home *** CD-ROM | disk | FTP | other *** search
/ Linux Cubed Series 3: Developer Tools / Linux Cubed Series 3 - Developer Tools.iso / devel / db / esm-3.1 / esm-3 / usr / local / sm / src / serverlib / recover / analyzeServerPrepare.c < prev    next >
Encoding:
C/C++ Source or Header  |  1996-05-05  |  3.5 KB  |  143 lines
  1. /*
  2.  *   $RCSfile: analyzeServerPrepare.c,v $  
  3.  *   $Revision: 1.1.1.1 $  
  4.  *   $Date: 1996/05/04 21:55:55 $      
  5.  */ 
  6. /**********************************************************************
  7. * EXODUS Database Toolkit Software
  8. * Copyright (c) 1991 Computer Sciences Department, University of
  9. *                    Wisconsin -- Madison
  10. * All Rights Reserved.
  11. *
  12. * Permission to use, copy, modify and distribute this software and its
  13. * documentation is hereby granted, provided that both the copyright
  14. * notice and this permission notice appear in all copies of the
  15. * software, derivative works or modified versions, and any portions
  16. * thereof, and that both notices appear in supporting documentation.
  17. *
  18. * THE COMPUTER SCIENCES DEPARTMENT OF THE UNIVERSITY OF WISCONSIN --
  19. * MADISON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.  
  20. * THE DEPARTMENT DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
  21. * WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  22. *
  23. * The EXODUS Project Group requests users of this software to return 
  24. * any improvements or extensions that they make to:
  25. *
  26. *   EXODUS Project Group 
  27. *     c/o David J. DeWitt and Michael J. Carey
  28. *   Computer Sciences Department
  29. *   University of Wisconsin -- Madison
  30. *   Madison, WI 53706
  31. *
  32. *     or exodus@cs.wisc.edu
  33. *
  34. * In addition, the EXODUS Project Group requests that users grant the 
  35. * Computer Sciences Department rights to redistribute these changes.
  36. **********************************************************************/
  37.  
  38. #include "sysdefs.h"
  39. #include "ess.h"
  40. #include "checking.h"
  41. #include "trace.h"
  42. #include "error.h"
  43. #include "list.h"
  44. #include "pool.h"
  45. #include "tid.h"
  46. #include "io.h"
  47. #include "lock.h"
  48. #include "object.h"
  49. #include "msgdefs.h"
  50. #include "thread.h"
  51. #include "semaphore.h"
  52. #include "latch.h"
  53. #include "link.h"
  54. #include "lsn.h"
  55. #include "bf.h"
  56. #include "volume.h"
  57. #include "openlog.h"
  58. #include "trans.h"
  59. #include "logrecs.h"
  60. #include "logaction.h"
  61. #include "logprepare.h"
  62. #include "util_funcs.h"
  63. #include "log_intfuncs.h"
  64. #include "log_extfuncs.h"
  65. #include "recover_intfuncs.h"
  66. #include "recover_extfuncs.h"
  67. #include "trans_extfuncs.h"
  68. #include "thread_globals.h"
  69. #include "trans_globals.h"
  70. #include "distr.h"
  71. #include "distr_globals.h"
  72.  
  73.  
  74.  void
  75. analyzeServerPrepare (
  76.  
  77.     register LOGRECORDHDR    *record 
  78. )
  79. {
  80.     
  81.     register TRANSREC            *transRec;
  82.     register SERVERPREPAREHDR     *prepareHdr;
  83.  
  84.  
  85.     TRPRINT(TR_LOG|TR_RECOVER, TR_LEVEL_1, ("recordLSN:%d tid:%x type:%d action:%d",
  86.             record->recordLSN.offset, record->tid, record->type, record->action));
  87.  
  88.     /*
  89.      *    check to see if there is a transaction record
  90.      */
  91.     if ((transRec = findTransRec(record->tid)) == NULL)    {
  92.  
  93.         SM_ERROR(TYPE_LOG, esmINTERNAL);
  94.         return;
  95.     }
  96.  
  97.     /*
  98.      *  process the record
  99.      */
  100.     switch (record->action) {
  101.  
  102.         case LOG_ACTION_DISTR_SERVER_PREPARE_VOL:
  103.         case LOG_ACTION_DISTR_SERVER_PREPARE_LOCK: 
  104.         case LOG_ACTION_DISTR_SERVER_PREPARE_VOL_LOCK:
  105.  
  106.             return;
  107.             break;
  108.  
  109.         case LOG_ACTION_DISTR_SERVER_PREPARE_HDR:
  110.  
  111.             prepareHdr = (SERVERPREPAREHDR *) GET_LOG_IMAGE(record, 0);
  112.             transRec->prepareLSN = prepareHdr->prepareLSN;
  113.             break;
  114.  
  115.         case NULL:
  116.  
  117.             /*
  118.              *  mark the state of the transaction
  119.              */
  120.             transRec->transState = T_PREPARED;
  121.  
  122.             /*
  123.              *  add this transRec to list of distributed transactions
  124.              */
  125.             listEnq( &(ServerDistrTransList), &(transRec->distrTransList) );
  126.  
  127.             /*
  128.              *  increment the number of active distributed transactions
  129.              */
  130.             numActiveServerDistrTrans++;
  131.  
  132.             break;
  133.  
  134.         default:
  135.  
  136.             TRPRINT(TR_RECOVER, TR_LEVEL_1,
  137.                 ("unknown action %d", record->action));
  138.             SM_ERROR(TYPE_FATAL, esmINTERNAL);
  139.             break;
  140.             
  141.     }
  142. }
  143.