Provided by: corosync-dev_1.4.2-2_amd64 bug


       cpg_mcast_joined - Multicasts to all groups joined to a handle


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

       int  cpg_mcast_joined(cpg_handle_t handle, cpg_guarantee_t guarantee, struct iovec *iovec,
       int iov_len);


       The cpg_mcast_joined function will multicast a 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:

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

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

              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.

              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 iovec argument describes the scatter/gather list which is used to transmit a  message.
       This is a iovec described by:

              struct iovec
                      void *iov_base;     /* Pointer to data.  */
                      unsigned int iov_len;     /* Length of data.  */

       The iov_len argument describes the number of entires in the iovec argument.


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


       The errors are undocumented.


       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)