heron/common/src/cpp/basics/processutils.h

/*
 * Copyright 2015 Twitter, 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.
 */

////////////////////////////////////////////////////////////////////
//
// Utility functions for getting metadata about a process
//
/////////////////////////////////////////////////////////////////////

#include <sys/types.h>

#if !defined(__PROCESS_UTILS_H)
#define __PROCESS_UTILS_H

struct rusage;

class ProcessUtils {
 public:
  // get the PID of the process
  static pid_t getPid();

  // get the resource usage of the process
  static int getResourceUsage(struct rusage *usage);

  // get the total amount of memory used by the process
  static size_t getTotalMemoryUsed();
};

#endif