content: /*
   * Copyright 2021 Alibaba Group Holding Limited.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *  	http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.alibaba.graphscope.communication;
  
  import static com.alibaba.graphscope.utils.CppClassName.GRAPE_COMMUNICATOR;
  import static com.alibaba.graphscope.utils.CppHeaderName.CORE_JAVA_JAVA_MESSAGES_H;
  import static com.alibaba.graphscope.utils.CppHeaderName.GRAPE_COMMUNICATOR_H;
  
  import com.alibaba.fastffi.CXXHead;
  import com.alibaba.fastffi.CXXReference;
  import com.alibaba.fastffi.FFIConst;
  import com.alibaba.fastffi.FFIGen;
  import com.alibaba.fastffi.FFINameAlias;
  import com.alibaba.fastffi.FFIPointer;
  import com.alibaba.fastffi.FFITypeAlias;
  
  /**
   * The java wrapper for <a
   * href="https://github.com/alibaba/libgrape-lite/blob/master/grape/communication/communicator.h">grape
   * Communicator class</a>, which provides some useful aggregators. Shall not be used by user.
   *
   * <p>For User-defined msg types, the corresponding code is generated by graphscope-processor.
   */
  @FFIGen
  @CXXHead(GRAPE_COMMUNICATOR_H)
  @CXXHead(CORE_JAVA_JAVA_MESSAGES_H)
  @FFITypeAlias(GRAPE_COMMUNICATOR)
  public interface FFICommunicator extends FFIPointer {
  
      @FFINameAlias("Sum")
      <MSG_T> void sum(@FFIConst @CXXReference MSG_T msgIn, @CXXReference MSG_T msgOut);
  
      @FFINameAlias("Min")
      <MSG_T> void min(@FFIConst @CXXReference MSG_T msgIn, @CXXReference MSG_T msgOut);
  
      @FFINameAlias("Max")
      <MSG_T> void max(@FFIConst @CXXReference MSG_T msgIn, @CXXReference MSG_T msgOut);
  
      @FFINameAlias("SendTo")
      <MST_T> void sendTo(int dstFid, @FFIConst @CXXReference MST_T msgOut);
  
      @FFINameAlias("RecvFrom")
      <MSG_T> void receiveFrom(int srcFid, @CXXReference MSG_T msgIn);
  }
  