DMTVEC
Fixed
StorageValues DMTMAP Variable Storage
Work Area
DMTQRQ
Reserve orRelease Supervisor
QueueElements DMTPST Signal Completion of
an Event in
the SystemExternal ( Interrupt Console) DMTEXT
Process an
ExternalInterrupt DMTIOMIN Process an I/O Interrupt .1/0lnterr .. WAIT < .. I-- - - ------- I-- I-- - ------- - 'IIi ,. DMTDSP
ResumeExecu· tion ofa Task;
Enter a SystemWAIT State I I' DMTSTO Reserve Main
Storage
DMTWAT
SuspendI"-- Dispatching
for anV-- Executing Task
DMTAKE
Accept andI"-- Respond to GIVE Requests; Calls V-- DMTQRQ
DMTASKInitiate, Term· ¢::: inate and Query
Tasks;Calls DMTSVC
DMTQRQ--- Suspend
- Execution
DMTASY
of a TaskI nitiate and
Terminate¢:::: Asynchronous
Exits;Calls DMTQRQ DMTGIV Present GIVE Requests; Calls DMTQRQ
and DMTPSTDMTIOMRQ Request I/O Service; Calls
DMTQRQ and
DMTPSTDMTSIG Asynchronously I"-- ALERT Another
Task;Calls v--- DMTPST
Figure 13.program organization for Supervisor I'-- 'r- / All Task·Level Programs I 3-34 IBM VM/370: System Logic and Proble. Determination--Volu.e 3
Fixed
Storage
Work Area
DMTQRQ
Reserve or
Queue
an Event in
the System
Process an
External
Resume
Enter a System
Storage
DMTWAT
Suspend
for an
DMTAKE
Accept and
DMTASK
Tasks;
DMTQRQ
- Execution
DMTASY
of a Task
Terminate
Exits;
and DMTPST
DMTQRQ and
DMTPST
Task;
Figure 13.