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- /*
- * $RCSfile: quiesceTrans.c,v $
- * $Revision: 1.1.1.1 $
- * $Date: 1996/05/04 21:56:02 $
- */
- /**********************************************************************
- * EXODUS Database Toolkit Software
- * Copyright (c) 1991 Computer Sciences Department, University of
- * Wisconsin -- Madison
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * THE COMPUTER SCIENCES DEPARTMENT OF THE UNIVERSITY OF WISCONSIN --
- * MADISON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.
- * THE DEPARTMENT DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
- * WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * The EXODUS Project Group requests users of this software to return
- * any improvements or extensions that they make to:
- *
- * EXODUS Project Group
- * c/o David J. DeWitt and Michael J. Carey
- * Computer Sciences Department
- * University of Wisconsin -- Madison
- * Madison, WI 53706
- *
- * or exodus@cs.wisc.edu
- *
- * In addition, the EXODUS Project Group requests that users grant the
- * Computer Sciences Department rights to redistribute these changes.
- **********************************************************************/
-
- #include "sysdefs.h"
- #include "ess.h"
- #include "checking.h"
- #include "trace.h"
- #include "error.h"
- #include "list.h"
- #include "pool.h"
- #include "tid.h"
- #include "io.h"
- #include "lock.h"
- #include "object.h"
- #include "msgdefs.h"
- #include "thread.h"
- #include "semaphore.h"
- #include "link.h"
- #include "lsn.h"
- #include "latch.h"
- #include "bf.h"
- #include "volume.h"
- #include "trans.h"
- #include "logrecs.h"
- #include "openlog.h"
- #include "threadstate.h"
- #include "trans_intfuncs.h"
- #include "trans_extfuncs.h"
- #include "log_extfuncs.h"
- #include "lm_extfuncs.h"
- #include "thread_globals.h"
- #include "trans_globals.h"
-
-
- void
- quiesceTrans (
-
- register TRANSREC *transRec,
- int error
- )
- {
-
- TRPRINT(TR_TRANS, TR_LEVEL_1, ("threadCount:%d transState:%d",
- transRec->threadCount, transRec->transState));
-
- /*
- * mark this thread as the master
- */
- transRec->masterThread = Active;
-
- /*
- * check to see if there are any threads that
- * are executing on behalf the transaction
- */
- if (transRec->threadCount > 0) {
-
- /*
- * assert the transaction state
- */
- SM_ASSERT(LEVEL_1, ((transRec->transState == T_ACTIVE) ||
- (transRec->transState == T_LATENT)));
-
- /*
- * check to see if the transaction is active
- */
- if (transRec->transState == T_ACTIVE) {
-
- /*
- * release lock waiters
- */
- releaseLockBlocked(transRec, error);
-
- /*
- * release log waiters if the transaction is
- * to be aborted. If it is being committed, then
- * they should not be releases since they may be
- * writing important log records.
- if ((transRec->intent != T_COMMIT) && (transRec->intent != T_PREPARED)) {
- releaseLogBlocked(transRec, error);
- }
- */
- }
-
- /*
- * place the transaction in quiesce state
- */
- transRec->transState = T_QUIESCE;
-
- /*
- * wait for all other tasks to finish
- */
- if (waitList( &(transRec->quiesceList), THREAD_TRANS_QUIESCE_WAIT )) {
-
- SM_ERROR(TYPE_FATAL, Active->errno);
- }
-
- /*
- * there should be no other active tasks
- */
- SM_ASSERT(LEVEL_3, transRec->threadCount == 0);
-
- } else {
-
- /*
- * just place the transaction in the quiesce state
- */
- transRec->transState = T_QUIESCE;
- }
- }
-