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SP_GET_VS_SETS_INFO(3) User Manuals SP_GET_VS_SETS_INFO(3)
SP_get_vs_sets_info, SP_scat_get_vs_sets_info - Extract list of VS sets
from membership message
int SP_get_vs_sets_info( const char * memb_mess, vs_set_info *vs_sets,
int num_vs_sets, unsigned int *my_vs_set_index);
int SP_scat_get_vs_sets_info( const scatter * memb_mess_scat,
vs_set_info *vs_sets, int num_vs_sets, unsigned int *my_vs_set_index);
SP_get_vs_sets_info and its scatter variant extract the list of VS sets
provided in a Network membership message and store them into the
vs_sets array of vs_set_info structs. The number of elements in the
array should be provided in the num_vs_sets parameter.
This function also returns an index of which VS set in the array
corresponds to the current process's VS set. That index value is
returned in the my_vs_set_index parameter.
The memb_mess field or scatter field should be the body of a message
that was returned in a previous SP_receive call for a membership
The fields of a vs_set_info struct include
unsigned int num_members
unsigned int member_offset
The member_offset field is the byte offset into the membership message
body where this VS set's member list begins. For each of the
vs_set_info records in the array, the function SP_get_vs_set_members
will grab the actual array of member names for the specified VS set.
Returns a postivive value on success or one of the following errors ( <
The allocated array of vs_set_info structs can not hold the
number of VS sets contained in this membership message. No data
is parsed. Reallocate a larger array of vs_set_info structs
(the required number is available in the membership_info
struct) and call this function again.
Yair Amir <firstname.lastname@example.org>
Jonathan Stanton <email@example.com>
SPREAD February 2006 SP_GET_VS_SETS_INFO(3)