1QB_RB_OPEN(3)              libqb Programmer's Manual             QB_RB_OPEN(3)
2
3
4

NAME

6       qb_rb_open - Create the ring buffer with the given type.
7
8

SYNOPSIS

10       #include <qb/qbrb.h>
11
12       qb_ringbuffer_t* qb_rb_open(
13           const char   *name,   /* the unique name of this ringbuffer. */
14           size_t        size,   /* the requested size. */
15           uint32_t      flags,    /* or'ed flags */
16           size_t        shared_user_data_size                    /* size for a shared data area. */
17       );
18

PARAMS

20       name                  the unique name of this ringbuffer.
21
22       size                  the requested size.
23
24       flags                 or'ed flags
25
26       shared_user_data_size size for a shared data area.
27

DESCRIPTION

29       This creates allocates a ring buffer in shared memory.
30

RETURN VALUE

32       a new ring buffer or NULL if there was a problem.
33

NOTE

35       the actual size will be rounded up to the next page size.
36

SEE ALSO

38       qb_rb_close(3), qb_rb_refcount_get(3), qb_rb_chmod(3), qb_rb_chown(3),
39       qb_rb_write_to_file(3), qb_rb_create_from_file(3),
40       qb_rb_chunks_used(3), qb_rb_chunk_reclaim(3), qb_rb_space_used(3),
41       qb_rb_chunk_write(3), qb_rb_shared_user_data_get(3),
42       qb_rb_chunk_commit(3), qb_rb_chunk_peek(3), qb_rb_space_free(3),
43       qb_rb_name_get(3), qb_rb_chunk_alloc(3), qb_rb_chunk_read(3)
44

46       Copyright (C) 2010-2020 Red Hat, Inc.
47
48
49
50LIBQB                             2021-11-12                     QB_RB_OPEN(3)
Impressum