34 lines
1.2 KiB
C++
34 lines
1.2 KiB
C++
/*
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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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#include <folly/concurrency/QueueObserver.h>
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namespace {
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std::unique_ptr<folly::QueueObserverFactory>
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make_queue_observer_factory_fallback(const std::string&, size_t) noexcept {
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return std::unique_ptr<folly::QueueObserverFactory>();
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}
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} // namespace
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namespace folly {
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/* static */ std::unique_ptr<QueueObserverFactory> QueueObserverFactory::make(
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const std::string& context, size_t numPriorities) {
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auto f = make_queue_observer_factory ? make_queue_observer_factory
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: make_queue_observer_factory_fallback;
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return f(context, numPriorities);
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}
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} // namespace folly
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