Arguments

 

barrier-id

   OpenVMS usage identifier
   type          longword (unsigned)
   access        read only
   mechanism     by reference
   Identifier of the barrier. The barrier-id argument is the address
   of an unsigned longword containing the barrier identifier.

   Barrier-id is returned by PPL$CREATE_BARRIER.
 

flags

   OpenVMS usage identifier
   type          longword (unsigned)
   access        read only
   mechanism     by reference
   Specifies options for the wait_at_barrier operation. The flags
   argument is the value of a longword bit mask containing the flag.
   The bit, when set, specifies the corresponding option. Valid
   values for flags are as follows:

   PPL$M_SPIN_WAIT    Indicates that the caller is never to block,
                      but rather to always spin while waiting at
                      this barrier.
   PPL$M_SPIN_        Indicates that the caller wishes to spin for
   COUNTED            a given amount of instructions and then to
                      block.

   The default is block immediately, do not spin at all.
 

spin

   OpenVMS usage identifier
   type          long (unsigned)
   access        read only
   mechanism     by reference
   This value must be specified when using the PPL$M_SPIN_COUNTED
   flag and represents a relative time that a process will spin
   before blocking.