89 lines
2.3 KiB
C++
89 lines
2.3 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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#pragma once
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#include <folly/futures/Future.h>
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namespace folly {
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namespace fibers {
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inline ExecutorLoopController::ExecutorLoopController(folly::Executor* executor)
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: executor_(executor),
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timeoutManager_(executor_),
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timer_(HHWheelTimer::newTimer(&timeoutManager_)) {}
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inline ExecutorLoopController::~ExecutorLoopController() {}
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inline void ExecutorLoopController::setFiberManager(fibers::FiberManager* fm) {
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fm_ = fm;
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}
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inline void ExecutorLoopController::schedule() {
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// add() is thread-safe, so this isn't properly optimized for addTask()
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if (!executorKeepAlive_) {
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executorKeepAlive_ = getKeepAliveToken(executor_);
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}
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auto guard = localCallbackControlBlock_->trySchedule();
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if (!guard) {
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return;
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}
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executor_->add([this, guard = std::move(guard)]() {
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if (guard->isCancelled()) {
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return;
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}
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runLoop();
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});
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}
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inline void ExecutorLoopController::runLoop() {
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if (!executorKeepAlive_) {
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if (!fm_->hasTasks()) {
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return;
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}
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executorKeepAlive_ = getKeepAliveToken(executor_);
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}
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fm_->loopUntilNoReadyImpl();
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if (!fm_->hasTasks()) {
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executorKeepAlive_.reset();
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}
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}
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inline void ExecutorLoopController::runEagerFiber(Fiber* fiber) {
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if (!executorKeepAlive_) {
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executorKeepAlive_ = getKeepAliveToken(executor_);
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}
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fm_->runEagerFiberImpl(fiber);
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if (!fm_->hasTasks()) {
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executorKeepAlive_.reset();
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}
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}
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inline void ExecutorLoopController::scheduleThreadSafe() {
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executor_->add(
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[this, executorKeepAlive = getKeepAliveToken(executor_)]() mutable {
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if (fm_->shouldRunLoopRemote()) {
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return runLoop();
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}
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});
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}
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inline HHWheelTimer* ExecutorLoopController::timer() {
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return timer_.get();
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}
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} // namespace fibers
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} // namespace folly
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