CPG_JOIN(3) Openais Programmer's Manual CPG_JOIN(3)NAMEcpg_join - Joins one or more groups in the CPG library
SYNOPSIS
#include <openais/cpg.h>
int cpg_join(cpg_handle_t handle, struct cpg_name *group);
DESCRIPTION
The cpg_join function is used to join one group. When a group is
joined, using the cpg_mcast_joined(3) function will multicast to the
groups joined in the argument handle. The process will also get noti‐
fications of other processes joining and leaving the group. Messages
that are sent to any of the groups joined to the parameter handle will
be delivered by cpg_dispatch(3).
This function may be only be called once for each handle. When a group
has been joined the process will start to receive callbacks relating to
messages send from members of the group or notifications of process
joining/leaving the group.
Note that more than one process can join a CPG group and each will
receive its own copy of any messages sent using cpg_mcast_joined() and
its own confchg callback.
The argument group is used to specify the group to join.
The groups argument is of the type struct cpg_name which is defined by
the structure:
struct cpg_name {
int length;
char value[128];
};
RETURN VALUE
This call returns the CPG_OK value if successful, CPG_ERR_INVALID_PARAM
if the handle is already joined to a group.
ERRORS
Not all errors are documented.
SEE ALSOcpg_overview(8), cpg_initialize(3), cpg_finalize(3), cpg_fd_get(3),
cpg_dispatch(3), cpg_leave(3), cpg_mcast_joined(3), cpg_member‐
ship_get(3)openais Man Page 2004-08-31 CPG_JOIN(3)
