X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=file.h;h=84daa5f66b74a1c871796dd20c1f3375e0eacf89;hp=7948a4124caddca07d9ddc88b7166193b6546bce;hb=aed4796b989d3b33f86fb3be6b915e532df2d59d;hpb=63a582671fe6db03f0a0be81843f2b72bbc8ab33

diff --git a/file.h b/file.h
index 7948a412..84daa5f6 100644
--- a/file.h
+++ b/file.h
@@ -5,13 +5,17 @@
 #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"
 
 /*
  * The type of object we are working on
  */
 enum fio_filetype {
 	FIO_TYPE_FILE = 1,		/* plain file */
-	FIO_TYPE_BD,			/* block device */
+	FIO_TYPE_BLOCK,			/* block device */
 	FIO_TYPE_CHAR,			/* character device */
 	FIO_TYPE_PIPE,			/* pipe */
 };
@@ -24,6 +28,8 @@ enum fio_file_flags {
 	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 {
@@ -33,13 +39,31 @@ enum file_lock_mode {
 };
 
 /*
- * roundrobin available files, or choose one at random, or do each one
- * serially.
+ * 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_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,
 };
 
 /*
@@ -50,9 +74,9 @@ struct fio_file {
 	struct flist_head hash_list;
 	enum fio_filetype filetype;
 
-	void *file_data;
 	int fd;
-#ifdef __CYGWIN__
+	int shadow_fd;
+#ifdef WIN32
 	HANDLE hFile;
 	HANDLE ioCP;
 #endif
@@ -60,45 +84,66 @@ struct fio_file {
 	/*
 	 * filename and possible memory mapping
 	 */
-	char *file_name;
 	unsigned int major, minor;
-
-	void *mmap_ptr;
-	size_t mmap_sz;
-	off_t mmap_off;
+	int fileno;
+	int bs;
+	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;
+
+	/*
+	 * Track last end and last start of IO for a given data direction
 	 */
-	unsigned long long real_file_size;
-	unsigned long long file_offset;
-	unsigned long long io_size;
+	uint64_t last_pos[DDIR_RWDIR_CNT];
+	uint64_t last_start[DDIR_RWDIR_CNT];
 
-	unsigned long long last_pos;
-	unsigned long long last_start;
+	uint64_t first_write;
+	uint64_t last_write;
 
-	unsigned long long first_write;
-	unsigned long long 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 use by the io engine for offset or private data storage
 	 */
-	unsigned long long file_pos;
+	union {
+		uint64_t engine_pos;
+		void *engine_data;
+	};
 
 	/*
 	 * if io is protected by a semaphore, this is set
 	 */
-	struct fio_mutex *lock;
-	void *lock_owner;
-	unsigned int lock_batch;
-	enum fio_ddir lock_ddir;
+	union {
+		struct fio_mutex *lock;
+		struct fio_rwlock *rwlock;
+	};
 
 	/*
-	 * block map for random io
+	 * block map or LFSR for random io
 	 */
-	unsigned int *file_map;
-	unsigned int num_maps;
-	unsigned int last_free_lookup;
+	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;
@@ -106,14 +151,17 @@ struct fio_file {
 	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 |= FIO_FILE_##name;					\
+	(f)->flags = (enum fio_file_flags) ((f)->flags | FIO_FILE_##name);	\
 }									\
 static inline void fio_file_clear_##name(struct fio_file *f)		\
 {									\
-	(f)->flags &= ~FIO_FILE_##name;					\
+	(f)->flags = (enum fio_file_flags) ((f)->flags & ~FIO_FILE_##name);	\
 }									\
 static inline int fio_file_##name(struct fio_file *f)			\
 {									\
@@ -127,6 +175,8 @@ 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
 
 /*
@@ -135,13 +185,16 @@ FILE_FLAG_FNS(partial_mmap);
 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 *);
 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 *);
+extern int __must_check file_lookup_open(struct fio_file *f, int flags);
 extern int __must_check pre_read_files(struct thread_data *);
-extern int add_file(struct thread_data *, const char *);
+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 *);
@@ -154,15 +207,9 @@ extern int 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 *);
-
-static inline void fio_file_reset(struct fio_file *f)
-{
-	f->last_free_lookup = 0;
-	f->last_pos = f->file_offset;
-	f->last_start = -1ULL;
-	f->file_pos = -1ULL;
-	if (f->file_map)
-		memset(f->file_map, 0, f->num_maps * sizeof(int));
-}
+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 *);
 
 #endif