Guardian Procedure Calls Reference Manual (G06.25+)

Guardian Procedure Calls (M)
Guardian Procedure Calls Reference Manual—522629-013
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MESSAGESTATUS Procedure
certain forms of AWAITIO; cancellation will also be caused by a stop of the
originating process, failure of the originator’s processor, or a network
communication failure.
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This procedure is best used for a program that is concerned about one particular
request. If a program deals with many requests concurrently and constantly
monitors $RECEIVE, use of system message -38 (queued message cancellation)
may be more appropriate. You can be notified when pending messages are
canceled with a system message -38 if SETMODE 80 has been enabled (see
SETMODE).
Related Programming Manual
For programming information about the MESSAGESTATUS procedure, refer to the
Guardian Programmer’s Guide.