/**
 * Copyright 2020 Huawei Technologies Co., Ltd
 *
 * 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.
 */

#ifndef MINDSPORE_CCSRC_RUNTIME_DEVICE_KERNEL_ADJUST_H_
#define MINDSPORE_CCSRC_RUNTIME_DEVICE_KERNEL_ADJUST_H_

#include <memory>
#include <map>
#include <string>
#include <vector>
#include <unordered_set>
#include "ir/anf.h"
#include "backend/session/kernel_graph.h"
#include "backend/kernel_compiler/kernel_build_info.h"
#include "backend/session/session_context.h"
#include "ir/tensor.h"
#include "runtime/device/ascend/profiling/profiling_utils.h"
#include "runtime/device/kernel_info.h"

using mindspore::device::ascend::ProfilingTraceInfo;
using mindspore::device::ascend::ProfilingUtils;
namespace mindspore {
constexpr auto kCurLoopCountParamName = "cur_loop_count";
constexpr auto kNextLoopCountParamName = "next_loop_count";
constexpr auto kIterLoopParamName = "iter_loop";
constexpr auto kOneParamName = "one";
constexpr auto kEpochParamName = "loop_epoch";
constexpr auto kStreamNeedActivedFirst = "stream_need_active_first";
constexpr uint32_t kSecondStreamSwitchLabel = 2;
enum StreamSwitchKind {
  kFpBpStreamSwitch = 0,
  kGetNextStreamSwitch = 1,
  kEosStreamSwitch = 2,
  kIndependentStreamSwitch = 3
};

namespace device {
class KernelAdjust {
 public:
  static KernelAdjust &GetInstance() {
    static KernelAdjust instance;
    return instance;
  }

  void InsertSwitchLoop(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr);
  bool StepLoadCtrlInputs(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr);
  void Profiling(NotNull<session::KernelGraph *> kernel_graph_ptr);
  static bool NeedInsertSwitch();
  CNodePtr CreateStreamActiveOp(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr);

 private:
  KernelAdjust() = default;
  ~KernelAdjust() = default;

  void ReorderGetNext(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr);
  CNodePtr CreateRecvApplyKernel(const std::shared_ptr<session::KernelGraph> &graph_ptr, uint32_t event_id);
  CNodePtr CreateSendApplyKernel(const std::shared_ptr<session::KernelGraph> &graph_ptr, uint32_t event_id);
  void CreateSwitchOpParameters(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr,
                                std::map<std::string, mindspore::ParameterPtr> *switch_loop_input);
  CNodePtr CreateStreamSwitchOp(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr,
                                const std::map<std::string, mindspore::ParameterPtr> &switch_loop_input,
                                StreamSwitchKind kind);

  CNodePtr CreatTupleGetItemNode(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr, const CNodePtr &node,
                                 size_t output_idx);
  CNodePtr CreateEndOfSequenceOP(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr,
                                 const CNodePtr &getnext_cnode);
  CNodePtr CreateStreamAssignAddnOP(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr,
                                    const std::map<std::string, mindspore::ParameterPtr> &switch_loop_input,
                                    bool cur_loop);
  kernel::KernelBuildInfo::KernelBuildInfoBuilder CreateMngKernelBuilder(const std::vector<std::string> &formats,
                                                                         const std::vector<TypeId> &type_ids);
  void LoadSwitchInputs(std::vector<tensor::TensorPtr> *inputs);
  void InsertProfilingKernel(const ProfilingTraceInfo &profiling_trace_info,
                             NotNull<session::KernelGraph *> kernel_graph_ptr);
  bool ExistIndependent(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr);
  bool ExistGetNext(const std::shared_ptr<session::KernelGraph> &kernel_graph_ptr);
};
}  // namespace device
}  // namespace mindspore
#endif  // MINDSPORE_CCSRC_RUNTIME_DEVICE_KERNEL_ADJUST_H_