!ASIS Issue #014
!topic ASIS must be "tasking-safe"
!reference ASIS95
!from ISO/IEC JTC1/SC22 WG9 96-06-21
!keywords task tasking-safe parallel processing reentrant
!discussion

This issue was created after the ISO WG9 meeting 17 June 1996 in
Montreux, Switzerland.

The original issue was brought up at discussions led by Erhard
Ploedereder at the ISO WG9 meeting referenced above.

The ASIS interfaces must be designed (and subsequently implemented) in
such a way so that they are reentrant, that is, they if multiple
concurrent tasks' threads of control call them, there will be no
mix-up of information returned to the tasks and there will be no loss
of information kept around for the multiple threads of control.

Actually, the original issue raised the question of whether or not
ASIS was tasking-safe, NOT to make it so.  If ASIS were not
tasking-safe, then a statement explicitly stating so should be in the
document.

!resolution Accepted.
!date 96-12-03
!Notes
 
A simple statement, indicating that an implementation of ASIS does not
have to have more than one thread of control, has been added to the
ASIS document, version 2.0.K.