COMPILATION LISTING OF SEGMENT tm_get_txn_index Compiled by: Multics PL/I Compiler, Release 28e, of February 14, 1985 Compiled at: Honeywell Multics Op. - System M Compiled on: 03/05/85 0913.4 mst Tue Options: optimize map 1 /* *********************************************************** 2* * * 3* * Copyright, (C) Honeywell Information Systems Inc., 1983 * 4* * * 5* *********************************************************** */ 6 /* format: style4,ifthenstmt,^indproc,^indcomtxt */ 7 /*---------------*/ 8 9 tm_get_txn_index: proc (A_txn_id, A_code) returns (fixed bin); 10 11 /* DESCRIPTION: 12* 13* This procedure looks for A_txn_id in the TDT and returns the index 14* of the corresponding TDT entry. If there is none, it returns an error code. 15**/ 16 17 /* HISTORY: 18* 19*Written by Steve Herbst, 08/06/82. 20*Modified: 21*08/16/82 by Steve Herbst: Changed to use consolidated dm_tm_tdt.incl.pl1 with 22* entry declarations. 23*09/10/82 by Steve Herbst: Changed for Version 2 TDT structure. 24*03/14/83 by Steve Herbst: Fixed to reject A_txn_id = "0"b. 25*04/26/84 by Steve Herbst: Changed to accept "0"b to refer to current txn. 26* 27* 28*/* DECLARATIONS */ 29 30 /* Parameters */ 31 32 dcl A_txn_id bit (36) aligned; 33 dcl A_code fixed bin (35); 34 35 36 37 /* Constants */ 38 39 /* Based */ 40 41 /* Static */ 42 43 /* Automatic */ 44 45 dcl txn_id bit (36) aligned; 46 dcl txn_index fixed bin; 47 48 /* External */ 49 50 dcl dm_data_$current_txn_index fixed bin ext; 51 dcl dm_data_$tm_tdt_ptr ptr ext; 52 dcl dm_error_$no_current_transaction fixed bin (35) ext; 53 dcl dm_error_$transaction_not_found fixed bin (35) ext; 54 dcl error_table_$unimplemented_version fixed bin (35) ext; 55 56 /* Entries */ 57 58 /* Builtins */ 59 60 /* Conditions */ 61 62 /* END OF DECLARATIONS */ 63 64 txn_id = A_txn_id; 65 if txn_id = "0"b then 66 if dm_data_$current_txn_index = 0 then do; 67 A_code = dm_error_$no_current_transaction; 68 return (0); 69 end; 70 else return (dm_data_$current_txn_index); 71 72 tm_tdt_ptr = dm_data_$tm_tdt_ptr; 73 74 if tm_tdt.version ^= TM_TDT_VERSION_3 then do; 75 A_code = error_table_$unimplemented_version; 76 return (0); 77 end; 78 79 do txn_index = 1 to tm_tdt.entry_count; 80 81 if tm_tdt.process_id (txn_index) ^= "0"b then 82 if tm_tdt.txn_id (txn_index) = txn_id then do; 83 A_code = 0; 84 return (txn_index); 85 end; 86 end; 87 88 A_code = dm_error_$transaction_not_found; 89 90 return (0); 91 1 1 /* START OF: dm_tm_tdt.incl.pl1 */ 1 2 1 3 /* Transaction Definition Table for transaction_manager_ */ 1 4 /* This structure is used to reference the TDT. The process_id field for the 1 5* i'th TDT entry, for example, is usually referenced as tm_tdt.process_id (i). 1 6* A TDT entry is in use by a process when its process_id field is nonzero. 1 7* An entry is reserved by using the stacq builtin to set process_id, if and 1 8* only if it is already zero. The entry is being used for a transaction when 1 9* tm_tdt.txn_id (i) is nonzero. The possible values of tm_tdt.state (i) are 1 10* listed in dm_tm_states.incl.pl1. If state = 0, no operation has been 1 11* performed yet on the transaction. */ 1 12 1 13 1 14 /* HISTORY: 1 15*Designed by Matt Pierret, 01/26/82. 1 16*Coded by Steve Herbst, 07/27/82. 1 17*Modified: 1 18*08/05/82 by Steve Herbst: Added tm_tdt.operation and padded last_uid to full word. 1 19*08/05/82 by Steve Herbst: Changed creator_process_id to bit (36). 1 20*08/16/82 by Steve Herbst: Added contents of dm_tm_tdt_entry.incl.pl1. 1 21*09/09/82 by Steve Herbst: Removed in_use flag from TDT entry and rearranged fields. 1 22*09/20/82 by Steve Herbst: Removed tm_tdt.operation. 1 23*11/01/82 by Steve Herbst: Added event_channel and error_sw to tm_tdt_entry. 1 24*11/05/82 by Steve Herbst: Added suspended_sw and error_code to tm_tdt_entry. 1 25*11/11/82 by Steve Herbst: Deleted tm_tdt_entry.alloc_complete. 1 26*11/23/82 by Steve Herbst: Compacted, changed some numbers to unsigned. 1 27*12/14/82 by Steve Herbst: Added tm_tdt_entry.daemon_error_sw. 1 28*01/11/83 by Steve Herbst: Added owner_name, abandoned_sw & kill_sw to tm_tdt_entry. 1 29*01/24/83 by Steve Herbst: Replaced daemon_error_sw with daemon_adjust_count. 1 30*01/25/83 by Steve Herbst: Moved abandoned_sw from transaction portion to entry header portion. 1 31*05/13/83 by Steve Herbst: Version 3, changed all fixed bin (18) unal uns numbers to fixed bin (17) unaligned. 1 32*05/26/83 by Steve Herbst: Added rollback_count and checkpoint_id. 1 33**/ 1 34 1 35 dcl tm_tdt_ptr ptr; 1 36 dcl tdt_max_count fixed bin; 1 37 1 38 dcl TM_TDT_VERSION_3 char (8) int static options (constant) init ("TM-TDT 3"); 1 39 1 40 1 41 dcl 1 tm_tdt aligned based (tm_tdt_ptr), 1 42 2 version char (8), /* = "TM-TDT 3" */ 1 43 2 lock fixed bin (71), /* (currently not used) */ 1 44 2 last_uid bit (27) aligned, /* last transaction uid assigned */ 1 45 2 flags, 1 46 3 no_begins bit (1) unaligned, /* ON => only priv process can begin transaction */ 1 47 3 mbz1 bit (35) unaligned, 1 48 2 entry_count fixed bin, /* number of slots allocated */ 1 49 2 mbz2 fixed bin, /* for even word boundary */ 1 50 2 entry (tdt_max_count refer (tm_tdt.entry_count)) 1 51 like tm_tdt_entry; 1 52 1 53 1 54 1 55 /* TDT entries: */ 1 56 1 57 dcl tm_tdt_entry_ptr ptr; 1 58 1 59 dcl 1 tm_tdt_entry aligned based (tm_tdt_entry_ptr), 1 60 2 event_channel fixed bin (71), /* for communication with the process */ 1 61 2 process_id bit (36) aligned, /* process for which this entry is reserved */ 1 62 2 owner_name char (32), /* person.project of owner process */ 1 63 2 entry_flags, 1 64 3 abandoned_sw bit (1) unaligned, /* ON => owner has called tm_$abandon on this entry */ 1 65 3 mbz3 bit (35) unaligned, 1 66 2 transaction unaligned, 1 67 3 txn_id bit (36) aligned, /* unique identifier assigned at begin time */ 1 68 3 date_time_created fixed bin (71) aligned, 1 69 3 mode fixed bin (17) unaligned, /* mode specified with transaction begin */ 1 70 3 state fixed bin (17) unaligned, /* state transaction is currently in */ 1 71 3 error_code fixed bin (35) aligned, /* goes along with error_sw and error state */ 1 72 3 checkpoint_id fixed bin (17) unaligned, /* identifier of the current rollback checkpoint */ 1 73 3 rollback_count fixed bin (17) unaligned, /* number of times bjm_$rollback has been called */ 1 74 3 daemon_adjust_count fixed bin (17) unaligned, /* number of times daemon has tried to adjust since user */ 1 75 3 return_idx fixed bin (17) unaligned, /* parent transaction, or zero */ 1 76 3 flags, 1 77 4 dead_process_sw bit (1) unaligned, /* ON => treat process as dead even if it isn't yet */ 1 78 4 suspended_sw bit (1) unaligned, /* ON => suspended by tm_$suspend_txn */ 1 79 4 error_sw bit (1) unaligned, /* ON => state is one of the error states */ 1 80 4 kill_sw bit (1) unaligned, /* ON => being processed by tm_$kill */ 1 81 4 mbz4 bit (29) unaligned, 1 82 3 post_commit_flags, 1 83 4 (fmgr, 1 84 bjmgr, 1 85 ajmgr) bit (1) unaligned, 1 86 3 mbz4 fixed bin; 1 87 1 88 1 89 /* END OF: dm_tm_tdt.incl.pl1 */ 92 93 94 95 end tm_get_txn_index; SOURCE FILES USED IN THIS COMPILATION. LINE NUMBER DATE MODIFIED NAME PATHNAME 0 03/05/85 0759.9 tm_get_txn_index.pl1 >spec>on>7138.pbf>tm_get_txn_index.pl1 92 1 01/07/85 0900.1 dm_tm_tdt.incl.pl1 >ldd>include>dm_tm_tdt.incl.pl1 NAMES DECLARED IN THIS COMPILATION. IDENTIFIER OFFSET LOC STORAGE CLASS DATA TYPE ATTRIBUTES AND REFERENCES (* indicates a set context) NAMES DECLARED BY DECLARE STATEMENT. A_code parameter fixed bin(35,0) dcl 33 set ref 9 67* 75* 83* 88* A_txn_id parameter bit(36) dcl 32 ref 9 64 TM_TDT_VERSION_3 000000 constant char(8) initial unaligned dcl 1-38 ref 74 dm_data_$current_txn_index 000010 external static fixed bin(17,0) dcl 50 ref 65 70 dm_data_$tm_tdt_ptr 000012 external static pointer dcl 51 ref 72 dm_error_$no_current_transaction 000014 external static fixed bin(35,0) dcl 52 ref 67 dm_error_$transaction_not_found 000016 external static fixed bin(35,0) dcl 53 ref 88 entry 10 based structure array level 2 dcl 1-41 entry_count 6 based fixed bin(17,0) level 2 dcl 1-41 ref 79 error_table_$unimplemented_version 000020 external static fixed bin(35,0) dcl 54 ref 75 process_id 12 based bit(36) array level 3 dcl 1-41 ref 81 tm_tdt based structure level 1 dcl 1-41 tm_tdt_entry based structure level 1 dcl 1-59 tm_tdt_ptr 000102 automatic pointer dcl 1-35 set ref 72* 74 79 81 81 transaction 24 based structure array level 3 unaligned dcl 1-41 txn_id 24 based bit(36) array level 4 in structure "tm_tdt" dcl 1-41 in procedure "tm_get_txn_index" ref 81 txn_id 000100 automatic bit(36) dcl 45 in procedure "tm_get_txn_index" set ref 64* 65 81 txn_index 000101 automatic fixed bin(17,0) dcl 46 set ref 79* 81 81 84* version based char(8) level 2 dcl 1-41 ref 74 NAMES DECLARED BY DECLARE STATEMENT AND NEVER REFERENCED. tdt_max_count automatic fixed bin(17,0) dcl 1-36 tm_tdt_entry_ptr automatic pointer dcl 1-57 NAME DECLARED BY EXPLICIT CONTEXT. tm_get_txn_index 000011 constant entry external dcl 9 THERE WERE NO NAMES DECLARED BY CONTEXT OR IMPLICATION. STORAGE REQUIREMENTS FOR THIS PROGRAM. Object Text Link Symbol Defs Static Start 0 0 214 236 102 224 Length 424 102 22 152 111 0 BLOCK NAME STACK SIZE TYPE WHY NONQUICK/WHO SHARES STACK FRAME tm_get_txn_index 70 external procedure is an external procedure. STORAGE FOR AUTOMATIC VARIABLES. STACK FRAME LOC IDENTIFIER BLOCK NAME tm_get_txn_index 000100 txn_id tm_get_txn_index 000101 txn_index tm_get_txn_index 000102 tm_tdt_ptr tm_get_txn_index THE FOLLOWING EXTERNAL OPERATORS ARE USED BY THIS PROGRAM. return ext_entry NO EXTERNAL ENTRIES ARE CALLED BY THIS PROGRAM. THE FOLLOWING EXTERNAL VARIABLES ARE USED BY THIS PROGRAM. dm_data_$current_txn_index dm_data_$tm_tdt_ptr dm_error_$no_current_transaction dm_error_$transaction_not_found error_table_$unimplemented_version LINE LOC LINE LOC LINE LOC LINE LOC LINE LOC LINE LOC LINE LOC 9 000005 64 000016 65 000021 67 000024 68 000026 70 000030 72 000032 74 000035 75 000042 76 000044 79 000046 81 000055 83 000065 84 000067 86 000072 88 000074 90 000100 ----------------------------------------------------------- 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