fragment-mgr.h

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// Copyright 2014 Cloudera Inc.
//
// 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 IMPALA_SERVICE_FRAGMENT_MGR_H
#define IMPALA_SERVICE_FRAGMENT_MGR_H

#include <boost/shared_ptr.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/unordered_map.hpp>

#include "gen-cpp/ImpalaInternalService.h"
#include "common/status.h"

namespace impala {

//
//
class FragmentMgr {
 public:
  Status ExecPlanFragment(const TExecPlanFragmentParams& params);

  void CancelPlanFragment(TCancelPlanFragmentResult& return_val,
      const TCancelPlanFragmentParams& params);

  class FragmentExecState;

  boost::shared_ptr<FragmentExecState> GetFragmentExecState(
      const TUniqueId& fragment_instance_id);

 private:
  void FragmentExecThread(FragmentExecState* exec_state);

  boost::mutex fragment_exec_state_map_lock_;

  typedef boost::unordered_map<TUniqueId, boost::shared_ptr<FragmentExecState> >
  FragmentExecStateMap;
  FragmentExecStateMap fragment_exec_state_map_;
};

}

#endif