proc_id.hpp

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/*
 * Copyright (c) 2014-2015, Hewlett-Packard Development Company, LP.
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details. You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * HP designates this particular file as subject to the "Classpath" exception
 * as provided by HP in the LICENSE.txt file that accompanied this code.
 */
#ifndef FOEDUS_PROC_PROC_ID_HPP_
#define FOEDUS_PROC_PROC_ID_HPP_

#include <stdint.h>

#include <utility>

#include "foedus/error_stack.hpp"
#include "foedus/fwd.hpp"
#include "foedus/assorted/fixed_string.hpp"
#include "foedus/thread/fwd.hpp"

namespace foedus {
namespace proc {

typedef assorted::FixedString<60> ProcName;

typedef uint32_t LocalProcId;

const LocalProcId kLocalProcInvalid = -1;

typedef uint64_t GlobalProcId;

inline GlobalProcId combined_global_proc_id(uint16_t node, LocalProcId local_id) {
  return static_cast<GlobalProcId>(node) << 32 | local_id;
}
inline uint16_t extract_numa_node_from_global_proc_id(GlobalProcId id) {
  return static_cast<uint16_t>(id >> 32);
}
inline LocalProcId extract_local_id_from_global_proc_id(GlobalProcId id) {
  return static_cast<LocalProcId>(id);
}

struct ProcArguments {
  Engine*         engine_;
  thread::Thread* context_;
  const void*     input_buffer_;
  uint32_t        input_len_;
  void*           output_buffer_;
  uint32_t        output_buffer_size_;
  uint32_t*       output_used_;
};

typedef ErrorStack (*Proc)(const ProcArguments& args);

typedef std::pair<ProcName, Proc> ProcAndName;

}  // namespace proc
}  // namespace foedus
#endif  // FOEDUS_PROC_PROC_ID_HPP_