English
- /*
- * ===========================================================================
- * PRODUCTION $Log: ncbiobj.inl,v $
- * PRODUCTION Revision 1000.0 2003/10/29 15:05:06 gouriano
- * PRODUCTION PRODUCTION: IMPORTED [ORIGINAL] Dev-tree R1.10
- * PRODUCTION
- * ===========================================================================
- */
- #if defined(CORELIB___NCBIOBJ__HPP) && !defined(CORELIB___NCBIOBJ__INL)
- #define CORELIB___NCBIOBJ__INL
- /* $Id: ncbiobj.inl,v 1000.0 2003/10/29 15:05:06 gouriano Exp $
- * ===========================================================================
- *
- * PUBLIC DOMAIN NOTICE
- * National Center for Biotechnology Information
- *
- * This software/database is a "United States Government Work" under the
- * terms of the United States Copyright Act. It was written as part of
- * the author's official duties as a United States Government employee and
- * thus cannot be copyrighted. This software/database is freely available
- * to the public for use. The National Library of Medicine and the U.S.
- * Government have not placed any restriction on its use or reproduction.
- *
- * Although all reasonable efforts have been taken to ensure the accuracy
- * and reliability of the software and data, the NLM and the U.S.
- * Government do not and cannot warrant the performance or results that
- * may be obtained by using this software or data. The NLM and the U.S.
- * Government disclaim all warranties, express or implied, including
- * warranties of performance, merchantability or fitness for any particular
- * purpose.
- *
- * Please cite the author in any work or product based on this material.
- *
- * ===========================================================================
- *
- * Author: Eugene Vasilchenko
- *
- * File Description:
- * Standard CObject and CRef classes for reference counter based GC.
- * Inline functions.
- *
- */
- inline
- bool CObject::ObjectStateCanBeDeleted(TCount count)
- {
- return (count & eStateBitsInHeap) != 0;
- }
- inline
- bool CObject::ObjectStateValid(TCount count)
- {
- return count >= TCount(eCounterValid);
- }
- inline
- bool CObject::ObjectStateReferenced(TCount count)
- {
- return count >= TCount(eCounterValid + eCounterStep);
- }
- inline
- bool CObject::ObjectStateDoubleReferenced(TCount count)
- {
- return count >= TCount(eCounterValid + eCounterStep * 2);
- }
- inline
- bool CObject::ObjectStateReferencedOnlyOnce(TCount count)
- {
- return ObjectStateReferenced(count) &&
- !ObjectStateDoubleReferenced(count);
- }
- inline
- bool CObject::CanBeDeleted(void) const THROWS_NONE
- {
- return ObjectStateCanBeDeleted(m_Counter.Get());
- }
- inline
- bool CObject::Referenced(void) const THROWS_NONE
- {
- return ObjectStateReferenced(m_Counter.Get());
- }
- inline
- bool CObject::ReferencedOnlyOnce(void) const THROWS_NONE
- {
- return ObjectStateReferencedOnlyOnce(m_Counter.Get());
- }
- inline
- CObject& CObject::operator=(const CObject& ) THROWS_NONE
- {
- return *this;
- }
- inline
- void CObject::AddReference(void) const
- {
- TCount newCount = m_Counter.Add(eCounterStep);
- if ( !ObjectStateReferenced(newCount) ) {
- m_Counter.Add(-eCounterStep); // undo
- CheckReferenceOverflow(newCount - eCounterStep);
- }
- }
- inline
- void CObject::RemoveReference(void) const
- {
- TCount newCount = m_Counter.Add(-eCounterStep);
- if ( !ObjectStateReferenced(newCount) ) {
- RemoveLastReference();
- }
- }
- /*
- * ===========================================================================
- * $Log: ncbiobj.inl,v $
- * Revision 1000.0 2003/10/29 15:05:06 gouriano
- * PRODUCTION: IMPORTED [ORIGINAL] Dev-tree R1.10
- *
- * Revision 1.10 2003/10/20 20:35:31 ucko
- * Make include guards consistent with ncbiobj.hpp's again, so the build
- * doesn't totally break.
- *
- * Revision 1.9 2003/09/17 15:20:45 vasilche
- * Moved atomic counter swap functions to separate file.
- * Added CRef<>::AtomicResetFrom(), CRef<>::AtomicReleaseTo() methods.
- *
- * Revision 1.8 2003/08/12 12:04:49 siyan
- * Changed reference to AddReferenceOverflow() to its new name of
- * CheckReferenceOverflow().
- *
- * Revision 1.7 2002/05/23 22:24:21 ucko
- * Use low-level atomic operations for reference counts
- *
- * Revision 1.6 2002/04/11 20:39:18 ivanov
- * CVS log moved to end of the file
- *
- * Revision 1.5 2001/03/26 21:22:51 vakatov
- * Minor cosmetics
- *
- * Revision 1.4 2001/03/13 22:43:49 vakatov
- * Made "CObject" MT-safe
- * + CObject::DoDeleteThisObject()
- *
- * Revision 1.3 2000/11/01 21:20:34 vasilche
- * Fixed missing new[] and delete[] on MSVC.
- *
- * Revision 1.2 2000/11/01 20:35:02 vasilche
- * Fixed detection of heap objects.
- * Removed ECanDelete enum and related constructors.
- *
- * Revision 1.1 2000/10/13 16:39:16 vasilche
- * Forgot to add file.
- *
- * ===========================================================================
- */
- #endif /* def CORELIB___NCBIOBJ__HPP && ndef CORELIB___NCBIOBJ__INL */
