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100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 2005
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* Sleepycat Software. All rights reserved.
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*
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* $Id: txn_failchk.c,v 12.2 2005/10/13 00:51:51 bostic Exp $
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*/
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#include "db_config.h"
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#endif
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#include "db_int.h"
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#include "dbinc/txn.h"
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/*
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* __txn_failchk --
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* Check for transactions started by dead threads of control.
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*
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* PUBLIC: int __txn_failchk __P((DB_ENV *));
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*/
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int
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__txn_failchk(dbenv)
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DB_ENV *dbenv;
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{
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DB_TXN *ktxn, *txn;
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DB_TXNMGR *mgr;
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DB_TXNREGION *region;
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TXN_DETAIL *ktd, *td;
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db_threadid_t tid;
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int ret;
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char buf[DB_THREADID_STRLEN];
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pid_t pid;
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mgr = dbenv->tx_handle;
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region = mgr->reginfo.primary;
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retry: TXN_SYSTEM_LOCK(dbenv);
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SH_TAILQ_FOREACH(td, ®ion->active_txn, links, __txn_detail) {
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/*
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* If this is a child transaction, skip it.
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* The parent will take care of it.
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*/
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if (td->parent != INVALID_ROFF)
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continue;
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/*
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* If the txn is prepared, then it does not matter
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* what the state of the thread is.
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*/
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if (td->status == TXN_PREPARED)
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continue;
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/* If the thread is still alive, it's not a problem. */
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if (dbenv->is_alive(dbenv, td->pid, td->tid))
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continue;
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if (F_ISSET(td, TXN_DTL_INMEMORY))
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return (__db_failed(dbenv,
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"Transaction has in memory logs",
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td->pid, td->tid));
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/* Abort the transaction. */
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TXN_SYSTEM_UNLOCK(dbenv);
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if ((ret = __os_calloc(dbenv, 1, sizeof(DB_TXN), &txn)) != 0)
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return (ret);
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__txn_continue(dbenv, txn, td);
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F_SET(txn, TXN_MALLOC);
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SH_TAILQ_FOREACH(ktd, &td->kids, klinks, __txn_detail) {
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if (F_ISSET(ktd, TXN_DTL_INMEMORY))
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return (__db_failed(dbenv,
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"Transaction has in memory logs",
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td->pid, td->tid));
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if ((ret =
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__os_calloc(dbenv, 1, sizeof(DB_TXN), &ktxn)) != 0)
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return (ret);
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__txn_continue(dbenv, ktxn, ktd);
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F_SET(ktxn, TXN_MALLOC);
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ktxn->parent = txn;
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TAILQ_INSERT_HEAD(&txn->kids, txn, klinks);
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}
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TAILQ_INSERT_TAIL(&mgr->txn_chain, txn, links);
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pid = td->pid;
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tid = td->tid;
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(void)dbenv->thread_id_string(dbenv, pid, tid, buf);
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__db_msg(dbenv,
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"Aborting txn %#lx: %s", (u_long)txn->txnid, buf);
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if ((ret = __txn_abort(txn)) != 0)
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return (__db_failed(dbenv,
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"Transaction abort failed", pid, tid));
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goto retry;
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}
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TXN_SYSTEM_UNLOCK(dbenv);
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return (0);
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}
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