jni/libucommon/sources/commoncpp/pointer.cpp

// Copyright (C) 2004-2005 Open Source Telecom Corporation.
// Copyright (C) 2006-2010 David Sugar, Tycho Softworks.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
//
// This exception applies only to the code released under the name GNU
// Common C++.  If you copy code from other releases into a copy of GNU
// Common C++, as the General Public License permits, the exception does
// not apply to the code that you add in this way.  To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for GNU Common C++, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.
//

#include <ucommon-config.h>
#include <commoncpp/config.h>
#include <commoncpp/export.h>
#include <commoncpp/thread.h>
#include <commoncpp/object.h>

using namespace COMMONCPP_NAMESPACE;

RefObject::~RefObject() {}

void RefPointer::enterLock(void) {}

void RefPointer::leaveLock(void) {}

void RefPointer::detach(void)
{
    if(ref) {
        enterLock();
        --(ref->refCount);
        if(!ref->refCount)
            delete ref;
        leaveLock();
        ref = NULL;
    }
}

RefPointer::RefPointer(RefObject *obj)
{
    enterLock();
    ++obj->refCount;
    leaveLock();
    ref = obj;
}

RefPointer::RefPointer(const RefPointer &ptr)
{
    detach();
    ref = ptr.ref;
    if(ref) {
        enterLock();
        ++ref->refCount;
        leaveLock();
    }
}

RefPointer::~RefPointer()
{
    detach();
}

void *RefPointer::getObject() const
{
    if(ref)
        return ref->getObject();

    return NULL;
}

bool RefPointer::operator!() const
{
    if(ref && ref->refCount == 1)
        return true;

    return false;
}