C++ (Cpp) MasterCMCommand::getMinCachedVersion Examples

Example #1

File: objectCM.cpp Project: OlafRocket/Collage

bool ObjectCM::_initSlave( const MasterCMCommand& command,
                           const uint128_t& replyVersion, bool replyUseCache )
{
#if 0
    LBLOG( LOG_OBJECTS ) << "Object id " << _object->_id << " v" << _version
                         << ", instantiate on " << node->getNodeID()
                         << std::endl;
#endif

#ifndef NDEBUG
    const uint128_t& version = command.getRequestedVersion();
    if( version != VERSION_OLDEST && version < replyVersion )
        LBINFO << "Mapping version " << replyVersion << " instead of "
               << version << std::endl;
#endif

    if( replyUseCache &&
        command.getMinCachedVersion() <= replyVersion &&
        command.getMaxCachedVersion() >= replyVersion )
    {
#ifdef CO_INSTRUMENT_MULTICAST
        ++_hit;
#endif
        _sendMapSuccess( command, false );
        _sendMapReply( command, replyVersion, true, replyUseCache, false );
        return true;
    }

    lunchbox::ScopedFastWrite mutex( _lock );
    if( !_object )
    {
        LBWARN << "Map to detached object requested" << std::endl;
        return false;
    }

#ifdef CO_INSTRUMENT_MULTICAST
    ++_miss;
#endif
    replyUseCache = false;

    _sendMapSuccess( command, true );

    // send instance data
    ObjectInstanceDataOStream os( this );

    os.enableMap( replyVersion, command.getNode(), command.getInstanceID( ));
    _object->getInstanceData( os );
    os.disable();
    if( !os.hasSentData( ))
        // no data, send empty command to set version
        _sendEmptyVersion( command, replyVersion, true /* mc */ );

    _sendMapReply( command, replyVersion, true, replyUseCache, true );
    return true;
}

Example #2

File: fullMasterCM.cpp Project: tribal-tec/Collage

bool FullMasterCM::_initSlave( const MasterCMCommand& command,
                               const uint128_t& /*replyVersion*/,
                               bool replyUseCache )
{
    _checkConsistency();

    const uint128_t& version = command.getRequestedVersion();
    const uint128_t oldest = _instanceDatas.front()->os.getVersion();
    uint128_t start = (version == VERSION_OLDEST || version < oldest ) ?
                          oldest : version;
    uint128_t end = _version;

#ifndef NDEBUG
    if( version != VERSION_OLDEST && version < start )
        LBINFO << "Mapping version " << start << " instead of requested "
               << version << " for " << lunchbox::className( _object )
               << " " << ObjectVersion( _object->getID(), _version ) << " of "
               << _instanceDatas.size() << "/" << _nVersions << std::endl;
#endif

    const uint128_t& minCachedVersion = command.getMinCachedVersion();
    const uint128_t& maxCachedVersion = command.getMaxCachedVersion();
    const uint128_t replyVersion = start;
    if( replyUseCache )
    {
        if( minCachedVersion <= start && maxCachedVersion >= start )
        {
#ifdef CO_INSTRUMENT_MULTICAST
            _hit += maxCachedVersion + 1 - start;
#endif
            start = maxCachedVersion + 1;
        }
        else if( maxCachedVersion == end )
        {
            end = LB_MAX( start, minCachedVersion - 1 );
#ifdef CO_INSTRUMENT_MULTICAST
            _hit += _version - end;
#endif
        }
        // TODO else cached block in the middle, send head and tail elements
    }

#if 0
    LBLOG( LOG_OBJECTS )
        << *_object << ", instantiate on " << node->getNodeID() << " with v"
        << ((requested == VERSION_OLDEST) ? oldest : requested) << " ("
        << requested << ") sending " << start << ".." << end << " have "
        << _version - _nVersions << ".." << _version << " "
        << _instanceDatas.size() << std::endl;
#endif
    LBASSERT( start >= oldest );

    bool dataSent = false;

    // send all instance datas from start..end
    InstanceDataDeque::iterator i = _instanceDatas.begin();
    while( i != _instanceDatas.end() && (*i)->os.getVersion() < start )
        ++i;

    for( ; i != _instanceDatas.end() && (*i)->os.getVersion() <= end; ++i )
    {
        if( !dataSent )
        {
            _sendMapSuccess( command, true );
            dataSent = true;
        }

        InstanceData* data = *i;
        LBASSERT( data );
        data->os.sendMapData( command.getRemoteNode(),
                              command.getInstanceID( ));

#ifdef CO_INSTRUMENT_MULTICAST
        ++_miss;
#endif
    }

    if( !dataSent )
    {
        _sendMapSuccess( command, false );
        _sendMapReply( command, replyVersion, true, replyUseCache, false );
    }
    else
        _sendMapReply( command, replyVersion, true, replyUseCache, true );

#ifdef CO_INSTRUMENT_MULTICAST
    if( _miss % 100 == 0 )
        LBINFO << "Cached " << _hit << "/" << _hit + _miss
               << " instance data transmissions" << std::endl;
#endif
    return true;
}