49ccc066a1
git-svn-id: https://svn.code.sf.net/p/flaim/code/trunk@480 0109f412-320b-0410-ab79-c3e0c5ffbbe6
107 lines
2.6 KiB
C++
107 lines
2.6 KiB
C++
//------------------------------------------------------------------------------
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// Desc: B-Tree pool class file
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//
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// Tabs: 3
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//
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// Copyright (c) 2002-2006 Novell, Inc. All Rights Reserved.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the GNU General Public
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// License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, contact Novell, Inc.
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//
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// To contact Novell about this file by physical or electronic mail,
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// you may find current contact information at www.novell.com
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//
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// $Id$
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//------------------------------------------------------------------------------
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#include "flaimsys.h"
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/****************************************************************************
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Desc: Method for initializing the Btree Pool.
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****************************************************************************/
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RCODE F_BtPool::btpInit( void)
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{
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RCODE rc = NE_SFLM_OK;
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flmAssert( !m_bInitialized);
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// Create a mutex to control access to the pool.
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if (RC_BAD( rc = f_mutexCreate( &m_hMutex)))
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{
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goto Exit;
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}
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m_bInitialized = TRUE;
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Exit:
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return rc;
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}
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/****************************************************************************
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Desc: Method to reserve a btree object from the pool.
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****************************************************************************/
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RCODE F_BtPool::btpReserveBtree(
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F_Btree ** ppBtree)
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{
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RCODE rc = NE_SFLM_OK;
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flmAssert( m_bInitialized);
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// Lock the mutex first!
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f_mutexLock( m_hMutex);
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if (m_pBtreeList)
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{
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*ppBtree = m_pBtreeList;
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m_pBtreeList = m_pBtreeList->m_pNext;
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(*ppBtree)->m_pNext = NULL;
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}
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else
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{
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if (( *ppBtree = f_new F_Btree()) == NULL)
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{
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rc = RC_SET( NE_SFLM_MEM);
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goto Exit;
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}
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}
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Exit:
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f_mutexUnlock( m_hMutex);
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return rc;
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}
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/****************************************************************************
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Desc: Method to return a Btree to the pool.
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****************************************************************************/
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void F_BtPool::btpReturnBtree(
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F_Btree ** ppBtree)
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{
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flmAssert( m_bInitialized);
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// Close the Btree
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(*ppBtree)->btClose();
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// Lock the mutex first!
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f_mutexLock( m_hMutex);
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(*ppBtree)->m_pNext = m_pBtreeList;
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m_pBtreeList = *ppBtree;
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*ppBtree = NULL;
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f_mutexUnlock( m_hMutex);
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}
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