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Updated: 11 December 1998

OpenVMS System Services Reference Manual


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$SIGNAL_ARRAY_64

Returns the address of a 64-bit signal array. A 32-bit signal array and a mechanism array are passed to a condition handler when it is called. $SIGNAL_ARRAY_64 provides the address of the 64-bit signal array, which might be required for programs that use 64-bit address space.

This service accepts 64-bit addresses.


Format

SYS$SIGNAL_ARRAY_64 mcharg, sigarg_64


C Prototype

int sys$signal_array_64 (unsigned __int64 mcharg, unsigned __int64 sigarg_64);


Arguments

mcharg


OpenVMS usage: mechanism array
type: vector quadword (unsigned)
access: read only
mechanism: by 32- or 64-bit reference, array reference

The mechanism array. The mcharg argument is the 32- or 64-bit address of this array, which was passed to the condition handler. $SIGNAL_ARRAY_64 uses this structure to determine the 64-bit signal array address.

sigarg_64


OpenVMS usage: 64-bit signal array
type: vector quadword (unsigned)
access: write only
mechanism: by 32- or 64-bit reference, array reference

The 32- or 64-bit address of the 64-bit signal array is returned in this argument.

Description

$SIGNAL_ARRAY_64 provides the address of the 64-bit version of the signal array for condition handlers that need it. It is normally needed only by applications that use 64-bit address space and want to handle errors involving addresses in that region.

For example, if an access violation occurs on a 64-bit address, the 32-bit signal array passed to the handler will contain only the low 32 bits of the effective address, since each entry is a longword. The 64-bit signal array, which can be obtained using this service, contains quadword entries, so the 64-bit address can be fully expressed.

Required Access or Privileges

None

Required Quota

None

Related Services

$PUTMSG, which accepts either a 32-bit or 64-bit signal array as an argument.


Condition Values Returned

SS$_NORMAL The service completed succesfully.
SS$_ACCVIO The sigarg_64 argument cannot be written.
SS$_BADPARAM The mcharg argument is not a mechanism array in the expected format.

$SNDERR

Writes a user-specified message to the system error log file, preceding it with the date and time.

Format

SYS$SNDERR msgbuf


C Prototype

int sys$snderr (void *msgbuf);


Argument

msgbuf


OpenVMS usage: char_string
type: character-coded text string
access: read only
mechanism: by descriptor--fixed-length string descriptor

Message to be written to the error log file. The msgbuf argument is the address of a character string descriptor pointing to the message text.

Description

The Send Message to Error Logger service writes a user-specified message to the system error log file, preceding it with the date and time. The $SNDERR service requires system dynamic memory.

Required Access or Privileges

To send a message to the error log file, the calling process must have BUGCHK privilege.

Required Quota

None

Related Services

$ALLOC, $ASSIGN, $BRKTHRU, $BRKTHRUW, $CANCEL, $CREMBX, $DALLOC, $DASSGN, $DELMBX, $DEVICE_SCAN, $DISMOU, $GETDVI, $GETDVIW, $GETMSG, $GETQUI, $GETQUIW, $INIT_VOL, $MOUNT, $PUTMSG, $QIO, $QIOW, $SNDJBC, $SNDJBCW, $SNDOPR


Condition Values Returned

SS$_NORMAL The service completed successfully.
SS$_ACCVIO The message buffer or buffer descriptor cannot be read by the caller.
SS$_INSFMEM The system dynamic memory is insufficient for completing the service.
SS$_NOPRIV The process does not have the required BUGCHK privilege.

$SNDJBC

Creates, stops, and manages queues and the batch and print jobs in those queues. The $SNDJBC service completes asynchronously; to synchronize the completion of most operations, use the Send to Job Controller and Wait ($SNDJBCW) service.

Format

SYS$SNDJBC [efn] ,func [,nullarg] [,itmlst] [,iosb] [,astadr] [,astprm]


C Prototype

int sys$sndjbc (unsigned int efn, unsigned short int func, unsigned int nullarg, void *itmlst, struct _iosb *iosb, void (*astadr)(__unknown_params), int astprm);


Arguments

efn


OpenVMS usage: ef_number
type: longword (unsigned)
access: read only
mechanism: by value

Number of the event flag to be set when $SNDJBC completes. The efn argument is a longword containing this number; however, $SNDJBC uses only the low-order byte.

When you queue the request, $SNDJBC clears the specified event flag (or event flag 0 if efn was not specified). Then, when the operation completes, $SNDJBC sets the specified event flag (or event flag 0).

func


OpenVMS usage: function_code
type: word (unsigned)
access: read only
mechanism: by value

Function code specifying the function that $SNDJBC is to perform. The func argument is a word containing this function code. The $SJCDEF macro defines the names of each function code.

You can specify only one function code in a single call to $SNDJBC. Most function codes require or allow for additional information to be passed in the call. You pass this information by using the itmlst argument, which specifies a list of one or more item descriptors. Each item descriptor in turn specifies an item code, which modifies, restricts, or otherwise affects the action designated by the function code.

nullarg


OpenVMS usage: null_arg
type: longword (unsigned)
access: read only
mechanism: by value

Placeholding argument reserved to Compaq.

itmlst


OpenVMS usage: item_list_3
type: longword (unsigned)
access: read only
mechanism: by reference

Item list supplying information to be used in performing the function specified by the func argument. The itmlst argument is the address of the item list. The item list consists of one or more item descriptors, each of which specifies an item code. The item list is terminated by an item code of 0 or by a longword of 0. The following diagram depicts the structure of a single item descriptor.

The following table defines the item descriptor fields.
Descriptor Field Definition
Buffer length A word specifying the length of the buffer; the buffer either supplies information to be used by $SNDJBC or receives information from $SNDJBC. The required length of the buffer varies, depending on the item code specified, and is given in the description of each item code.
Item code A word containing an item code, which identifies the nature of the information supplied for use by $SNDJBC or received from $SNDJBC. Each item code has a symbolic name. The $SJCDEF macro defines these symbol names.
Buffer address A longword containing the address of the buffer that specifies or receives the information.
Return length address A longword containing the address of a word to receive the length (in bytes) of information returned by $SNDJBC. If you specify this address as 0, no length is returned.

The item codes' symbolic names have the following format:

SJC$_code 

There are three types of item code:

Several item codes specify a queue name, form name, or characteristic name. For these item codes, the buffer must specify a string containing from 1 to 31 characters, exclusive of spaces, tabs, and null characters, which are ignored. Allowable characters in the string are uppercase alphabetic characters, lowercase alphabetic characters (which are converted to uppercase), numeric characters, the dollar sign ($), and the underscore (_).

iosb


OpenVMS usage: io_status_block
type: quadword (unsigned)
access: write only
mechanism: by reference

I/O status block into which $SNDJBC writes the completion status after the requested operation has completed. The iosb argument is the address of the I/O status block.

At request initiation, $SNDJBC sets the value of the quadword I/O status block to 0. When the requested operation completes, $SNDJBC writes a condition value in the first longword of the I/O status block. It writes the value 0 into the second longword; this longword is unused and reserved for future use.

The condition values returned by $SNDJBC in the I/O status block are usually condition values from the JBC facility. These condition values are defined by the $JBCMSGDEF macro. In some cases, the condition value returned by $SNDJBC can be an error return from a system service or an OpenVMS RMS service that is used in executing the request. For the SJC$_SYNCHRONIZE_JOB request, the condition value returned is the completion status of the requested job.

The condition values returned from the JBC facility are listed in the Condition Values Returned in the I/O Status Block section.

Though this argument is optional, Compaq strongly recommends that you specify it, for the following reasons:

astadr


OpenVMS usage: ast_procedure
type: procedure value
access: call without stack unwinding
mechanism: by reference

AST service routine to be executed when $SNDJBC completes. The astadr argument is the address of this routine.

If specified, the AST routine executes at the same access mode as the caller of $SNDJBC.

astprm


OpenVMS usage: user_arg
type: longword (unsigned)
access: read only
mechanism: by value

AST parameter to be passed to the AST service routine specified by the astadr argument. The astprm argument is this longword parameter. Function Codes This section describes the various function codes that are applicable to the $SNDJBC system service.

SJC$_ABORT_JOB

This request aborts the execution of the current job from an output execution queue or the job you specified from a batch queue. By default, the job is deleted. However, for a restartable job, you can requeue it to the same queue or to another queue.

You must specify one of the following input value item codes:

You must specify the following input value item code for batch jobs:

You can specify the following optional input value or Boolean item codes:
SJC$_DESTINATION_QUEUE ---
SJC$_HOLD SJC$_NO_HOLD
SJC$_PRIORITY ---
SJC$_REQUEUE ---

SJC$_ADD_FILE

This request adds a file to the open job owned by the requesting process. You use this operation as part of a sequence of calls to the $SNDJBC service to create a job with one or more files. The first call in the sequence specifies the SJC$_CREATE_JOB operation to create an open job. Each subsequent SJC$_ADD_FILE request associates an additional file with the job. Finally, you make an SJC$_CLOSE_JOB request to complete the batch or print job specification.

To create a job that contains only one file, you can make a single call to $SNDJBC that specifies the SJC$_ENTER_FILE function code.

You must specify one of the following input value item codes:

You can specify the following input value or Boolean item codes:
SJC$_DELETE_FILE SJC$_NO_DELETE_FILE
SJC$_DOUBLE_SPACE SJC$_NO_DOUBLE_SPACE
SJC$_FILE_BURST SJC$_NO_FILE_BURST
SJC$_FILE_COPIES ---
SJC$_FILE_FLAG SJC$_NO_FILE_FLAG
SJC$_FILE_SETUP_MODULES SJC$_NO_FILE_SETUP_MODULES
SJC$_FILE_TRAILER SJC$_NO_FILE_TRAILER
SJC$_FIRST_PAGE SJC$_NO_FIRST_PAGE
SJC$_LAST_PAGE SJC$_NO_LAST_PAGE
SJC$_PAGE_HEADER SJC$_NO_PAGE_HEADER
SJC$_PAGINATE SJC$_NO_PAGINATE
SJC$_PASSALL SJC$_NO_PASSALL

SJC$_ALTER_JOB

This request alters the parameters of an existing job that is not currently executing.

You must specify the following input value item code:

You can specify the following input value or Boolean item codes:
SJC$_AFTER_TIME SJC$_NO_AFTER_TIME
SJC$_CHARACTERISTIC_NAME SJC$_NO_CHARACTERISTICS
SJC$_CHARACTERISTIC_NUMBER ---
--- SJC$_NO_CHECKPOINT_DATA
SJC$_CLI SJC$_NO_CLI
SJC$_CPU_LIMIT SJC$_NO_CPU_LIMIT
--- SJC$_NO_DELETE_FILE
SJC$_DESTINATION_QUEUE ---
SJC$_DOUBLE_SPACE SJC$_NO_DOUBLE_SPACE
SJC$_FILE_BURST SJC$_NO_FILE_BURST
SJC$_FILE_COPIES ---
SJC$_FILE_FLAG SJC$_NO_FILE_FLAG
SJC$_FILE_SETUP_MODULES SJC$_NO_FILE_SETUP_MODULES
SJC$_FILE_TRAILER SJC$_NO_FILE_TRAILER
SJC$_FIRST_PAGE SJC$_NO_FIRST_PAGE
SJC$_FORM_NAME ---
SJC$_FORM_NUMBER ---
SJC$_HOLD SJC$_NO_HOLD
SJC$_JOB_COPIES ---
SJC$_JOB_DEFAULT_RETAIN ---
SJC$_JOB_ERROR_RETAIN ---
SJC$_JOB_NAME ---
SJC$_JOB_RETAIN ---
SJC$_JOB_RETAIN_TIME ---
SJC$_LAST_PAGE SJC$_NO_LAST_PAGE
SJC$_LOG_DELETE SJC$_NO_LOG_DELETE
SJC$_LOG_QUEUE ---
SJC$_LOG_SPECIFICATION SJC$_NO_LOG_SPECIFICATION
SJC$_LOG_SPOOL SJC$_NO_LOG_SPOOL
SJC$_LOWERCASE SJC$_NO_LOWERCASE
SJC$_NOTE SJC$_NO_NOTE
SJC$_NOTIFY SJC$_NO_NOTIFY
SJC$_OPERATOR_REQUEST SJC$_NO_OPERATOR_REQUEST
SJC$_PAGE_HEADER SJC$_NO_PAGE_HEADER
SJC$_PAGINATE SJC$_NO_PAGINATE
SJC$_PARAMETER_1 through 8 SJC$_NO_PARAMETERS
SJC$_PASSALL SJC$_NO_PASSALL
SJC$_PRIORITY ---
SJC$_QUEUE ---
SJC$_RESTART SJC$_NO_RESTART
SJC$_WSDEFAULT SJC$_NO_WSDEFAULT
SJC$_WSEXTENT SJC$_NO_WSEXTENT
SJC$_WSQUOTA SJC$_NO_WSQUOTA

If you specify the SJC$_QUEUE item code, the $SNDJBC service verifies that the selected job entry exists on the specified queue before modifying the job.

SJC$_ALTER_QUEUE

This request alters the parameters of a queue. The execution of current jobs is unaffected.

You must specify the following input value item code:

You can specify the following input value or Boolean item codes:
SJC$_BASE_PRIORITY ---
SJC$_CHARACTERISTIC_NAME SJC$_NO_CHARACTERISTICS
SJC$_CHARACTERISTIC_NUMBER ---
SJC$_CLOSE_QUEUE ---
SJC$_CPU_DEFAULT SJC$_NO_CPU_DEFAULT
SJC$_CPU_LIMIT SJC$_NO_CPU_LIMIT
SJC$_DEFAULT_FORM_NAME ---
SJC$_DEFAULT_FORM_NUMBER ---
SJC$_FILE_BURST SJC$_NO_FILE_BURST
SJC$_FILE_BURST_ONE ---
SJC$_FILE_FLAG SJC$_NO_FILE_FLAG
SJC$_FILE_FLAG_ONE ---
SJC$_FILE_TRAILER SJC$_NO_FILE_TRAILER
SJC$_FILE_TRAILER_ONE ---
SJC$_FORM_NAME ---
SJC$_FORM_NUMBER ---
SJC$_GENERIC_SELECTION SJC$_NO_GENERIC_SELECTION
SJC$_JOB_BURST SJC$_NO_JOB_BURST
SJC$_JOB_FLAG SJC$_NO_JOB_FLAG
SJC$_JOB_LIMIT ---
SJC$_JOB_RESET_MODULES SJC$_NO_JOB_RESET_MODULES
SJC$_JOB_SIZE_MAXIMUM SJC$_NO_JOB_SIZE_MAXIMUM
SJC$_JOB_SIZE_MINIMUM SJC$_NO_JOB_SIZE_MINIMUM
SJC$_JOB_SIZE_SCHEDULING SJC$_NO_JOB_SIZE_SCHEDULING
SJC$_JOB_TRAILER SJC$_NO_JOB_TRAILER
SJC$_OPEN_QUEUE ---
SJC$_OWNER_UIC ---
SJC$_PAGINATE SJC$_NO_PAGINATE
SJC$_PROTECTION ---
SJC$_QUEUE_DESCRIPTION SJC$_NO_QUEUE_DESCRIPTION
SJC$_RECORD_BLOCKING SJC$_NO_RECORD_BLOCKING
SJC$_RETAIN_ALL_JOBS SJC$_NO_RETAIN_JOBS
SJC$_RETAIN_ERROR_JOBS ---
SJC$_SWAP SJC$_NO_SWAP
SJC$_WSDEFAULT SJC$_NO_WSDEFAULT
SJC$_WSEXTENT SJC$_NO_WSEXTENT
SJC$_WSQUOTA SJC$_NO_WSQUOTA

SJC$_ASSIGN_QUEUE

This request assigns a logical queue to an execution queue. The SJC$_QUEUE item code specifies the logical queue; the SJC$_DESTINATION_QUEUE item code specifies the execution queue.


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