chromium/third_party/grpc/src/src/core/lib/event_engine/default_event_engine.cc

// Copyright 2021 The gRPC Authors
//
// 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.
#include <grpc/support/port_platform.h>

#include "src/core/lib/event_engine/default_event_engine.h"

#include <atomic>
#include <memory>
#include <utility>

#include "absl/functional/any_invocable.h"

#include <grpc/event_engine/event_engine.h>

#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/config/core_configuration.h"
#include "src/core/lib/debug/trace.h"
#include "src/core/lib/event_engine/default_event_engine_factory.h"
#include "src/core/lib/event_engine/trace.h"
#include "src/core/lib/gprpp/debug_location.h"
#include "src/core/lib/gprpp/no_destruct.h"
#include "src/core/lib/gprpp/sync.h"

namespace grpc_event_engine {
namespace experimental {

namespace {
std::atomic<absl::AnyInvocable<std::unique_ptr<EventEngine>()>*>
    g_event_engine_factory{ … };
grpc_core::NoDestruct<grpc_core::Mutex> g_mu;
grpc_core::NoDestruct<std::weak_ptr<EventEngine>> g_event_engine;
}  // namespace

void SetEventEngineFactory(
    absl::AnyInvocable<std::unique_ptr<EventEngine>()> factory) { … }

void EventEngineFactoryReset() { … }

std::unique_ptr<EventEngine> CreateEventEngine() { … }

std::shared_ptr<EventEngine> GetDefaultEventEngine(
    grpc_core::SourceLocation location) { … }

namespace {
grpc_core::ChannelArgs EnsureEventEngineInChannelArgs(
    grpc_core::ChannelArgs args) { … }
}  // namespace

void RegisterEventEngineChannelArgPreconditioning(
    grpc_core::CoreConfiguration::Builder* builder) { … }

}  // namespace experimental
}  // namespace grpc_event_engine