C++ DVLOG函數代碼示例

void MembershipTableMgr::handleNormalJoinEvent(const MemberWrapper& member) {
  function_footprint();
  queue.push(member);
  if(joining) {
    DVLOG(0) << "$$$$$$$$$$$$$$$$$$$$$$$$$$";
    DVLOG(0) << "$$$$$$$$$$$$$$$$$$$$$$$$$$";
    DVLOG(0) << "current joining member queue size: " << queue.unsafe_size();
    DVLOG(0) << "$$$$$$$$$$$$$$$$$$$$$$$$$$";
    DVLOG(0) << "$$$$$$$$$$$$$$$$$$$$$$$$$$";
    return;
  }
  while(!queue.empty()) {
    joining.store(true);
    MemberWrapper joined_member;
    queue.try_pop(joined_member);
    // leading generate whole member table and send to joining member.
    auto wholeMemberTable = std::make_shared<WholeMembershipTableEvent>();
    genMembershipTable(*wholeMemberTable->mutable_table());
    ResultCode rs;
    rs = multicastMemberMessage(WHOLE_MEMBERSHIP_TABLE, wholeMemberTable);
    if (rs != RC_SUCCESS) {
      LOG(ERROR)<< getErrorDescription(rs);
      return;
    }
    // leading send delta member to all members.
    auto deltaMember = std::make_shared<DeltaMemberEvent>();
    deltaMember->set_position(findAddPos());
    deltaMember->mutable_member()->CopyFrom(joined_member.getMember());
    rs = multicastMemberMessage(DELTA_MEMBER_AND_JOIN_POSITION, deltaMember);
    if (rs != RC_SUCCESS) {
      LOG(ERROR)<< getErrorDescription(rs);
      return;
    }
  }
}

    void serialize( Archive & ar, const unsigned int version )
    {
        DVLOG(2) << "[BDF::serialize] serialize BDFBase\n";
#if 0
        ar & M_order;
        ar & M_name;
        ar & M_time;

        ar & M_n_restart;

        ar & M_Tf;
#endif
        //ar & M_time_orders;
        ar & boost::serialization::make_nvp( "time_values", M_time_values_map );

        //DVLOG(2) << "[BDF::serialize] time orders size: " << M_time_orders.size() << "\n";
        DVLOG(2) << "[BDF::serialize] time values size: " << M_time_values_map.size() << "\n";

        for ( auto it = M_time_values_map.begin(), en = M_time_values_map.end(); it!=en; ++it )
        {
            //LOG(INFO) << "[Bdf] order " << i << "=" << M_time_orders[i] << "\n";
            DVLOG(2) << "[Bdf::serialize] value " << *it << "\n";

        }

        DVLOG(2) << "[BDF::serialize] serialize BDFBase done\n";
    }

A_Entry GlobalQueue<T>::push_reserve ( bool ignore ) {
  CHECK( isMaster() );

  Grappa::Metrics::global_queue_stats.record_push_reserve_reply( Grappa_sizeof_delegate_func_reply< bool, A_Entry >() );

  DVLOG(5) << "push_reserve";

  CHECK( capacity > 0 );
  if ( (tail % capacity == head % capacity) && (tail != head) ) {
    return make_global( static_cast< QueueEntry<T> * >( NULL ) ); // no room
  } else {
    A_Entry assigned = queueBase + (tail % capacity); 
    tail++;

    // if there are any consumers, wake oldest and give the address just produced
    if ( pullReserveWaiters.size() > 0 ) {
      CHECK( head == tail-1 ) << "Size should be exactly one, since there are waiters and one value was just produced";
      DVLOG(5) << "push_reserve: found waiters";

      A_Entry granted = assigned;
      head++;

      A_D_A_Entry w = pullReserveWaiters.front();
      pullReserveWaiters.pop();

      pull_reserve_sendreply( w, &granted, true );
    }

    return assigned;
  }
}

    static void UpdateComponent( spaceT const& Xh, Epetra_MultiVector& sol, Epetra_MultiVector& comp )
    {
        Epetra_Map componentMap ( epetraMap( Xh->template functionSpace<index>()->map() ) );
        Epetra_Map globalMap ( epetraMap( Xh->map() ) );

        int shift = Xh->nDofStart( index );

        int Length = comp.MyLength();

        for ( int i=0; i < Length; i++ )
        {
            int compGlobalID = componentMap.GID( i );

            if ( compGlobalID >= 0 )
            {
                int compLocalID = componentMap.LID( compGlobalID );

                int localID = globalMap.LID( compGlobalID+shift );
                //                         int globalID = globalMap.GID(localID);

                DVLOG(2) << "Copy entry component[" << compLocalID << "] to sol[" << localID << "]="
                               <<  sol[0][localID]
                               << "]\n";

                sol[0][localID] = comp[0][compLocalID] ;

                DVLOG(2) << comp[0][compLocalID] << "\n";
            }
        }
    }

void StoreDelegateRddActor::handleRddCreate(const ActorMessagePtr& msg) {
  DVLOG(2) << "StoreDelegateRddActor : handle create store delegate.";
  rawMsg = msg;
  CreateDelegateRddRequest* request = dynamic_cast<CreateDelegateRddRequest*>(msg->getPayload().get());

  idgs::store::MetadataHelper::loadStoreMetadata(request->store_name(), metadata.get());

  ClusterFramework& cluster = ::idgs::util::singleton<ClusterFramework>::getInstance();
  for (int32_t partition = 0; partition < partitionSize; ++partition) {
    int32_t memberId = cluster.getPartitionManager()->getPartition(partition)->getPrimaryMemberId();
    shared_ptr<CreateDelegatePartitionRequest> payload(new CreateDelegatePartitionRequest);
    payload->set_store_name(request->store_name());
    payload->set_partition(partition);
    payload->set_rdd_name(getRddName());

    ActorMessagePtr reqMsg = createActorMessage();
    reqMsg->setOperationName(CREATE_DELEGATE_PARTITION);
    reqMsg->setDestActorId(RDD_SERVICE_ACTOR);
    reqMsg->setDestMemberId(memberId);
    reqMsg->setPayload(payload);

    DVLOG(3) << "RDD \"" << getRddName() << "\" sending create RDD partition to member " << memberId;

    ::idgs::actor::postMessage(reqMsg);
  }
}

typename BackendPetsc<T>::solve_return_type
BackendPetsc<T>::solve( sparse_matrix_type const& A,
                        vector_type& x,
                        vector_type const& b )
{
    M_solver_petsc.setPrefix( this->prefix() );
    M_solver_petsc.setPreconditionerType( this->pcEnumType() );
    M_solver_petsc.setSolverType( this->kspEnumType() );
    if (!M_solver_petsc.initialized())
        M_solver_petsc.attachPreconditioner( this->M_preconditioner );
    M_solver_petsc.setConstantNullSpace( this->hasConstantNullSpace() );
    M_solver_petsc.setFieldSplitType( this->fieldSplitEnumType() );
    M_solver_petsc.setTolerances( _rtolerance=this->rTolerance(),
                                  _atolerance=this->aTolerance(),
                                  _dtolerance=this->dTolerance(),
                                  _maxit = this->maxIterations() );
    M_solver_petsc.setPrecMatrixStructure( this->precMatrixStructure() );
    M_solver_petsc.setMatSolverPackageType( this->matSolverPackageEnumType() );
    M_solver_petsc.setShowKSPMonitor( this->showKSPMonitor() );
    M_solver_petsc.setShowKSPConvergedReason( this->showKSPConvergedReason() );

    auto res = M_solver_petsc.solve( A, x, b, this->rTolerance(), this->maxIterations() );
    DVLOG(2) << "[BackendPetsc::solve] number of iterations : " << res.template get<1>() << "\n";
    DVLOG(2) << "[BackendPetsc::solve]             residual : " << res.template get<2>() << "\n";

    if ( !res.template get<0>() )
        LOG(ERROR) << "Backend " << this->prefix() << " : linear solver failed to converge" << std::endl;

    return res;
} // BackendPetsc::solve

 /// Mark a certain number of things completed. When the global count on all cores goes to 0, all
 /// tasks waiting on the GCE will be woken.
 ///
 /// Note: this can be called in a message handler (e.g. remote completes from stolen tasks).
 void complete(int64_t dec = 1) {
   count -= dec;
   DVLOG(4) << "complete (" << count << ") -- gce(" << this << ")";
   
   // out of work here
   if (count == 0) { // count[dec -> 0]
     // enter cancellable barrier
     send_heap_message(master_core, [this] {
       cores_out--;
       DVLOG(4) << "core entered barrier (cores_out:"<< cores_out <<")";
       
       // if all are in
       if (cores_out == 0) { // cores_out[1 -> 0]
         CHECK_EQ(count, 0);
         // notify everyone to wake
         for (Core c = 0; c < cores(); c++) {
           send_heap_message(c, [this] {
             CHECK_EQ(count, 0);
             DVLOG(3) << "broadcast";
             broadcast(&cv); // wake anyone who was waiting here
             reset(); // reset, now anyone else calling `wait` should fall through
           });
         }
       }
     });
   }
 }

  void try_merge_buddy_recursive( ChunkMap::iterator cmit ) {
    // compute address of buddy
    intptr_t address = cmit->second.address;
    intptr_t buddy_address = (address ^ cmit->second.size);
    DVLOG(5) << cmit->second << " buddy address " << (void *) buddy_address;

    // does it exist?
    ChunkMap::iterator buddy_iterator = chunks_.find( buddy_address );
    if( buddy_iterator != chunks_.end() && 
        buddy_iterator->second.size == cmit->second.size &&
        buddy_iterator->second.in_use == false ) {
      DVLOG(5) << "buddy found! address " << (void *) address << " buddy address " << (void *) buddy_address;

      // remove the higher-addressed chunk
      ChunkMap::iterator higher_iterator = address < buddy_address ? buddy_iterator : cmit;
      remove_from_free_list( higher_iterator );
      chunks_.erase( higher_iterator );

      // keep the the lower-addressed chunk in the map:
      // update its size and move it to the right free list
      ChunkMap::iterator lower_iterator = address < buddy_address ? cmit : buddy_iterator;
      remove_from_free_list( lower_iterator ); // should these be swapped? I think so.
      lower_iterator->second.size *= 2;
      add_to_free_list( lower_iterator );

      // see if we have more to merge
      try_merge_buddy_recursive( lower_iterator );
    }
  }

  void block_until_acquired() {
    if( !acquired_ ) {
      start_acquire();
#ifdef VTRACE_FULL
      VT_TRACER("incoherent block_until_acquired");
#endif
      DVLOG(5) << "Worker " << Grappa::current_worker() 
              << " ready to block on " << *request_address_ 
              << " * " << *count_ ;
      if( !acquired_ ) {
        start_time_ = Grappa::timestamp();
      } else {
        start_time_ = 0;
      }
      while( !acquired_ ) {
      DVLOG(5) << "Worker " << Grappa::current_worker() 
              << " blocking on " << *request_address_ 
              << " * " << *count_ ;
        if( !acquired_ ) {
          thread_ = Grappa::current_worker();
          Grappa::suspend();
          thread_ = NULL;
        }
        DVLOG(5) << "Worker " << Grappa::current_worker() 
                 << " woke up for " << *request_address_ 
                 << " * " << *count_ ;
      }
      IAMetrics::record_wakeup_latency( start_time_, network_time_ );
    }
  }

    static Epetra_MultiVector getComponent( spaceT const& Xh, Epetra_MultiVector const& sol )
    {
        Epetra_Map componentMap ( epetraMap( Xh->template functionSpace<index>()->map() ) );
        Epetra_Map globalMap ( epetraMap( Xh->map() ) );

        //DVLOG(2) << "Component map: " << componentMap << "\n";

        Epetra_MultiVector component( componentMap, 1 );

        int Length = component.MyLength();

        int shift = Xh->nDofStart( index );

        for ( int i=0; i < Length; i++ )
        {
            int compGlobalID = componentMap.GID( i );

            if ( compGlobalID >= 0 )
            {
                int compLocalID = componentMap.LID( compGlobalID );

                int localID = globalMap.LID( compGlobalID+shift );
                //                         int globalID = globalMap.GID(localID);

                DVLOG(2) << "[MyBackend] Copy entry sol[" << localID << "]=" <<  sol[0][localID]
                               << " to component[" << compLocalID << "]\n";

                component[0][compLocalID] = sol[0][localID];

                DVLOG(2) << component[0][compLocalID] << "\n";
            }
        }

        return component;
    }

 T * block_until_pop() {
     DVLOG(5) << __PRETTY_FUNCTION__ << "/" << this << ": blocking until pop with " << s_.get_value() << " now";
     s_.decrement();
     T * result = ptrs_[s_.get_value()];
     DVLOG(5) << __PRETTY_FUNCTION__ << "/" << this << ": finished blocking until pop with " << s_.get_value() << "/" << result;
     return result;
 }

uint32_t InnerTcpConnection::connect(uint32_t memberId, int retry) {
  InnerTcpConnectionState expectedState = INITIAL;
  if(!state.compare_exchange_strong(expectedState, CONNECTING)) {
    DVLOG(2) << "Already connecting to remote peer: " << memberId;
    return 0;
  }
  setPeerMemberId(memberId);
  /// connect to remote peer
  auto ep = ::idgs::util::singleton<idgs::actor::RpcFramework>::getInstance().getNetwork()->getEndPoint(memberId);
  if(ep == NULL) {
    LOG(ERROR) << "Network endpoint of member " << memberId << " is not available.";
    terminate();
    return RC_CLIENT_SERVER_IS_NOT_AVAILABLE;
  }
  auto& end_point = ep->tcpEndPoint;
  DVLOG(0) << "Connecting to remote peer " << memberId << '(' << end_point << ")";
  auto conn = shared_from_this();
  try {
    socket.async_connect(end_point, [conn, retry](const asio::error_code& error) {
      conn->handleConnect(error, retry);
    });
  } catch (std::exception& e) {
    LOG(ERROR) << "Failed to connect to remote peer " << memberId << ", exception: " << e.what();
    terminate();
  }

  return 0;
}

bool PartionManagableNode::processGetPartitionTableReq(OperationContext& context) {
  if (!checkOperationName(context, ADMIN_GET_REQUEST)) {
    return false;
  }

  idgs::Application& app = ::idgs::util::singleton<idgs::Application>::getInstance();
  PartitionTableMgr* pm = app.getPartitionManager();

  idgs::pb::PartitionTable table;
  pm->genPartitionTable(table);

  DVLOG(4) << "get Partition Table:\n" << table.DebugString();

  string jsonBody = protobuf::JsonMessage::toJsonString(&table);
  DVLOG(3) << "get json for partition table :\n" << jsonBody;

  std::shared_ptr<idgs::actor::ActorMessage> resposne =
      idgs::admin::util::createAdminResponse(context,
          ::idgs::admin::pb::Success,
           jsonBody);

  idgs::actor::sendMessage(resposne);

  return true;
}

    bool SplitStringIntoKeyValues(
        const std::string& line,
        char key_value_delimiter,
        std::string* key,
        std::vector<std::string>* values)
    {
        key->clear();
        values->clear();

        // 查找key.
        size_t end_key_pos = line.find_first_of(key_value_delimiter);
        if(end_key_pos == std::string::npos)
        {
            DVLOG(1) << "cannot parse key from line: " << line;
            return false; // 沒有key.
        }
        key->assign(line, 0, end_key_pos);

        // 查找values.
        std::string remains(line, end_key_pos, line.size()-end_key_pos);
        size_t begin_values_pos = remains.find_first_not_of(key_value_delimiter);
        if(begin_values_pos == std::string::npos)
        {
            DVLOG(1) << "cannot parse value from line: " << line;
            return false; // 沒有value.
        }
        std::string values_string(remains, begin_values_pos,
            remains.size()-begin_values_pos);

        // 添加到vector.
        values->push_back(values_string);
        return true;
    }

 /// Enroll more things that need to be completed before the global completion is, well, complete.
 /// This will send a cancel to the master if this core previously entered the cancellable barrier.
 ///
 /// Blocks until cancel completes (if it must cancel) to ensure correct ordering, therefore
 /// cannot be called from message handler.
 void enroll(int64_t inc = 1) {
   if (inc == 0) return;
   
   CHECK_GE(inc, 1);
   count += inc;
   DVLOG(5) << "enroll " << inc << " -> " << count << " gce("<<this<<")";
   
   // first one to have work here
   if (count == inc) { // count[0 -> inc]
     event_in_progress = true; // optimization to save checking in wait()
     // cancel barrier
     Core co = impl::call(master_core, [this] {
       cores_out++;
       return cores_out;
     });
     // first one to cancel barrier should make sure other cores are ready to wait
     if (co == 1) { // cores_out[0 -> 1]
       event_in_progress = true;
       call_on_all_cores([this] {
         event_in_progress = true;
       });
       CHECK(event_in_progress);
     }
     // block until cancelled
     CHECK_GT(count, 0);
     DVLOG(2) << "gce(" << this << " cores_out: " << co << ", count: " << count << ")";
   }
 }