Concurrency.cpp

/* Copyright 2015,2016 Tao Xu
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.
 */

#include "Concurrency.h"

DEFINE_int32(num_threads, 0,
             "number of threads to use in loading & evaluation");

using namespace apache::thrift::concurrency;

namespace boosting {

boost::shared_ptr<ThreadManager>
  Concurrency::threadManager =
    boost::shared_ptr<ThreadManager>(NULL);

void Concurrency::initThreadManager() {
  if (FLAGS_num_threads > 0) {
    threadManager = ThreadManager::newSimpleThreadManager(FLAGS_num_threads);
    threadManager->threadFactory(
      boost::shared_ptr<ThreadFactory>(
        new PosixThreadFactory));
    threadManager->start();
  }
}

void CounterMonitor::init(int size) {
  counter_ = size;
}

void CounterMonitor::decrement() {
  if (atomic_fetch_sub(&counter_, 1) == 1) {
    monitor_.notifyAll();
  }
}

int CounterMonitor::wait() {
  return monitor_.waitForever();
}

};