONE	= 1,
	FIO_FALLOCATE_POSIX	= 2,
	FIO_FALLOCATE_KEEP_SIZE	= 3,
	FIO_FALLOCATE_NATIVE	= 4,
};

/*
 * Each thread_data structure has a number of files associated with it,
 * this structure holds state information for a single file.
 */
struct fio_file {
	struct flist_head hash_list;
	enum fio_filetype filetype;

	int fd;
	int shadow_fd;
#ifdef WIN32
	HANDLE hFile;
	HANDLE ioCP;
#endif

	/*
	 * filename and possible memory mapping
	 */
	unsigned int major, minor;
	int fileno;
	char *file_name;

	/*
	 * size of the file, offset into file, and io size from that offset
	 * (be aware io_size is different from thread_options::io_size)
	 */
	uint64_t real_file_size;
	uint64_t file_offset;
	uint64_t io_size;

	/*
	 * Zoned block device information. See also zonemode=zbd.
	 */
	struct zoned_block_device_info *zbd_info;

	/*
	 * Track last end and last start of IO for a given data direction
	 */
	uint64_t last_pos[DDIR_RWDIR_CNT];
	uint64_t last_start[DDIR_RWDIR_CNT];

	uint64_t first_write;
	uint64_t last_write;

	/*
	 * Tracks the last iodepth number of completed writes, if data
	 * verification is enabled
	 */
	uint64_t *last_write_comp;
	unsigned int last_write_idx;

	/*
	 * For use by the io engine for offset or private data storage
	 */
	union {
		uint64_t engine_pos;
		void *engine_data;
	};

	/*
	 * if io is protected by a semaphore, this is set
	 */
	union {
		struct fio_sem *lock;
		struct fio_rwlock *rwlock;
	};

	/*
	 * block map or LFSR for random io
	 */
	union {
		struct axmap *io_axmap;
		struct fio_lfsr lfsr;
	};

	/*
	 * Used for zipf random distribution
	 */
	union {
		struct zipf_state zipf;
		struct gauss_state gauss;
	};

	int references;
	enum fio_file_flags flags;

	struct disk_util *du;
};

#define FILE_ENG_DATA(f)		((f)->engine_data)
#define FILE_SET_ENG_DATA(f, data)	((f)->engine_data = (data))

#define FILE_FLAG_FNS(name)						\
static inline void fio_file_set_##name(struct fio_file *f)		\
{									\
	(f)->flags = (enum fio_file_flags) ((f)->flags | FIO_FILE_##name);	\
}									\
static inline void fio_file_clear_##name(struct fio_file *f)		\
{									\
	(f)->flags = (enum fio_file_flags) ((f)->flags & ~FIO_FILE_##name);	\
}									\
static inline int fio_file_##name(struct fio_file *f)			\
{									\
	return ((f)->flags & FIO_FILE_##name) != 0;			\
}

FILE_FLAG_FNS(open);
FILE_FLAG_FNS(closing);
FILE_FLAG_FNS(extend);
FILE_FLAG_FNS(done);
FILE_FLAG_FNS(size_known);
FILE_FLAG_FNS(hashed);
FILE_FLAG_FNS(partial_mmap);
FILE_FLAG_FNS(axmap);
FILE_FLAG_FNS(lfsr);
#undef FILE_FLAG_FNS

/*
 * File setup/shutdown
 */
struct thread_data;
extern void close_files(struct thread_data *);
extern void close_and_free_files(struct thread_data *);
extern uint64_t get_start_offset(struct thread_data *, struct fio_file *);
extern int __must_check setup_files(struct thread_data *);
extern int __must_check file_invalidate_cache(struct thread_data *, struct fio_file *);
#ifdef __cplusplus
extern "C" {
#endif
extern int __must_check generic_open_file(struct thread_data *, struct fio_file *);
extern int __must_check generic_close_file(struct thread_data *, struct fio_file *);
extern int __must_check generic_get_file_size(struct thread_data *, struct fio_file *);
#ifdef __cplusplus
}
#endif
extern int __must_check file_lookup_open(struct fio_file *f, int flags);
extern bool __must_check pre_read_files(struct thread_data *);
extern unsigned long long get_rand_file_size(struct thread_data *td);
extern int add_file(struct thread_data *, const char *, int, int);
extern int add_file_exclusive(struct thread_data *, const char *);
extern void get_file(struct fio_file *);
extern int __must_check put_file(struct thread_data *, struct fio_file *);
extern void put_file_log(struct thread_data *, struct fio_file *);
extern void lock_file(struct thread_data *, struct fio_file *, enum fio_ddir);
extern void unlock_file(struct thread_data *, struct fio_file *);
extern void unlock_file_all(struct thread_data *, struct fio_file *);
extern int add_dir_files(struct thread_data *, const char *);
extern bool init_random_map(struct thread_data *);
extern void dup_files(struct thread_data *, struct thread_data *);
extern int get_fileno(struct thread_data *, const char *);
extern void free_release_files(struct thread_data *);
extern void filesetup_mem_free(void);
extern void fio_file_reset(struct thread_data *, struct fio_file *);
extern bool fio_files_done(struct thread_data *);
extern bool exists_and_not_regfile(const char *);
extern int fio_set_directio(struct thread_data *, struct fio_file *);

#endif
Commit	Line	Data
d6aed795 JA	1	#ifndef FIO_FILE_H
	2	#define FIO_FILE_H
	3
e2e58886	4	#include <string.h>
ecc314ba	5	#include "compiler/compiler.h"
d6aed795	6	#include "io_ddir.h"
ecc314ba	7	#include "flist.h"
9c6f6316	8	#include "lib/zipf.h"
7ebd796f	9	#include "lib/axmap.h"
8055e41d	10	#include "lib/lfsr.h"
56d9fa4b	11	#include "lib/gauss.h"
d6aed795	12
bfbdd35b BVA	13	/* Forward declarations */
	14	struct zoned_block_device_info;
	15
d6aed795 JA	16	/*
	17	* The type of object we are working on
	18	*/
	19	enum fio_filetype {
	20	FIO_TYPE_FILE = 1, /* plain file */
686fbd31	21	FIO_TYPE_BLOCK, /* block device */
d6aed795 JA	22	FIO_TYPE_CHAR, /* character device */
	23	FIO_TYPE_PIPE, /* pipe */
	24	};
	25
	26	enum fio_file_flags {
	27	FIO_FILE_open = 1 << 0, /* file is open */
	28	FIO_FILE_closing = 1 << 1, /* file being closed */
	29	FIO_FILE_extend = 1 << 2, /* needs extend */
	30	FIO_FILE_done = 1 << 3, /* io completed to this file */
	31	FIO_FILE_size_known = 1 << 4, /* size has been set */
	32	FIO_FILE_hashed = 1 << 5, /* file is on hash */
ed47cbf7	33	FIO_FILE_partial_mmap = 1 << 6, /* can't do full mmap */
967d1b63 JA	34	FIO_FILE_axmap = 1 << 7, /* uses axmap */
967d1b63 JA	35	FIO_FILE_lfsr = 1 << 8, /* lfsr is used */
d6aed795 JA	36	};
	37
	38	enum file_lock_mode {
	39	FILE_LOCK_NONE,
	40	FILE_LOCK_EXCLUSIVE,
	41	FILE_LOCK_READWRITE,
	42	};
	43
590aebda	44	/*
8c07860d JA	45	* How fio chooses what file to service next. Choice of uniformly random, or
	46	* some skewed random variants, or just sequentially go through them or
	47	* roundrobing.
590aebda JA	48	*/
590aebda JA	49	enum {
8c07860d JA	50	FIO_FSERVICE_RANDOM = 1,
	51	FIO_FSERVICE_RR = 2,
	52	FIO_FSERVICE_SEQ = 3,
	53	__FIO_FSERVICE_NONUNIFORM = 0x100,
	54	FIO_FSERVICE_ZIPF = __FIO_FSERVICE_NONUNIFORM \| 4,
	55	FIO_FSERVICE_PARETO = __FIO_FSERVICE_NONUNIFORM \| 5,
	56	FIO_FSERVICE_GAUSS = __FIO_FSERVICE_NONUNIFORM \| 6,
	57
	58	FIO_FSERVICE_SHIFT = 10,
590aebda JA	59	};
590aebda JA	60
a596f047 EG	61	/*
	62	* No pre-allocation when laying down files, or call posix_fallocate(), or
	63	* call fallocate() with FALLOC_FL_KEEP_SIZE set.
	64	*/
	65	enum fio_fallocate_mode {
	66	FIO_FALLOCATE_NONE = 1,
	67	FIO_FALLOCATE_POSIX = 2,
	68	FIO_FALLOCATE_KEEP_SIZE = 3,
2c3e17be	69	FIO_FALLOCATE_NATIVE = 4,
a596f047 EG	70	};
a596f047 EG	71
d6aed795 JA	72	/*
	73	* Each thread_data structure has a number of files associated with it,
	74	* this structure holds state information for a single file.
	75	*/
	76	struct fio_file {
	77	struct flist_head hash_list;
	78	enum fio_filetype filetype;
	79
0e238572	80	int fd;
e6c4d732	81	int shadow_fd;
93bcfd20	82	#ifdef WIN32
03e20d68 BC	83	HANDLE hFile;
	84	HANDLE ioCP;
	85	#endif
d6aed795 JA	86
	87	/*
	88	* filename and possible memory mapping
	89	*/
d6aed795	90	unsigned int major, minor;
89ac1d48	91	int fileno;
d8f1f7d4	92	char *file_name;
d6aed795	93
d6aed795 JA	94	/*
d6aed795 JA	95	* size of the file, offset into file, and io size from that offset
79591fa9	96	* (be aware io_size is different from thread_options::io_size)
d6aed795	97	*/
293b8c1f JA	98	uint64_t real_file_size;
	99	uint64_t file_offset;
	100	uint64_t io_size;
d6aed795	101
bfbdd35b BVA	102	/*
	103	* Zoned block device information. See also zonemode=zbd.
	104	*/
	105	struct zoned_block_device_info *zbd_info;
	106
f1dfb668 JA	107	/*
	108	* Track last end and last start of IO for a given data direction
	109	*/
	110	uint64_t last_pos[DDIR_RWDIR_CNT];
	111	uint64_t last_start[DDIR_RWDIR_CNT];
d6aed795	112
293b8c1f JA	113	uint64_t first_write;
293b8c1f JA	114	uint64_t last_write;
44f29692	115
94a6e1bb JA	116	/*
	117	* Tracks the last iodepth number of completed writes, if data
	118	* verification is enabled
	119	*/
	120	uint64_t *last_write_comp;
	121	unsigned int last_write_idx;
	122
e943b878	123	/*
710bf9c5	124	* For use by the io engine for offset or private data storage
e943b878	125	*/
710bf9c5 TK	126	union {
	127	uint64_t engine_pos;
	128	void *engine_data;
	129	};
e943b878	130
d6aed795 JA	131	/*
	132	* if io is protected by a semaphore, this is set
	133	*/
d7df1d13	134	union {
971caeb1	135	struct fio_sem *lock;
d7df1d13 JA	136	struct fio_rwlock *rwlock;
d7df1d13 JA	137	};
d6aed795 JA	138
d6aed795 JA	139	/*
967d1b63	140	* block map or LFSR for random io
d6aed795	141	*/
967d1b63 JA	142	union {
	143	struct axmap *io_axmap;
	144	struct fio_lfsr lfsr;
	145	};
8055e41d	146
9c6f6316 JA	147	/*
	148	* Used for zipf random distribution
	149	*/
56d9fa4b JA	150	union {
	151	struct zipf_state zipf;
	152	struct gauss_state gauss;
	153	};
9c6f6316	154
d6aed795 JA	155	int references;
	156	enum fio_file_flags flags;
	157
	158	struct disk_util *du;
	159	};
	160
710bf9c5 TK	161	#define FILE_ENG_DATA(f) ((f)->engine_data)
710bf9c5 TK	162	#define FILE_SET_ENG_DATA(f, data) ((f)->engine_data = (data))
e19ccb55	163
d6aed795 JA	164	#define FILE_FLAG_FNS(name) \
	165	static inline void fio_file_set_##name(struct fio_file *f) \
	166	{ \
bea5c23d	167	(f)->flags = (enum fio_file_flags) ((f)->flags \| FIO_FILE_##name); \
d6aed795 JA	168	} \
	169	static inline void fio_file_clear_##name(struct fio_file *f) \
	170	{ \
bea5c23d	171	(f)->flags = (enum fio_file_flags) ((f)->flags & ~FIO_FILE_##name); \
d6aed795 JA	172	} \
	173	static inline int fio_file_##name(struct fio_file *f) \
	174	{ \
	175	return ((f)->flags & FIO_FILE_##name) != 0; \
	176	}
	177
	178	FILE_FLAG_FNS(open);
	179	FILE_FLAG_FNS(closing);
	180	FILE_FLAG_FNS(extend);
	181	FILE_FLAG_FNS(done);
	182	FILE_FLAG_FNS(size_known);
	183	FILE_FLAG_FNS(hashed);
ed47cbf7	184	FILE_FLAG_FNS(partial_mmap);
967d1b63 JA	185	FILE_FLAG_FNS(axmap);
967d1b63 JA	186	FILE_FLAG_FNS(lfsr);
d6aed795 JA	187	#undef FILE_FLAG_FNS
d6aed795 JA	188
4cd02b3f JA	189	/*
	190	* File setup/shutdown
	191	*/
	192	struct thread_data;
	193	extern void close_files(struct thread_data *);
	194	extern void close_and_free_files(struct thread_data *);
bedc9dc2	195	extern uint64_t get_start_offset(struct thread_data , struct fio_file );
4cd02b3f JA	196	extern int __must_check setup_files(struct thread_data *);
4cd02b3f JA	197	extern int __must_check file_invalidate_cache(struct thread_data , struct fio_file );
966fcbd4	198	#ifdef __cplusplus
	199	extern "C" {
	200	#endif
4cd02b3f JA	201	extern int __must_check generic_open_file(struct thread_data , struct fio_file );
	202	extern int __must_check generic_close_file(struct thread_data , struct fio_file );
	203	extern int __must_check generic_get_file_size(struct thread_data , struct fio_file );
966fcbd4	204	#ifdef __cplusplus
	205	}
	206	#endif
1ccc6dc7	207	extern int __must_check file_lookup_open(struct fio_file *f, int flags);
c139f3b4	208	extern bool __must_check pre_read_files(struct thread_data *);
a3f001f5	209	extern unsigned long long get_rand_file_size(struct thread_data *td);
5903e7b7	210	extern int add_file(struct thread_data , const char , int, int);
49ffb4a2	211	extern int add_file_exclusive(struct thread_data , const char );
4cd02b3f JA	212	extern void get_file(struct fio_file *);
4cd02b3f JA	213	extern int __must_check put_file(struct thread_data , struct fio_file );
e8462bd8	214	extern void put_file_log(struct thread_data , struct fio_file );
4cd02b3f JA	215	extern void lock_file(struct thread_data , struct fio_file , enum fio_ddir);
	216	extern void unlock_file(struct thread_data , struct fio_file );
	217	extern void unlock_file_all(struct thread_data , struct fio_file );
	218	extern int add_dir_files(struct thread_data , const char );
4d832322	219	extern bool init_random_map(struct thread_data *);
4cd02b3f JA	220	extern void dup_files(struct thread_data , struct thread_data );
	221	extern int get_fileno(struct thread_data , const char );
	222	extern void free_release_files(struct thread_data *);
bcbfeefa	223	extern void filesetup_mem_free(void);
8aa89d70	224	extern void fio_file_reset(struct thread_data , struct fio_file );
747b3105	225	extern bool fio_files_done(struct thread_data *);
04d6530f	226	extern bool exists_and_not_regfile(const char *);
47534cda	227	extern int fio_set_directio(struct thread_data , struct fio_file );
c592b9fe	228
d6aed795	229	#endif