72 lines
2.0 KiB
C++
72 lines
2.0 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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#include <folly/Executor.h>
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#include <folly/SingletonThreadLocal.h>
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#include <stdexcept>
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#include <glog/logging.h>
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namespace folly {
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void Executor::addWithPriority(Func, int8_t /* priority */) {
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throw std::runtime_error(
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"addWithPriority() is not implemented for this Executor");
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}
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bool Executor::keepAliveAcquire() {
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return false;
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}
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void Executor::keepAliveRelease() {
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LOG(FATAL) << __func__ << "() should not be called for folly::Executor types "
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<< "which do not override keepAliveAcquire()";
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}
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namespace {
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using BlockingContextSingletonT =
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SingletonThreadLocal<folly::Optional<BlockingContext>>;
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} // namespace
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folly::Optional<BlockingContext> getBlockingContext() {
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return BlockingContextSingletonT::get();
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}
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BlockingGuard::BlockingGuard(folly::StringPiece executorName)
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: previousContext_{BlockingContextSingletonT::get()} {
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BlockingContextSingletonT::get() = BlockingContext{executorName};
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}
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BlockingGuard::BlockingGuard()
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: previousContext_{BlockingContextSingletonT::get()} {
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BlockingContextSingletonT::get() = folly::none;
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}
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BlockingGuard::~BlockingGuard() {
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BlockingContextSingletonT::get() = std::move(previousContext_);
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}
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BlockingGuard makeBlockingDisallowedGuard(folly::StringPiece executorName) {
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return BlockingGuard{executorName};
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}
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BlockingGuard makeBlockingAllowedGuard() {
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return BlockingGuard{};
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}
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} // namespace folly
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