thread_group.cpp

Go to the documentation of this file.

/*
 * 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.
 */
#include "foedus/thread/thread_group.hpp"

#include <ostream>
#include <vector>

#include "foedus/engine.hpp"
#include "foedus/engine_options.hpp"
#include "foedus/error_stack_batch.hpp"
#include "foedus/memory/engine_memory.hpp"
#include "foedus/thread/thread.hpp"
#include "foedus/thread/thread_options.hpp"

namespace foedus {
namespace thread {
ThreadGroup::ThreadGroup(Engine *engine, ThreadGroupId group_id)
  : engine_(engine), group_id_(group_id) {
}
ThreadGroup::~ThreadGroup() {
}

ErrorStack ThreadGroup::initialize_once() {
  node_memory_ = engine_->get_memory_manager()->get_local_memory();
  ThreadLocalOrdinal count = engine_->get_options().thread_.thread_count_per_group_;
  for (ThreadLocalOrdinal ordinal = 0; ordinal < count; ++ordinal) {
    ThreadId id = compose_thread_id(group_id_, ordinal);
    ThreadGlobalOrdinal global_ordinal = to_global_ordinal(id, count);
    threads_.push_back(new Thread(engine_, id, global_ordinal));
    CHECK_ERROR(threads_.back()->initialize());
  }
  return kRetOk;
}

ErrorStack ThreadGroup::uninitialize_once() {
  ErrorStackBatch batch;
  batch.uninitialize_and_delete_all(&threads_);
  node_memory_ = nullptr;
  return SUMMARIZE_ERROR_BATCH(batch);
}

std::ostream& operator<<(std::ostream& o, const ThreadGroup& v) {
  o << "<ThreadGroup>";
  o << "<group_id_>" << static_cast<int>(v.group_id_) << "</group_id_>";
  o << "<threads_>";
  for (Thread* child_thread : v.threads_) {
    o << *child_thread;
  }
  o << "</threads_>";
  o << "</ThreadGroup>";
  return o;
}

}  // namespace thread
}  // namespace foedus