process-state-info.h

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// Copyright 2015 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_UTIL_PROCESS_STATE_INFO_H
#define IMPALA_UTIL_PROCESS_STATE_INFO_H

#include <map>
#include <string>

#include <boost/cstdint.hpp>
#include "common/logging.h"
#include "common/names.h"


namespace impala {






class ProcessStateInfo {
 public:
  ProcessStateInfo();

  string DebugString() const;

  int GetInt(const string& state_key) const;
  int64_t GetInt64(const string& state_key) const;
  string GetString(const string& state_key) const;

  int64_t GetBytes(const string& state_key) const;
 private:
  typedef map<string, string> ProcessStateMap;
  ProcessStateMap process_state_map_;

  typedef map<int, string> FileDescriptorMap;
  FileDescriptorMap fd_desc_;

  void ReadProcIO();

  void ReadProcCgroup();

  void ReadProcSched();

  void ReadProcStatus();

  void ReadProcFileDescriptorInfo();
};

}

#endif