cpg_zcb_mcast_joined man page on Scientific

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CPG_ZCB_MCAST_JOINCorosync Cluster Engine Programmer's CPG_ZCB_MCAST_JOINED(3)

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  guaran‐
       tee, 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)
       funtion	for the same group name.  Messages that are sent to any of the
       groups joined to the parameter handle will be  delivered	 to  all  sub‐
       scribed 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 mes‐
	      sage 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 trans‐
       mit 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 CPG_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)

corosync Man Page		  3004-08-31	       CPG_ZCB_MCAST_JOINED(3)
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