Distributed File Lock Internals

Collaboration diagram for Distributed File Lock Internals:

Macros
#define	R_F(resource)   container_of(resource, struct m0_file, fi_res)

Functions
static bool	file_lock_equal (const struct m0_rm_resource *resource0, const struct m0_rm_resource *resource1)
static m0_bcount_t	file_lock_len (const struct m0_rm_resource *resource)
static int	file_lock_encode (struct m0_bufvec_cursor *cur, const struct m0_rm_resource *resource)
static int	file_lock_decode (struct m0_bufvec_cursor *cur, struct m0_rm_resource **resource)
static void	file_lock_credit_init (struct m0_rm_resource *resource, struct m0_rm_credit *credit)
static void	file_lock_resource_free (struct m0_rm_resource *resource)
static void	file_lock_incoming_complete (struct m0_rm_incoming *in, int32_t rc)
static void	file_lock_incoming_conflict (struct m0_rm_incoming *in)
static bool	file_lock_cr_intersects (const struct m0_rm_credit *self, const struct m0_rm_credit *c1)
static m0_bcount_t	file_lock_cr_len (const struct m0_rm_credit *c0)
static int	file_lock_cr_join (struct m0_rm_credit *self, const struct m0_rm_credit *c1)
static int	file_lock_cr_disjoin (struct m0_rm_credit *self, const struct m0_rm_credit *c1, struct m0_rm_credit *intersection)
static int	file_lock_cr_copy (struct m0_rm_credit *dest, const struct m0_rm_credit *self)
static int	file_lock_cr_diff (struct m0_rm_credit *self, const struct m0_rm_credit *c1)
static bool	file_lock_cr_conflicts (const struct m0_rm_credit *self, const struct m0_rm_credit *c1)
static bool	file_lock_cr_is_subset (const struct m0_rm_credit *self, const struct m0_rm_credit *c1)
static int	file_lock_cr_encode (struct m0_rm_credit *self, struct m0_bufvec_cursor *cur)
static int	file_lock_cr_decode (struct m0_rm_credit *self, struct m0_bufvec_cursor *cur)
static void	file_lock_cr_free (struct m0_rm_credit *self)
static void	file_lock_cr_initial_capital (struct m0_rm_credit *self)
static int	file_lock_encdec (struct m0_file *file, struct m0_bufvec_cursor *cur, enum m0_xcode_what what)
static bool	file_lock_credit_invariant (const struct m0_rm_credit *file_cr)
static int	file_lock_cr_encdec (struct m0_rm_credit *self, struct m0_bufvec_cursor *cur, enum m0_xcode_what what)

Variables
const struct m0_rm_resource_type_ops	file_lock_type_ops
const struct m0_rm_resource_ops	file_lock_ops
const struct m0_rm_credit_ops	file_lock_credit_ops
const struct m0_rm_incoming_ops	file_lock_incoming_ops

Detailed Description

This section contains the functions that are internal to the distributed file lock. They implement various resource manager ops.

See also

Overview and Logical Specification

Macro Definition Documentation

R_F

#define R_F

(

resource

)

container_of(resource, struct m0_file, fi_res)

Definition at line 220 of file file.c.

Function Documentation

file_lock_cr_conflicts()

static bool file_lock_cr_conflicts ( const struct m0_rm_credit *  self, const struct m0_rm_credit *  c1  )

static

Definition at line 418 of file file.c.

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file_lock_cr_copy()

static int file_lock_cr_copy ( struct m0_rm_credit *  dest, const struct m0_rm_credit *  self  )

static

Definition at line 393 of file file.c.

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file_lock_cr_decode()

static int file_lock_cr_decode ( struct m0_rm_credit *  self, struct m0_bufvec_cursor *  cur  )

static

Definition at line 455 of file file.c.

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file_lock_cr_diff()

static int file_lock_cr_diff ( struct m0_rm_credit *  self, const struct m0_rm_credit *  c1  )

static

Definition at line 406 of file file.c.

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file_lock_cr_disjoin()

static int file_lock_cr_disjoin ( struct m0_rm_credit *  self, const struct m0_rm_credit *  c1, struct m0_rm_credit *  intersection  )

static

Definition at line 386 of file file.c.

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file_lock_cr_encdec()

static int file_lock_cr_encdec ( struct m0_rm_credit *  self, struct m0_bufvec_cursor *  cur, enum m0_xcode_what  what  )

static

Definition at line 436 of file file.c.

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file_lock_cr_encode()

static int file_lock_cr_encode ( struct m0_rm_credit *  self, struct m0_bufvec_cursor *  cur  )

static

Definition at line 448 of file file.c.

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file_lock_cr_free()

static void file_lock_cr_free ( struct m0_rm_credit *  self )

static

Definition at line 461 of file file.c.

file_lock_cr_initial_capital()

static void file_lock_cr_initial_capital ( struct m0_rm_credit *  self )

static

Definition at line 466 of file file.c.

file_lock_cr_intersects()

static bool file_lock_cr_intersects ( const struct m0_rm_credit *  self, const struct m0_rm_credit *  c1  )

static

Definition at line 357 of file file.c.

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file_lock_cr_is_subset()

static bool file_lock_cr_is_subset ( const struct m0_rm_credit *  self, const struct m0_rm_credit *  c1  )

static

Definition at line 428 of file file.c.

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file_lock_cr_join()

static int file_lock_cr_join ( struct m0_rm_credit *  self, const struct m0_rm_credit *  c1  )

static

Definition at line 380 of file file.c.

file_lock_cr_len()

static m0_bcount_t file_lock_cr_len ( const struct m0_rm_credit *  c0 )

static

Definition at line 366 of file file.c.

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file_lock_credit_init()

static void file_lock_credit_init ( struct m0_rm_resource *  resource, struct m0_rm_credit *  credit  )

static

Initialises credit (lock state) and ops vector for the file_lock

Definition at line 321 of file file.c.

file_lock_credit_invariant()

static bool file_lock_credit_invariant ( const struct m0_rm_credit *  file_cr )

static

Definition at line 352 of file file.c.

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file_lock_decode()

static int file_lock_decode ( struct m0_bufvec_cursor *  cur, struct m0_rm_resource **  resource  )

static

Decode file_lock - from the wire

Definition at line 295 of file file.c.

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file_lock_encdec()

static int file_lock_encdec ( struct m0_file *  file, struct m0_bufvec_cursor *  cur, enum m0_xcode_what  what  )

static

• Todo:

  ->rto_decode() decode for file resource should create an entire ambient object: an inode on client and a cob on server.

Definition at line 258 of file file.c.

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file_lock_encode()

static int file_lock_encode ( struct m0_bufvec_cursor *  cur, const struct m0_rm_resource *  resource  )

static

Encode file_lock - ready to send over the wire

Definition at line 280 of file file.c.

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file_lock_equal()

static bool file_lock_equal ( const struct m0_rm_resource *  resource0, const struct m0_rm_resource *  resource1  )

static

Compare Ids of two file locks

Definition at line 223 of file file.c.

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file_lock_incoming_complete()

static void file_lock_incoming_complete ( struct m0_rm_incoming *  in, int32_t  rc  )

static

Lock request completion callback

Definition at line 339 of file file.c.

file_lock_incoming_conflict()

static void file_lock_incoming_conflict ( struct m0_rm_incoming *  in )

static

Lock request conflict callback

Definition at line 346 of file file.c.

file_lock_len()

static m0_bcount_t file_lock_len ( const struct m0_rm_resource *  resource )

static

Definition at line 237 of file file.c.

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file_lock_resource_free()

static void file_lock_resource_free ( struct m0_rm_resource *  resource )

static

Definition at line 329 of file file.c.

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Variable Documentation

file_lock_credit_ops

const struct m0_rm_credit_ops file_lock_credit_ops

Initial value:

= {
        .cro_intersects      = file_lock_cr_intersects,
        .cro_join            = file_lock_cr_join,
        .cro_copy            = file_lock_cr_copy,
        .cro_diff            = file_lock_cr_diff,
        .cro_free            = file_lock_cr_free,
        .cro_encode          = file_lock_cr_encode,
        .cro_decode          = file_lock_cr_decode,
        .cro_len             = file_lock_cr_len,
        .cro_is_subset       = file_lock_cr_is_subset,
        .cro_disjoin         = file_lock_cr_disjoin,
        .cro_conflicts       = file_lock_cr_conflicts,
        .cro_initial_capital = file_lock_cr_initial_capital,
}

Definition at line 200 of file file.c.

file_lock_incoming_ops

const struct m0_rm_incoming_ops file_lock_incoming_ops

Initial value:

= {
        .rio_complete = file_lock_incoming_complete,
        .rio_conflict = file_lock_incoming_conflict
}

Definition at line 215 of file file.c.

file_lock_ops

const struct m0_rm_resource_ops file_lock_ops

Initial value:

= {
        .rop_credit_init   = file_lock_credit_init,
        .rop_resource_free = file_lock_resource_free,
}

Definition at line 195 of file file.c.

file_lock_type_ops

const struct m0_rm_resource_type_ops file_lock_type_ops

Initial value:

= {
        .rto_eq     = file_lock_equal,
        .rto_len    = file_lock_len,
        .rto_decode = file_lock_decode,
        .rto_encode = file_lock_encode,
}

Definition at line 188 of file file.c.