// $Id$
//
// Copyright (C) 2006
// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
//     Stefan Bund <stefan.bund@fokus.fraunhofer.de>
//
// 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.

// Definition of inline non-template functions

#include "Packet.ih"

// Custom includes

#define prefix_ inline
///////////////////////////////cci.p///////////////////////////////////////

prefix_ senf::impl::PacketImpl::PacketImpl()
    : data_(), interpreters_(), refcount_(1)
{
    SATCOM_PKF_REFC_MSG("] PacketImpl::PacketImpl (" << this << "): refcount_ = 1\n");
}

prefix_ senf::impl::PacketImpl::PacketImpl(unsigned size, Packet::byte initValue)
    : data_(size,initValue), interpreters_(), refcount_(1)
{
    SATCOM_PKF_REFC_MSG("] PacketImpl::PacketImpl (" << this << "): refcount_ = 1\n");
}

prefix_ senf::impl::PacketImpl::~PacketImpl()
{
    BOOST_ASSERT( !refcount_ );
    SATCOM_PKF_REFC_MSG("] PacketImpl::~PacketImpl (" << this << ")\n");
}

// PacketImpl::add_ref and PacketImpl::release are only called from
// intrusive_ptr_add_ref and intrusive_ptr_release
prefix_ void senf::impl::PacketImpl::add_ref()
{
    ++refcount_;
    SATCOM_PKF_REFC_MSG("] PacketImpl::add_ref (" << this << "): refcount_ = " << refcount_ << "\n");
}

prefix_ bool senf::impl::PacketImpl::release()
{
    BOOST_ASSERT( refcount_ > 0 );
    --refcount_;
    SATCOM_PKF_REFC_MSG("] PacketImpl::release (" << this << "): refcount_ = " << refcount_ << "\n");
    return ! refcount_;
}

prefix_ void senf::impl::PacketImpl::truncateInterpreters(Packet const * p)
{
    BOOST_ASSERT( p->impl_ == this );
    this->interpreters_.erase(p->self_,this->interpreters_.end());
}

prefix_ void senf::impl::PacketImpl::truncateInterpretersAfter(Packet const * p)
{
    BOOST_ASSERT( p->impl_ == this );
    this->interpreters_.erase(boost::next(p->self_),this->interpreters_.end());
}

prefix_ senf::impl::PacketImpl* senf::impl::PacketImpl::impl(Packet const * p)
{
    return p->impl_;
}

/*
prefix_ std::ostream & senf::operator<<(std::ostream & os, Packet const & packet)
{
    packet.dump(os);
    return os;
}
*/

// These methods are called by the user codes Packet::ptr's. They
// refcount both the Packet and the owning PacketImpl.
prefix_ void senf::intrusive_ptr_add_ref(Packet const * p)
{
    impl::PacketImpl::packet_add_ref(p);
}

prefix_ void senf::intrusive_ptr_release(Packet * p)
{
    impl::PacketImpl::packet_release(p);
}

prefix_ void senf::impl::intrusive_ptr_add_ref(PacketImpl * p)
{
    p->add_ref();
}

prefix_ void senf::impl::intrusive_ptr_release(PacketImpl * p)
{
    if (p->release())
        delete p;
}

///////////////////////////////////////////////////////////////////////////
// class Packet

prefix_ senf::Packet::iterator senf::Packet::begin()
    const
{
    return impl_->data_.begin()+begin_;
}

prefix_ senf::Packet::iterator senf::Packet::end()
    const
{
    return impl_->data_.begin()+end_;
}

prefix_ size_t senf::Packet::size()
    const
{
    return end_-begin_;
}

prefix_ senf::Packet::ptr senf::Packet::prev()
    const
{
    if (this->self_ == this->impl_->interpreters_.begin())
        return ptr(0);
    // Re-converting the to a smart pointer is correct here, since the
    // shared_ptr really uses the intrusive refcount which makes this
    // operation safe ...
    return ptr(boost::prior(this->self_)->get(),true);
}

prefix_ senf::Packet::ptr senf::Packet::head()
    const
{
    // Re-converting the to a smart pointer is correct here, since the
    // shared_ptr really uses the intrusive refcount which makes this
    // operation safe ...
    return ptr(this->impl_->interpreters_.front().get(),true);
}

prefix_  senf::Packet::~Packet()
{
    /** \fixme This is bad ... we cannot check this since this
        assertion fails at the moment if the Packet constructor throws
        ... hrmpf ... we really need to initialize refcount_ to 0 and
        remove the 'false' argument to the ptr constructor in create */
    // BOOST_ASSERT( !this->refcount_  && !this->impl_ );
    SATCOM_PKF_REFC_MSG("] Packet::~Packet (" << this << ")\n");
}

prefix_ void senf::Packet::add_ref()
    const
{
    ++this->refcount_;
    SATCOM_PKF_REFC_MSG("] Packet::add_ref (" << this << "): refcount_ = " << this->refcount_ << "\n");
}

prefix_ bool senf::Packet::release()
{
    BOOST_ASSERT( this->refcount_ > 0 );
    --this->refcount_;
    SATCOM_PKF_REFC_MSG("] Packet::release (" << this << "): refcount_ = " << this->refcount_ << "\n");
    return !this->refcount_ && !this->impl_;
}

prefix_ bool senf::Packet::unlink()
{
    SATCOM_PKF_REFC_MSG("] Packet::unlink (" << this << "): refcount_ = " << this->refcount_ << "\n");
    this->impl_ = 0;
    this->begin_ = this->end_;
    return !this->refcount_;
}

///////////////////////////////cci.e///////////////////////////////////////
#undef prefix_


// Local Variables:
// mode: c++
// fill-column: 100
// c-file-style: "senf"
// indent-tabs-mode: nil
// ispell-local-dictionary: "american"
// End: