Arguments

 

barrier-id

   OpenVMS usage identifier
   type          longword (unsigned)
   access        write only
   mechanism     by reference
   Identifier of the barrier. The barrier-id argument is the address
   of an unsigned longword containing the identifier. Barrier-id
   must be used in calls to the other barrier routines (listed in
   the Description section) to identify the barrier.
 

barrier-name

   OpenVMS usage char_string
   type          character string
   access        read only
   mechanism     by descriptor
   Name of the barrier. The optional barrier-name argument is the
   address of a descriptor pointing to a character string containing
   the barrier name. The name of the barrier is arbitrary. If you
   do not specify this argument, or if you specify 0, an unnamed
   barrier is created. An arbitrary number of unnamed barriers may
   be created by a given application.
 

quorum

   OpenVMS usage word_signed
   type          word (signed)
   access        read only
   mechanism     by reference
   Number of participants required to terminate an active wait for
   this barrier. The quorum argument is the address of a signed
   word containing the quorum number. For example, a quorum value
   of 3 indicates that the first two callers of PPL$WAIT_AT_BARRIER
   specifying this barrier-id are blocked until a third caller calls
   PPL$WAIT_AT_BARRIER. At that point, all three participants are
   released for further processing. If you do not specify a value
   for quorum, a default value of 1 is assigned.