TOPS-10 Monitor Calls Manual Volume 2 AA-K039D ... - Trailing-Edge

PIJBI [CALLI 175]
22.125 PIJBI. [CALLI 175]
FUNCTION
The PIJBI. monitor call allows one job to interrupt another with a
software interrupt. The interrupted job must be waiting for the
interrupt; it cannot be busy handling a previous interrupt. The
receiver enables cross-job interrupts by using the PISYS. UUO (non-I/O
condition .PCJBI).
CALLING SEQUENCE
MOVE ac, [XWD target,status]
PIJBI. ac,
error return
skip return
In the calling sequence, the program supplies the following variables:
o target is either the job context number of the job to
interrupt, or the job number of the job to interrupt.
o status is the status of the interrupt. The status word is
described in Volume 1.
Specifically, the ac contains the following:
Bits
0-8
9-17
18-35
Symbol
PS.CTX
PS.JOB
PS.STS
Contents
Context number or zero.
Job number. (A -1 in the left half of this
word indicates the job that is executing
the monitor call.)
status.
The job to be interrupted must be enabled for cross-job interrupts or
else the call will fail. Note that this situation requires
cooperation between two jobs, much like ENQ/DEQ or IPCF. If the
target job is processing an interrupt, the sender must try again
because requests are not queued.
SKIP RETURN
The interrupted job will receive a word of the following form:
[source"status]
In the argument word:
o source is the job context number of the job that performed
the PIJBI. call.
o
status is the status that the job included in the call.
22-312