AMTW

Prolog  

Control Block Contents  
   AMTW DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

AMTW Prolog

 NAME       : HCPAMTW
 DESCRIPTION: Asynchronous Message Task Work Request
 DSECT      : AMTW
 FUNCTION   : Work element request for asynchronous message read task.
 LOCATED BY : Pointer (RDEVAMTQ) in the Real Device Block
 CREATED BY : Any asynchronous message requester
              HCPAMTRQ - Asynchronous Message Task Interface
 DELETED BY : HCPAMR - Message Read Task
 RELOCATION CONSIDERATIONS : None

AMTW Control Block Content

AMTW DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      AMTW           Asynchronous Message Task Work Request
0000    0 Address      4 *              Reserved for Gated Queue Manager
                                        for use as a queue chain pointer
0004    4 Bitstring    1 AMTWREQ        Defines the work to be performed
          00000080       AMTWREAD       X'80' AMTWREAD Read request
          00000040       AMTWNTFY       X'40' AMTWNTFY Notify request
          00000020       AMTWRQSC       X'20' AMTWRQSC Requeue request if
                                        a state change pending condition
                                        occurs
          00000010       AMTWCANC       X'10' AMTWCANC Cancel request
0005    5 Bitstring    1 AMTWDRMD       Defines the disposition of
                                        message
          00000080       AMTWPEND       X'80' AMTWPEND Call reflection if
                                        pending response
          00000040       AMTWRNOM       X'40' AMTWRNOM Call reflection if
                                        no-message message
          00000020       AMTWRTNM       X'20' AMTWRTNM Return a no-msg
                                        msg with the furnished ms
          00000010       AMTWIGNE       X'10' AMTWIGNE Ignore error -
                                        will discard IOCM
0006    6 Bitstring    1 AMTWAMSK       Attention presented path mask
0007    7 Bitstring    1 *              Reserved
0008    8 Signed       4 AMTWMGID       Message ID for a Read-specific
                                        request
000C   12 Address      4 AMTWRDEV       RDEV Address
0010   16 Address      4 AMTWVDEV       VDEV Address
0014   20 Address      4 AMTWPOST       Pointer to CPEBK which represents
                                        a task waiting to be notified
                                        that the processing for this work
                                        request has been completed
          00000003       AMTWSIZE       ((*-AMTW)+7)/8 AMTW size in
                                        double-words

AMTW Storage Layout

          
*** AMTW - Asynchronous Message Task Work Request
*
*     +---------------------------+------+------+------+------+
*   0 |///////////////////////////|:WREQ |:WDRMD|:WAMSK|//////|
*     +---------------------------+------+------+------+------+
*   8 |         AMTWMGID          |         AMTWRDEV          |
*     +---------------------------+---------------------------+
*  10 |         AMTWVDEV          |         AMTWPOST          |
*     +---------------------------+---------------------------+
*  18
*
*** AMTW - Asynchronous Message Task Work Request

AMTW Cross Reference

Symbol         Dspl Value
-------------- ---- -----
AMTWAMSK       0006
AMTWCANC       0004 00000010
AMTWDRMD       0005
AMTWIGNE       0005 00000010
AMTWMGID       0008
AMTWNTFY       0004 00000040
AMTWPEND       0005 00000080
AMTWPOST       0014
AMTWRDEV       000C
AMTWREAD       0004 00000080
AMTWREQ        0004
AMTWRNOM       0005 00000040
AMTWRQSC       0004 00000020
AMTWRTNM       0005 00000020
AMTWSIZE       0014 00000003
AMTWVDEV       0010