49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#define FOLLY_GEN_PARALLELMAP_H_
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#include <folly/gen/Core.h>
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namespace folly {
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namespace gen {
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namespace detail {
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template <class Predicate>
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class PMap;
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} // namespace detail
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/**
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* Run `pred` in parallel in nThreads. Results are returned in the
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* same order in which they were retrieved from the source generator
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* (similar to map).
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*
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* NOTE: Only `pred` is run from separate threads; the source
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* generator and the rest of the pipeline is executed in the
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* caller thread.
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*/
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template <class Predicate, class PMap = detail::PMap<Predicate>>
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PMap pmap(Predicate pred = Predicate(), size_t nThreads = 0) {
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return PMap(std::move(pred), nThreads);
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}
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} // namespace gen
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} // namespace folly
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#include <folly/gen/ParallelMap-inl.h>
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