table of contents
QB_RB_OPEN(3) | libqb Programmer's Manual | QB_RB_OPEN(3) |
NAME¶
qb_rb_open - Create the ring buffer with the given type.
SYNOPSIS¶
#include <qb/qbrb.h> qb_ringbuffer_t * qb_rb_open(
const char *name, /* the unique name of this ringbuffer. */
size_t size, /* the requested size. */
uint32_t flags, /* or'ed flags */
size_t shared_user_data_size /* size for a shared data area. */ );
PARAMS¶
name the unique name of this ringbuffer.
size the requested size.
flags or'ed flags
shared_user_data_size size for a shared data area.
DESCRIPTION¶
This creates allocates a ring buffer in shared memory.
RETURN VALUE¶
a new ring buffer or NULL if there was a problem.
NOTE¶
the actual size will be rounded up to the next page size.
SEE ALSO¶
qb_rb_close(3), qb_rb_refcount_get(3), qb_rb_chmod(3), qb_rb_chown(3), qb_rb_write_to_file(3), qb_rb_create_from_file(3), qb_rb_chunks_used(3), qb_rb_chunk_reclaim(3), qb_rb_space_used(3), qb_rb_chunk_write(3), qb_rb_shared_user_data_get(3), qb_rb_chunk_commit(3), qb_rb_chunk_peek(3), qb_rb_space_free(3), qb_rb_name_get(3), qb_rb_chunk_alloc(3), qb_rb_chunk_read(3)
COPYRIGHT¶
Copyright (C) 2010-2020 Red Hat, Inc.
2023-07-24 | LIBQB |