Parallel.h

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/*
 * Copyright 2014-present Facebook, 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.
 */

#pragma once
#define FOLLY_GEN_PARALLEL_H_

#include <mutex>

#include <folly/gen/Base.h>

namespace folly {
namespace gen {
namespace detail {

template <class Ops>
class Parallel;

template <class Sink>
class Sub;

template <class Iterator>
class ChunkedRangeSource;

} // namespace detail

template <
    class Container,
    class Iterator = typename Container::const_iterator,
    class Chunked = detail::ChunkedRangeSource<Iterator>>
Chunked chunked(const Container& container, int chunkSize = 256) {
  return Chunked(chunkSize, folly::range(container.begin(), container.end()));
}

template <
    class Container,
    class Iterator = typename Container::iterator,
    class Chunked = detail::ChunkedRangeSource<Iterator>>
Chunked chunked(Container& container, int chunkSize = 256) {
  return Chunked(chunkSize, folly::range(container.begin(), container.end()));
}

template <class Ops, class Parallel = detail::Parallel<Ops>>
Parallel parallel(Ops ops, size_t threads = 0) {
  return Parallel(std::move(ops), threads);
}

template <class Sink, class Sub = detail::Sub<Sink>>
Sub sub(Sink sink) {
  return Sub(std::move(sink));
}
} // namespace gen
} // namespace folly

#include <folly/gen/Parallel-inl.h>