/* BEGIN INCLUDE FILE ... queue_msg_hdr.incl.pl1 */

/* This is the message header used for standard system queue messages, namely:
   IO daemon requests, absentee requests, retrieval requests.
*/

/* Written by Jerry Whitmore, Spring 1978.
   Modified by T. Casey, November 1978, to add values for state.
   Modified by R. Kovalcik, June 1982, defer_until_process_terminataion
*/

dcl 1 queue_msg_hdr based aligned,			/* standard header for all system queue messages */
    2 msg_time fixed bin (71),			/* date and time of request */
    2 hdr_version fixed bin,				/* version of this declaration */
    2 dirname char (168),				/* directory name */
    2 ename char (32),				/* entry name of file requested */
    2 message_type fixed bin,				/* message format descriptor   */
						/* 0 = absentee request        */
						/* 1 = print request           */
						/* 2 = punch request           */
						/* 3 = tape request            */
						/* 4 = retrieval request       */
    2 bit_flags,
      3 delete_sw bit (1) unal,			/* delete file when done */
      3 notify bit (1) unal,				/* user wants to be notified */
      3 defer_until_process_termination bit (1) unal,	/* don't process request until process terminates */
      3 padding bit (33) unal,
    2 state fixed bin,				/* stage of processing after being queued:
						   0 = initial unprocessed state, 1 = deferred,
						   2 = in state transition, 3 = eligible, 4 = running,
                                                               5 = bumped, 6 = deferred_until_process_termination */
    2 orig_queue fixed bin,				/* queue the request was submitted to */
    2 std_length fixed bin,				/* length of std msg for this type */
    2 dupt_lock bit (36) aligned,			/* lock word for defer until process termination */
    2 hdr_pad (3) fixed bin;

dcl  queue_msg_hdr_version_1 fixed bin int static options (constant) init (1); /* current version of the header */

/* Values for queue_msg_hdr.state */

dcl  STATE_UNPROCESSED fixed bin int static options (constant) init (0);
dcl  STATE_DEFERRED fixed bin int static options (constant) init (1);
dcl  STATE_TRANSITION fixed bin int static options (constant) init (2);
dcl  STATE_ELIGIBLE fixed bin int static options (constant) init (3);
dcl  STATE_RUNNING fixed bin int static options (constant) init (4);
dcl  STATE_BUMPED fixed bin int static options (constant) init (5);
dcl  STATE_DUPT fixed bin int static options (constant) init (6);

/* END INCLUDE FILE ... queue_msg_hdr.incl.pl1 */


*/
                                          -----------------------------------------------------------


Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group Bull including Bull HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell Bull Inc., Groupe Bull
and Bull HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture for 
managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

                                          -----------------------------------------------------------

Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, Bull or Bull HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by Bull HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved

*/