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 / redo / redoServerPrepare.c < prev    next >
Encoding:
C/C++ Source or Header  |  1996-05-05  |  4.2 KB  |  173 lines
  1. /*
  2.  *   $RCSfile: redoServerPrepare.c,v $  
  3.  *   $Revision: 1.1.1.1 $  
  4.  *   $Date: 1996/05/04 21:55:58 $      
  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 "logprepare.h"
  61. #include "logaction.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 "redo_extfuncs.h"
  68. #include "redo_intfuncs.h"
  69. #include "bf_extfuncs.h"
  70. #include "thread_globals.h"
  71. #include "trans_extfuncs.h"
  72. #include "distr.h"
  73. #include "distr_globals.h"
  74.  
  75.  
  76.  void
  77. redoServerPrepare (
  78.  
  79.     register LOGRECORDHDR    *record,
  80.     register LSNOFFSET        unused 
  81. )
  82. {
  83.  
  84.     TRANSREC                *transRec;
  85.     int                        numLocks, numVols;
  86.  
  87.  
  88.     TRACE(TR_LOG|TR_RECOVER, TR_LEVEL_1);
  89.  
  90.     /*
  91.      *    get the transRec for this transaction
  92.      */
  93.     if ((transRec = findTransRec(record->tid)) == NULL)    {
  94.  
  95.         /*
  96.          *    the transaction completed - do nothing
  97.          */
  98.         return;
  99.     }
  100.  
  101.     TRPRINT(TR_LOG|TR_RECOVER, TR_LEVEL_1, ("action %d", record->action));
  102.     /*
  103.      *    process the record
  104.      */
  105.     switch (record->action)    {
  106.  
  107.         case LOG_ACTION_DISTR_SERVER_PREPARE_VOL_LOCK:
  108.  
  109.             numLocks = GET_LOG_IMAGE_SIZE(record, 0)/sizeof(PREPARELOCKINFO);
  110.             redoAcquireLocks(transRec, numLocks,
  111.                         (PREPARELOCKINFO *) GET_LOG_IMAGE(record, 0));
  112.  
  113.             numVols = GET_LOG_IMAGE_SIZE(record, 1)/sizeof(VOLIDNAME);
  114.             redoPreparedVols(transRec, numVols,
  115.                         (VOLIDNAME *) GET_LOG_IMAGE(record, 1));
  116.  
  117.  
  118.             break;
  119.  
  120.         case LOG_ACTION_DISTR_SERVER_PREPARE_LOCK:
  121.  
  122.             numLocks = GET_LOG_IMAGE_SIZE(record, 0)/sizeof(PREPARELOCKINFO);
  123.             redoAcquireLocks(transRec, numLocks,
  124.                         (PREPARELOCKINFO *) GET_LOG_IMAGE(record, 0));
  125.  
  126.  
  127.             break;
  128.  
  129.         case LOG_ACTION_DISTR_SERVER_PREPARE_VOL:
  130.  
  131.             numVols = GET_LOG_IMAGE_SIZE(record, 0)/sizeof(VOLIDNAME);
  132.             redoPreparedVols(transRec, numVols,
  133.                         (VOLIDNAME *) GET_LOG_IMAGE(record, 0));
  134.  
  135.             break;
  136.  
  137.         case LOG_ACTION_DISTR_SERVER_PREPARE_HDR:
  138.             
  139.             redoServerPrepareHdr(transRec, (SERVERPREPAREHDR *) GET_LOG_IMAGE(record, 0));
  140.  
  141.             transRec->logRecordCount++;
  142.             transRec->logSpace += record->length;
  143.  
  144.             break;
  145.  
  146.         case NULL:
  147.             
  148.             if ((transRec->transState != T_PREPARED) &&
  149.                 (transRec->transState != T_COMMIT)) {
  150.  
  151.                 /*
  152.                  *    this should not happen now since we have
  153.                  *    atomic logging cum state change
  154.                  */
  155.                 SM_ERROR(TYPE_LOG, esmINTERNAL);
  156.  
  157.             }
  158.  
  159.             transRec->logRecordCount++;
  160.             transRec->logSpace += record->length;
  161.  
  162.             break;
  163.  
  164.         default:
  165.  
  166.  
  167.             TRPRINT(TR_RECOVER, TR_LEVEL_1,
  168.                 ("redoServerPrepare : unknown action %d", record->action));
  169.             SM_ERROR(TYPE_FATAL, esmINTERNAL);
  170.             break;
  171.     }
  172. }
  173.