Check file and if it doesnt exist , exit script Post: 302334725

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cpg_zcb_mcast_joined

CPG_ZCB_MCAST_JOINED(3) 			    Corosync Cluster Engine Programmer's Manual 			   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 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)
       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 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 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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