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Allows a process to specify a set of event flags for which it wants to wait.
SYS$WFLAND efn ,mask
int sys$wfland (unsigned int efn, unsigned int mask);
efn
OpenVMS usage: ef_number type: longword (unsigned) access: read only mechanism: by value
Number of any event flag within the event flag cluster to be used. The efn argument is a longword containing this number; however, $WFLAND uses only the low-order byte. Specifying the number of an event flag within the cluster serves to identify the event flag cluster.There are two local event flag clusters: cluster 0 and cluster 1. Cluster 0 contains event flag numbers 0 to 31, and cluster 1 contains event flag numbers 32 to 63.
There are two common event flag clusters: cluster 2 and cluster 3. Cluster 2 contains event flag numbers 64 to 95, and cluster 3 contains event flag numbers 96 to 127.
mask
OpenVMS usage: mask_longword type: longword (unsigned) access: read only mechanism: by value
Event flags for which the process is to wait. The mask argument is a longword bit vector wherein a bit, when set, selects the corresponding event flag for which to wait.
The Wait for Logical AND of Event Flags service allows a process to specify a set of event flags for which it wants to wait. The process is put in a wait state until all specified event flags are set, at which time $WFLAND returns to the caller and execution resumes.The wait state caused by this service can be interrupted by an asynchronous system trap (AST) if (1) the access mode at which the AST executes is equal to or more privileged than the access mode from which the $WAITFR service was issued and (2) the process is enabled for ASTs at that access mode.
When a wait state is interrupted by an AST and after the AST service routine completes execution, the operating system repeats the $WFLAND request on behalf of the process. At this point, if all the specified event flags have been set, the process resumes execution.
None
None
$ASCEFC, $CLREF, $DACEFC, $DLCEFC, $READEF, $SETEF, $WAITFR, $WFLOR
SS$_NORMAL The service completed successfully. SS$_ILLEFC You specified an illegal event flag number. SS$_UNASEFC The process is not associated with the cluster containing the specified event flag.
Allows a process to specify a set of event flags for which it wants to wait.
SYS$WFLOR efn ,mask
int sys$wflor (unsigned int efn, unsigned int mask);
efn
OpenVMS usage: ef_number type: longword (unsigned) access: read only mechanism: by value
Number of any event flag within the event flag cluster to be used. The efn argument is a longword containing this number; however, $WFLOR uses only the low-order byte. Specifying the number of an event flag within the cluster serves to identify the event flag cluster.There are two local event flag clusters: cluster 0 and cluster 1. Cluster 0 contains event flag numbers 0 to 31, and cluster 1 contains event flag numbers 32 to 63.
There are two common event flag clusters: cluster 2 and cluster 3. Cluster 2 contains event flag numbers 64 to 95, and cluster 3 contains event flag numbers 96 to 127.
mask
OpenVMS usage: mask_longword type: longword (unsigned) access: read only mechanism: by value
Event flags for which the process is to wait. The mask argument is a longword bit vector wherein a bit, when set, selects the corresponding event flag for which to wait.
The Wait for Logical OR of Event Flags service allows a process to specify a set of event flags for which it wants to wait. The process is put in a wait state until any one of the specified event flags is set, at which time $WFLOR returns to the caller and execution resumes.The wait state caused by this service can be interrupted by an asynchronous system trap (AST) if (1) the access mode at which the AST executes is equal to or more privileged than the access mode from which the $WFLOR service was issued and (2) the process is enabled for ASTs at that access mode.
When a wait state is interrupted by an AST and after the AST service routine completes execution, the operating system repeats the $WFLOR request on behalf of the process. At this point, if any of the specified event flags has been set, the process resumes execution.
None
None
$ASCEFC, $CLREF, $DACEFC, $DLCEFC, $READEF, $SETEF, $WAITFR, $WFLAND
SS$_NORMAL The service completed successfully. SS$_ILLEFC You specified an illegal event flag number. SS$_UNASEFC The process is not associated with the cluster containing the specified event flag.
The Write service transfers a user-specified number of bytes (beginning on a block boundary) to an RMS file of any file organization.For additional information about this service, see the OpenVMS Record Management Services Reference Manual.
The following table lists the obsolete system services and the current services that have replaced them.
| Obsolete Service | Current Service |
|---|---|
| $BRDCST | $BRKTHRU, $BRKTHRUW |
| $CHANGE_ACL | $GET_SECURITY, $SET_SECURITY |
| $CNTREG | $DELTVA |
| $CRELOG | $CRELNM |
| $DELLOG | $DELLNM |
| $GETCHN | $GETDVI, $GETDVIW |
| $GETDEV | $GETDVI, $GETDVIW |
| $INPUT | $QIO, $QIOW |
| $OUTPUT | $QIO, $QIOW |
| $SETSFM | This service is still supported but its use is strongly discouraged. |
| $SETSSF | This service is still supported but its use is strongly discouraged. |
| $SNDACC | $SNDJBC, $SNDJBCW |
| $SNDSMB | $SNDJBC, $SNDJBCW |
| $TRNLOG | $TRNLNM |
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