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

NAME

       evs_initialize - Create a new connection to the EVS service

SYNOPSIS

       #include <corosync/evs.h>

       int evs_initialize(evs_handle_t *handle, evs_callbacks_t *callbacks);

DESCRIPTION

       The  evs_initialize  function  is  used to initialize a connection to the extended virtual
       synchrony API.

       Each application may have several connections to the EVS API.  Each  application uses  the
       handle  argument to uniquely identify the connection.  The handle argument is then used in
       other function calls to identify the connection to be used for communication with the  EVS
       service.

       Every  time  an EVS event occurs, one of the callbacks specified by the argument callbacks
       is called.  The callback functions are described by the following type definitions:

              typedef void (*evs_deliver_fn_t) (
                  unsigned int nodeid,
                      const void *msg,
                      size_t msg_len);

              typedef void (*evs_confchg_fn_t) (
                  unsigned int *member_list, size_t member_list_entries,
                  unsigned int *left_list, size_t left_list_entries,
                  unsigned int *joined_list, size_t joined_list_entries);

       The callbacks argument is of the type:

              typedef struct {
                      evs_deliver_fn_t evs_deliver_fn;
                      evs_confchg_fn_t evs_confchg_fn;
              } evs_callbacks_t;

       When a configuration change occurs or a message is to be delivered one of the callbacks is
       called from the evs_dispatch() function.  If a configuration change occurs, evs_confchg_fn
       is called.  If a delivery of a message occurs, evs_deliver_fn is called.

RETURN VALUE

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

ERRORS

       The errors are undocumented.

SEE ALSO

       evs_overview(8),    evs_finalize(3),    evs_fd_get(3),    evs_dispatch(3),    evs_join(3),
       evs_leave(3),     evs_mcast_joined(3),     evs_mcast_groups(3),     evs_mmembership_get(3)
       evs_context_get(3) evs_context_set(3)