NAME

       cpg_mcast_joined - Multicasts a zero copy buffer to all groups joined to a handle

SYNOPSIS

       #include <sys/uio.h> #include <corosync/cpg.h>

       int   cpg_zcb_mcast_joined(cpg_handle_t  handle,  cpg_guarantee_t  guarantee,  const  void
       *buffer,int msg_len );

DESCRIPTION

       The cpg_zcb_mcast_joined function will multicast a zero copy buffer  message  to  all  the
       processes  that  have  been  joined with the cpg_join(3) function for the same group name.
       Messages that are sent to any of the  groups  joined  to  the  parameter  handle  will  be
       delivered to all subscribed processes in the system.

       The  argument  guarantee  requests  a  delivery guarantee for the message to be sent.  The
       cpg_guarantee_t type is defined by:

              typedef enum {
                      CPG_TYPE_UNORDERED,     /* not implemented */
                      CPG_TYPE_FIFO,          /* same as agreed */
                      CPG_TYPE_AGREED,        /* implemented */
                      CPG_TYPE_SAFE           /* not implemented */
              } cpg_guarantee_t;

       The meanings of the cpg_guarantee_t typedef are:

       CPG_TYPE_UNORDERED
              Messages are guaranteed to be delivered, but with no particular order.   This  mode
              is unimplemented in the CPG library.

       CPG_TYPE_FIFO
              Messages  are  guaranteed  to  be delivered in first sent first delivery order.  In
              fact, this guarantee is equivalent to the CPG_TYPE_AGREED guarantee.

       CPG_TYPE_AGREED
              All processors must agree on the order of delivery.  If a message is sent from  two
              or more processes at about the same time, the delivery will occur in the same order
              to all processes.

       CPG_TYPE_SAFE
              All processes must agree on the order of delivery.  Further all processes must have
              a  copy of the message before any delivery takes place.  This mode is unimplemented
              in the CPG library.

       The msg argument describes the zero copy buffer which is used to transmit a message.  this
       buffer must be allocated by cpg_zcb_alloc(3).

       The  msg_len  argument  describes  the  number of bytes to be transmitted in the zero copy
       buffer.

RETURN VALUE

       This call returns the CS_OK value if successful, otherwise an error is returned.

ERRORS

       The errors are undocumented.

SEE ALSO

       cpg_overview(8),  cpg_initialize(3),  cpg_finalize(3),   cpg_fd_get(3),   cpg_dispatch(3),
       cpg_join(3),  cpg_leave(3),  cpg_mcast_joined(3),  cpg_membership_get(3)  cpg_zcb_alloc(3)
       cpg_zcb_free(3)     cpg_zcb_mcast_joined(3)     cpg_context_get(3)      cpg_context_set(3)
       cpg_local_get(3)

       CS_ERR_TRY_AGAIN Resource temporarily unavailable

       CS_ERR_INVALID_PARAM Invalid argument

       CS_ERR_ACCESS Permission denied

       CS_ERR_LIBRARY The connection failed

       CS_ERR_INTERRUPT System call interrupted by a signal

       CS_ERR_NOT_SUPPORTED The requested protocol/functionality not supported

       CS_ERR_MESSAGE_ERROR Incorrect auth message received

       CS_ERR_NO_MEMORY Not enough memory to complete the requested task