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sources/diu/diujb2.b36
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%TITLE 'DIU Slave Job Control Routines'
MODULE DIUJB2 (IDENT = '253',
ENTRY(j$start, ! Start a subjob
j$kill, ! Kill a subjob
j$death, ! Process job death notice
abort ! Abort a chain of dependent requests
)
) =
BEGIN
!++
! COPYRIGHT (C) DIGITAL EQUIPMENT CORPORATION 1986.
! ALL RIGHTS RESERVED.
!
! THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND
! COPIED ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH
! THE INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR
! ANY OTHER COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE
! AVAILABLE TO ANY OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE
! SOFTWARE IS HEREBY TRANSFERRED.
!
! THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT
! NOTICE AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL
! EQUIPMENT CORPORATION.
!
! DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF
! ITS SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY DIGITAL.
!
! FACILITY:
!
! Data Interchange Utility.
!
! ABSTRACT:
!
! This module contains the job controller for DIU-20. Each queued
! request is processed by creating a job with the CRJOB JSYS, with DIU as
! the top fork, loading the request number, job handle and a unique
! number into the job's ACs, then starting the job at the CCL entry
! point. This module handles job creation, deletion, and monitoring.
!
! ENVIRONMENT:
!
! BLISS-36 V4 TOPS-20 V6.1 XPORT V4
! HISTORY:
!
! 253 Change IPCF20 library to DIUIP2.
! Gregory A. Scott 1-Jul-86
!
! 200 If the IPCLO message specifies that a job that killed the slave job is
! -1, then the job that killed the slave job has already logged out.
! Gregory A. Scott 22-May-86
!
! 154 Write better information in the user log when the job can't be created.
! Rename s$crejob to j$create (since the s$ prefix implies DIUT20).
! Rename kill_job to j$kill. Rename start_job to j$start. Remove
! s$kiljob. Rename s$death to j$death.
! Gregory A. Scott 12-May-86
!
! 152 Give error messages to user log file when the job is cancelled/aborts.
! Use new routines lj$event and lj$uevent.
! Gregory A. Scott 11-May-86
!
! 147 Delete references to usrlog.
! Gregory A. Scott 8-May-86
!
! 134 Give a little better message when killing a job.
! Gregory A. Scott 30-Apr-86
!
! 126 Module name should match filename, so now this module is called DIUJB2.
! S$TIMINT was being called without a channel argument, making the
! interrupt system goofy; S$TIMINT now uses t_channel always.
! Gregory A. Scott 26-Apr-86
!
! 122 Range of error messages checked from CRJOB in S$CREJOB should be
! [OPNX12 TO OPNX1] rather than [OPNX12 TO 18]. Abort requests that have
! jobs that cannot be created. Say nothing about jobs not mine logging
! out since this it is possible to get a CRJOB death interrupt on a CRJOB
! failure (this is apparently a monitor "feature").
! Gregory A. Scott 22-Apr-86
!
! 47 Make routine S$CREJOB return more intelligent messages after
! CRJOB JSYS call. Also, make it return secondary error message.
! Sandy Clemens 4-Nov-85
!--
! TABLE OF CONTENTS:
FORWARD ROUTINE
j$start : NOVALUE, ! Start a subjob
j$kill, ! Kill an active subjob
reljsb : NOVALUE, ! Release JOBSTATUS block
j$create, ! Create and start job
j$death : NOVALUE, ! Process job death notice
dispose : NOVALUE, ! Dispose of a job properly
abort : NOVALUE; ! Abort a chain of dependent requests
! INCLUDE FILES:
LIBRARY 'BLI:XPORT';
LIBRARY 'TOPS20';
LIBRARY 'DIU';
LIBRARY 'DIUIP2';
! EQUATED SYMBOLS:
LITERAL
requeue_time = (%O'1000000' / (24 * 60)) * 10; ! Ten minutes
! OWN STORAGE:
OWN
acjrequeue : INITIAL (1); ![5] PATCHABLE nonzero to requeue on ACJ failures
GLOBAL
jobstatus : BLOCKVECTOR [DIU$K_MAX_MJOB, DIUJ$K_LEN]
FIELD (DIUJ$$JOBSTAT_FIELDS);
OWN
serial_number : INITIAL (1);
! EXTERNAL REFERENCES:
EXTERNAL
njob, ! Number of jobs currently actice
shutdown, ! 1 if shutdown in progress
rcvpid; ! Spooler's named pid
EXTERNAL ROUTINE
lj$event, ! Log an event about slave to sys log
l$event, ! Log an event to sys log
lj$uevent, ! Log an event about slave to user log
l$uevent, ! Log an event to user log
q$pick, ! Pick a request from the queue
q$modify, ! Modify a request
q$reque, ! Requeue a request
q$find, ! Find a chain of requests
q$delete, ! Delete a request
q$release_chain : NOVALUE, ! Free memory returned by q$find
a$account : NOVALUE, ! Perform usage accounting
s$time, ! Return system time
s$timint : NOVALUE, ! Set timer interrupt
s$noint : NOVALUE, ! Turn off interrupt system
s$okint : NOVALUE, ! Turn on interrupt system
s$jobno, ! Return the job number
s$jobusr, ! Get user number from job number
s$username : NOVALUE, ! Get user name from user number
sp$shut : NOVALUE, ! shutdown the spooler
notify : NOVALUE, ! Notify the user of an event
sched : NOVALUE, ! Schedule jobs for running
q$req_block_init : NOVALUE; ! Zero a fresh request block
GLOBAL ROUTINE j$start (p_req_block) : NOVALUE =
BEGIN
!++
! FUNCTIONAL DESCRIPTION:
!
! Start a job. Must be called with interrupts disabled (S$NOINT).
!
! FORMAL PARAMETERS:
!
! p_req_block: pointer to request block
!--
BIND req_block = .p_req_block : $DIU_BLOCK;
LOCAL job_handle,
job,
retcode,
fail_mess_desc : $STR_DESCRIPTOR(CLASS=DYNAMIC);
! Find a free job status block.
job_handle = (INCR index FROM 0 TO DIU$K_MAX_MJOB - 1
DO IF NOT .jobstatus[.index, DIUJ$V_INUSE]
THEN EXITLOOP .index);
IF .job_handle EQL -1 ! We must be able to find one
THEN SIGNAL (DIU$_BUG);
! Assign and init job status block
serial_number = .serial_number + 1;
jobstatus[.job_handle, DIUJ$G_SERIAL_NUMBER] = .serial_number;
jobstatus[.job_handle, DIUJ$V_BITS] = 0;
jobstatus[.job_handle, DIUJ$V_INUSE] = 1;
jobstatus[.job_handle, DIUJ$G_JOB_CREATE_TIME] = s$time();
jobstatus[.job_handle, DIUJ$H_REQUEST_ID] = .req_block[DIU$H_REQUEST_ID];
jobstatus[.job_handle, DIUJ$G_BLOCKS_READ] = 0;
jobstatus[.job_handle, DIUJ$G_BLOCKS_WRITTEN] = 0;
jobstatus[.job_handle, DIUJ$G_PACKETS_XFERRED] = 0;
jobstatus[.job_handle, DIUJ$G_LAST_ERROR] = 0;
jobstatus[.job_handle, DIUJ$G_2ND_CODE] = 0;
jobstatus[.job_handle, DIUJ$A_REQ_BLOCK] = 0;
jobstatus[.job_handle, DIUJ$G_JOB_RUNTIME] = 0; ![4]
$STR_DESC_INIT (DESCRIPTOR = jobstatus[.job_handle, DIUJ$T_EXTRA_TEXT],
CLASS = DYNAMIC);
! Count this job as active for now. If it doesn't get started we still get
! a subjob death message from the monitor.
njob = .njob + 1; ! Count it as active please
! Try to create and start the job
IF retcode = j$create (.req_block[DIU$H_REQUEST_ID], job, .job_handle)
THEN BEGIN
jobstatus[.job_handle, DIUJ$H_JOB_NUMBER] = .job;
RETURN(DIU$_NORMAL);
END;
! Job creation failed. Start a string to describe the failure
$STR_DESC_INIT(DESC=fail_mess_desc, CLASS=DYNAMIC,
STRING=$STR_CONCAT('Request ',
$STR_ASCII (.req_block[DIU$H_REQUEST_ID]),
' (',
(.req_block[DIU$H_JOBNAME],
CH$PTR (req_block[DIU$T_JOBNAME])),
') '));
! See if we are requeueing the request or cancelling it. If we failed because
! there was a serious CRJOB failure or acj denied access (and we are not
! requeueing that), requeue the job; otherwise, cancel the the request.
IF (.retcode EQL DIU$_CANT_CREATE_JOB)
OR (.retcode EQL DIU$_ACJ_DENIED_ACCESS AND .acjrequeue EQL 0)
THEN BEGIN ! We want to cancel the request
jobstatus[.job_handle, DIUJ$V_FLUSH_REQUEST] = 1;
jobstatus[.job_handle, DIUJ$G_LAST_ERROR] = .retcode;
jobstatus[.job_handle, DIUJ$G_2ND_CODE] = .job;
$STR_APPEND(TARGET = fail_mess_desc,
STRING = 'killed');
$STR_COPY(TARGET = jobstatus[.job_handle, DIUJ$T_EXTRA_TEXT],
STRING = fail_mess_desc);
dispose(.job_handle); ! Get rid of this guy
END
ELSE BEGIN ! we want to requeue the request
$STR_APPEND(TARGET = fail_mess_desc,
STRING = 'requeued');
q$reque (.req_block[DIU$H_REQUEST_ID]); ! Requeue
s$timint(s$time()+requeue_time); ! Post timer interrupt
END;
! Log what we were doing
L$UEVENT(.retcode, .job, fail_mess_desc, req_block); ! User log
L$EVENT(.retcode, .job, fail_mess_desc); ! System log
! Clean up after ourselves and return
$XPO_FREE_MEM(STRING=fail_mess_desc); ! Thanks for the memory
reljsb(.job_handle); ! Release job stg block stg
END; ! j$start
GLOBAL ROUTINE j$kill (request_ID, reason) =
!++
! FUNCTIONAL DESCRIPTION:
! Kill an active job. This routine logs out the slave job, and sets
! some flags so that when the monitor's report of the job's logging
! out arrives, the request is deleted and the user notified.
!
! FORMAL PARAMETERS:
! request_ID - obvious
!
! IMPLICIT INPUTS:
! jobstatus table
!
! IMPLICIT OUTPUTS:
! jobstatus table
!
! ROUTINE VALUE and
! COMPLETION CODES:
! The jobstatus handle is returned, or -1 if no entry exists.
!
! SIDE EFFECTS:
! NONE
!
!--
BEGIN
LOCAL
job_handle;
s$noint ();
job_handle =
(INCR index FROM 0 TO DIU$K_MAX_MJOB - 1
DO
IF .jobstatus[.index, DIUJ$H_REQUEST_ID] EQL .request_ID
AND .jobstatus[.index, DIUJ$V_INUSE]
THEN
EXITLOOP .index);
!
! If we can't find it, maybe it already finished on its own. If so,
! or if logout already pending, just quit.
!
IF (.job_handle EQL -1)
THEN
BEGIN
s$okint ();
RETURN (-1)
END;
!
! OK, zap the sucker.
!
jobstatus[.job_handle, DIUJ$V_FLUSH_REQUEST] = 1;
jobstatus[.job_handle, DIUJ$V_FORCED_LOGOUT_PENDING] = 1;
jobstatus[.job_handle, DIUJ$G_LAST_ERROR] = .reason;
LGOUT(.jobstatus[.job_handle, DIUJ$H_JOB_NUMBER]);
s$okint ();
RETURN (.job_handle)
END; ! End of j$kill
ROUTINE reljsb (job_handle) : NOVALUE =
!++
! FUNCTIONAL DESCRIPTION:
! Release job status block.
!
! FORMAL PARAMETERS:
! job_handle - index into jobstatus table
!
! IMPLICIT INPUTS:
! NONE
!
! IMPLICIT OUTPUTS:
! NONE
!
! ROUTINE VALUE and
! COMPLETION CODES:
! NONE
!
! SIDE EFFECTS:
! NONE
!
!--
BEGIN
LOCAL req_block : REF $DIU_BLOCK;
IF .job_handle GTR DIU$K_MAX_MJOB - 1
OR NOT .jobstatus[.job_handle, DIUJ$V_INUSE]
THEN
SIGNAL (DIU$_BUG);
!
! Release request block if we have one
!
IF (req_block = .jobstatus[.job_handle, DIUJ$A_REQ_BLOCK]) NEQ 0
THEN
$XPO_FREE_MEM (BINARY_DATA = (DIU$K_LEN, .req_block, UNITS));
jobstatus[.job_handle, DIUJ$A_REQ_BLOCK] = 0;
!
! Release extra text string, if any
!
$XPO_FREE_MEM (STRING = jobstatus[.job_handle, DIUJ$T_EXTRA_TEXT]);
!
! Free up this jobstatus slot
!
jobstatus[.job_handle, DIUJ$V_BITS] = 0;
jobstatus[.job_handle, DIUJ$H_REQUEST_ID] = 0;
jobstatus[.job_handle, DIUJ$H_JOB_NUMBER] = 0;
!
! Decrement count of active streams. If now zero, and shutdown pending,
! finish the shutdown.
!
IF (njob = .njob - 1) EQL 0
THEN IF .shutdown
THEN SP$SHUT();
END; ! End of reljsb
ROUTINE j$create (req_id, job, job_handle) =
!++
! FUNCTIONAL DESCRIPTION:
! Create, log in, and start a job to process a specified request.
!
! FORMAL PARAMETERS:
! req_id - request_ID to process
! job - addr of cell in which to return job number of created job
! job_handle - index into jobstatus table
!
! IMPLICIT INPUTS:
! NONE
!
! IMPLICIT OUTPUTS:
! The cell whose address is in JOB is updated with the job number of the
! created job. We allocate dynamic memory for a request block and link
! it to the jobstatus block. This block must be released (eventually)
! by the caller.
!
! COMPLETION CODES:
! DIU$_NORMAL - successful completion
! DIU$_NO_JOB_SLOTS - system full
! or any error code returned from q$pick
!
! SIDE EFFECTS:
! Many. A job is created and logged in. The monitor is instructed
! to send an IPCF message to .rcvpid when the job is logged out.
!
!--
BEGIN
! If DEBUG mode, don't start job until attached to (CJ_WTA)
! and use DIUDEB.EXE instead of DIU.EXE
BIND cjbits=UPLIT(%IF %SWITCHES (DEBUG) %THEN CJ_WTA OR %FI
CJ_LOG OR CJ_NAM OR CJ_FIL OR CJ_ACS OR CJ_NPW
OR CJ_NUD OR CJ_SLO OR CJ_CAM OR FLD($CJUAA, CJ_ACT)),
cjfile=UPLIT(%IF %SWITCHES (DEBUG)
%THEN %ASCIZ 'SYS:DIUDEB.EXE'
%ELSE %ASCIZ 'SYS:DIU.EXE'
%FI);
LOCAL
retcode,
p_req_block,
crjob_args : VECTOR [$CJSLO + 1],
crjob_acs : VECTOR [16],
job_number;
$XPO_GET_MEM (UNITS = DIU$K_LEN, RESULT = p_req_block);
!
! Block to hold bound value of req_block
!
BEGIN
BIND
req_block = .p_req_block : $DIU_BLOCK;
q$req_block_init (req_block);
!
! Fetch request block and mark request as active
!
req_block[DIU$H_REQUEST_ID] = .req_ID;
IF NOT (retcode = q$pick (req_block))
THEN
BEGIN
$XPO_FREE_MEM (BINARY_DATA = (DIU$K_LEN, req_block, UNITS));
RETURN (.retcode);
END;
!
! Link request block to jobstatus block
!
jobstatus[.job_handle, DIUJ$A_REQ_BLOCK] = req_block;
!
! Set up CRJOB arguments
!
crjob_args[$CJNAM] = CH$PTR (req_block[DIU$T_USERNAME]);
crjob_args[$CJPSW] = 0;
crjob_args[$CJACT] = CH$PTR (req_block[DIU$T_ACCOUNT]);
crjob_args[$CJFIL] = CH$PTR (CjFile);
crjob_args[$CJSFV] = 1;
crjob_args[$CJTTY] = $NULIO;
crjob_args[$CJTIM] = 0;
crjob_args[$CJACS] = crjob_acs;
crjob_args[$CJEXF] = 0;
crjob_args[$CJPRI] = ($NULIO ^ 18) + $NULIO;
crjob_args[$CJCPU] = 0;
crjob_args[$CJCAM] = .req_block[DIU$G_CAPABILITIES];
crjob_args[$CJSLO] = .rcvpid;
!
! Put the request-ID into AC15 of slave job (1st formal of main rtn),
! the job handle into AC9 of slave job (2nd formal of main rtn),
! and serial number into AC7 of slave job (3rd formal of main rtn)
!
crjob_acs[15] = .req_ID;
crjob_acs[9] = .job_handle;
crjob_acs[7] = .jobstatus[.job_handle, DIUJ$G_SERIAL_NUMBER];
!
! Try to create the job.
!
IF CRJOB( .cjbits, crjob_args, 0; job_number )
THEN
BEGIN
(.job) = .job_number;
RETURN (DIU$_NORMAL)
END
ELSE
BEGIN
.job = .job_number; ! Pass back the TOPS-20 error code
RETURN ( ! Return DIU error code
SELECTONE .job_number
OF
SET
[GJFX1 TO GJFX24, GJFX27, GJFX28, ! GTJFN/OPENF errors
GJFX30 TO GJFX35, GJFX36, GJFX39,
GJFX40, GJFX44, GJFX45 TO GJFX47,
OPNX1 TO OPNX10, OPNX12 TO OPNX18]: DIU$_CANT_GET_DIU;
[GOKER2] : DIU$_ACJ_DENIED_ACCESS;
[CRJBX6] : DIU$_NO_JOB_SLOTS;
[OTHERWISE] : DIU$_CANT_CREATE_JOB;
TES
);
END;
END;
END; ! End of j$create
GLOBAL ROUTINE j$death (p_pdb) : NOVALUE =
!++
! FUNCTIONAL DESCRIPTION:
!
! Process a monitor-generated subjob death report. This routine is
! always called at interrupt level in response to receipt of the IPCF
! message. Note that we can call the Q$xxxx routines with impunity
! because the fact that we're running as an interrupt routine guarantees
! no one else will simultaneously try to call them.
!
! FORMAL PARAMETERS:
!
! p_pdb: pointer to packet descriptor block for death message
!
!--
BEGIN
BIND pdb = .p_pdb : $$PDB_DECL, ! IPCF message data block pointer
msg = .pdb[PDB$$H_MESSAGE_ADDRESS] : VECTOR [9], ! The message itself
flags = msg[2],
connect_time = msg[3],
runtime = msg[4],
killer = msg[6],
last_error = msg[8];
LOCAL job,
job_handle,
oldest;
job = .(msg[1])<rh>;
! There may be more than one match. By the time we get this message,
! the old job is probably gone and the job number may have already been
! recycled. For this reason, we must assume duplicates possible, and
! choose the one with the lower serial number (created earlier).
job_handle = -1;
INCR index FROM 0 TO DIU$K_MAX_MJOB - 1
DO IF .jobstatus[.index, DIUJ$H_JOB_NUMBER] EQL .job
AND .jobstatus[.index, DIUJ$V_INUSE]
THEN IF .job_handle EQL -1 ! First candidate?
THEN BEGIN ! Yes, believe it
job_handle = .index;
oldest = .jobstatus[.index, DIUJ$G_SERIAL_NUMBER];
END
ELSE IF .jobstatus[.index, DIUJ$G_SERIAL_NUMBER] LSS .oldest
THEN BEGIN
job_handle = .index;
oldest = .jobstatus[.index, DIUJ$G_SERIAL_NUMBER];
END;
IF .job_handle EQL -1 ! If we didn't find ethe job
THEN RETURN (DIU$_NORMAL); ! then it could be a CRJOB failure
jobstatus[.job_handle, DIUJ$G_RUNTIME] = .runtime;
! Write a entry to the log file if it was a forced logout
IF (.flags AND SP_FLO) NEQ 0 ! Forced logout (because of error
THEN BEGIN ! in job)?
lj$event(DIU$_SLAVE_ABNORMAL, .last_error, 0, .job_handle); ! sys
lj$uevent(DIU$_SLAVE_ABNORMAL, .last_error, 0, .job_handle); ! usr
END;
! Write an event to the log file if it was a logout by another job.
IF (.flags AND SP_OLO) NEQ 0 ! Forced logout by another job
THEN BEGIN
IF .killer EQL s$jobno () ! Did I kill the job?
THEN BEGIN ! Yes, log the logout please
lj$event(DIU$_KILLED_BY_USER, 0,
jobstatus[.job_handle, DIUJ$T_EXTRA_TEXT],
.job_handle);
lj$uevent(DIU$_KILLED_BY_USER, 0,
jobstatus[.job_handle, DIUJ$T_EXTRA_TEXT],
.job_handle);
END
ELSE BEGIN
LOCAL user_descr : $STR_DESCRIPTOR (CLASS = DYNAMIC),
line_descr : $STR_DESCRIPTOR (CLASS = DYNAMIC);
$STR_DESC_INIT (DESCRIPTOR = user_descr, CLASS = DYNAMIC);
$STR_DESC_INIT (DESCRIPTOR = line_descr, CLASS = DYNAMIC);
IF .killer EQL -1 ! Job that killed us logged out?
THEN $STR_COPY (TARGET = line_descr,
STRING = 'Request killed by job that logged out immediately')
ELSE BEGIN
s$username (s$jobusr(.killer), user_descr);
$STR_COPY (TARGET = line_descr,
STRING = $STR_CONCAT ('Request killed by job ',
$STR_ASCII (.killer, BASE10),
' user ',
user_descr));
END;
lj$event(DIU$_KILLED_BY_USER, 0, line_descr, .job_handle); ! sys
lj$uevent(DIU$_KILLED_BY_USER, 0, line_descr, .job_handle); ! usr
$XPO_FREE_MEM (STRING = user_descr);
$XPO_FREE_MEM (STRING = line_descr);
END;
END;
! Dispose of the request
dispose (.job_handle);
! Release job-related storage, and call the scheduler to maybe start
! next job
reljsb(.job_handle);
SCHED();
END; ! End of j$death
ROUTINE dispose (job_handle) : NOVALUE =
!++
! FUNCTIONAL DESCRIPTION:
! Dispose of a job that has been logged out, either voluntarily or
! involuntarily.
!
! FORMAL PARAMETERS:
! job_handle - jobstatus index
!
! IMPLICIT INPUTS:
! NONE
!
! IMPLICIT OUTPUTS:
! NONE
!
! ROUTINE VALUE and
! COMPLETION CODES:
! NONE
!
! SIDE EFFECTS:
! NONE
!
!--
BEGIN
BIND
req_block = .jobstatus[.job_handle, DIUJ$A_REQ_BLOCK] : $DIU_BLOCK;
LOCAL
dependent;
!
! If the job completed normally, delete it from the queue.
!
IF .jobstatus[.job_handle, DIUJ$V_REQ_COMPLETED]
THEN
BEGIN
!
! Notify the user of job disposition and do resource accounting
!
notify (.jobstatus[.job_handle, DIUJ$G_LAST_ERROR],
.jobstatus[.job_handle, DIUJ$G_2ND_CODE],
jobstatus[.job_handle, DIUJ$T_EXTRA_TEXT],
req_block);
a$account (.job_handle, 'SUC');
!
! If dependent request exists, clear its prerequisite field
!
IF (dependent = .req_block[DIU$H_DEPENDENT_ID]) NEQ 0
THEN q$modify (.dependent, DIUQ$K_PREREQUISITE_ID, 0);
! Delete this completed request from the queue
q$delete (.req_block[DIU$H_REQUEST_ID]);
END
ELSE
BEGIN
IF .jobstatus[.job_handle, DIUJ$V_FLUSH_REQUEST]
THEN
BEGIN
!
! Notify the user of job disposition if hasn't already been done.
!
IF NOT .jobstatus[.job_handle, DIUJ$V_ALREADY_NOTIFIED]
THEN
BEGIN
!
! Notify the user of job disposition
!
notify (.jobstatus[.job_handle, DIUJ$G_LAST_ERROR],
.jobstatus[.job_handle, DIUJ$G_2ND_CODE],
jobstatus[.job_handle, DIUJ$T_EXTRA_TEXT],
req_block);
END;
!
! Do resource accounting
!
a$account (.job_handle, 'ERR');
!
! If dependent request(s) exist, dispose of them also
!
IF (dependent = .req_block[DIU$H_DEPENDENT_ID]) NEQ 0
THEN
abort (.dependent);
IF NOT .jobstatus[.job_handle, DIUJ$V_ALREADY_DELETED]
THEN
q$delete (.req_block[DIU$H_REQUEST_ID]);
END
ELSE
BEGIN
!
! Do resource accounting and requeue the request
!
a$account (.job_handle, 'REQ');
q$reque (.req_block[DIU$H_REQUEST_ID]);
lj$event(DIU$_REQUEUED, 0, 0, .job_handle); ! System log
lj$uevent(DIU$_REQUEUED, 0, 0, .job_handle); ! User log file
END
END;
END; ! End of dispose
GLOBAL ROUTINE abort (req_ID) : NOVALUE =
!++
! FUNCTIONAL DESCRIPTION:
! Abort a chain of dependent requests, unless continuation requested.
! We go down the chain deleting requests until the end of the chain
! is reached, or a continuable dependent is encountered.
!
! FORMAL PARAMETERS:
! req_ID - request-ID of the first dependent in the chain
!
! IMPLICIT INPUTS:
! NONE
!
! IMPLICIT OUTPUTS:
! NONE
!
! ROUTINE VALUE and
! COMPLETION CODES:
! NONE
!
! SIDE EFFECTS:
! NONE
!
!--
BEGIN
LOCAL
chain_head,
req_block_template : $DIU_BLOCK,
req_block : REF $DIU_BLOCK,
bits,
jobname_descr : $STR_DESCRIPTOR ();
chain_head = 0;
DO
BEGIN
IF .chain_head NEQ 0
THEN
q$release_chain (.chain_head);
q$req_block_init (req_block_template);
req_block_template[DIU$H_REQUEST_ID] = .req_ID;
IF NOT q$find (req_block_template, chain_head)
THEN
EXITLOOP;
IF .chain_head EQL 0
THEN
EXITLOOP;
req_block = .chain_head + 1;
$STR_DESC_INIT (DESCRIPTOR = jobname_descr,
STRING = (.req_block[DIU$H_JOBNAME],
CH$PTR (req_block[DIU$T_JOBNAME])));
IF .req_block[DIU$V_SEQ_CONTINUE]
THEN
BEGIN
!
! This request is continuable. Remove the dependency and quit:
! we stop aborting at the first sign of willingness to continue.
!
q$modify (.req_ID, DIUQ$K_PREREQUISITE_ID, 0);
EXITLOOP;
END;
!
! This request must be aborted. Get the next dependent's ID and
! delete this request, after notifying the user.
!
$DIU_LOG (($STR_CONCAT ('Req ',
$STR_ASCII (.req_block[DIU$H_REQUEST_ID]),
' (',
(.req_block[DIU$H_JOBNAME],
CH$PTR (req_block[DIU$T_JOBNAME])),
') killed, prerequisite request aborted')));
req_ID = .req_block[DIU$H_DEPENDENT_ID];
notify (DIU$_DEPENDENT_ABORTED,
0,
(UPLIT (0, 0)),
.req_block);
q$delete (.req_block[DIU$H_REQUEST_ID]);
END
UNTIL
.req_ID EQL 0; ! Means end of dependency chain
q$release_chain (.chain_head); ! In case anything still there
END; ! End of abort
END ! End of module
ELUDOM